JP2012154047A - Reinforcement metal fitting and attachment structure of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement metal fitting capable of being easily produced and resisting earthquake without breaking a structure member and an attachment structure of the same.SOLUTION: A reinforcement metal fitting includes a channel-shape member 13 formed in an L-shape from a first piece portion 11 attached to a groundsill 2 and a second piece portion 12 attached to a column 3 and a connection member 14 for connecting between the leading ends of the first piece portion 11 and the second piece portion 12. The channel-shaped member 13 is provided with a web 131, two ribs 132 and 133 and a circle hole 13C at a corner portion formed from the first piece portion 11, the second piece portion 12 and the ribs 132 and 133. The first piece portion 11 and the second piece portion 12 each has two or more attachment holes provided in the longitudinal direction, through which bolts B can be fastened. The connection member 14 is provided with a web 141, two ribs 142 and 143 and two or more connection attachment holes provided at positions matching the attachment holes.

Description

  The present invention relates to a reinforcing hardware and its mounting structure.

A frame building is a structure in which structural members constituting a frame such as columns, beams, and foundations are connected to each other at right angles. Some of these frame buildings have seismic reinforcement of structural materials.
Conventionally, seismic reinforcement of framed buildings is generally a structure using braces and seismic hardware. Seismic hardware is a flat plate that is attached so as to cover the joint between the column and beam or foundation and the brace, and is used to suppress the separation and disengagement of the joint. Owes.

On the other hand, instead of providing braces, there is a reinforcement hardware that reinforces the seismic strength of the opening wall by attaching a triangular bracket to the corner (corner) where the column and beam or the column and foundation are connected at a right angle. Known (Patent Document 1).
The reinforcing hardware described in Patent Document 1 has a structure including an L-shaped fixing portion and a connecting portion that connects between the tip ends of the L-shaped fixing portion, and these members are corners of a base and a pillar. It is formed at a right angle so that it can be attached to the part. The reinforcing hardware is constituted by cutting a plate material in which the L-shaped fixed portion and the connecting portion are flattened from an iron plate, bending them, and further welding. In addition, one bolt hole and one nail hole smaller than the bolt hole used for positioning are formed at both ends of the L-shaped fixing portion and both ends of the connecting portion. The connecting portion is fixed to the base or the pillar using one bolt hole via the L-shaped fixing portion.

JP 2003-278295 A

In the conventional example shown in Patent Document 1, since the plate material is bent and formed at a right angle, it is difficult to accurately form the right angle of the right triangle of the L-shaped fixing portion. Moreover, since both ends of the connecting portion are welded and fixed to the distal end portion of the L-shaped fixing portion, the entire fitting has a rigid structure. For this reason, when a shaking such as an earthquake is applied to a building, it will reinforce the connection between the pillar and beam, or the pillar and foundation, but it may cause a heavy load on the pillar itself and cause damage to the pillar. is there. Further, since the connecting portion is fixed using one bolt hole for each end portion via the L-shaped fixing portion, it is insufficient to suppress the force of the pillar trying to come off the base. A nail hole is provided adjacent to the bolt hole, but this nail hole is only for positioning and is not sufficient for fixing the reinforcing metal fitting.
For this reason, sticking reinforcement hardware that allows some distortion against shaking such as earthquakes while reinforcing the connection part between structural members that make up the frame such as pillars and beams or pillars and foundations Is desired.

  An object of the present invention is to provide a reinforcing hardware that can be easily manufactured and can be quake-resistant without damaging the structural material, and a mounting structure thereof.

  The reinforcing hardware according to the present invention is a reinforcing hardware used in a framed building in which the first structural material and the second structural material, each of which constitutes a casing, are connected to each other at right angles to each other. A channel-shaped member formed in an L shape by a first piece part to be attached and a second piece part to be attached to the second structural member, a tip part of the first piece part, and a tip part of the second piece part A pair of connecting members that are connected to each other, wherein the channel-shaped member is a pair of webs that are raised from the webs at both side portions along the longitudinal direction of the webs and are opposed to each other. A circular hole is formed in a corner portion formed by the web and the pair of ribs at a connection portion between the first piece portion and the second piece portion, and the first piece The fixing means can be inserted through the part and the second piece part, respectively. A plurality of mounting holes having substantially the same diameter are formed along the longitudinal direction, and the connecting member rises with respect to the connecting web and both side portions along the longitudinal direction of the connecting web and is disposed opposite to each other. And a plurality of connection mounting holes having substantially the same diameter provided at positions corresponding to the mounting holes are formed in the connection web.

