JP4341977B2 - Outer wall structure in which balcony is projected with cantilever support, method for constructing outer wall, and non-combustible heat insulating block to be used - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention relates to an outer wall structure in which balconies, fences, outer corridors, etc. (hereinafter referred to as balconies) are projected in a cantilevered floor slab form in a reinforced concrete external heat insulating building, a method for constructing the outer wall, and an outer wall construction It relates to a non-combustible heat insulating block in which a connecting bar (hereinafter referred to as a Z bar) is firmly held, and belongs to the technical field of architecture.

  Reinforced concrete exterior thermal insulation buildings are coated with a thermal insulation layer on the outside of the concrete frame, so that the thermal stress on the solar concrete frame can be minimized, preventing cracks in the concrete frame, and the concrete frame in contact with the air. Therefore, the neutralization of concrete can be suppressed, the corrosion of reinforcing steel bars can be prevented, the durability of the building can be improved, the temperature environment in the building can be maintained, and there is little condensation, mold and mites. It has been evaluated as an energy-saving high-performance building because it can suppress the occurrence of water and maintain an excellent living environment in terms of health.

  However, in an external insulation building that forms reinforced concrete floor slabs such as balconies and outer corridors protruding from the outer wall of the building, the reinforced concrete floor slab tends to be a thermal bridge to the building frame. Suppression of the thermal bridge action from the balcony floor slab to the concrete frame is strongly desired, and as a means for solving this problem, the conventional example 1 shown in FIG. 8 and the conventional example 2 shown in FIG. 9 have already been proposed. ing.

  Conventional example 1 shown in FIG. 8 was cited as a conventional example in Patent Document 1, and as shown in FIGS. 8 (B) and 8 (C), a large number of long connected reinforcing bar groups are provided on the top of the heat insulating material. In parallel with the skewered form, a rebar group for compression is placed between the long connected rebars at the bottom of the heat insulating material, and the bearing plates at both ends of each compression rebar are projected from the heat insulating material, and each lattice is used for compression. A rebar unit for reducing a thermal bridge, which is arranged in the vicinity of a reinforcing bar and extends in parallel between the long connecting reinforcing bars on the top of the heat insulating material, with both side extended portions of the lattice reinforcing bars, and the reinforcing bar unit is shown in FIG. As shown in Fig. 5, the concrete is placed between the balcony form and the dwelling unit form and placed in concrete, and the concrete balcony is supported by the reinforcing bar unit.

Further, Conventional Example 2 shown in FIG. 9 is an invention that is the subject of Patent Document 1, and when the reinforcing bar unit of Conventional Example 1 is placed in the form frame for the housing unit, the reinforcing bars arranged on the housing unit side are This solves the problem that the connecting reinforcing bars of the reinforcing bar unit for reducing the thermal bridge cannot be arranged. As shown in FIG. 9C, the upper notch groove group and the lower notch groove group are formed on the heat insulating material. As shown in FIG. 9 (B), a heat insulating material is disposed at the base end of the balcony mold, and the connecting reinforcing bars are separated from the balcony mold through the upper cutout groove group of the heat insulating material. Inserted into the lower form notch groove of the heat insulating material, the reinforcing bar mounting jig group of cylinders with a pressure bearing plate at both ends, placed in the form of a transfer to the formwork, and the reinforcing bar mounting jig group Insert the connecting reinforcing bar group from between the bar arrangements placed in the formwork, and screw it to the reinforcing bar mounting jig. As is for setting concrete balcony mold frame and the dwelling unit building frame-body mold.
JP 2005-188036 A

In the conventional example 1 in FIG. 8, as described in Patent Document 1 (Japanese Patent Laid-Open No. 2005-188036), since many connecting reinforcing bars are attached to the heat insulating material, the shape becomes bulky and complicated. There is a problem that efficient transportation and storage are not possible.
In addition, horizontal projections such as balconies vary in size and shape, and it is impossible to prepare all the corresponding reinforcing bar units, and the reinforcing bars arranged on the side of the housing unit are in the way. This is a complicated work that requires time and effort to arrange and fix the reinforcing bar unit for reducing the thermal bridge, and the work of assembling the reinforcing bars in the balcony mold and the housing frame is complicated, and the workability is poor.

In Conventional Example 2 (FIG. 9), a connecting reinforcing bar group connecting the balcony floor slab and the housing for housing is arranged in the upper notch groove group of the heat insulating material. In order to counter the tensile stress caused by the above, a large number of parallel arrangements are necessary. When the upper connecting reinforcing bar group is aligned with the balcony floor slab reinforcement, the upper connection to the dwelling unit that has more reinforcement than the balcony floor slab reinforcement. Reinforcing bars are not only excessively arranged in strength, but also interfere with the arrangement of the reinforcing bars.
In addition, as shown in FIG. 9B, since it is necessary to arrange the reinforcing bar mounting jig upward so as not to interfere with the balcony bottom bar, the stress center distance between the upper connecting bar and the lower connecting bar becomes small, The drag (tensile force, compressive force) of the balcony is reduced, and the balcony floor slab thickness is increased in terms of strength maintenance.

Further, the lower connecting reinforcing bars are screwed into the reinforcing bar attaching jigs between the reinforcing bars in the housing frame, so that the work is complicated.
In addition, the upper notch groove group and the lower notch groove group of the heat insulating material have gaps formed in the marks where the respective connecting reinforcing bar groups and the respective reinforcing bar mounting jigs are inserted, and the gaps in the notch groove groups of the heat insulating material are formed. When concrete is filled, the cast concrete continues between the balcony and the concrete frame, and the heat insulating function as the outer heat insulating concrete frame is locally reduced.

In both Conventional Example 2 (FIG. 9) and Conventional Example 1 (FIG. 8), a thermal bridge reducing reinforcing bar unit is arranged on the boundary surface between the balcony floor slab and the dwelling unit frame, and the concrete outer wall is constructed after the concrete frame is constructed. This is for an external insulation building with a post-pasting method in which a heat insulating material is stuck to the surface, and has a problem of versatility.
The present invention rationally solves or improves the problems of the conventional examples 1 and 2, and the reinforced concrete balcony is rationally constructed in a cantilever support form and in a form in which a thermal bridge is suppressed. The present invention provides a novel outer wall structure, a method for constructing the outer wall, and a non-combustible support block that enables rational construction.

The invention of the outer wall structure of the present application is an outer wall structure in which a reinforced concrete balcony protrudes with a cantilever support from a reinforced concrete external heat insulating outer wall as shown in FIG. 1, for example, and the concrete outer wall W is shown in FIG. The layering surface 2S of the heat insulating layer 2B in which the grooves G are vertically arranged is covered with the composite panels 2 and 3 in which the exterior base material 2A is layered, and the balcony floor slab SB is formed from the concrete outer wall W to the heat insulating layer 2B of the composite panel. It protrudes in a form that is thermally shut off, and is protruded as shown in FIG. 3B , for example .

In this case, the composite panel 2 is for a general wall, and the composite panel 3 is obtained by processing only the upper and lower ends of the composite panel 2 for forming a balcony. is there.
In addition, if the non-combustible support block 4 can hold the Z-strip 1 and is fitted in the heat-insulating layer 2B, the non-combustible support block 4 has the same function as the heat-insulating layer 2B in terms of the heat-insulating layer 2B. It only needs to be provided with a fireproof function, and is a rock carbonate board made of calcium carbonate foam (Fuji Kasei Kogyo Co., Ltd., trade name) and para board (Paramount Glass Kogyo Co., Ltd.), a high-density artificial mineral fiber heat insulating material. Name) and lock board (Nitto Boseki Co., Ltd., trade name) can be used.
Moreover, since the groove | channel G group of the heat insulation layer 2B discharge | releases the moisture of a heat insulation layer, and suppresses the overheating by the solar radiation of the exterior base material 2A by ventilation | gas_flowing, typically FIG.3 (C) As described above, the heat insulating layer 2B is uniformly arranged on the layer attachment surface 2S.
In addition, the Z-strand 1 referred to in the present invention is a strong tensile drag and bending drag that is bundled with a plurality of reinforcing bars in order to support the balcony floor slab SB by passing it to the concrete frame CF and the balcony floor slab SB. a connecting muscles Ru is exhibited typically shown in FIG. 4, and Z upper muscle 1U and Z bottom muscle 1D, in Z truss muscle 1M with an intermediate inclined portion 1S in front and rear sides, the top and bottom The connecting bar is a truss-assembled connecting bar that is integrated while maintaining the center distance L15.
Incidentally, the Z truss muscle 1M can adopt a form of a locust muscle other than the C-shaped curved muscle of FIG.

