JP5681442B2 - Trunk edge brace shear wall - Google Patents

Description

  The present invention relates to a seismic wall brace shear wall, and, in particular, regardless of whether it is newly constructed or renovated, by providing a pair of steel longitudinal body edges and a pair of steel body edge braces between columns, the strength performance of the wall is greatly increased. It relates to a new improvement for improvement.

The structure of patent documents 1 and 2 can be mentioned as a structure for improving the earthquake resistance of this kind of building used conventionally.
That is, the first conventional example shown in FIG. 11 shows a seismic control panel instead of a seismic wall, but a K-type brace similar to the present application is disclosed, which is disclosed.
The seismic control panel 30 is an energy absorbing device used for improving the seismic performance of the structure, and the device itself forms a plane frame. As shown in FIG. The second column members 4 are arranged so as to face each other, the upper end portions of the respective column members are connected by a connecting beam 31, and the lower end portions of the respective column members are connected by a connecting beam 32. The first column member 3 has an H-shaped cross-section and its strong axis direction is in-plane, and two braces 10 and 11 are attached to form an eccentric K-type brace structure (first column The web 50 while the two braces 10 and 11 are attached to each other is formed as a shear panel. It is designed to absorb energy. On the other hand, the second column member 4 has an H-shaped cross section and its strong axis direction is directed out of plane, and a buckling restraining material 19 for preventing buckling in the plane is disposed. .
(Difference between the present invention and the first conventional example)
: The present invention is a seismic wall (high proof performance). The first conventional example is a damping wall (energy absorption performance).
: (Brace arrangement) The present invention is (wood structure) installed on the outer wall side from the pillar width. The first conventional example is (steel structure column) installed in the wall.
: (Eccentricity of two braces and column core) The present invention increases the yield strength by reducing the eccentricity. In the first conventional example, the panel portion is deformed earlier by decentering to lower the yield strength.

  Moreover, in the 2nd prior art example shown by FIG.12 and FIG.13, although the wall of high yield strength is shown, if it demonstrates with reference to FIG. 12, FIG. 13, along the plane which comprises the wall panel 30, Two braces 10, 11 made of channel steel and caulking square steel are arranged in a substantially lateral V shape when viewed from the front. Then, both vertical frame members made of section steel having an approximately Ω-shaped cross section along the both side edges of the wall panel 30 at the end portions of the two braces 10 and 11 that are close to each other and the end portions that are apart from each other. The openings 3 and 4 are sandwiched and arranged, and the contact portions are joined by bolts 8. Further, in the middle part of the braces 10 and 11, the concave portions of the intermediate vertical frame member 40 made of a substantially hat-shaped steel cross section are arranged facing both sides of the braces 10 and 11, and the abutting part thereof is a drill screw or the like. It is joined with a fastener 41.

  As described above, the intermediate vertical frame member 40 having a predetermined length and the vertical frame members 3 and 4 on both sides are fixed to the braces 10 and 11 in parallel with a predetermined interval with the braces 10 and 11 being sandwiched between them. The bottom made of a thin steel sheet-shaped grooved steel so that the left and right outer flat surfaces of the vertical frame members 3, 4 and 40 are sandwiched between the upper and lower ends of each intermediate vertical frame member 40 facing the vertical frame members 3 and 4 on both sides. A frame member 42 and an upper frame member 43 are disposed, and a fastener 41 such as a drill screw is provided at the contact portion to join both members.

As described above, the brace 10, the vertical frame members 3 and 4, the intermediate vertical frame member 40, the lower frame member 42, and the upper frame member 43 form a wall frame, and the lower frame member 42 and the upper frame member 43 Each of the flanges, the left and right outer flat surfaces of the vertical frame members 3 and 4 on both sides, and the outer flat surface of each of the intermediate vertical frame members 40 facing each other have a predetermined wall thickness width and have a plane material arrangement plane (wall A frame) is configured, and an inner surface material 20 made of structural plywood is applied to one face material arrangement plane on the inner wall side of the building, and plaster is placed on the other face material arrangement plane on the outer wall side of the building. About 12.5 mm thick outer wall surface material 20a made of a board or the like is applied, and fasteners 41 such as drill screws are placed at the respective contact portions, and the inner wall surface material 20 and the outer wall surface material 20a are joined to the wall frame. doing. With the above configuration, the high-strength wall panel 30 of the building is configured.
(Difference between the present invention and the second conventional example)
: (Brace arrangement) The present invention is (wood structure) installed on the outer wall side from the pillar width. The second conventional example (wall structure) is installed inside the wall panel.
(Common points between the present invention and the second conventional example)
: (Bearing wall) Aiming for high yield strength (yield strength); (resisting compressive force) Braces resist not only tensile force but also compressive force: (brace shape) Hiring