In the present invention having this configuration, the reinforcing hardware includes a channel-shaped member formed in an L shape and a connecting member that connects the tip portions of the channel-shaped member. When it is installed at the corner between the second structural member and the second structural member, a greater reinforcing effect can be obtained than when only the channel-shaped member is used.
Moreover, each of the first piece portion and the second piece portion includes a plurality of attachment holes having substantially the same diameter provided along the longitudinal direction, and the connecting material portion also has a plurality of substantially the same positions at the positions corresponding to these attachment holes. Since the mounting attachment holes of the same diameter are provided, when fixing the reinforcing hardware to the first structural material or the second structural material using fixing means (for example, bolts) inserted through the plurality of mounting holes, Each of the first structural material and the second structural material can be fixed at a plurality of positions. Therefore, reinforcement of the connection part between structural materials can be made more reliable and strong. Further, since the connecting member can be fixed at a plurality of positions, it is possible to prevent the connecting member from coming off due to the fixing means being displaced or slackened at a time even when an earthquake is applied.
In addition, a circular hole is formed at a corner portion formed by the web and the pair of ribs at a connection portion between the first piece portion and the second piece portion. When this reinforcement hardware is installed at the corners of the first structural material and the second structural material, and vibration due to an earthquake is applied to the reinforcement hardware together with these structural materials, stress concentrates on the connecting part, but this stress is The circular holes are transmitted radially in the radial direction or distributed along the circumferential direction, and concentration at a predetermined location is avoided. Therefore, while strengthening the connection between structural materials, it becomes sticky to allow some distortion against earthquake shaking, and prevent damage to the first structural material and the second structural material Can do.

  The mounting structure for reinforcing hardware according to the present invention is a mounting structure for mounting the reinforcing hardware to the first structural material and the second structural material, wherein the reinforcing hardware is the first structural material and the first structural material. A first reinforcement hardware and a second reinforcement hardware arranged across at least one of the two structural members, the mounting hole formed in the first reinforcement hardware and the second reinforcement hardware The mounting holes are arranged so as to be shifted to different sides with respect to at least one structural material center line of the sandwiched first structural material and second structural material.

  In the invention of this configuration, the first reinforcement member and the second reinforcement member arranged with at least one of the first structure member and the second structure member interposed therebetween, and the attachment holes of the respective reinforcement members are the structure members. Since they are arranged on different sides with respect to the center line, when these reinforcing hardware are attached to the structural material with fixing means such as bolts, even if the fixing means are long, the fixing means interfere with each other in the structural material. It does n’t fit. Therefore, even if a fixing means having a large length is used, a plurality of reinforcement hardware can be reliably attached to the structural material.

The front view which shows the principal part of the frame building where the reinforcement hardware concerning embodiment of this invention was attached. The top view which shows the principal part of the said frame building. The perspective view of a reinforcement hardware. The front view of a reinforcement hardware. The figure which fractured | ruptured a part of channel-shaped member. The perspective view of a connection member. (A), (B) The figure explaining the manufacturing method of a channel-shaped member. (A), (B) The figure explaining the manufacturing method of a channel-shaped member. (A), (B) The figure explaining the manufacturing method of a channel-shaped member. The expanded view of a connection member. The top view which shows the principal part of the frame building to which the reinforcement metal hardware concerning the modification of this invention was attached.