Accordingly, since the outer wall structure of the present invention has a strong support force for the Z-strip 1, the cantilever at the Z-strip 1 of the balcony floor slab SB having a depth LB of 1500 mm and a thickness TB of 180 mm shown in FIG. Support is possible by arranging the Z bars 1 at large intervals (standard: 450 mm), and the bar arrangement work when constructing the balcony floor slab is much easier than in the conventional examples 1 and 2.
And in the case of the formwork of the balcony floor slab SB, the composite panel (processed composite panel) 3 provided with the notch H1 for wearing the non-combustible support block 14 is adopted for the outer formwork of the outer wall by a conventional method, and the Z-strip 1 is formed. Since the non-combustible support block 4 is only required to be fitted in the notch H1 for fitting the outer formwork, the formwork becomes easy and the fireproof balcony floor slab SB projecting construction can be reasonably constructed by conventional formwork work. I can do it.
Moreover, since the Z reinforcement 1 is held by the non-combustible support block 4, even if the heat insulating layer 2B of the composite panel 2 covering the concrete outer wall W burns in the event of a fire, the strength deterioration of the Z reinforcement 1 is not Being able to prevent, the balcony floor slab SB becomes fireproof.
Further, if the protrusion AP to the concrete frame CF side of the Z bar 1 is bent at a right angle, the protrusion AP can be fixedly held in the concrete wall W, and the protruding vertical position of the balcony floor slab SB is free. It becomes.

And since the balcony floor slab SB protrudes by being thermally insulated from the concrete outer wall W, the thermal bridge action of the concrete of the balcony floor slab SB → the concrete of the outer wall W is only the support Z-strip 1 and the use Z Since the reinforcing bar 1 is extremely reduced in the total amount of the cross-sectional area from the connecting reinforcing bars of the conventional examples 1 and 2, the thermal bridge action is extremely reduced as compared with the conventional examples 1 and 2.
Therefore, the outer wall structure of the present invention is a cantilever-supported concrete balcony B in which the thermal bridge action can be extremely reduced in a highly durable reinforced concrete building in which the concrete outer wall W is covered with ventilation and heat insulation. Since it can protrude from the desired position of W, it is possible to provide an energy-saving high-quality concrete building in which the layout design of the balcony B is free.
And since the composite panels 2 and 3 which coat | cover the concrete outer wall W with external heat insulation are provided with the groove | channel G which enables draft ventilation of external air, the restrictions of the exterior material attached to the surface of exterior exterior material 2A also have the restrictions. And providing an outer wall structure in which internal condensation is suppressed and heat stress due to solar radiation is suppressed.

Further, in the invention of the outer wall structure, in the composite panels 2 and 3, the moisture permeability resistance of the heat insulating layer 2B is smaller than the moisture permeability resistance of the concrete outer wall W, and the moisture permeability resistance of the exterior base material 2A is the heat insulating layer 2B. It is preferably less than the moisture permeability resistance.
In this case, the outer base material 2A is preferably a light thin rigid plate that can withstand a concrete frame, satisfies the strength and impact resistance of the outer wall as an outer base material, and has low moisture permeability resistance. Is a magnesium cement plate with a thickness of 12 mm, composed mainly of magnesium oxide and cinnabar, and embedded with a glass fiber nonwoven fabric on both sides.

Moreover, as the heat insulation layer 2B of the panels 2 and 3, a foamed plastic heat insulation board of JISA9511 (thermal conductivity: 0.022 to 0.037 kcal / mh ° C., moisture permeability: 0.02 to 0.14 g / m ² hmmHg) And a calcium carbonate foam plate (thermal conductivity: 0.032 kcal / mh ° C., moisture permeability: 0.038 g / m ² hmmHg) is used as the non-combustible heat insulating material 4B. Incombustible heat insulating material 4B becomes part of the heat insulating layer 2B, and the moisture inside the building is released along the route of the concrete outer wall W → the heat insulating layer 2B → the groove G → the outside air, In the covering part of the composite panel 3, the moisture inside the building is the moisture distribution route of the concrete outer wall W → the heat insulating layer 2B → the exterior base material 2A → the outside air, and the concrete outer wall W → the heat insulating layer 2B → the groove G → the outside air. In the path of As a result, the outer wall is provided with a high-quality reinforced concrete building in which internal dew condensation is completely suppressed and the outer wall is uniformly coated with heat insulation, which is energy-saving and excellent in sanitary environment.

In the invention of the outer wall structure, as shown in FIG. 2, the composite panel 3 removes the exterior base material 2A at the contact surface of the base end Bb of the balcony floor slab SB, and the layer of the heat insulating layer 2B. It is preferable that the groove G group of the heat insulating layer 2B is protected by the water-resistant plate 6 interposed at the interface between the landing surface 2S and the balcony floor slab base end Bb surface.
Since the outer wall structure of the present invention is a breathable outer heat insulating wall that is covered with the composite panel 2, it must be avoided that the groove G of the composite panel 2 is crushed by the concrete of the balcony floor slab SB.

However, the magnesium cement plate, which is optimal as the exterior base material 2A for the composite panels 2 and 3, dissolves if it is in contact with the cast concrete for a long time, and even if it is another exterior base material 2A, Contact with time may cause dissolution or damage.
Therefore, in the composite panel 3, the exterior base material 2A is in an area where it is integrated with the cast concrete of the balcony floor slab SB, and the exterior base material 2A is formed on the water-resistant plate 6 as shown in FIG. If replaced, the exterior base material 2A can be implemented without considering the durability to water, and has an outer wall structure in which the ventilation function of the groove G group is guaranteed.
In this case, the water-resistant plate 6 may be a board-based flexible plate having a thickness of 4 mm in the slate (JISA5430).

Further, in the invention of the outer wall structure, the incombustible support block 4 through which the Z-strip 1 penetrates has a thickness Y4 that is the same as the thickness T1 of the composite panel 2, and a fitting notch H1 for the heat insulating layer 2B. Furthermore, it is preferable that the heat insulation layer 2B is fitted in an airtight manner.
In this case, as shown in FIG. 5, the incombustible support block 4 is formed with a width X4 slightly smaller (standard: 10 mm) than the width W4 (standard: 60 mm) of the fitting notch H1, and fitted with the heat insulating layer 2B. If the gap follower sheet 12A having a thickness of 2 mm is attached to both side surfaces 4S when fitted into the notch H1, the nonflammable support block 4 can be easily fitted, and the gap follower sheet 12A expands over time. It becomes airtight fitting of the non-combustible support block 4.
And as the gap follow-up sheet 12A, Sekisui Chemical Co., Ltd. Softlon (trade name) or Ilbrook (Germany) Ilmond (trade name) may be employed.

In addition, if the notch H1 for fitting is notched in the thick part 2C of the heat insulation layer 2B as shown in FIG. 3, it can arrange | position without damaging the groove | channel G of the panel 2. FIG.
In addition, the gap following sheet 12A should be stuck so as not to interfere with the groove G while avoiding the opening side surface of the groove G as shown in FIG.
Therefore, the incombustible support block 4 is integrally arranged in the heat insulating layer 2B as if it is a continuous body of the heat insulating layer 2B, and the air gap between the heat insulating layer 2B and the incombustible support block 4 is air-sealed to prevent the air heat insulating layer. As a result of this function, the heat insulation function for the concrete frame CF (concrete outer wall W) is not deteriorated due to the insertion of the non-combustible support block 4.

