JP2002201820A - Earthquake-resistant reinforcing fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earthquake-resistant reinforcing fitting for reinforcing a foundation, a sill thereabove, and columns for earthquake resistance at a corner joint of building structural members to prevent the collapse of a wooden building even at the application of strong vibrations due to earthquakes, typhoons, etc. SOLUTION: The fitting for reinforcing a corner joint of building structural members for earthquake resistance comprises a steel lower member 1-1 attached to the foundation X; a steel upper member 1-3 attached to both the sill Y and a column Z; and an adjusting member 1-2 located halfway between the lower member 1-1 and the upper member 1-3 to absorb displacement resulting from vibration between the foundation X, the sill Y and the column Z.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation, a base and a pillar on a corner joint of a building structural material so as not to collapse even when strong vibration is applied to a wooden building due to an earthquake, a typhoon or the like. The present invention relates to a seismic retrofitting bracket for reinforcing a space between buildings.

[0002]

2. Description of the Related Art Conventionally, a method of fixing between a foundation of a wooden building and a base thereon by using an anchor bolt, and fixing a corner joint between the base and the column by using an L-shaped bracket or the like. Is usually adopted. However, with the above-mentioned reinforcing method, when strong vibration is applied due to an earthquake, a typhoon, or the like, the building structural material is separated or damaged at a corner joint where the impact is concentrated, resulting in a displacement, and the restoration does not occur. As a result, the reinforcing effect is not sufficient, and the wooden building may be damaged.

For example, a reinforcing bracket 61 as shown in a perspective view in FIG. 6 is generally used. That is, the reinforcing bracket 6
1 is a plate made of high-strength steel bent at 90 ° into an L-shaped angle to form fixing pieces 61a and 61b having bolt holes formed therein. And fixing the other fixing piece 61b to the column 6y by fixing means 63 such as a bolt or a nail to reinforce the joint between the base material 6x and the column 6y.

[0004] In the reinforcing bracket 61 having the above structure, when a sudden vibration is applied to the joint of the building structural material, it is fixed in a state where there is no room for buffering. The problem is that the joint a-1 between the base square bar 6x and the fixing piece 61a or the joint b-1 between the column 6y and the fixing piece 61b is separated or damaged and cannot be restored with a displacement. And the reinforcing effect is not sufficient, and the wooden building may be destroyed or collapsed.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems found in the conventional reinforcing metal fittings. Even if a wooden building vibrates greatly due to an earthquake, a typhoon, or the like, the present invention has been made. An object of the present invention is to provide a seismic retrofitting bracket that improves seismic performance by absorbing a shift due to vertical or horizontal vibration and adding a restoring function so as not to collapse.

[0006]

According to the present invention, there is provided a seismic retrofitting bracket according to the present invention, comprising: a steel lower member attached to a foundation; a base and a column; A steel upper member to be mounted over the steel lower member and the steel upper member, and an adjustment member that is located between the steel lower member and the steel upper member and absorbs vibration displacement between the foundation, the base, and the columns. It is a seismic reinforcement bracket.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a seismic reinforcement fitting of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view showing an earthquake-resistant reinforcing bracket of the present invention,
FIG. 2 shows members constituting the seismic retrofitting bracket of the present invention,
(A) is a perspective view showing a steel lower member, (B) is a perspective view showing an adjusting member, (C) is a perspective view showing a steel upper member, and (D) is elastically fixed. It is a side view showing a tool,
FIG. 3 is a side sectional view showing the mounting state of the present invention viewed from the direction of arrow I in FIG. 1, and FIG. 4 is an arrow II in FIG.
FIG. 5 is a partially cutaway side view showing a mounting state of the present invention viewed from a direction, and FIG. 5 is a perspective view showing a state where the present invention is mounted between a foundation, a base and a pillar.

As shown in the drawings, the present invention relates to a metal fitting for seismic reinforcement of a corner joint of a building structural material, comprising a steel lower member 1-1 attached to a foundation X and a steel upper member attached to a base Y and a column Z. An adjusting member 1-2 that is located between the member 1-3 and the steel lower member 1-1 and the steel upper member 1-3 and absorbs a vibration shift between the foundation X, the base Y, and the column Z. And characterized in that:

Then, the upper edge portion 1 of the steel lower member 1-1 is formed.
12 and the lower edge 121 of the adjustment member 1-2, and the upper edge 112 of the adjustment member 1-2 and the lower edge 132 of the steel upper member 1-3 are slidable. , Characterized by being elastically fixed by a resilient fixing device 14 which is bolted via a spring 143, and characterized in that an elastic buffer 123 is attached to the inner wall of the adjusting member 1-2. It is assumed that.