An embodiment of the present invention will be described with reference to the drawings. Here, in each embodiment, the same components are denoted by the same reference numerals, and description thereof is omitted or simplified.
FIG. 1 to FIG. 10 show reinforcing hardware according to an embodiment of the present invention.
FIG. 1 and FIG. 2 show the main part of a frame building to which the reinforcing hardware according to this embodiment is attached.
In FIG. 1, a base 2 made of a plurality of square members (only one is shown in FIG. 1) is provided on a foundation 1, and a plurality of bases (3 in FIG. 1) spaced apart from each other by a predetermined distance are provided on the base 2. This column 3 is provided, and a beam 4 is provided on these columns 3.
The base 2, the pillar 3 and the beam 4 are each a housing that is a main structural portion of the building structure. In the present embodiment, the base 2 and the beam 4 each constitute a first structural material, The pillar 3 constitutes the second structural material.
In the present embodiment, the base 2 and the pillar 3 are connected to each other at a right angle, and the reinforcing hardware 10 is attached to the right-angled corner portion.

The reinforcement metal fitting 10 attached to the right corner of the base 2 that is the first structural material and the pillar 3 that is the second structural material will be described.
As shown in FIGS. 1 and 2, the reinforcing hardware 10 has a long first piece 11 fixed to the base 2 and a long second piece 12 fixed to the pillar 3. A channel-shaped member 13 and a connecting member 14 for connecting the tip portions of the first piece portion 11 and the second piece portion 12 are provided. The channel-like member 13 and the connecting member 14 are formed by bending a cold-rolled steel plate (JIS 3141).

3 and 4 show the detailed structure of the reinforcing hardware 10. 5 shows the detailed structure of the channel-like member 13, and FIG. 6 shows the detailed structure of the connecting member 14.
As shown in FIGS. 3 to 5, the first piece portion 11 and the second piece portion 12 of the channel-shaped member 13 are perpendicular to each other along the folding line C <b> 1 extending in the longitudinal direction of the web 131. It has two ribs 132 and 133 which are bent so as to. Then, the first piece portion 11 and the second piece portion 12 are partitioned and bent in an L shape along a line N1 perpendicular to the folding line C1. Further, a welded portion T1 that is welded (melted) over the entire length of the web 131 is provided on the folding line C1. The strength of the folding line C1 of the steel sheet can be increased by welding (melting) the bending line C1 and providing the welded portion T1. The weld T1 may be formed continuously, but may be formed intermittently. And the welding part T1 is formed by the welding means for joining metal members, for example, arc welding.
The web 131 of the first piece 11 is fixed to the upper surface of the base 2 by inserting bolts B as fixing means through the mounting holes 13H. The front end portion of the web 131 of the first piece portion 11 is a fixed portion 134, and two attachment holes 13H1 are formed along the longitudinal direction. A bolt B as a fixing member is inserted into these mounting holes 13H1 together with a connecting mounting hole 14H of the connecting member 14 described later, and is fixed to the base 2. As the bolt B, a coach screw bolt or the like is used.
The ribs 132 and 133 of the first piece 11 are arranged so as to stand up with respect to the upper surface of the web 131 and the base 2. The center line WC along the longitudinal direction of the rib 132 coincides with the center line CC along the longitudinal direction of the base 2 in plan view (see FIGS. 2 and 3). In addition, in the adjacent reinforcement hardware 10, the direction in which the web 131 is provided is different across the center line CC of the base 2 (see FIG. 2).

The web 131 of the second piece 12 is fixed to the side surface of the column 3 by inserting bolts B through the mounting holes 13H. The distal end portion of the web 131 of the second piece portion 12 is a fixing portion 134, and two attachment holes 13H1 are formed along the longitudinal direction. A bolt B as a fixing member is inserted into the attachment hole 13H1 together with a connection attachment hole 14H of the connection member 14 described later, and is fixed to the column 3. In addition, although the internal diameter dimension of the two attachment holes 13H1 is the same, the difference in the dimension due to a manufacturing error is treated as the same.
The ribs 132 and 133 of the second piece 12 are arranged so as to stand up with respect to the side surfaces of the web 131 and the pillar 3. The center line WC along the longitudinal direction of the rib 132 coincides with the center line CC along the longitudinal direction of the column 3 in a side view (see FIG. 3).