  In addition, as shown in FIG. 2, the non-combustible support block 4 includes a Z upper end 1U and a Z lower end 1D, a central horizontal upper side 1U ', an intermediate inclined part 1S inclined and lowered on both sides, and horizontal lower side parts 1D on both sides. It is preferable that the Z truss 1 that is integrated vertically with the stress center distance L15 is held in an airtight manner by the Z truss bar 1M provided with '.

In this case, it is preferable that the intermediate inclined portion 1S of the Z truss muscle 1M has an inclination angle of 45 °.
Further, the diameter, length, and stress center distance L15 of the Z upper bar 1U and the Z lower bar 1D may be determined by the structural calculation of the balcony floor slab SB to be applied. From the viewpoint of concrete fixing strength, that is, from the viewpoint of structural calculation, a deformed steel bar having the same diameter is preferable.
Further, for example, as shown in FIG. 4, the Z-strip 1 is held in an airtight manner by dividing the non-combustible heat insulating material 4B for the non-combustible support block into two, and the Z-strip insertion hole on the split inner surface of each split piece 4B ′. If H2, H2 ', and H3 are arranged and the Z-striped line 1 is provided with a clearance follow-up sheet 12A on both front and rear sides, fitted into the Z-slot fitting hole, and the divided pieces 4B' are bonded and integrated again, Due to the diameter expansion of the following sheet 12A, the Z-strip 1 can be fixedly held in the non-combustible support block 4 in an airtight manner.

Accordingly, the non-combustible support block 4 holds the Z-strand 1 having a strong support force, and the arrangement of the non-combustible support block 4 on the panel heat insulating layer 2B can be made at a large interval (standard: 450 mm). , 2 can be far more rational than the arrangement of connecting bars.
Moreover, since the Z rebar 1 is airtightly held in the incombustible support block 4, the space around the Z rebar 1 in the noncombustible support block 4 functions as an air insulating layer, and the concrete of the noncombustible support block 4. The heat insulating property with respect to the outer wall W is not impaired.

  In addition, the invention of the construction method of the outer wall is a composite panel in which the exterior base material 2A is layered and integrated with the foamed plastic heat insulating layer 2B in which the grooves G and the thick portions 2C are alternately arranged on the layering surface 2S. 2, in the general wall portion, the composite panel 2 is the outer wall formwork F0, and in the balcony floor slab SB protruding wall portion, the exterior base material 2A of the composite panel 2 is illustrated in FIG. As shown in FIG. 3 (A), a height 4 h that interferes with the base end Bb of the balcony floor slab SB is cut off from the upper end, and a fitting notch H 1 that extends over the cut height 4 h is placed in the arrangement position of the incombustible support block 4. A processed composite panel 3 formed on the thick part 2C and having the cut-off height 4h adhered to the layering surface 2S so as not to interfere with the fitting notch H1 is defined as an outer wall formwork F0. , Z upper end muscle 1U and Z lower end muscle 1D in the fitting notch H1 of the processed composite panel 3 The non-combustible support block 4 penetrating and holding the Z-strand 1 integrated with the Z-truss 1M and maintaining the center distance L15 in the vertical direction is fitted and fastened. The other projecting portion BP is arranged in the balcony floor slab form FB in the frame side formwork FA to form a conventional formwork. By placing concrete in the formwork, the balcony floor slab is formed from the concrete outer wall W. The SB is projected in a cantilever support form.

  In this case, the composite panel 2 for a general wall typically has a heat insulation layer 2B having a thickness (T3) of 75 mm, a width (BW) of 900 mm, and a height of 1 h of a floor height (standard: 2700 mm). Magnesium cement board (Nittobo Co., Ltd., Shinboard Light) with a hard urethane foam of 2A, exterior base material 2A having a thickness (T2) of 12 mm, a width (AW) of 900 mm, and a height of the heat insulation layer of 1 h-20 mm (Product name)), and the heat insulating layer 2B and the exterior base material 2A are 10mm in the width direction, and in the height direction, the heat insulating layer 2B protrudes 40mm at the top and 20mm at the bottom. is there.

Further, the processed composite panel 3 for constructing a balcony is obtained by cutting the upper and lower sides of the composite panel 2. Typically, the cutting height 4h of the exterior base material 2A at the upper part of the panel 3 is 200 mm. The bottom surface Sd of the balcony floor slab SB is in contact with the upper end of the exterior base material 2A, the lower end surface of the panel 3 is flat, and a 4 mm thick board-based flexible board of JIS A5430 is used as the water-resistant plate 6 to insulate it. The water-resistant plate 6 is attached in a split form to the layer attachment surface 2S of the cut height 4h of the layer 2B so as not to close the fitting notch H1.
In addition, the Z muscle 1 is a truss structural muscle in which the Z upper muscle 1U and the Z lower muscle 1D maintain a sufficient center-to-center distance L15, has a high support strength, and can be arranged at a large interval (standard: 450 mm). Is.

  And, in the construction method of the present invention, the composite panel 2 and the processed composite panel 3 which are factory-produced products are used as an outer round frame of the outer wall W in a conventional mold frame as shown in FIG. If the non-combustible support block 4 which is a factory-produced product is fitted and fastened to a fitting notch H1 arranged at a large interval at the upper end of the processed composite panel 3 erected as an outer wall formwork, the Z-strip 1 can be arranged. , Balcony floor slab formwork, concrete outer wall formwork, living section floor slab formwork, and after placing the concrete in each formwork, balcony floor slab SB is insulated from concrete outer wall W It can be constructed in the form of heat shut off.

Therefore, since the number of the Z bars 1 is small, the workability is significantly improved compared to the conventional bar arrangement work in the first and second examples, and the new and high quality outer wall of claim 1 can be reasonably constructed.
Moreover, since the processed composite panel 3 includes a waterproof plate in the cast concrete contact area of the balcony floor slab SB, the exterior base material 2A functions in contact with the cast concrete such as a moisture-permeable magnesium cement plate. Inferior thin rigid plates can be used, and the degree of freedom in selecting the exterior base material 2A in the process of manufacturing the composite panel 2 is improved.

In addition, the non-combustible support block 4 used in the invention of the construction method is, for example, as shown in FIG. 5 (B), on both side surfaces 4S, in the heat-insulating layer 2B end surface and the water-resistant plate 6 end surface, and in the sealing notch H1. The fitting is preferably fixed.
In this case, as shown in FIG. 4 (A), typically, the non-combustible heat insulating material 4B has a width X4 smaller than the width W4 (standard: 60 mm) of the fitting notch H1. (X4 standard: 50 mm), and a gap follower sheet 12A (standard: 2 mm thickness) is adhered to both side surfaces 4S of the non-combustible heat insulating material 4B, avoiding the contact portion with the groove G of the heat insulating layer 2B. Thus, if the non-combustible support block 4 is inserted into the fitting notch H1, the fitting operation is easy, and after fitting, the gap follow-up sheet 12A expands with time so that the air-tight sealing is fixed.
And when the non-combustible support block 4 is air-tightly sealed in the fitting notch H1, the air layer in the gap between the non-combustible support block 4 and the heat insulating layer 2B also functions as an air-insulating layer in a sealed form. Loss of thermal insulation function due to fitting is avoided.

  Further, in the construction method, as shown in FIGS. 3B and 6, a seating groove 2G extending over the thickness T3 of the heat insulating layer 2B is formed at an appropriate position on the upper end of the heat insulating layer thick part 2C of the processed composite panel 3. The T-joint 7 having the horizontal blade 7F and the vertical blade 7W having the nail hole H7, and the horizontal blade 7F in the seating groove 2G and the vertical blade 7W in the rear surface of the heat insulating layer 2B in the concrete mold frame. It is preferable to nail the heat insulating layer 2B in contact with Br.

In this case, the seating groove 2G may be the same size as the thickness of the horizontal blade 7F, and the T-shaped joint 7 may be a heat-insulating plastic molded product having a thickness of 3 mm.
If the adhesive tape 12B is disposed on the lower surface of the horizontal blade 7F, the T-joint 7 can be attached easily.
Then, if the T-joint 7 is fixed to the upper end of the processed composite panel 3 and the concrete is placed, the vertical blade 7W on the lower side of the T-joint 7 is made of concrete of the residential floor slab SA as shown in FIG. Therefore, during the upper and lower connecting arrangement work of the processing composite panel 3 on the upper floor, the vertical blade 7W on the upper side of the T-joint 7 performs the positioning function and the fixing function of the lower end of the processing composite panel 3, and the upper floor mold Framework work becomes easy.

