JP3125056U - Seismic structure and seismic reinforcement brackets for framed wall construction buildings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the seismic performance of a building by increasing the strength of the bearing wall of the building by a frame wall construction method.
SOLUTION: In an earthquake-resistant structure of a building 1 constructed by a frame wall construction method, two vertical frames 5 and 5 within two spans from a corner pillar 4 of a wall frame material standing on a floor 2 are combined. The upper and lower frame mounting reinforcement metal fittings 22 that hold the two vertical frames 5 and 5 and fix and support the upper and lower ends thereof to the lower frame 3 and the upper frame 6, and the two vertical frames 5 and 5. The rigidity of the corner portion of the building is increased by using an earthquake-resistant reinforcing bracket including an intermediate reinforcing bracket 21 including a holding portion that sandwiches an intermediate position in the height direction of 5.
[Selection] Figure 1

Description

  The present invention relates to a seismic structure and a seismic reinforcement bracket for a frame wall construction method, and more particularly to a seismic structure and a frame designed to increase the rigidity of the frame of the building by the frame wall construction method and increase the strength of the bearing wall of the building. The present invention relates to a seismic reinforcing metal fitting which is used for joining frames to improve seismic resistance.

  Conventionally, buildings by the frame wall construction method (two-by-four method) have a high rigidity in which wall materials such as structural plywood and floor materials are fixed to the frame material and the frame structure and the surface structure such as walls and floors are integrated. Because of its wall-type structure, it is recognized for its high performance as an efficient energy-saving house with excellent earthquake resistance, fire resistance by frame materials, and high thermal insulation effect by thermal insulation housed in the walls.

  The seismic performance of a framed wall construction building is ensured by the appropriate amount of bearing walls and the arrangement of well-balanced bearing walls. Various proposals have been made to further improve the seismic performance. For example, Patent Document 1 discloses an earthquake-resistant wooden building having improved earthquake resistance by attaching earthquake-resistant elements to the four corners of the building. The seismic element used in this building is composed of a reinforcing structure assembled using a vertical frame material and a face material, and is attached to the lower part of the four corners outside the conventional building.

JP2003-193561A.

  By the way, since the seismic element used for the earthquake-resistant wooden building disclosed in Patent Document 1 is constructed by further adding L-shaped members to the four corners of the conventional building as described above. When viewed from the outside, the seismic elements themselves appear to be attached to the four corners of the building, which is inferior in appearance as a building design. Moreover, the foundation part that supports the seismic element also needs to be provided by expanding a conventional building foundation, and it is necessary to add foundations and foundations, resulting in a considerable increase in construction cost as a whole. Therefore, the purpose of the present invention is to solve the problems of the conventional technology described above, and to improve the earthquake resistance at the bearing wall so that the appearance of the earthquake resistant structure is not apparent. An object of the present invention is to provide a seismic structure and a seismic reinforcement bracket for a framed wall construction method that can minimize the increase in construction cost.

  In order to achieve the above object, the present invention is an earthquake-resistant structure of a building constructed by a frame wall construction method, and includes two vertical frames within two spans from the corner pillar of the wall frame material standing on the floor. The rigidity of the corners of the building is increased.

  It is a seismic reinforcement bracket used for the earthquake-resistant structure of the building described above, and the two vertical frames within 2 spans from the corner pillar of the wall frame material standing on the floor of the building are combined, and the two sheets are combined Upper and lower frame mounting reinforcing metal fittings that hold the vertical frame and fix and support the upper and lower ends of the vertical frame to the lower frame and the upper frame, and a holding unit that holds an intermediate position in the height direction of the two vertical frames And an intermediate reinforcing metal fitting.

  The upper and lower frame mounting reinforcing metal fittings are preferably steel plate bent products in which a substantially frame-shaped vertical frame holding portion and an upper and lower frame mounting flange are integrally formed.

  It is preferable that the intermediate reinforcing metal fitting is a steel plate bent product having a substantially U-shaped vertical frame holding portion.

  According to the present invention, there is an effect that it is possible to improve the seismic performance of the load bearing wall of the wall frame assembly material at an inexpensive cost without requiring an additional structure in appearance.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following embodiments will be described with reference to the accompanying drawings as the best mode for carrying out the seismic structure and seismic reinforcement brackets of the frame wall construction method building of the present invention.

  FIG. 1 is a schematic perspective view schematically showing a seismic structure of a wall frame near a corner post 4 of a building 1. As shown in the figure, corner pillars 4 having a predetermined cross section are erected at corners on a lower frame 3 fixed on the floor 2 shown schematically, and two vertical frames 5 are aligned. A seismic frame 10 is erected from the corner post 4 for two spans (in this embodiment, one span is 455 mm). The seismic frame 10 has its upper and lower ends fixed to the lower frame 3 and the upper frame 6 via a seismic reinforcement bracket 20 which will be described later, and the two vertical frames 5 are nailed at a plurality of locations and fixed to the surface. Thus, the shear resistance is ensured, and the two vertical frames 5 and 5 are integrated by the intermediate reinforcing metal fitting 21.