A notch edge 13A is formed at one end of the ribs 132 and 133 of the first piece 11, and a notch edge 13A is formed at one end of the ribs 132 and 133 of the second piece 12 and formed on the same rib. The pair of cutout edge portions 13A face each other. These cut-out edge portions 13A may be in contact with each other, or may be in a state where there is a gap (FIGS. 3 and 4 show a state in which the cut-out edge portions 13A are in contact with each other).
As will be described later, the pair of cutout edge portions 13A constitutes a V-shaped cutout portion 13B (see FIG. 7) that starts from the folding line C1 and expands toward one long side. A circular hole 13C is formed continuously with the notch 13B at the intersection of the center line of the notch 13B, that is, the line indicating the intermediate position between the pair of notch edges 13A and the folding line C1. .
Reference numeral T2 is a welded portion that joins the cutout edge portions 13A. This weld T2 is one surface of the first piece 11 and is provided so as to avoid the hole 13C.

As shown in FIG. 6, the connecting member 14 includes two ribs 142 and 143 as two connecting ribs that are bent at right angles to each other and facing each other along a folding line C <b> 2 extending in the longitudinal direction of the web 141 as a connecting web. Have The ribs 142 and 143 are not provided at both end portions of the web 141, and the fixing portions are bent at both end portions of the web 141 in a direction close to the ribs 142 and 143 and in a direction close to each other. 144 is provided. The fixing portion 144 is provided with two connection mounting holes 14H in accordance with the positions of the mounting holes 13H1 provided in the fixing portion 134 described above. The connecting mounting hole 14H has the same inner diameter as the mounting hole 13H1.
Further, an arc-shaped hole 14 </ b> C is formed at a position where the edge portions of the ribs 142 and 143 intersect with the edge portion of the fixing portion 144.

The reinforcing hardware 10 is set in relation to the structural material to be reinforced. For example, in the case where the structural material is made of 105 mm × 105 mm square material, the length of the first piece portion 11 and the second piece portion 12 of the channel-shaped member 13 is 370 mm, and the width dimension of the web 131 (perpendicular to the longitudinal direction). The dimension of the ribs 132 and 133 is 30 mm, and the height of the ribs 132 and 133 (the dimension in the direction perpendicular to the longitudinal direction) is 30 mm.
The web 141 is preferably attached in parallel to a diagonal line connecting both ends of the channel-shaped member 13, and the length of the web 141 and the length of the fixing portion 144 are the same as those of the first piece 11 and the first portion of the channel-shaped member 13. It depends on the length of the two-piece portion 12. When the channel-shaped member 13 has the above dimensions, the length of the web 141 of the connecting member 14 is 407.3 mm, and the length of the fixing portion 144 is 82 mm. The width dimension (dimension in the direction orthogonal to the longitudinal direction) of the web 141 and the fixing portion 144 is 40.4 mm, and the height dimension (dimension in the direction orthogonal to the longitudinal direction) of the ribs 142 and 143 is 30 mm. At this time, the angle between the web 141 and the fixing portion 144 is 45 degrees. The two attachment holes 13H1 are, for example, 14 mm.

As shown in FIG. 1, the mounting structure of the reinforcing hardware 10 to the beam 4 and the pillar 3 is the same as that of the reinforcing hardware 10 to the base 2 and the pillar 3.
In other words, the reinforcing hardware 10 includes a channel-shaped member 13 having a first piece 11 fixed to the beam 4 and a second piece 12 fixed to the column 3. A connecting member 14 is provided between the tip portions of the two piece portions 12.
The 1st piece part 11 and the 2nd piece part 12 have the web 131 and the two ribs 132 and 133, respectively, and are formed in the L-shape.
The web 131 of the first piece 11 is fixed to the lower surface of the beam 4, and the ribs 132 and 133 of the first piece 11 are arranged so as to stand up with respect to the web 131 and the lower surface of the beam 4. The center line along the longitudinal direction of the rib 132 coincides with the center line along the longitudinal direction of the beam 4.
The ribs 132 and 133 of the second piece 12 are arranged so as to stand up with respect to the side surfaces of the web 131 and the pillar 3. The center line along the longitudinal direction of the rib 132 coincides with the center line along the longitudinal direction of the column 3.