Moreover, as for the T-shaped joint 7, as shown to FIG. 6 (A), it is especially preferable that the upper vertical braid | blade 7W is equipped with the hole H7 'for bolt insertion.
In this case, as shown in FIG. 2 (B), the heat insulation layer back surface Br of the processed composite panel 3 on the upper floor is brought into contact with the vertical blade 7W on the upper side of the T-shaped joint 7 at the time of constructing the wall formwork on the upper floor. The panel 3 and the upper vertical blade 7W can be fixed to the nail hole H7 with the heat insulating anchor 14A by penetrating the bolt 14B and the bolt insertion hole H7 ′ penetrating the panel 3, and the outside of the outer wall W. The fixed position of the processed composite panel 3 as the wall mold F0 can be ensured.

  The incombustible support block 4 used in the outer wall construction method according to claim 6 of the present application is a rectangular cube incombustible heat insulating material 4B having a height Z4, a thickness Y4 and a width X4, as shown in FIG. On the symmetrical inner surface 4D of each non-combustible heat insulating material piece 4B 'in a form divided into left and right in the non-combustible heat insulating material piece 4B', the fitting grooves H2, H2 ', H3 of the Z line 1 are arranged symmetrically, and the upper end of the Z The Z-strip 1 obtained by joining and integrating the streak 1U and the Z-bottom streak 1D with the Z truss bar 1M while maintaining the center distance L15 is fitted into the fitting grooves H2, H2 ', H3, and the symmetrical inner surface 4D is formed. Bonded and integrated.

In this case, the non-combustible heat insulating material 4B typically employs a calcium carbonate foam plate lock cell board (Fuji Kasei Kogyo Co., Ltd., trade name).
The non-combustible heat insulating material 4B has a thermal conductivity of 0.032 kcal / mh ° C. (plastic heat insulating material is 0.022 to 0.037 kcal / mh ° C.) and a moisture permeability of 0.038 g / m ² hmmHg (plastic heat insulating material). Is 0.02 to 0.14 g / m ² hmmHg), and the compressive strength is 1.8 kgf / cm ² (plastic insulation is 0.5 to 2.0 kgf / cm ² ), almost equivalent to the plastic insulation layer 2B Therefore, it can be suitably employed in a fitting embedded form in the heat insulating layer 2B of the panel 3.
Further, the height Z4 of the incombustible heat insulating material 4B is the same as the exposed height (cutting height of the exterior base material 2A) 4h (standard: 200 mm) at the upper end of the heat insulating layer 2B of the panel 3, and the thickness Y4 is The processed composite panel 3 has the same size as the thickness T1 (standard: 87 mm), and the width X4 can be inserted into the width W4 (standard: 60 mm) of the fitting notch H1 of the heat insulating layer 2B of the panel 3. It ’s fine.

  Also, the non-combustible heat insulating material piece 4B ′ is divided into two incombustible heat insulating materials by dividing one non-combustible heat insulating material 4B having a width X4 (standard: 50 mm) into two equal widths X2 (25 mm). As shown in FIG. 4 (B), fitting grooves H2, H2 ′, and H3 for fitting the central portion of the Z-strip 1 to each cut inner surface 4D of the piece 4B ′ are, for example, table type It may be formed with a polystyrene foam cutter (Sakaguchi Electric Heat Co., Ltd., trade name), or a non-combustible heat insulating material piece 4B provided with plane-symmetric fitting grooves H2, H2 ′, H3 using a mold having a desired form. 'May be prepared as a molded product.

Further, the Z-stripe 1 only needs to be fixedly held by the non-combustible support block 4, and when integrating the non-flammable heat-insulating material pieces 4B ', the inner diameter dimensions of the fitting grooves H2, H2', and H3 are set to the Z-stripe. 1 may be fixed to the fitting groove with an adhesive, and both non-combustible heat insulating material pieces 4B ′ may be fixed to the inner surface 4D. However, the fitting grooves H2, H2 may be used. It is preferable that the inner diameter dimension of ', H3 is 5 to 6 mm larger than the Z-strip 1 diameter, and the non-combustible heat insulating material piece 4B' is bonded and integrated by winding the gap follower sheet 12A having a thickness of 2 mm around the Z-strip 1.
In addition, in order to obtain a strong fixing force with the concrete, the Z reinforcement 1 is preferably a deformed steel bar. If a rust-prevention paint is applied in advance over the entire length, the Z reinforcement 1 in the concrete Corrosion of the muscle 1 can also be suppressed and the durability of the Z muscle is improved.
In this case, if a fireproof paint is applied in advance to the portion located in the non-combustible support block 4 of the Z line 1, the fire resistance of the Z line 1 is further improved by the non-combustible heat insulating material 4B and the fireproof paint. .

Therefore, the incombustible support block 4 of the present invention is manufactured as a factory-produced product using the non-combustible heat insulating material piece 4B ′ manufactured in the factory in a predetermined homogeneous form from the Z-strip 1 manufactured in the factory in a predetermined size and shape. Therefore, the cantilevered balcony B constructed with the non-combustible support block 4 can be prepared as a product with uniform dimensions and functions, streamlined construction of a fire-resistant balcony floor slab SB, Will be.
Further, since the Z upper muscle 1 itself maintains the center distance L15 and integrates the Z upper muscle 1U and the Z lower muscle 1D, the Z upper muscle 1U and the Z lower muscle 1D are separated from each other in terms of strength. In comparison, the support strength can be 3.64 times greater than that employed.
Moreover, since the non-combustible support block 4 is formed by integrating the light non-combustible heat insulating material 4B into the Z-strip 1, it can be easily transported and stored, and can be handled as a product and deployed to the construction site. .

Further, in the invention of the non-combustible support block 4, as shown in FIG. 2, the Z truss bar 1M has a Z at the central horizontal upper side 1U ′ at the lower surface of the Z upper bar 1U and at both horizontal lower sides 1D ′. It is preferable that the upper surface of the lower end reinforcement 1D is fixedly integrated with each other, and the both side intermediate inclined portions 1S are each at an included angle of 45 ° with respect to the Z lower end reinforcement 1D.
In this case, the Z upper muscle 1U mainly resists the tensile stress, and the Z lower muscle 1D opposes the compressive stress, but the Z truss 1M has an inclination angle (an included angle) of 45 °. It suitably copes with the shear stress action at the working interface with the compressive stress.
Moreover, since the Z truss bar 1M has a left-right symmetric configuration, if the left and right protrusions AP, BP are symmetric, the left and right direction of the Z bar 1 can be applied when manufacturing the incombustible support block 4. This makes it possible to handle the Z-strip 1 conveniently.
Therefore, it is possible to rationalize the production of the Z-stripe having a strong support force, the maintenance management, and the production of the incombustible support block.

Further, as shown in FIG. 4, the Z-strip 1 is inserted into the non-combustible heat insulating material 4B from the front surface F4 and the rear surface B4 of the non-combustible heat insulating material 4B, and the fitting grooves H2, H2 ′, H3 are formed by the gap following sheet 12A. It is preferable to fill and fill the fireproof sealing 13 from the front surface F4 and the rear surface B4 of the fitting grooves H2, H2 ′, H3 to the gap following sheet 12A.
In this case, the gap follower sheet 12A typically employs a 2 mm thick softlon (Sekisui Chemical Co., Ltd., trade name), and the gap follower sheet 12A includes the front surface F4 of the incombustible heat insulating material 4B and What is necessary is just to wind around the Z line | wire 1 in the position which entered about 10 mm from the rear surface B4.

