JP4752382B2 - Steel frame structure low-rise building, load-bearing wall panel, load-bearing wall panel mounting member, load-bearing wall panel mounting method - Google Patents

Description

  The present invention relates to a low-rise building with a steel frame structure having a load-bearing wall panel in which a face material is attached to a frame material made of a thin lightweight steel plate as a main frame element, and a load-bearing wall used for the low-rise building with the steel frame structure The present invention relates to a load-bearing wall panel mounting member for mounting the load-bearing wall panel, and a mounting method for the load-bearing wall panel.

In a low-rise building with a steel frame structure consisting of ordinary steel columns and beams, it is common to bear the horizontal force with braces.
Such a steel structure low-rise building with a brace structure is disclosed in Patent Document 1, for example. In Patent Document 1, a plurality of metal single pillars 1 are arranged in parallel for the purpose of safely, accurately and easily constructing a beam priority steel structure having a large degree of freedom in layout. Metal braces 4a and 4b are integrally fixed between the column members 1, and a composite material for steel structure building having both column functions and brace functions is used.
Utility Model Registration No. 3055431

In Patent Document 1, in order to eliminate the on-site construction of the brace material, a composite column material in which a column and a brace are integrated is manufactured in advance, and this is installed on the beam at the site.
Certainly, in the case of Patent Document 1, the on-site construction of the brace material becomes unnecessary.
However, in the thing of patent document 1, since the brace is attached to the pillar, the pillar bears the horizontal force from the brace and the shearing force in addition to the vertical force.
For this reason, it is necessary to firmly join the column to the beam, and in order to satisfy this necessity, Patent Document 1 is provided with a top plate and a base plate that protrude outward in the entire circumference of the column.
However, when a top plate and a base plate that protrude in the outer peripheral direction of such a pillar are provided, there is a problem in that it becomes an obstacle to the construction of the wall.

  The present invention does not cause the above-described problems in Patent Document 1, and a low-rise building having a steel frame structure without the inconvenience of construction accompanying on-site construction of a horizontal force bearing member such as a brace material, a load-bearing wall panel, The object is to obtain a load-bearing wall panel mounting member and a load-bearing wall panel mounting method.

(1) The low-rise building with a steel frame structure according to the present invention has a proof strength obtained by attaching a strip made of a thin steel plate to a frame material made of a thin lightweight steel or attaching a face material to the frame material. It is a low-rise building with a steel frame structure with wall panels attached to the frame part,
The upper surface of the cross member constituting the frame member of the load-bearing wall panel has a convex portion protruding upward formed by burring, and the convex portion is bolted to the frame portion to form an upper surface of the cross member. The load-bearing wall panel is attached to the frame part so that a gap is formed between the frame part and the frame part .
Note that it is preferable that the end portion of the strip attached to the frame member is fixed with a drill screw, and the thickness of the strip is 1.6 mm or less.

(2) Moreover, the low-rise building of the steel frame structure which concerns on this invention attaches a strip which consists of a thin steel plate to the frame material which consists of a thin plate lightweight shape steel, or attaches a face material to the said frame material. It is a low-rise building with a steel frame structure in which a load-bearing wall panel is attached to the frame part,
The load-bearing wall panel is attached to the frame portion via an attachment member, and the attachment member is a long member extending along the width direction of the load-bearing wall panel, and a main body portion and the main body portion The main body portion is composed of a lower surface portion, an upper surface portion, and a side surface portion, the lower surface portion and the upper surface portion are flat, and the side surface portion is bent so that the middle portion is bent inward. A side surface provided with an upper surface portion formed of a plane continuous to the upper surface portion of the main body portion and a bent portion formed continuously from the upper surface portion and bent inward in the middle. And a bottom surface formed continuously from the side surface and formed of a flat surface .

(3) A load-bearing wall panel according to the present invention has a steel frame structure in which a strip made of a thin steel plate is attached to a frame made of a thin lightweight steel or a face plate is attached to the frame. A load-bearing wall panel that is attached to a frame part of a low-rise building, and has a convex portion protruding upward formed by burring the upper surface of a cross member that constitutes the frame material of the load-bearing wall panel. A part is bolted to the frame part and is attached to the frame part so that a gap is formed between the upper surface of the cross member and the frame part .