Next, the manufacturing method of the reinforcement metal fitting 10 of this embodiment is demonstrated based on FIGS. First, the manufacturing method of the channel-shaped member 13 is demonstrated.
[Processing for strip-shaped flat plate]
After checking plate | board thickness, quantity, etc. for metal board | plate materials with a mill sheet | seat, this board | plate material is cut | disconnected to make a strip-shaped flat plate. The strip-shaped flat plate is inspected for dimensions. The cut strip-shaped flat plate 130 has a longitudinal dimension of 740 mm, a width dimension orthogonal to the longitudinal direction of 105 mm, and a thickness dimension of 4.3 mm. It is inspected with a gabari scale (measuring jig) whether it has a thickness dimension, a length dimension, etc. according to this setting.

[Drilling process]
Then, as shown in FIG. 7, a V-shaped notch 13B, a circular hole 13C, and mounting holes 13H and 13H1 are simultaneously formed on the inspected strip-shaped flat plate 130.
In this step, first, two folding lines C1 are set as virtual lines along the longitudinal direction at an intermediate position in the width direction orthogonal to the longitudinal direction of the strip-shaped flat plate 130. The imaginary line may be formed by engraving an actual line on the strip-shaped flat plate 130. The folding line C1 is a position corresponding to three equal parts of the dimension between the long sides facing each other. And the V-shaped notch 13B is formed in the strip-shaped flat plate 130 so as to expand toward one of the long sides facing each other starting from the folding line C1. The circular hole 13C is formed continuously with the base of the notch 13B at the intersection of the notch 13B and the folding line C1.
For example, the mounting holes 13H, 13H1 have a diameter (inner diameter) of 14 mm. The diameter of the circular hole 13C is 8.6 mm. Here, the circular hole 13 </ b> C is preferably a perfect circle, and its diameter is set on the basis of twice the thickness dimension of the strip-shaped flat plate 130. The V-shape of the notch 13B is set with an angle of 90 °, and the base edge thereof is located on the line of the folding line C1. The circle center of the circular hole 13C coincides with the base edge of the notch 13B.
Further, the mounting holes 13H1 are formed at positions of 17 mm and 55 mm from the longitudinal ends of the strip-shaped flat plate 130, respectively, and the space between the mounting holes 13H1 is 38 mm.
In the drilling process, a punching machine or other appropriate apparatus is used.

[Bender processing process]
After inspecting whether or not drilling has been performed at a predetermined position, a bender processing step is performed.
After confirming that the notch 13B, the circular hole 13C, and the mounting holes 13H and 13H1 are formed in the correct position, diameter, and size with a gabari scale (measuring instrument), the strip-shaped flat plate 130 is folded to be L-shaped. The channel-shaped member 13 is formed.
That is, as shown in FIG. 7, the strip-shaped flat plate 130 is bent into an L shape using a bender machine (not shown) or the like along one folding line C <b> 1 to form the rib 132, and then the rest The strip-shaped flat plate 130 is bent into an L shape along one folding line C1, and the rib 133 is formed along the longitudinal direction. Thereby, the channel-shaped member 13 having a U-shaped cross section in which the web 131 and the ribs 132 and 133 are formed along the longitudinal direction is formed (see FIG. 8).
Note that when the strip-shaped flat plate 130 is bent, stress concentrates on a portion including the folding line C1 and the line N1 orthogonal to the line, but the stress is dispersed by the circular hole 13C. That is, the stress is transmitted radially in the radial direction of the circular hole 13C or distributed along the circumferential direction, and concentration at a predetermined location is avoided.

[Temporary assembly welding process]
As shown in FIG. 9, after the channel-shaped member 13 is inspected with an angle ruler, a scale or the like, a line N1 perpendicular to the folding line C1 and passing through the center of the notch 13B and the hole 13C (see FIG. 5). ) To form the first piece 11 and the second piece 12 by bending the channel-shaped member 13 into an L shape. At this time, the respective cutout edge portions 13A constituting the cutout portion 13B are opposed to each other, and one surface of the opposed portion and the surface on which the web 131 is disposed are welded.
Further, the connecting portion between the web 131 of the first piece portion 11 and the web 131 of the second piece portion 12 extends over the entire length on the folding line C1 (that is, the proximity portion between the web 131 and the rib 132 and the web 131 and the rib 133). Weld the adjacent part). Thereby, the welding part T1 of a predetermined thickness dimension is formed.