  Therefore, the Z-strip 1 is fixed in close contact with the fitting grooves H2, H2 ′, H3 by the time-dependent expansion of the gap following sheet 12A in contact with the air, and a space between the front and rear gap following sheets 12A is a sealed air layer. The outside of the gap following sheet 12A exhibits heat insulation, and the fire resistance of the Z-strip 1 is also ensured by filling the fireproof sealing 13, and the incombustible support block 4 is inserted into the heat insulation layer 2B of the processed composite panel 3 and used. However, it exhibits a sufficient heat insulating function and ensures the fire resistance of the Z-strip 1.

In the non-combustible support block 4, the non-combustible heat insulating material 4B has a width X4 smaller than the width W4 of the fitting notch H1 of the processed composite panel 3 and a thickness Y4 as shown in FIG. 3 is the same size as the panel thickness T1, and the height Z4 is preferably the same size as the depth 4h of the fitting notch H1.
In this case, if the width X4 of the incombustible heat insulating material 4B is smaller than the width W4 of the fitting notch H1, it is easy to fit the incombustible support block 4 into the composite panel 3 at the time of formwork.
Then, for the fitting notch H1 having a standard width W4 of 60 mm, a nonflammable heat insulating material 4B having a standard width X4 of 50 mm is provided on both side surfaces 4S as shown in FIG. If the sheet 12A is stuck and inserted, the non-combustible support block 4 becomes an airtight tight fitting fit and fixation in the fitting notch H1 due to the expansion of the gap following sheet 12A for 1 to 2 hours after insertion.
Then, as shown in FIG. 5B, if the gap follower sheet 12A is disposed at a position where it does not interfere with the groove G and before and after the nonflammable heat insulating material 4B, the gap between the nonflammable heat insulating material 4B and the panel heat insulating layer 2B is It becomes a sealed air insulation layer, and the processed composite panel 3 is a panel of only the heat insulation layer 2B without the fitting notch H1 on the ventilation function surface and the heat insulation function surface even if the different incombustible support block 4 is inserted. The balcony floor slab SB can be constructed in a structure simply arranged on the processed composite panel 3.

In the outer wall structure according to the present invention, the reinforced concrete balcony floor slab SB is thermally insulated from the reinforced concrete outer wall W by the heat insulating layer 2B so as to protrude from the reinforced concrete outer wall W. The outer wall structure is able to block the action and suppress the thermal bridge action.
And since Z line | wire 1 which hold | maintains the balcony floor slab SB in the cantilever support form is hold | maintained in the heat insulation layer 2B by the nonflammable support block 4, it does not deteriorate by combustion of the heat insulation layer 2B at the time of a fire. It becomes a fire-resistant balcony B.
Further, the protruding portion AP of the Z-strip 1 toward the concrete frame CF can be bent as necessary and fixed in the concrete outer wall W, so that the protruding position of the balcony floor slab SB with respect to the outer wall W is free. Thus, the degree of freedom in designing the balcony B is improved.

Further, since the Z-stripes 1 have a strong support force, the arrangement intervals between the Z-strips 1 can be widened, and the formwork and the bar-laying work at the time of constructing the balcony floor slab SB can be rationalized. The outer wall structure can be rationalized in terms of construction period and cost, and the number of Z-strands 1 that are the only thermal bridge route is small, so the thermal bridge from the balcony B is suppressed and the outer wall is ventilated. It is possible to provide a high-quality balcony-equipped building that does not cause internal condensation.
Further, since the Z-strip 1, the non-combustible support block 4, and the processed composite panel 3 can all be prepared as factory-produced products, the outer wall structure is uniform and quality is guaranteed.

In the construction of the outer wall structure, since the number of Z bars 1 arranged is small, the workability of the mold frame is much improved compared to the conventional bar arrangement work in the first and second examples.
Moreover, the processed composite panel 3 has the water-resistant plate 6 interposed in the concrete contact area of the balcony floor slab SB, that is, the entire surface of the base end Bb of the balcony floor slab SB. For example, a lightweight and moisture-permeable exterior base material such as a magnesium cement plate 2A can be used for the composite panel 2 and the processed composite panel 3.
And also in the mold form of the balcony floor slab SB, the processed composite panel 3 is adopted as the outer formwork of the outer wall by a conventional method, and the non-combustible support block 4 provided with the Z stripe 1 is used as the notch H1 for fitting the outer formwork. Since it only has to be fitted, the formwork becomes easy, and the protruding construction of the fire-resistant balcony floor slab SB can be rationally constructed by the conventional formwork work.

  In addition, the non-combustible support block 4 of the present invention can be prepared with a uniform quality as a Z-strip 1 in the form of a truss bar having a strong support force as a factory product, and the Z-strip 1 to the non-combustible heat insulating layer 4B. Since non-combustible support block 4 can be prepared as a homogeneous mass-produced product with supporting force, heat insulation and fire resistance, the weight of non-combustible heat insulating material 4B is added to the weight of Z-strip 1 as well. It is easy to carry and maintain, and can be easily deployed to various work sites. The use of high-quality externally insulated reinforced concrete buildings with a cantilevered balcony B is widespread. It is effective for.

[Shape of the balcony (Figs. 1 and 2)]
1 is a partially cutaway perspective view of an outer wall structure provided with a balcony B to be implemented. FIG. 2A is a longitudinal sectional view, and FIG. 2B is a partially enlarged view of FIG. .
As shown in FIGS. 1 and 2, the balcony B covers the outer surface Wf of the concrete outer wall W having a wall thickness TW of 180 mm as a load-bearing wall of the concrete frame CF with the processed composite panel 3 having a thickness T1 of 87 mm. From the outer surface Wf of the concrete outer wall W, it protrudes in a cantilevered manner with the heat insulating layer 2B interposed.
The balcony floor slab SB has a depth LB of 1500 mm, a thickness TB of 180 mm, and a parapet P having a height Ph and a width Pw of 150 mm at the long side edge. As shown in FIG. 1, the bottom surface sd ′ of the living part floor slab SA and the balcony floor slab SB are formed in a cantilevered form from the concrete frame only by the group of Z bars. The lower surface sd of this is projected on the same plane.

[Composite panel for general wall (Fig. 3)]
The general wall composite panel 2 is also used for processing and manufacturing the processed composite panel 3 employed at the balcony arrangement position, and covers the general wall portion of the concrete outer wall W with a breathable outer heat insulating coating.
That is, as shown in FIG. 3A, the panel 2 has a heat insulation layer 2B having a width BW of 900 mm, a thickness T3 of 75 mm, a height 1h of 2700 mm (standard floor height), a width AW of 900 mm, and a thickness T2. Is 12 mm and the height is 2680 mm, and the heat insulating layer 2B protrudes 40 mm (d3) at the upper end, enters 20 mm (d4) at the lower end, and shifts the outer base material 2A by 10 mm (d1) in the width direction. In the composite panel 2, a 20 mm horizontal joint is formed between the exterior base materials 2 A in the upper and lower connection portions of the composite panel 2, and a phase-separated connection that does not cause a vertical joint is possible in the left and right connection portions, and The separator insertion hole hs and the bolt insertion hole hb are arranged at appropriate positions.

As the heat insulating layer 2B, a rigid urethane foam of JIS A9511 is adopted, and as shown in FIG. 3C, a ventilation groove G having a width a1 of 50 mm and a depth Gd of 15 mm is formed on the layer attachment surface 2S. The thick portions 2C are arranged alternately with the thick portions 2C and at both ends in the width direction.
That is, as shown in FIG. 3C, the arrangement of the grooves G group is such that the width 900 mm (BW) of the heat insulating layer 2B is 300 mm in the center CB, right RB, and left LB, and the width in the right RB and left LB. Three strips of a1 having a thickness of 50 mm and a thick portion 2C having a width of a2 of 50 mm are arranged in such a manner that the outer end is the thick portion 2C, and a strip having a width of a1 (50 mm) in the center CB. Two pieces are arranged between three thick portions 2C having a width a3 (200 mm / 3).
As the exterior base material 2A, a lightweight, high-strength, moisture-permeable magnesium cement board (Nittobo Industries, Ltd.) made of magnesium oxide and cinnabar as the main components and embedded in both sides with a glass fiber nonwoven fabric and formed to a thickness of 12 mm. Co., Ltd.) is available as a thin board light (trade name).