JP 2008-261105 A JP 2004-1116036 A

Since the conventional structure for improving the earthquake resistance of the building is configured as described above, the following problems exist.
That is, in the case of the vibration control panel shown in FIG. 11, the braces 10 and 11 are arranged in a K shape in the square frame, but a buckling restraining material 19 for preventing buckling in the vibration control panel surface is provided. In this configuration, energy is absorbed by the rectangular web 50, and a plurality of ribs 51 and a backing plate 52 must be provided in the vicinity of the web 50, resulting in a complicated structure.

Moreover, in the high strength wall shown in FIG.12 and FIG.13, a frame is comprised using vertical frames, such as eight pillars, and the braces 10 and 11 which make an 8-shaped between the pillars of both sides are formed. Because it is installed, the wall itself is very heavy and can be carried by heavy machinery when it is newly constructed, but it is very difficult to bring it when remodeling and renovating.
In any of the above-described conventional configurations, a pair of braces is used, but each brace is placed in a column wall of a structure or in a wall body of a wall panel. No consideration was given to the optimum steel type for constructing a high-strength panel and the optimum steel member configuration for resisting horizontal external forces acting on the building when applied to a braided building.
Next, a comparison between the present invention and a conventional configuration will be described.
(Solving conventional problems depending on the location of braces)
The installation position of the trunk brace seismic wall according to the present invention is not inside the column wall width but outside the column surface of the building.
In the new construction, the specification of the load-bearing wall of normal wooden framed buildings and the procedure of exterior finish material installation are done by installing braces inside the column wall width to make the load-bearing wall, and exterior finish materials such as metal siding It is constructed on the upper surface with a torso attached on the surface.
As another specification, a face material such as a structural plywood is stretched outside the pillar surface to make a load-bearing wall, a torso is attached on the face material, and metal siding or ceramic siding as an exterior finish on it. There is a method of constructing. The problem with this method was that it was not possible to install a partial structural plywood so that the finished outer wall surface would not be uneven.
On the other hand, the present invention provides a brace in the space of the trunk edge that is the base of a normal exterior finish material, so that the unevenness of the outer wall surface can be obtained even with partial installation with respect to the finished surface with respect to a continuous outer wall surface. It is possible to form a high strength earthquake resistant wall. Moreover, the increase in the outer wall thickness corresponding to the plate thickness of the structural plywood is eliminated, and the burden of the weight can be reduced.
In the renovation work, when new exterior materials are applied with the existing outer wall remaining, the use of ceramic siding has been heavy on existing buildings, and light weight metal siding has often been used. However, in this case, it was only possible to renovate the exterior finish surface, and it was not possible to expect an increase in the proof stress of the load-bearing wall as a seismic reinforcement.
When the present invention is adopted in the renovation work, a high-strength seismic renovation can be performed by constructing a trunk brace seismic wall from above the finished surface of the existing outer wall, and at the same time, a light weight siding is put on it. The exterior can be repaired.

(Increased strength of seismic walls under high compressive load due to high strength steel)
The brace edge brace shear wall of the present invention is a brace that also bears a compressive force for high yield strength, and the optimum steel grade is any one of 400N, 440N, 490N, 540N, and 590N high strength steels. It is said.
By adopting a K-type brace for the vertical arrangement of the brace, it resists simultaneously the tensile and compressive forces acting on the brace when a force is applied to the building in the horizontal direction, making it a highly resistant earthquake-resistant wall. .
The brace cross-section has a shape steel shape such as light grooved steel according to the proof stress required as a seismic wall, and is suitable for the joint joint fit.
Like ordinary braces, it resists with tensile strength according to the tensile strength of the steel material, and it becomes an earthquake-resistant wall with greater strength by using high-tensile steel.
In addition, the compression ratio can be resisted with a force greater than the elastic buckling strength according to the tensile strength of the steel by setting the slenderness ratio determined by the distance to fix the brace to the critical slenderness ratio or less. It has become a high strength earthquake resistant wall.