Next, the manufacturing method of the connection member 14 is demonstrated.
[Processing for strip-shaped flat plate]
As shown in FIG. 10, the strip-shaped flat plate 140 that has been inspected, the rectangular notch portion 14 </ b> B that forms the edge portion 144 </ b> A of the ribs 142 and 143 and the edge portion 144 </ b> A of the fixing portion 144, the circular hole 14 </ b> C, and the connection The mounting hole 14H is formed at the same time. For this formation, a punching machine or other appropriate apparatus is used.

[Drilling process]
Then, two folding lines C2 are set on the strip-shaped flat plate 140 along the longitudinal direction as virtual lines. The folding line C2 is a position corresponding to three equal parts of the dimension between the long sides facing each other. Rectangular cutouts 14B having one side on the folding line C2 are formed at the four corners of the strip-shaped flat plate 140, respectively. A circular hole 14C is formed simultaneously with the formation of the notch 14B. The circular hole 14C is formed continuously with the base of the notch 14B at the intersection of the notch 14B and the folding line C2.
In addition, the connection mounting holes 14H are formed at positions of 17 mm and 55 mm from the longitudinal ends of the strip-shaped flat plate 140, respectively, and the space between the connection mounting holes 14H is 38 mm.

[Bender processing process]
After confirming that the notch 14B and the circular hole 14C are formed at the correct positions, the strip-shaped flat plate 140 is bent to form the web 141 and the ribs 142 and 143. That is, as shown in FIG. 10, the strip-shaped flat plate 140 is bent into an L shape using a bender machine (not shown) or the like along one folding line C2 to form the web 141 and the rib 142, and then the rest The strip-shaped flat plate 140 is bent into an L shape along one folding line C2 to form the web 141 and the rib 143 along the longitudinal direction. Furthermore, the edge part 144A of the web 141 formed by the notch part 14B is close to the edge part 14A of the ribs 142 and 143 along a virtual line N2 that connects the circular holes 14C facing in the short direction of the web 141. As described above, the web 141 is bent to form the fixing portion 144.
The connecting member 14 does not necessarily require a welding process, but is welded on the folding line C <b> 2 (that is, the vicinity of the web 141 and the rib 142 and the vicinity of the web 141 and the rib 143) over the entire length of the web 141. Also good.
In addition, the channel-shaped member 13 and the connecting member 14 are subjected to rust prevention treatment as necessary.

The channel-shaped member 13 and the connecting member 14 manufactured as described above are attached to the frame building.
First, the channel-like member 13 is disposed at the corner of the base 2 and the pillar 3 and at the corner of the beam 4 and the pillar 3, and is fixed with bolts B, screws, screws or the like in the mounting holes 13H. In installing the channel-shaped member 13, lines are drawn on the base 2, the column 3, and the beam 4 along the center line in the longitudinal direction, and the center line of the rib 132 of the channel-shaped member 13 is aligned with this line.
Next, the fixed portion 144 of the connecting member 14 is aligned with the fixed portion 134 of the fixed channel-shaped member 13, and bolts B, screws, and screws are inserted from the connecting mounting hole 14H into the mounting hole 13H1, and the connecting member 14, channel The member 13 is integrally fixed to the beam 4 and the column 3. Since there are a total of four connection mounting holes 14H and two mounting holes 13H1 at each end of the reinforcing hardware 10, the connection member 14 is connected with a total of four bolts B or the like via the channel-shaped member 13. It will be attached to a framed building.

When an earthquake occurs in the building where the reinforcing hardware 10 is installed, the beam 4 is inclined relative to the base 2 and the column 3, but the force applied to the base 2, the pillar 3, and the beam 4 is received by the reinforcing hardware 10. It will be. Since the reinforcing hardware 10 includes the connecting member 14 in addition to the channel-shaped member 13, the base 2, the column 3, and the beam 4 can be reinforced more firmly.
In the reinforcing hardware 10, stress concentrates on the bent portion of the channel-shaped member 13, but this stress is distributed and transmitted almost all around the circular hole 13 </ b> C, and stress concentration at a predetermined location is eliminated.
When the pillar 3 is inclined with respect to the base 2 due to an earthquake or the like and the first piece 11 and the second piece 12 are displaced, the first piece 11 and the second piece 12 are only attached to the mounting hole 13H. Instead, the pillars 3 are not detached from the base 2 because they are connected via the bolts B inserted through the two mounting holes 13H1.