According to the present invention, the adjustment member 1-2 interposed between the foundation X, the base Y, and the column Z absorbs the horizontal vibration deviation between the foundation X, the base Y, and the column Z.
3 by means of the resilient fixture 14 bolted through
The vertical vibration displacement between the base member Y and the column Z can be elastically absorbed, and if necessary, an elastic cushioning member 123 can be attached to the inner wall of the adjusting member 1-2 to provide a cushioning effect. This is preferable because vibration deviation is smoothly absorbed.

Therefore, even if a wooden building vibrates greatly due to an earthquake, a typhoon, or the like, and a vertical or horizontal displacement occurs at a corner joint of a building structural material, this can be absorbed and restored. Wooden buildings can be protected from damage.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 4, the present invention relates to a steel lower member 1-1 and a steel upper member 1-3, and a steel lower member 1-1 and a steel upper member 1-1. Adjusting member 1 interposed between
-2, and a resilient fixture 14 for resiliently fastening between the adjusting member 1-2 and the steel upper member 1-3.

That is, the steel lower member 1-1 is made of high-strength steel, and as shown in a perspective view of FIG. The lower member main body 11 is formed with a fixing hole 111 for fixing the corner portion of the concrete foundation X from the outside, and is fixed to the concrete foundation X. An upper edge portion 112 having a hanging piece 113 formed by being double-folded downward from one side is formed.

The steel upper member 1-3 is made of high-tensile steel. As shown in a perspective view of FIG. A base fixing portion 13-1 to be nailed and fixed to a base Y made of a square bar and a column fixing portion 13-2 to be nailed and fixed to a column Z made of a square bar are integrally formed. -2 are provided with fixing holes 131, respectively, and the upper member body 13
An inwardly bent lower edge portion 132 is formed at a lower end of the upper portion 12 of the adjustment member 1-2 described below.
3, a bolt hole 133 of the resilient fixture 14 which is resiliently fastened between the bolts 133 is formed.

The adjusting member 1-2 interposed between the steel lower member 1-1 and the steel upper member 1-3 is made of preferably high-strength steel having excellent rigidity. FIG.
As shown in the perspective view of FIG. 2B, the adjustment member main body 12 is formed to be symmetrical by being bent by 90 °, and an elastic cushioning member 124 such as a rubber packing is attached to the inner wall thereof. A fixing hole 125 can be provided in the member main body 12. An upper edge 123 is formed at the upper end of the adjustment member main body 12 so as to be bent outward, and a vertical gap is provided between the upper edge 123 and the lower edge 132 of the steel upper member 1-3. Are engaged. The upper edge 12
3 is provided with a bolt hole 126 of a resilient fixture 14 for resiliently fastening the lower edge 132 of the steel upper member 1-3.

At the lower end of the adjusting member 1-2, there is formed a lower edge portion 121 having a sliding groove 122 having a substantially U-shaped cross section having a rising piece. 122, the hanging piece 11 of the upper edge 112 of the steel lower member 1-1.
3 is slidably held so as not to deviate.

As shown in a side view of FIG. 2D, a resilient fixing member 14 for resiliently fastening the adjusting member 1-2 and the steel upper member 1-3 has a washer. 144, bolt 1
41, a spring 143 fitted to the bolt 141, and a nut 142 screwed to the bolt 141. After passing the bolt 141 through a bolt hole 126 formed in the upper edge 123 of the adjustment member 1-2 via a washer 144, a spring 143 is fitted to the bolt 141, and then the lower part of the bolt 141 is The nut 1 is passed through a bolt hole 133 formed in the lower edge 132 of the steel upper member 1-3.
42, the adjusting member 1-2 and the steel upper member 1-3.
The space can be elastically concluded.

In order to attach the above-mentioned seismic reinforcement fitting 1 of the present invention to a corner joint of a building structural material, first, as shown in a side view in FIGS. The lower member 1-1 is applied to the steel lower member 1-1 using a fixing tool 15 such as a bolt, and is passed through the fixing hole 111 to fix the lower steel member 1-1 to the concrete foundation X. The hanging piece 113 of the upper edge 112 is engaged with the sliding groove 122 of the lower edge 121 of the adjusting member 1-2, and the elastic cushioning material 124 lined with the adjusting member main body 12 is provided.
Abuts the concrete foundation X, and then washers 14
The bolt 141 of the resilient fixture 14 is passed through the bolt hole 126 of the upper edge 123 of the adjusting member 1-2 via the spring 4, and the spring 143 is fitted in the bolt hole 126.