(Weight reduction with high-tensile steel)
By adopting braced high-strength steel, the proof stress per unit area increases, and the brace thickness and cross-sectional area can be reduced compared to the proof wall with the equivalent proof strength. By reducing the thickness of this brace, the weight of the seismic wall is further reduced, and it will have a significant advantage in manufacturing parts, transporting parts, and workability on site.

(Increased strength of earthquake-resistant wall by combining with exterior materials such as metal siding)
By attaching a face material made of any siding such as metal siding, ceramic siding, cement siding, structural plywood, etc. with a drill screw etc. In addition, the shear strength of the face material is added to improve the performance of the bearing wall.
In the case where the one-touch jointer cap or the like is bonded and fixed to the steel body edge of the present invention and the exterior finish is performed, in the case where the siding face material is directly attached to the steel body edge with a drill screw or the like, It is useful for hiding screw heads and hiding joint joints between sidings. Similarly, in the case of a one-touch joint joiner cap specification that is attached with a one-touch joint joiner cap or the like with a high degree of fixation, it is useful as a joint joint concealment between sidings.
In addition, when a face material such as siding is covered on the trunk brace bearing wall, it also functions as an out-of-plane deformation cover for the brace acting on the compressive force, so that higher strength can be achieved as a seismic wall.

(Use of plated steel sheets and ZAM steel sheets)
Each steel plate part of the trunk edge brace shear wall is a high corrosion resistant steel plate to which Zn plating, Al plating, Zn—Al alloy plating, or Zn—Al—Mg alloy plating is applied.

(Assembly without welding using drill screws)
Joining of each steel plate part of the trunk brace shear wall is a non-welded joint using a drill screw or a rivet. Because it is not welded joint, repair of plating after welding is not necessary, which leads to reduction of labor. Also, since no welding equipment is required for the assembly location, it is possible to assemble at the factory or on site.

The trunk-brace seismic wall according to the present invention is provided at first and second steel vertical trunk edges that are spaced apart from each other and at a central position along the length direction of the first steel vertical trunk edges. A central joint portion, a first joint portion and a second joint portion provided at one end and the other end along the length direction of the second steel vertical trunk edge, and between the central joint portion and the first joint portion. A first steel body edge brace connected to the center joint part and a second steel body edge brace connected between the center joint part and the second joint part, and the first and second steel parts. The vertical body rim is installed on the outer wall side of the pillar of the building, and the siding is attached to the rim. The first and second steel body rim braces are the first and second steel vertical rims. are installed in the space between the edges, also, the steel furring strip brace, 400 N grade, 440 N grade, 490 N grade, 540N Kyu及The first and second steel vertical body edges according to claim 1 are configured to be attached to a pillar of a new building. The siding is provided between the two steel vertical body edges so as to cover the braces, and the first and second steel vertical body edges according to claim 1 are provided on an outer wall of an existing building. It is attached to the column from the surface, and a siding is provided between the first and second steel vertical cylinder edges so as to cover the outer wall, and the first and second steel vertical cylinders are provided. The siding is fixed directly to the edge with a drill screw, the siding is fixed to the first and second steel vertical trunk edges via a one-touch joint joiner cap, and the first , Both ends along the length direction of the 2nd steel vertical trunk edge, the beam and the base or A configuration connected to the beam, also the first, between both ends along the length direction of the second steel Tatedoen first, a configuration in which the second lateral frame is provided.