[Processed composite panel (Fig. 3)]
The processed composite panel 3 is obtained by processing only the upper end and the lower end of the composite panel 2 for a general wall so as to be used for the construction of the balcony floor slab SB. The lower end edge of the panel 3 includes the heat insulating layer 2B and the exterior base. The material 2A is flattened, and at the upper end of the panel 3, as shown in FIG. 3 (B), the exterior base material 2A is cut off in the contact area of the base end Bb surface of the balcony floor slab SB to increase the heat insulating layer 2B. A fitting notch H1 for mounting the non-combustible support block 4 provided with the supporting Z-strips 1 is arranged in the exposed portion of the heat insulating layer 2B at a height of 4h, and the fitting notch H1 is provided. A water-resistant plate 6 for protecting the groove G group is attached so as not to interfere.

  That is, as shown in FIG. 3 (B), at the upper end of the panel, the heat insulating layer 2B is exposed by a height 4h (200 mm) corresponding to the thickness TA (200 mm) of the living part floor slab SA. The exterior base material 2A is cut out, and two of the fitting cutouts H1 having a width W4 of 60 mm are provided on the exposed portion of the heat insulating layer 2B having a height of 4 h at a position W1 (standard: 225 mm) from the side edge and 450 mm. At an interval, the thick portion 2C is formed, and the water-resistant plate 6 of a 4 mm thick board-based flexible board (JISA5430) is adhered to the layer attachment surface 2S so as not to interfere with the front surface of the fitting notch H1. The front surface of the groove G is protected, and it prepares in the form which has arrange | positioned the seating groove | channel 2G which mounts the T-shaped joint 7 in the upper end surface suitable place (standard: 2 places) of the thick part 2C of the heat insulation layer 2B.

[Z-strip (Fig. 2, Fig. 4)]
As shown in FIG. 2, the Z bar 1 is composed of a Z floor upper bar 1U for tensile stress bearing and a Z lower bar 1D for compressive stress bearing of a balcony floor slab SB, a horizontal upper side 1U ′ in the center and a horizontal upper side. The Z truss muscle 1M provided with an intermediate inclined portion 1S on both sides inclined downward at an angle θ of 45 ° from both ends of the portion 1U ′ and a horizontal lower side portion 1D ′ extending outward from the lower end of the intermediate inclined portion, The center distance L15 is maintained and the upper and lower parts are bonded and fixed together.

That is, the Z bar 1 is a member that supports the floor slab SB of the reinforced concrete balcony B of the cantilever support type.
The resistance (drag) against the bending stress (compressive stress, tensile stress) caused by the fixed load + loading load borne by the balcony B is determined by the diameter of the steel bar that is fixed from the balcony B to the concrete frame CF side and the arrangement interval. The moment M is represented by the general formula: M = at × ft × j .
Here, at is the cross-sectional area of the tensile reinforcing bar, ft is the allowable tensile stress degree of the reinforcing bar, and j is the stress center distance of the bending material.

The possibility of adopting the Z streaks 1 when arranged at 450 mm intervals on the balcony floor slab SB (depth LB: 1500 mm, floor slab thickness TB: 180 mm) of this example is as follows.

Diameter 19mm Diameter 22mm Diameter 25mm
Total length (mm) of Z upper end muscle 1U 1276 1200 1144
Overall length (mm) of Z lower end muscle 1D 793 760 727
Weight (kg) 5.0 6.3 7.3
Application price (yen) 320 403 500
Strength margin (%) 43 58 68
Balcony tip displacement (mm) 2.6 2.0 1.7
Residential floor slab SA and heat insulation layer 2B
Displacement amount of the contact part with (mm) 0.3 0.3 0.3
* All the Z truss bars 1M use 16mm deformed bar steel in the same form.

  From the above calculation, the Z bar 1 has a diameter of 22 mm and a length of 1200 mm as the Z upper bar 1U, and a bar of 22 mm and a length of 760 mm as the Z lower bar 1D. 16mm, horizontal upper side 1U ', horizontal lower side 1D' on both sides is 80mm, and intermediate steel 1S has an inclined angle θ of 45 °. Abutting on the lower surface of 1U, welding from both sides to form a fixing portion ZU, horizontal lower side portions 1D 'on both sides of the Z truss bar 1M abutting on the upper surface of the Z lower end bar 1D, and welding from both sides to form a fixing portion ZD As shown in FIG. 2 (B), the steel bars 1U, 1D, and 1M are assembled into a truss, the distance L14 between the Z upper bar 1U and the Z lower bar 1D is maintained at 70 mm, and the center bar L15 is 92 mm. Epoxy resin with excellent anti-corrosion, workability, and heat insulation over the entire length The paint fireproof coat primer (ESK Kaken Co., Ltd., trade name) is applied twice as a rust preventive paint, and the SK fireproof coat (SKE Co., Ltd.) is further applied to the part located in the central heat insulating material 4B. A Z-stripe 1 was prepared by applying Kenken (trade name).

[Non-combustible support block (Fig. 4)]
4A is a perspective view of the incombustible support block 4, and FIG. 4B is an exploded perspective view of the incombustible support block 4. FIG.
As shown in FIG. 4A, the incombustible support block 4 has a thickness Y4 of 87 mm which is the same size as the thickness T1 of the composite panel 3, and a height Z4 of the depth of the fitting notch H1 of the heat insulating layer 2B. The non-combustible heat insulating material 4B having the same dimension (standard: 200 mm) as the height 4h of the exposed portion of the heat insulating layer 2B and having a width X4 penetrates and holds one of the Z bars 1.
As the incombustible heat insulating material 4B, a lock cell board (Fuji Kasei Kogyo Co., Ltd., trade name) made of calcium carbonate foam is used.
Then, as shown in FIG. 4 (B), the non-combustible heat insulating material 4B is divided into two non-combustible heat insulating material pieces 4B 'by dividing the width X4 into two, and the ½ width (25 mm) X2 is cut. On the inner surface 4D, the fitting groove H2 for the Z upper end muscle 1U constituting the Z line 1, the fitting groove H2 'for the horizontal upper side 1U' of the Z truss line 1M, and the Z lower end line 1D are symmetrically provided on the inner surface 4D. The fitting grooves H3 are formed so that the fitting grooves H2, H2 ′, H3 are slightly larger (standard: 6 mm) than the diameter of the fitting bars (1U, 1D, 1M).
The vertical position of the fitting grooves H2, H2 ′, H3 in the non-combustible heat insulating material piece 4B ′ may be determined from the balcony floor slab thickness TB (180 mm) and the concrete covering thickness of the Z reinforcement 1, and the Z upper end reinforcement. The upper end of 1U may be 53 mm below the upper end of the incombustible heat insulating material 4B, and the lower end of the Z lower end bar 1D may be 33 mm above the lower end of the incombustible heat insulating material 4B.

In this case, if a table type polystyrene foam cutter is used, desired fitting grooves H2, H2 ', and H3 can be formed smoothly.
Next, the front and rear two positions located in the non-combustible heat insulating material 4B in the center of the Z-strip 1, that is, the position of the non-combustible heat insulating material 4B at a distance d12 (standard: 10 mm) from the front surface F4 position LF-LF, and the rear surface A gap following sheet 12A (Sekisui Chemical Co., Ltd., Softlon (trade name)) having a thickness of 2 mm and a width of 20 mm is wound around the position where the distance d12 (standard: 10 mm) is maintained from the B4 position LB-LB. An adhesive is applied to the inner surface 4D of the non-combustible heat insulating material piece 4B ', and the Z streaks 1 are fitted into the fitting grooves H2, H2', H3 of the non-combustible heat insulating material pieces 4B 'on both sides, thereby dividing the non-combustible heat insulating material piece 4B. 'Is fixed and integrated with one incombustible heat insulating material 4B.