On the other hand, as shown in perspective views in FIGS. 3, 4 and 5, columns Z are erected at the corners of the cross-joined bases Y, Y, and both the bases Y, Y and the columns Z The steel upper member 1-3 is applied from the outside of the base, and a fixing tool 15 such as a nail is driven into the fixing hole 131 to fix the base Y, Y to the column Z. At this time, the lower edge portion 132 of the steel upper member 1-3 is made to go under the upper edge portion 123 of the adjustment member 1-2 so that the lower edge portion 1
The lower end of the bolt 141 of the above-described elastic fixing tool 14 is projected from a bolt hole 133 formed in the base member 32, and the nut 142 is fastened to the lower end of the bolt 141 to thereby adjust the adjusting member 1-2 and the steel upper member 1-1. 3 can be elastically fastened.

According to the present invention, the displacement in the horizontal direction due to the vibration between the foundation X, the base Y and the column Z is absorbed by the adjusting member 1-2 interposed between the concrete base X and the base Y and the column Z made of the square bar. . That is, the hanging piece 113 of the upper edge portion 112 of the steel lower member 1-1 fixed to the foundation X, and the adjusting member 1-
2 and a sliding groove 122 formed in the lower edge portion 121, and the elastic cushioning member 124 attached to the inner wall of the adjusting member 1-2 works synergistically to form the base X and the base X. The horizontal direction between the base Y and the pillar Z (a direction, b direction,
The vibration shift in the direction c) is absorbed.

Further, according to the present invention, vertical displacement due to vibration between the foundation X, the base Y, and the column Z can be buffered and absorbed. That is, the lower edge 132 of the steel upper member 1-3 fixed to the base Y and the column Z, and the upper edge 12 of the adjustment member 1-2.
3 is resiliently fastened by a resilient fixing device 14 including a bolt 141 and a nut 142 with a spring 143 interposed therebetween, so that the vertical direction between the foundation X, the base Y, and the column Z (FIG. 5) In this case, the vibration deviation in the direction d) is absorbed and restored.

Therefore, even if a wooden building vibrates greatly due to an earthquake, a typhoon, or the like, and a vertical or horizontal displacement occurs at a corner joint of a building structural material, this can be absorbed and restored. This has a great effect of being able to prevent a wooden building from being damaged.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a seismic reinforcement fitting of the present invention.

FIG. 2 shows each member constituting a seismic reinforcement fitting of the present invention. (A) is a perspective view which shows a steel lower member. (B) is a perspective view showing an adjustment member. (C) is a perspective view which shows a steel upper member. (D) is a side view showing the elastic fixing device.

FIG. 3 is a side sectional view showing an attached state of the present invention as viewed from an arrow I direction in FIG. 1;

FIG. 4 is a partially cutaway side view showing an attached state of the present invention as viewed from an arrow II direction in FIG. 1;

FIG. 5 is a perspective view showing a state where the present invention is mounted between a foundation, a base, and a pillar.

FIG. 6 is a perspective view showing a conventional example.

[Description of Signs] 1 Seismic reinforcement metal fitting 1-1 Steel lower member 11 Lower member main body 111 Fixing hole 112 Upper edge 113 Dropping piece 1-2 Adjusting member 12 Adjusting member main body 121 Lower edge 122 Sliding groove 123 Upper edge Part 124 elastic cushioning material 125 fixing hole 126 bolt hole 1-3 steel upper member 13 upper member main body 13-1 base fixing part 13-2 pillar fixing part 131 fixing hole 132 lower edge part 133 bolt hole 14 resilient fixing tool 141 Bolt 142 Nut 143 Spring 144 Washer 15 Fixture X Concrete foundation Y Base Z Column

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E125 AA04 AA18 AA66 AB12 AC23 AE01 AG20 BA00 BB05 BB11 BB22 BB30 BB33 BB37 BC02 BC09 BD01 BE02 BF08 CA05 CA13 CA77 EA01 EA02 EB01 EB06 3J048 AA01 EA02 A01 EA02 A01 A38 BD01

Claims (3)

[Claims] 1. A metal fitting for seismically reinforcing a corner joint of a building structural material, a steel lower member attached to a foundation, a steel upper member attached to a base and a column, and the steel lower member and the steel upper member. And an adjusting member for absorbing vibration displacement between the foundation and the base and the columns. 2. A slidable member between the upper edge of the steel lower member and the lower edge of the adjusting member, and a spring between the upper edge of the adjusting member and the lower edge of the steel upper member. The seismic reinforcement metal fitting according to claim 1, wherein the metal fitting is elastically fixed by an elastic fixing tool that is bolted through the elastic member. 3. The seismic retrofitting according to claim 1, wherein an elastic cushioning member is attached to an inner wall of the adjusting member.