Therefore, in the present embodiment, the following operational effects can be achieved.
(1) The reinforcing hardware 10 includes a channel-shaped member 13 formed in an L shape with a first piece 11 fixed to the base 2 or the beam 4 and a second piece 12 fixed to the column 3; A connecting member 14 for connecting the tip of the first piece 11 and the tip of the second piece 12, and the channel-like member 13 is connected to the web 131 at both ends of the web 131 and the web 131. A circular hole 13 </ b> C is provided at a corner portion formed by two ribs 132 and 133 that are arranged to rise and face each other, the first piece portion 11, the second piece portion 12, and the ribs 132 and 133. The first piece portion 11 and the second piece portion 12 are provided along the longitudinal direction, and are provided with two attachment holes 13H1 into which the bolts B can be inserted, and the connecting member 14 is formed on the web 141 and the web 141. Standing up against each other and facing each other It is the structure provided with two ribs 142 and 143 to be placed and a total of four connection mounting holes 14H provided at positions corresponding to the mounting holes 13H1.
In the present embodiment, the connection member 14 can be fixed to the base 2 or the beam 4 and the column 3 through the channel-shaped member 13 at four locations in total, by four connection attachment holes 14H. Therefore, when this reinforcing hardware 10 is installed at the corner of the base 2 or the beam 4 and the column 3, a greater reinforcing effect can be obtained as compared with the case of only the channel-shaped member 13. In addition, since the connecting member 14 can be fixed by inserting the bolts B into two portions of the first piece portion 11 and the second piece portion 12 of the channel-like member 13 and a total of four places, vibration caused by an earthquake is applied. However, it can be prevented that the four bolts B are disengaged or loosened at a time and the connecting member 14 is disengaged.

(2) The reinforcing hardware 10 is provided with a circular hole 13 </ b> C at a corner portion formed by the connecting portion between the first piece portion 11 and the second piece portion 12 and the ribs 132 and 133. When vibration due to an earthquake is applied to the reinforcing hardware 10 installed at the corners of the base 2 and the beams 4 and the pillars 3, stress concentrates on the bent portion of the channel member 13, and this stress concentration is circular. 13C, the joints between the structural members are strengthened and the sticking to allow some distortion against shaking such as earthquakes. 4 can be prevented from being damaged.
(3) One web 131 of the first piece 11 is attached to the base 2 or the beam 4, and the other ribs 132 and 133 of the first piece 11 are arranged upright with respect to the base 2 or the beam 4, One web 131 of the two piece part 12 is attached to the pillar 3, the other ribs 132 and 133 of the second piece part 12 are raised with respect to the pillar 3, and the first piece part 11 and the second piece part 12 are arranged. The center line WC along the longitudinal direction of the raised ribs 132 and 133 is made to coincide with the center line CC of the base 2 or the beam 4 or the center line of the beam 4. Therefore, a force is applied to the ribs 132 and 133 rising from the first piece 11 and the second piece 12 due to the earthquake, but this force is transmitted along the center line CC of the base 2, the beam 4 and the column 3. Therefore, seismic reinforcement is surely performed.

(4) When the strip-shaped flat plate 130 is bent into an L shape along the folding line C1, and further bent along a line perpendicular to the folding line, stress is applied to the part including the folding line and the line perpendicular to the line. However, this stress concentration is dispersed by the circular holes 13C, and it is possible to prevent wrinkles and cracks from occurring in the strip-shaped flat plate 130. Furthermore, in the present embodiment, the strip-shaped flat plate 130 can be accurately bent at a right angle, so that the reinforcing hardware can be easily manufactured.
(5) Since the channel-shaped member 13 is manufactured by bending the strip-shaped flat plate 130, the first piece portion 11 and the second piece portion 12 are configured as one body, and strength is not reduced due to poor bonding or the like. .