The gap following sheet 12A expands with time in the thickness direction in the integrated non-combustible heat insulating material 4B, fills the gap between the Z stripe 1 and the fitting grooves H2, H2 ′, H3, and the Z stripe 1 Adhere and hold.
Next, by filling the fitting grooves H2, H2 ′, H3 of the non-combustible heat insulating material 4B with the fireproof sealing 13 from the front surface F4 side and the rear surface B4 side using a conventional sealing gun, the inner clearance follower sheet 12A is provided. And the outer fireproof sealing 13 form a non-combustible support block that elastically holds the Z-strip 1.
In addition, if a clearance gap arises in the joint surface between the nonflammable heat insulating material pieces 4B 'on both sides, the fireproof sealing 13 may be filled in the clearance.
The formed non-combustible support block 4 includes, as shown in FIGS. 4 (A) and 5 (B), a front end exterior base material 2A contact position on both side surfaces 4S, an intermediate and a rear end heat insulating layer. A clearance follower sheet 12A with a protective sheet is attached to the 2B contact position, and a double-sided adhesive tape with a protective sheet is attached to the lower surface of the non-combustible support block 4 to prepare as a factory product. .

[T-joint (Fig. 6)]
6A is a perspective view of the T-shaped joint 7, and FIG. 6B is a partially cutaway perspective view of the processed composite panel 3 on which the T-shaped joint 7 is arranged.
As shown in FIG. 2, the T-joint 7 is a joint member used when the processed composite panel 3 for a balcony is connected up and down. As shown in FIG. 7A, the T-joint 7 is seated on the upper end of the processed composite panel 3. This is a plastic molded product having a T-shaped section and a wall thickness of 3 mm, comprising a horizontal blade 7F placed in the groove 2G and upper and lower vertical blades 7W for contacting the back surface Br of the heat insulating layer 2B of the processed composite panel 3. .
The dimensional relationship is that the height 7h is 80mm, the width 7L is slightly smaller (standard: 2mm) than the width a2 (50mm) of the thick portion 2C of the heat insulating layer 2B, 48mm, and the horizontal blade protruding from the vertical center of the vertical blade 7W. The protruding length 7T of 7F is 73 mm which is slightly (standard: 2 mm) smaller than the thickness T3 (75 mm) of the heat insulating layer 2B.
Then, a nail hole H7 having a diameter of 3 mm is drilled at an appropriate position of the horizontal blade 7F and the vertical blade 7W, and a drop prevention bolt 14B (diameter: 7.. 5mm), a 12 mm diameter bolt insertion hole H7 'is drilled, and a double-sided adhesive tape 12B is attached to the lower surface of the horizontal blade 7F for preparation.

[Construction of balcony (Fig.5, Fig.7)]
As shown in FIG. 7, the concrete mold frame is a processed composite panel 3 for a balcony having an exterior base material 2A as an outer surface as an outer wall outer mold frame F0, and together with the outer wall inner mold frame F1, an outer wall mold by a conventional mold frame means. The frame FW is formed, the mold FA of the residential floor slab SA is formed inside the composite panel 3 on the outer wall mold FW, the balcony floor slab mold FB is formed outside the composite panel 3, and the conventional mold framework. Consists of means.
In the fitting notch H1 of the composite panel 3 erected with the mold frame and having a width W4 of 60 mm, a gap following sheet having a width X4 of 50 mm and a thickness of 2 mm on both side surfaces 4S shown in FIG. The nonflammable support block 4 having 12A is peeled off the curing paper (protective sheet) of the gap follower sheet 12A on both sides and the curing paper of the double-sided adhesive tape 12B on the lower surface, as shown in FIGS. The incombustible support block 4 is fitted and seated in alignment with the heat insulating layer 2B.
In this case, the gap tracking sheet 12A closes the gap with the edge of the exterior base material 2A of the panel 3 and the gap with the edge of the heat insulating layer 2B by expansion over time.

And as shown in FIG. 7, the protrusion part AP of the Z line | wire 1 which protruded into the living part floor slab formwork FA from the incombustible support block 4, and the protrusion part of the Z line | wire 1 protruded into the balcony floor slab formwork FB The position of the BP is held by the spacers 11A and 11B in each formwork, and the vertical wall 8A, the horizontal line 8B, and the width stop line 8C are provided in the outer wall formwork FW by a conventional method. In the FB, the long side direction upper end reinforcement 9A, the long side direction lower end reinforcement 9B, the short side direction upper end reinforcement 9C, and the short side direction lower end reinforcement 9D are also arranged in the living part floor slab formwork FA. The projecting portions AP and BP of the Z-strip 1 are respectively fastened with the reinforcing bar in the mold and the wire as necessary.
Next, as shown in FIG. 6, the horizontal blade 7F of the T-joint 7 is disposed in the shallow (standard: 3 mm) seating groove 2G on the upper end surface of the heat insulating layer 2B.
In this case, the curing paper of the double-sided adhesive tape 12B on the lower surface of the horizontal blade 7F is peeled off, and the vertical blade 7W is brought into contact with and adhered to the back surface Br of the heat insulating layer 2B.
Then, the T-joint 7 is fixed to the upper end surface of the heat insulating layer 2B of the panel 3 by nailing the lower vertical blade 7W and the horizontal blade 7F of the bonded T-joint 7 into the nail hole H7.

Next, when concrete is placed into the wall formwork FW, the living part floor slab formwork FA, and the balcony floor slab formwork FB, and the formwork is disassembled after the placement concrete is hardened, FIG. 2 (A) shows. Thus, the balcony floor slab SB can be constructed in a structure in which the concrete frame CF is heat-insulated by the heat insulating layer 2B and is cantilevered only by the Z-strip 1.
The construction of the concrete balcony floor slab SB on the upper floor may be performed in the same manner as the existing balcony floor slab SB on the lower floor.
When constructing the balcony floor slab SB on the upper floor, as shown in FIG. 2B, the lower vertical blade 7W of the T-joint 7 is embedded in the hardened concrete, and the upper vertical blade 7W protrudes upward. Therefore, when the processing composite panel 3 is erected, the protruding vertical blade 7W functions as a ruler, and the heat insulating anchor 14A and the heat insulating anchor 14A through the bolt insertion hole H7 ′ of the vertical blade 7W in the mold frame of the processing composite panel 3 The bolts 14B can be fastened, and the processing composite panel 3 can be easily erected and positioned and fixed.

It is a partially cutaway perspective view of the outer wall structure of the present invention. It is explanatory drawing of the outer wall structure of this invention, Comprising: (A) is a longitudinal cross-sectional view, (B) is the principal part enlarged view of (A). It is explanatory drawing of the composite panel employ | adopted for this invention, Comprising: (A) is a partially cutaway side view of the composite panel for general walls, (B) is a partially cutaway perspective view of a process composite panel, (C) is (B) FIG. It is explanatory drawing of the nonflammable support block used for this invention, Comprising: (A) is a perspective view, (B) is a disassembled perspective view. It is explanatory drawing which integrated the nonflammable support block of this invention with the panel, Comprising: (A) is a perspective view, (B) is a top view. It is use explanatory drawing of a T-shaped joint, (A) is a T-shaped joint perspective view, (B) is the elements on larger scale of a process composite panel. It is a principal part longitudinal cross-sectional view of the type | mold framework of this invention. It is explanatory drawing of the prior art example 1, Comprising: (A) is a balcony longitudinal cross-sectional view, (B) is a reinforcing bar unit front view, (C) is a top view of a reinforcing bar unit. It is explanatory drawing of the prior art example 2, Comprising: (A) is a balcony longitudinal cross-sectional view, (B) is a principal part enlarged view of (A), (C) is explanatory drawing of a heat insulating material.