Since the trunk brace shear wall according to the present invention is configured as described above, the following effects can be obtained.
That is, first and second steel vertical drum edges arranged at intervals from each other, a central joint provided at a central position along the length direction of the first steel vertical drum edges, and the first A first steel part connected between the first joint part and the second joint part provided at one end and the other end along the length direction of the two steel vertical trunk edges, and connected between the central joint part and the first joint part. By comprising a trunk edge brace and a second steel trunk edge brace connected between the central joint and the second joint, that is, a pair of steel longitudinal trunk edges and a pair of steel trunk edges The brace edge brace shear wall can be constituted only by the brace, and the high strength bearing wall at the time of new construction and renovation in the wooden frame structure can be easily constructed.
Therefore, a larger bearing wall can be obtained with a limited wall portion.
In particular, it is possible to install the existing exterior wall without breaking it during the reconstruction work.
Moreover, the said steel body edge brace can obtain the structure which has the optimal rigidity with respect to a wooden building by comprising any 400N class, 440N class, 490N class, 540N class, and 590N class high-tensile steel plate. it can.
The first and second steel vertical body edges according to claim 1 can be easily attached to a wooden building by being attached to a pillar of a new building, and between the first and second steel vertical body edges. Is a configuration in which siding is provided to cover the brace.
Further, the first and second steel vertical casing edges according to claim 1 are attached to the pillar from the surface of the outer wall of the existing building, and the outer walls are covered between the first and second steel vertical casing edges. By providing the siding as described above, it is possible to easily obtain the bearing wall without breaking the outer wall of the existing wooden building.
Moreover, the siding can be easily provided on the surface of the outer wall by directly fixing the siding to the first and second steel vertical trunk edges with a drill screw.
Further, by fixing the siding to the first and second steel vertical trunk edges via a one-touch joint joiner cap or the like, it is possible to attach a metal siding or the like with the joint hidden.
Further, both ends along the longitudinal direction of the first and second steel vertical body edges are connected to the beam and the base or the beam, so that the strength is further increased, and it is easy to attach each steel vertical body edge. is there.
In addition, since the first and second horizontal frames are provided between both ends along the length direction of the first and second steel vertical trunk edges, the frame is configured to have higher proof stress. It becomes a panel, and conveyance becomes easy.

It is a block diagram which shows the structure for the proof stress test of the trunk edge brace bearing wall by this invention. It is a block diagram which shows the structure which provided the siding in the structure of FIG. It is a block diagram which shows the structure at the time of applying the structure of FIG. 1 to an actual wooden house. It is a block diagram which shows the structure at the time of applying the structure of FIG. 1 to an actual wooden house. FIG. 4 is an enlarged plan sectional view of a part A in FIG. 3. FIG. 4 is an enlarged front view of a part A and a part B in FIG. 3. FIG. 4 is an enlarged plan sectional view of a portion B in FIG. 3. It is XX sectional drawing of FIG. FIG. 4 is an enlarged plan sectional view of a portion C in FIG. 3. It is an enlarged front view of the C section of FIG. It is a front view which shows the conventional seismic control panel. It is a front view which shows the conventional bearing wall. It is a side view of FIG.

  In accordance with the present invention, regardless of whether it is a new construction or an existing construction, a pair of steel longitudinal trunk edges and a pair of steel trunk edge braces are provided between the columns, so that the strength of the wall is greatly improved. The purpose is to provide.

Hereinafter, preferred embodiments of a trunk edge brace bearing wall according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
FIGS. 1 and 2 are test structures for testing the strength of a seismic brace shear wall according to the present invention, which is the same as the structure actually applied to a wooden building, but resembles the state at the time of earthquake occurrence. Various kinds of hardware are used to apply a load and the like.

In FIG. 1, reference numeral 1 indicates a base on the first floor and a beam on the second floor, and a beam 2 is provided above the base or beam 1, and the base or beam 1 and the beam 2 are provided. A wooden first wooden pillar 3A and a second wooden pillar 4A are provided in a state spaced apart from each other.
Each of the wooden pillars 3A and 4A is provided with first and second steel vertical trunk edges 3 and 4 via pointed tip screws 9.
At the center position along the longitudinal direction of the first steel vertical drum edge 3, a central joint 5 is provided toward the second steel vertical drum edge 4, and the second steel vertical drum edge 4 At one end 4a and the other end 4b along the longitudinal direction, first and second joint portions 6 and 7 are provided toward the first steel vertical trunk edge 3 side.