(4) The load-bearing wall panel mounting member according to the present invention is a load-bearing wall panel mounting member for installing the load-bearing wall panel on a frame part of a low-rise building having a steel frame structure, wherein the mounting member has the load-bearing capacity. A long member extending along the width direction of the wall panel, comprising a main body portion and end portions formed at both ends of the main body portion, and the main body portion includes a lower surface portion, an upper surface portion, and a side surface portion. The lower surface portion and the upper surface portion are flat, the side surface portion has a bent portion that is bent inward in the middle, and the end portion is an upper surface portion formed of a plane continuous with the upper surface portion of the main body portion; It is characterized by comprising a side surface portion provided with a bent portion that is formed continuously on the upper surface portion and bent inward in the middle, and a lower surface that is formed continuously on the side surface portion and has a flat surface. Is.

(5) The load-bearing wall panel according to the present invention includes a load-bearing wall panel in which a strip made of a thin steel plate is attached to a frame material made of a thin lightweight steel or a face plate is attached to the frame member. Is a method for attaching a load bearing wall panel to a frame part of a low-rise building having a steel frame structure, and projects upwardly formed by burring on the upper surface of a cross member constituting the frame member of the load bearing wall panel. Protruding portions are provided, and the protruding portions are bolted to the frame portion and attached to the frame portion so that a gap is formed between the upper surface of the cross member and the frame portion. .

In the present invention, the load-bearing wall panel has a convex portion protruding upward formed by burring on the upper surface of the cross member constituting the frame material of the load-bearing wall panel, and the convex portion is formed on the frame portion. By attaching the load-bearing wall panel to the frame portion so that a gap is formed between the upper surface of the cross member and the frame portion by bolting, the vertical force acting on the load-bearing wall panel can be absorbed. Since the horizontal force acting in the out-of-plane and in-plane directions of the load-bearing wall panel can be transmitted to the frame part, the steel frame structure without the complexity of construction associated with on-site construction of a horizontal force bearing member such as a brace material Low-rise buildings and load-bearing wall panels can be obtained.

FIG. 1 is a diagram showing the outer walls of the first and second floors of a low-rise building with a steel frame structure according to an embodiment of the present invention, and FIG. 2 is an explanatory view of the assembled state of the outer walls shown in FIG. FIG. 3 is an enlarged view of portion A in FIG. 2, FIG. 4 is an enlarged view of portion B in FIG. 2, and FIG. 5 is an enlarged view of portion C in FIG.
Hereinafter, the present embodiment will be described with reference to FIGS.

The low-rise building with a steel frame structure according to the present embodiment is mainly composed of a load-bearing wall in which a face member is attached to a frame member made of a thin lightweight steel (a member made of a steel plate having a thickness of less than 2.3 mm). As a frame element, a bearing wall panel 5 is installed between the roof beam 1 and the floor beam 3 on the second floor, and a bearing wall panel 9 is installed between the floor beam 3 and the foundation 7 on the second floor. Further, columns 11 and 13 are installed adjacent to the load-bearing wall panels 5 and 9.
The load-bearing wall panels 5 and 9 are configured by attaching a plywood face material 15 (see FIG. 1) to a frame material composed of vertical frame materials 5a and 9a and horizontal frame materials 5b and 9b. Then, the upper weft members 5b and 9b in the frame member are attached to the roof beam 1 and the floor beam 3 via the attachment portion 17, respectively.

As shown in FIG. 5, the mounting portion 17 has a bolt hole formed in a convex portion protruding upward formed by burring the weft members 5 b and 9 b constituting the load-bearing wall panels 5 and 9. is there. The load-bearing wall panels 5 and 9 are attached to the roof beam 1 and the floor beam 3 by bolts 19 inserted through the bolt holes of the attachment portion 17.
By joining the roof beam 1 and the floor beam 3 by the mounting portion 17 protruding upward in this way, a gap 18 is formed between the horizontal frame members 5 b and 9 b and the roof beam 1 and the floor beam 3.