Explanation of symbols

1 Z line 1D Z bottom line 1D 'Horizontal lower side part 1M Z truss line 1S Middle inclined part 1U Z upper side line 1U' Horizontal upper side part 2 Composite panel (panel)
2A Exterior base material (magnesium cement board)
2B Heat insulation layer 2C Thick part 2G Seating groove 2S Layer surface 3 Processing composite panel (composite panel, panel)
4 Incombustible support block 4B Incombustible heat insulating material 4B 'Incombustible heat insulating material piece 4D Symmetric inner surface (inner surface)
4S Side surface 6 Water-resistant plate 7 T-shaped joint 7F Horizontal blade 7W Vertical blade 8A Vertical bar 8B Horizontal bar 8C Width stop bar 9A Long side upper edge 9B Long side lower bar 9C Short side upper bar 9D Short side lower bar 10A Board 10B Neta 10C Large pull 10D Pipe support 11A, 11B Spacer 11C Separator 12A Gap following sheet 12B Double-sided adhesive tape (adhesive tape)
13 Fireproof Seal 14A Insulation Anchor 14B Bolt 16A Sealing 16B Backup Material A Residential Section
AP, BP Protrusion B Balcony B4 Rear surface Bb Base end Br Insulation layer back (back)
CF concrete frame F4 front F0 outer wall outer formwork (outer wall formwork)
F1 outer wall inner formwork (inner wall formwork)
FA Residential floor slab formwork FB Balcony floor slab formwork FW Exterior wall formwork G Groove for ventilation (strip)
hb Bolt insertion hole hs Separator insertion hole H1 Fitting notches H2, H2 ', H3 Fitting groove H7 Nail hole H7' Bolt insertion hole L15 Stress center distance (center-to-center distance)
P Parapet SA Residential part floor slab SB Balcony floor slab Sd, Sd 'Lower surface Sf, Sf' Upper surface W Concrete outer wall Wf Outer surface ZD, ZU Weld fixing part (adhering part)

Claims (13)

It is an outer wall structure in which a reinforced concrete balcony protrudes from a reinforced concrete outer heat insulating outer wall with a cantilever support, and the concrete outer wall (W) is a layered surface of a heat insulating layer (2B) with a vertical groove (G) group (2S) is covered with a composite panel (2, 3) layered with an exterior base material (2A), and the balcony floor slab (SB) is thermally heated from the concrete outer wall (W) to the thermal insulation layer (2B) of the composite panel. One of the Z-streaks (1) that protrudes in a form that shuts off and penetrates the non-combustible support block (4) made of non-combustible heat-insulating material and fitted in the fitting notch (H1) in the heat-insulating layer (2B). The protrusion (AP) is integrally fixed in the concrete frame (CF) and the other protrusion (BP) is integrally fixed in the balcony floor slab (SB), and the balcony floor slab (SB) is separated from the concrete outer wall (W). Protruding with support Outer wall structure.
  In the composite panel (2, 3), the moisture permeability resistance of the heat insulation layer (2B) is smaller than the moisture permeability resistance of the concrete outer wall (W), and the moisture permeability resistance of the exterior base material (2A) is that of the heat insulation layer (2B). The outer wall structure according to claim 1, wherein the outer wall structure is smaller than moisture permeability resistance.   The composite panel (3) removes the exterior base material (2A) at the contact surface of the base end (Bb) of the balcony floor slab (SB), and the layering surface (2S) of the heat insulating layer (2B) and the balcony The outer wall structure according to claim 1 or 2, wherein the groove (G) group of the heat insulating layer (2B) is protected by a water-resistant plate (6) interposed at the interface with the floor slab base end (Bb) surface.   The non-combustible support block (4) has a thickness (Y4) that is the same as the thickness (T1) of the composite panel (2), and the heat insulation layer (2B) in the fitting notch (H1) of the heat insulation layer (2B). The outer wall structure according to any one of claims 1 to 3, wherein the outer wall structure is airtightly fitted.   The non-combustible support block (4) has a Z upper end line (1U) and a Z lower end line (1D), a central horizontal upper side part (1U '), an intermediate inclined part (1S) inclined downward on both sides, and a horizontal lower side on both sides. A Z truss bar (1M) provided with a portion (1D '), wherein the Z bar (1) integrated vertically with maintaining the stress center distance (L15) is held in an airtight manner. 5. The outer wall structure according to any one of 1 to 4.   Composite panel in which exterior base material (2A) is layered and integrated with foamed plastic heat insulation layer (2B) in which strip grooves (G) and thick portions (2C) are alternately arranged on the layering surface (2S) (2), in the general wall portion, the composite panel (2) is the outer wall formwork (F0), and in the balcony floor slab (SB) protruding wall portion, the composite panel ( 2) The exterior base material (2A) of 2) is cut from the upper end to a height (4h) that interferes with the base end (Bb) of the balcony floor slab (SB). A waterproof notch (4h) having a cut height (4h) is formed so as to form a fitting notch (H1) over the height (4h) in the thick part (2C) and not to interfere with the fitting notch (H1). The processed composite panel (3) in which 6) is adhered to the layering surface (2S) is referred to as the outer wall formwork (F0), and the processed composite panel (3) Z muscle (1) that integrates the Z upper end muscle (1U) and the Z lower end muscle (1D) with the Z truss muscle (1M) while maintaining the center-to-center distance (L15) in the fitting notch (H1) The nonflammable support block (4) that has been held through is fixedly fitted, and one protrusion (AP) of the Z-strip (1) is placed in the concrete frame-side formwork (FA) and the other protrusion (BP). ) Is placed in the balcony floor slab formwork (FB) to form a conventional formwork, and by placing concrete in the formwork, the balcony floor slab (SB) cantilevered from the concrete outer wall (W) The construction method of the outer wall projected by   The non-combustible support block (4) is fitted and secured to the fitting notch (H1) by air-tight sealing with the heat insulating layer (2B) end surface and the water-resistant plate (6) end surface on both side surfaces (4S). 6. Construction method of outer wall of 6.   In the processed composite panel (3), a seating groove (2G) extending over the thickness (T3) of the heat insulating layer (2B) is arranged at an appropriate position on the upper end of the heat insulating layer thick part (2C). T-joint (7) with horizontal blade (7F) and vertical blade (7W) with nail hole (H7), horizontal blade (7F) as seating groove (2G), vertical blade (7W) as thermal insulation The method for constructing an outer wall according to claim 6 or 7, wherein the outer wall is brought into contact with the back surface (Br) of the layer (2B) and nailed to the heat insulating layer (2B). The method for constructing an outer wall according to claim 8, wherein the upper vertical blade (7W) of the T-shaped joint (7) is provided with a bolt insertion hole (H7 ').   A non-combustible support block (4) used in the method for constructing an outer wall according to claim 6, wherein a non-combustible heat insulating material (4B) of a rectangular cube having a height (Z4), a thickness (Y4) and a width (X4) is used. The non-combustible heat insulating material piece (4B ') is divided into two left and right parts, and the non-combustible heat insulating material piece (4B') has a symmetrical groove (1D) fitting groove on the symmetrical inner surface (4D). (H2, H2 ′, H3) are arranged, and the Z upper muscle (1U) and the Z lower muscle (1D) are joined and integrated with the Z truss (1M) while maintaining the center distance (L15). A non-combustible support block in which (1) is fitted into fitting grooves (H2, H2 ′, H3), and a symmetrical inner surface (4D) is bonded and integrated.   The Z truss bar (1M) is fixedly integrated with the lower surface of the Z upper bar (1U) at the central horizontal upper side (1U ′) and the upper surface of the Z lower bar (1D) at the horizontal lower side (1D ′) on both sides, And the nonflammable support block of Claim 10 whose both-side intermediate | middle inclination part (1S) is an included angle of 45 degrees with respect to Z lower end reinforcement (1D), respectively.   The Z line (1) is a position where the non-combustible heat insulating material (4B) enters the non-combustible heat insulating material (4B) from the front surface (F4) and the rear surface (B4), and the fitting groove (H2, H2 ′, H3) is a gap. Filled with a follow-up sheet (12A) and filled with a fireproof seal (13) from the front face (F4) and rear face (B4) of the fitting groove (H2, H2 ', H3) to the gap follow-up sheet (12A). 10 or 11 incombustible support blocks.   The non-combustible heat insulating material (4B) has a width (X4) smaller than the width (W4) of the fitting notch (H1) of the processed composite panel (3) and a thickness (Y4) of the processed composite panel (3). The incombustible support block according to any one of claims 10 to 12, wherein the non-combustible support block has the same dimension as the thickness (T1) and the height (Z4) is the same dimension as the height (4h) of the fitting notch (H1).

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