The other end 10b of the first steel body edge brace 10 provided at the one end side 5a of the central joint portion 5 through the pointed screw 9 inclining upward is provided on the first joint portion. 6 is connected via a pointed screw 9.
The other end 11b of the second steel body edge brace 11 provided at the other end side 5b of the central joint portion 5 with the one end 11a inclined downward through a pointed screw 9 is connected to the second joint It is connected to the part 7 via a pointed screw 9.
Each of the above-mentioned steel vertical trunk edges 3 and 4 is made of, for example, a 400 N class steel material, and each of the steel cylinder edge braces 10 and 11 is a 400 N class, a 440 N class, a 490 N class, a 540 N class, and a 590 N class. It is composed of any high-tensile steel plate. A K-shaped brace is formed by the aforementioned first steel vertical body edge 3 and each steel body edge brace 10,11.

Beam ends 2a and 2b provided at both ends of the beam 2 are coupled to the first and second wooden pillars 3A and 4A by a pair of hole-down hardware 12 and 13, respectively.
The lower parts of the wooden pillars 3A and 4A are fixed on the base or beam 1 through hole-down hardware 16 and 17.
In addition, the said trunk edge brace earthquake-resistant wall 30 can be comprised only by a pair of steel vertical trunk edges 3 and 4 and a pair of steel trunk edge braces 10 and 11 at the minimum.

  Therefore, in the above-described configuration, when the actuator 18 is attached to the first beam end 2a and a load in the direction indicated by the arrow A is applied by the actuator, the first and second steel body edge braces 10, 11 Although the force in the direction indicated by arrows B and C in the extending direction and the contracting direction is applied, the results of the experiment show that the current building standards are well within the allowable range of shaking of the building when an earthquake occurs, and the earthquake resistance is sufficient. We were able to confirm the design performance necessary to ensure

FIG. 2 shows a state in which, in the structure of FIG. 1, a plate-like siding 20 is fixed to the outside of each of the steel vertical body edges 3 and 4 by a fixing member 21 made of a drill screw or the like. The siding 20 is made of any of metal siding, ceramic siding, cement siding, and structural plywood.
Moreover, although the above-mentioned steel vertical trunk edges 3 and 4 described the structure attached directly on the 1st, 2nd wooden pillar 3A, 4A in the form of FIG.1 and FIG.2, as another form, for example, Although not shown, a pair of steel body edge braces 10, 11 between the steel vertical body edges 3, 4 are provided at positions corresponding to the wooden pillars 3A, 4A on the outer surface of the mortar outer wall of the existing wooden building. By attaching the steel vertical casing edges 3 and 4 having a flat plate and the flat siding 20 between the steel vertical casing edges 3 and 4, the exterior finish is renewed and at the same time the strength of the walls of the existing building Can be greatly improved.

Next, FIG. 3 and FIG. 4 to FIG. 10 show the trunk brace seismic wall 30 shown in FIG. 1 and FIG. 2 described above as the first and second wooden pillars 3A and 4A during actual construction or renovation. On the other hand, the case where the trunk edge brace earthquake-resistant wall 30 is attached is shown.
FIG. 3 shows a case where only one body edge brace seismic wall 30 is attached, and FIG. 4 shows a case where a plurality of body brace earthquake resistant walls 30 are attached.
The case where the first horizontal frame 31 and the second horizontal frame 32 are provided at the upper part and the lower part between the steel vertical body edges 3 and 4 and the overall shape is formed in a frame shape is shown.
1 and 2 are denoted by the same reference numerals, and the description thereof is omitted to avoid duplication.

  An enlarged plan sectional view of part A of FIG. 3 is shown in an enlarged manner in FIG. 5, and a first steel vertical trunk edge 3 having a U-shaped cross section is fixed to the front surface of the first wooden pillar 3A with a drill screw or the like. A siding 20 is attached to an attachment 32 a provided on the first steel vertical trunk edge 3 via a one-touch joint joiner cap 33.

  Part B of FIG. 3 is shown enlarged in FIG. 6, and a corner part 34 between one end 3 a of the first steel vertical trunk edge 3 of the first wooden pole 3 </ b> A and one end 31 a of the first horizontal frame 31. The corner metal fitting 35 is attached to the first horizontal frame via the drill screw 8 and is further attached to the beam 2 and the first wooden pillar 3A via the pointed screw 9 so that the strength of the corner 34 is improved. It has improved.