By attaching the load-bearing wall panels 5 and 9 to the roof beam 1 and the floor beam 3 through the gap 18 by the mounting portions 17 formed on the web surfaces of the horizontal frame members 5b and 9b, the roof beam 1 and the floor beam 3 are perpendicular to each other. When force is applied, the web surfaces of the weft frame members 5b and 9b are easily deformed, so that the vertical force is not transmitted downwardly through the load-bearing wall panels 5 and 9.
On the other hand, the out-of-plane force due to the wind and the horizontal force in the in-plane direction during an earthquake or storm can be easily transmitted by the support pressure of the mounting portion 17 and can be resisted.

Thus, since the vertical force is not transmitted, it is not necessary to consider the roof load or the floor load in the design of the load bearing wall panels 5 and 9, so that the design can be simplified and standardized.
Further, in the design of the floor beam 3 and the column 13, since the roof load is not transmitted through the vertical frame member 5a of the load-bearing wall panel 5, the design can be simplified.

As shown in FIG. 2, the lower end of the load-bearing wall panel 5 on the second floor is formed by joining the lower frame material 5 b and the floor beam 3 with the bolts 21 and the load-bearing wall hardware 23. It is fixed to the floor beam 3.
Further, as shown in FIG. 2, the lower end portion of the load-bearing wall panel 9 on the first floor has a horizontal frame member 9b and a foundation 7 on the lower side of the load-bearing wall panel 9, and a post-installed anchor bolt 23, a hole down hardware 25 and a hole. It is fixed to the foundation 7 by joining with anchor bolts 27 for down hardware.

In the present embodiment configured as described above, the load-bearing wall panels 5 and 9 are installed in place of the brace structure constructed in the field, so that the gusset plate is welded to the column or beam for attaching the brace material. All problems such as welding of surrounding reinforcing materials are eliminated.
In the above-described embodiment, an example of the load-bearing wall panel is shown by attaching a face material to a frame material made of a thin, lightweight steel, but the load-bearing wall panel of the present invention is not limited to this. In addition, a frame made of a thin lightweight steel plate is attached to a frame plate made of a thin steel plate having a thickness of 1.6 mm or less, and the end portion thereof is fixed with a drill screw. Even such a load-bearing wall panel can solve the problems of the conventional brace material structure as described above.

In addition, since the roof beam 1 and the load-bearing wall panel 5 on the second floor are connected via the mounting portion 17, horizontal force is transmitted between the roof beam 1 and the load-bearing wall panel 5, but vertical force is not transmitted. Therefore, the roof load is not transmitted to the load-bearing wall panel 5. Therefore, it is not necessary to consider the roof load in the design of the load-bearing wall panel 5, and the design can be simplified and standardized.
Further, in the design of the floor beam 3 and the column 13, since the roof load is not transmitted through the vertical frame member 5a of the load-bearing wall panel 5, the design can be simplified.

  Further, since the floor beam 3 and the load-bearing wall panel 9 on the first floor are connected via the mounting portion 17 in the same manner as the load-bearing wall panel 5, the horizontal force is transmitted between the floor beam 3 and the load-bearing wall panel 9. However, the vertical force is not transmitted, and the floor load is not transmitted to the load-bearing wall panel 9. Therefore, it is not necessary to consider the floor load in the design of the load-bearing wall panel 9, so that the design can be simplified and standardized. Further, since the roof load is not transmitted to the load bearing wall panel 9 as described above, it is not necessary to consider the roof load in the design of the load bearing wall panel 9, and the design can be simplified in this respect as well.

  On the other hand, since the horizontal force in the in-plane and out-of-plane directions of the load-bearing wall panels 5 and 9 is transmitted, it is possible to resist shaking during an earthquake and wind blowing on the load-bearing wall panels 5 and 9.

It should be noted that the use of a steel plate having a thickness of about 1 mm as the weft frame material for burring is more preferable in terms of absorption of vertical force because deformation becomes easier.
If it is desired to transmit a vertical force to the vertical frame member of the load-bearing wall panel 9 on the first floor for the sake of design, a steel plate 31 having the same thickness as the height of the burring is used as shown in FIG. It is only necessary to install it between the 9 vertical frame members 9a and the floor beam 3, which is very convenient in design.