  2 is a plan view and a framework diagram of a building schematically showing an example of an earthquake-resistant structure of the framework wall construction method building 1. FIG. FIG. 2A shows a pillar arrangement in which a seismic frame 10 (indicated by ■ in the figure) is erected on the outer shape of the building 1 (lower frame 3). As shown in the figure, each seismic frame 10 is arranged in two spans from each corner post 4 in principle.

  FIG. 3 shows the structure of the seismic frame 10 when the opening 8 is located within 2 spans as shown by circles in FIG. As shown in FIG. 3, the seismic frame 10 on the side of the opening 8 is arranged in only one span. In this opening 8, as shown in FIGS. 2 (b) and 3, a known mass receiver 9 as a normal opening structure is nailed to the vertical frame 5. The cross-sectional area is secured.

Here, the seismic reinforcement bracket 20 attached to the seismic frame 10 and its attached state will be described with reference to FIGS.
The seismic reinforcement bracket 20 is composed of two types, an intermediate reinforcement bracket 21 shown in FIG. 4 (a) and an upper and lower frame mounting reinforcement bracket 22 shown in FIG. 4 (b). It consists of a steel plate member that is bent so as to form a substantially U-shape. In this embodiment, a hot-dip galvanized steel plate of the material JIS G 3302 is used, and the vertical frames 5 to be used are aligned in two. It is bent to a size that can be fitted. That is, when the dimension type of the vertical frame 5 is 204, the internal dimension is set to 80 mm. On the side surface, two screw fixing holes 23 for integrating the reinforcing metal fitting 21 and the vertical frame 5 are formed at diagonal positions on the left and right side surfaces, respectively. The upper and lower frame mounting reinforcing bracket 22 has a shape in which a mounting flange 24 is integrally formed on the side surface of the intermediate reinforcing bracket 21. The mounting flange 24 is obtained by bending the side surface portion of the main body. When mounting to the upper frame 6, the direction of the same member may be reversed.

  FIG. 5 is a perspective view schematically showing how the intermediate reinforcing member 21 and the upper and lower frame attaching reinforcing member 22 are attached to the vertical frame 5 and the lower frame 3. It is preferable to fix the metal fittings firmly to the frame body by using countersunk screws 25 and 26 for fixing both the reinforcing metal fittings 21 and 22 to the vertical frame 5 and the lower frame 3 rather than conventional nailing. Further, by setting the screw length of the countersunk screw 25 used for the vertical frame 5 to about 55 mm, the two vertical frames 5 can be more integrated as the earthquake resistant vertical frame 10 by screwing.

The perspective view which showed one Example of the earthquake-resistant reinforcement metal fitting used for the earthquake-resistant structure of the frame wall construction method building of this invention, and an earthquake-proof vertical frame. The top view and framework figure which showed one Example of the earthquake-resistant structure of the frame wall construction method building of this invention. The perspective view which showed the other Example of the earthquake-proof reinforcement metal fitting used for the earthquake-proof structure and earthquake-proof vertical frame which were shown in FIG. BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which showed one Example of the earthquake-proof reinforcement metal fitting of this invention. The state explanatory perspective view which showed an example of the attachment state of the seismic reinforcement metal fitting of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 3 Lower frame 4 Corner pillar 5 Vertical frame 8 Opening part 10 Earthquake-resistant vertical frame 20 Seismic reinforcement bracket 21 Intermediate reinforcement bracket 22 Vertical frame attachment reinforcement bracket 24 Mounting flange

Claims (4)

  A seismic structure of a building constructed by a frame wall construction method, and two vertical frames within two spans from the corner pillar of a wall frame material standing on the floor are combined, and the corner of the building is Seismic structure for framed wall construction, characterized by increased rigidity.   The two vertical frames within 2 spans from the corner pillar of the wall frame material standing on the floor of the building constructed by the frame wall construction method are combined, and the vertical frame of the two frames is sandwiched, An upper and lower frame mounting reinforcing metal fitting that fixes and supports the upper and lower ends to the lower frame and the upper frame, and an intermediate reinforcing metal fitting that includes a holding portion that holds an intermediate position in the height direction of the two-piece vertical frame. Seismic reinforcement metal fittings for framed wall construction buildings.   3. The frame wall construction method according to claim 2, wherein the upper and lower frame mounting reinforcing metal fittings are steel plate bent products in which a substantially U-shaped vertical frame holding portion and an upper and lower frame mounting flange are integrally formed. Seismic reinforcement metal fittings.   The said intermediate reinforcement metal fitting is a steel plate bending product which consists of a substantially U-shaped vertical frame holding | maintenance part, The earthquake-resistant reinforcement metal fitting of the frame wall construction method building of Claim 2 characterized by the above-mentioned.

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