FIG. 7 is an enlarged plan cross-sectional view of a portion B of FIG.
FIG. 9 is an enlarged plan cross-sectional view of a portion C in FIG.
FIG. 10 shows an enlarged front view of a portion C in FIG. 3. A triangular foot bracket 36 attached to the lower portion of the first horizontal frame 31 is attached to the first horizontal frame via the drill screw 8. Further, the first steel barrel edge brace 10 is attached via the pointed tip screw 9 by being attached to the beam 2 and the first wooden pole 3A via the pointed tip screw 9.
Therefore, the torso brace bearing wall 30 according to the present invention can improve the earthquake resistance by adding the resistance to the walls of all wooden buildings regardless of whether they are newly constructed or remodeled. The torso brace bearing wall 30 can also be attached from the outer surface, and the improvement of the earthquake resistance of the existing building can be easily obtained.

  The trunk brace bearing wall according to the present invention can improve the earthquake resistance of all wooden buildings regardless of whether they are newly constructed or renovated.

1 foundation (or beam)
2 beam 2a first beam end 2b second beam end 3 first steel vertical trunk edge 3A first wooden pillar 4 second steel vertical trunk edge 4A second wooden pillar 4a one end 4b other end 5 center joint 6 1st joint part 7 2nd joint part 8 Drill screw 9 Pointed tip screw 10 1st steel body edge brace 11 2nd steel body edge brace 10a, 11a One end 10b, 11b The other end 12, 13 Hole down hardware 16 Hole down Hardware 18 Actuator 20 Siding 21 Fixing member 30 Trunk edge brace earthquake resistant wall 31 First horizontal frame 32 Second horizontal frame 32a Attachment 33 One-touch joint joiner cap 34 Corner 35 Corner fitting 36 Foot metal 31a One end

Claims (8)

The first and second steel longitudinal trunk edges (3, 4) arranged at a distance from each other, and the center provided at the central position along the length direction of the first steel longitudinal trunk edge (3) A first joint portion (6) and a second joint portion provided at one end (4a) and the other end (4b) along the length direction of the joint portion (5), and the second steel vertical body edge (4) (7), a first steel body edge brace (10) connected between the central joint (5) and the first joint (6), the central joint (5) and the second joint. part (7) second steel furring strip braces (11) connected between, Tona is, the first, second steel Tatedoen (3, 4), the outer wall of the building pillars Is the torso to which the siding (20) is attached,
The first and second steel body edge braces (10, 11) are installed in a space between the first and second steel body edge braces (3, 4). Seismic wall.   The seismic edge brace anti-seismic structure according to claim 1, wherein the steel body edge brace (10, 11) is made of any one of a 400N class, a 440N class, a 490N class, a 540N class, and a 590N class high strength steel plate. wall.   The first and second steel vertical trunk edges (3,4) according to claim 1 are attached to a pillar of a new building, and between the first and second steel vertical trunk edges (3,4), The trunk brace seismic wall according to claim 1 or 2, wherein a siding (20) is provided so as to cover an outer wall side of the column. The first and second steel vertical trunk edges (3,4) according to claim 1 are attached to the pillar from the surface of the outer wall of the existing building, and the first and second steel vertical trunk edges (3,4) The trunk brace seismic wall according to claim 1 or 2 , wherein a siding (20) is provided between the outer walls to cover the outer wall.   5. The body rim according to claim 1, wherein the siding (20) is directly fixed to the first and second steel longitudinal body rims (3,4) by a drill screw (8). Brace shear wall.   The said siding (20) is fixed to the said 1st, 2nd steel vertical trunk edge (3,4) via the one-touch joint joiner cap (33), The one of Claim 1 thru | or 5 characterized by the above-mentioned. Torso brace shear wall.   Ends along the length direction of the first and second steel vertical body edges (3, 4) are connected to a beam (2) and a base or a beam (1). The trunk brace earthquake-resistant wall according to any one of 6 above.   The first and second horizontal frames (31, 32) are provided between both ends along the length direction of the first and second steel vertical body edges (3,4), respectively. The trunk edge brace earthquake resistant wall according to any one of 1 to 7.

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