  In the above example, the example in which the mounting portion 17 that protrudes outward from the weft frame material is formed by burring processing is shown, but the present invention is not limited to this, and the weft frame material is the same as the burring processing portion. A mounting member 17 may be formed by installing another member having a size, and the gap 18 may be formed.

[Embodiment 2]
FIG. 7 is an explanatory view of the assembled state of the outer wall portions of the first floor and the second floor in the low-rise building of the steel frame structure according to the second embodiment of the present invention, and shows a state before joining the members, FIG. Is an enlarged view of a portion A in FIG. 7, and FIG. 9 is an enlarged view of a portion B in FIG. 7-9, the same code | symbol is attached | subjected to FIG. 2-4 and the same part.
Hereinafter, the present embodiment will be described with reference to FIGS.

In the second embodiment, the load-bearing wall panels 5 and 9 are attached via the attachment member 35.
As shown in FIGS. 8 and 9, the attachment member 35 is composed of a long member extending along the width direction of the load-bearing wall panels 5 and 9, and a main body portion 37 having a substantially Σ-shaped cross section perpendicular to the longitudinal direction. And end portions 39 formed at both ends of the main body portion 37 and having a substantially Σ-shaped cross section in the longitudinal direction.
The main body portion 37 includes a lower surface portion 37a, an upper surface portion 37b, and a side surface portion 37c. The lower surface portion 37a and the upper surface portion 37b are flat surfaces, and the side surface portion 37c has a bent portion that is bent inward in the middle. Yes.

The end portion 39 has a top surface portion 39a having a flat surface continuous with the top surface portion 37b of the main body portion 37, and a side surface portion 39c having a bent portion formed continuously from the top surface portion 39a and bent inwardly in the middle. And a lower surface 39b which is formed continuously with the side surface portion 39c and has a flat surface.
The attachment member 35 having the shape as described above is made of a thin steel plate having a thickness of about 1 mm, and the lower surface portion 37a of the main body portion 37 is connected to the horizontal frame members 5b, 9b of the load-bearing wall panels 5, 9 with bolts 19 (or The upper surface portion 37 b of the main body portion 37 is joined to the flange portion of the floor beam 3 or the roof beam 1 by the bolt 19.

When the load-bearing wall panels 5 and 9 are attached via the attachment member 35 configured as described above, when a vertical force acts on the roof beam 1 or the floor beam 3, the main body portion 37 and the end portion 39 are bent. The part elastically expands and contracts to absorb the vertical force.
On the other hand, when a horizontal force in the in-plane direction of the load-bearing wall panels 5 and 9 is applied, the horizontal force is transmitted to the floor beam 3 or the roof beam 1 mainly by the resistance of the side surface portion 37c of the main body portion 37. Further, when a horizontal force in the out-of-plane direction of the load-bearing wall panels 5 and 9 is applied, the horizontal force is transmitted to the floor beam 3 or the roof beam 1 mainly by the resistance of the side surface portion 39c of the end portion 39.
Thus, by attaching the load bearing wall panels 5 and 9 via the attachment member 35, the vertical force acting on the load bearing wall panels 5 and 9 can be absorbed, and the load bearing wall panels 5 and 9 act in the in-plane direction. The horizontal force from the roof beam 1 and the floor beam 3 can be transmitted to the load-bearing wall panels 5 and 9, and the horizontal force acting out of the plane of the load-bearing wall panels 5 and 9 can be transmitted to the frame.
As a result, the same effects as those of the first embodiment can be obtained.

In the above embodiment, the example in which the mounting member 35 is configured by one member including the main body portion 37 and the end portion 39 has been described. However, the mounting member 35 of the present invention is not necessarily configured by one member. The main body 37 and the end 39 may be separated.
However, as shown in the present embodiment, by constituting the attachment member 35 from a single member, it is easy to join the attachment member 35 to the beam, etc., and the load-bearing wall panel, resulting in excellent workability. It is done.

It is a figure which shows the outer wall part of the 1st floor and 2nd floor of the steel house of one embodiment of this invention. It is explanatory drawing of the assembly state of the outer wall part shown in FIG. 1, and is a figure which shows the state before joining of each member. It is an enlarged view of the A section in FIG. It is an enlarged view of the B section in FIG. It is an enlarged view of the C section in FIG. FIG. 10 is an explanatory diagram of another aspect in the first embodiment. It is explanatory drawing of the assembly state of the outer wall part of the 1st floor and 2nd floor of the steel house of Embodiment 2 of this invention, and is a figure which shows the state before joining of each member. It is an enlarged view of the A section in FIG. It is an enlarged view of the B section in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Roof beam, 3 floor beam, 5, 9 load-bearing wall panel, 11, 13 pillar, 17 attachment part, 35 attachment member.

Claims (5)

A low-rise building with a steel frame structure, in which a frame plate made of thin lightweight steel is attached to a frame part of a frame plate made of a thin steel plate or a load bearing wall panel made by attaching a face material to the frame material. Because
The upper surface of the cross member constituting the frame member of the load-bearing wall panel has a convex portion protruding upward formed by burring, and the convex portion is bolted to the frame portion to form an upper surface of the cross member. A low-rise building with a steel frame structure , wherein the load-bearing wall panel is attached to the frame part so that a gap is formed between the frame part and the frame part . A low-rise building with a steel frame structure, in which a frame plate made of thin lightweight steel is attached to a frame part of a frame plate made of a thin steel plate or a load bearing wall panel made by attaching a face material to the frame material. Because
The load-bearing wall panel is attached to the frame portion via an attachment member,
The attachment member is a long member extending along the width direction of the load-bearing wall panel, and includes a main body portion and end portions formed at both ends of the main body portion, and the main body portion includes a lower surface portion and an upper surface surface. The bottom surface and the top surface portion are flat, the side surface portion has a bent portion that is bent inward in the middle, and the end portion is continuous with the top surface portion of the main body portion. It is composed of a top surface portion formed of a flat surface, a side surface portion provided with a bent portion that is formed continuously on the top surface portion and bent inward in the middle, and a bottom surface formed continuously with the side surface portion and formed of a flat surface. low-rise building steel shaft assembly structure, characterized in that is. A load-bearing wall panel attached to a frame part of a low-rise building with a steel frame structure by attaching a strip made of a thin steel plate to a frame material made of a thin lightweight steel, or by attaching a face material to the frame material Because
A convex portion projecting upward formed by burring the upper surface of the cross member constituting the frame member of the load-bearing wall panel; the convex portion being bolted to the frame portion; and the upper surface of the cross member The load bearing wall panel is attached to the frame part so that a gap is formed between the frame part and the frame part . A load-bearing wall panel mounting member for installing a load-bearing wall panel on a frame part of a low-rise building with a steel frame structure,
The attachment member is a long member extending along the width direction of the load-bearing wall panel, and includes a main body portion and end portions formed at both ends of the main body portion, and the main body portion includes a lower surface portion and an upper surface surface. The bottom surface and the top surface portion are flat, the side surface portion has a bent portion that is bent inward in the middle, and the end portion is continuous with the top surface portion of the main body portion. It is composed of a top surface portion formed of a flat surface, a side surface portion provided with a bent portion that is formed continuously on the top surface portion and bent inward in the middle, and a bottom surface formed continuously with the side surface portion and formed of a flat surface. bearing wall panel mounting member, characterized in that is. Strength to attach a load-bearing wall panel, which is made by attaching a strip made of thin steel plate to a frame material made of thin lightweight steel, or by attaching a face material to the frame material to a frame part of a low-rise building with a steel frame structure A wall panel mounting method,
Provided on the upper surface of the cross member constituting the frame member of the load-bearing wall panel is an upward projecting convex portion formed by burring, and the convex portion is bolted to the frame portion to connect the upper surface of the cross member and the A mounting method for a load bearing wall panel, wherein the mounting is performed on the frame so that a gap is formed between the frame and the frame .

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