(6) Since the connecting member 14 is manufactured by bending the strip-shaped flat plate 140, the strength does not deteriorate due to poor bonding or the like.
(7) When each notch edge side part 13A which comprises the notch part 13B of the reinforcement | strengthening metal object 10 opposes in the state which left | separated predetermined dimension, when the welding part T2 which joins notch edge side parts 13A mutually by an earthquake peeled, it mutually In the case of a small earthquake where the notched edge portions 13A facing each other do not come into contact with each other, the first piece 11 and the second piece 12 are connected. It is possible to avoid the pillar 3 from being detached from the base 2 or the beam 4 by displacing to the base 2. Moreover, when the cutout edge portions 13A come into contact with each other due to a large earthquake, the relative displacement between the first piece portion 11 and the second piece portion 12 is restricted, and the earthquake resistance effect can be increased. .

(8) Since the welded portion T1 is provided along the folding line C1, the strength of the steel plate can be increased, and as a result, the reinforcing effect of the reinforcing hardware 10 can be increased. That is, in addition to the increased cross-sectional area due to the thickness of the welded portion T1, the metal structure is strengthened with rapid heating of the steel plate by welding, so that the strength of the reinforcing hardware 10 is increased. In particular, since the welded portion T1 is formed at the connecting portion between the rib and the web to which a force is applied, the reinforcing effect is further increased.
(9) Since the welded portion T2 is provided on one side of the ribs 132 and 133, the other surface of the ribs 132 and 133 is free from bulge due to welding, and the appearance is improved.
(10) Since the channel member 13 has a U-shaped cross section by the web 131 and the ribs 132 and 133, the reinforcing effect of the reinforcing hardware 10 can be increased.
(11) Since the connecting member 14 includes the ribs 142 and 143 and the web 141 and the ribs 142 and 143 are formed to have a U-shaped cross section, the reinforcing effect of the reinforcing hardware 10 can be further increased.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that modifications and improvements within the scope of achieving the objects and effects of the present invention are included in the contents of the present invention. Absent.
For example, in the above-described embodiment, the base 2 or the beam 4 is used as the first structural material constituting the housing, and the reinforcing hardware is used to reinforce in the vertical plane as the column 3 as the second structural material that also forms the housing. 10 has been described, the present invention may be a reinforcing hardware for reinforcing in a horizontal plane. That is, as shown in FIG. 11, the first structural material and the second structural material constituting the housing may be the base 2 connected orthogonally to each other in the horizontal plane, or orthogonal to each other in the horizontal plane. It is good also as the beam 4 connected in this way.
As shown in FIG. 11, a base 2 made of a plurality of square members is provided on the foundation 1. These foundations 2 are arranged orthogonally to each other, and the reinforcing hardware 10 of the present invention is installed at the corners of these foundations 2.
Further, two attachment holes 13H1 are formed in each of the first piece portion 11 and the second piece portion 12, and two connection attachment holes 14H are formed in accordance with the attachment holes 13H1. The above may be arranged in series.
And it is good also as a structure which does not provide welding part T1 without welding (melting) along the folding line C1.

  INDUSTRIAL APPLICABILITY The present invention can be used for a framed building in which structural members constituting a frame such as a column, a beam, and a base are connected to each other at right angles.

  DESCRIPTION OF SYMBOLS 1 ... Foundation, 2 ... Base (1st structural material), 3 ... Pillar (2nd structural material), 4 ... Beam, 10 ... Reinforcement hardware, 11 ... 1st piece part, 12 ... 2nd piece part, 13 ... Channel member, 13C ... Circular hole, 13H1 ... Mounting hole, 14 ... Connection member, 14H ... Connection mounting hole, 131 ... Web, 132, 133 ... Rib, 141 ... Connection web, 142, 143 ... Connection rib, CC ... center line (structure material center line), WC ... rib center line

Claims (2)

Reinforcement hardware used in a framed building in which the first structural material and the second structural material, each of which constitutes a housing, are connected to each other at right angles,
A channel-shaped member formed in an L shape with a first piece attached to the first structural member and a second piece attached to the second structural member; and a tip of the first piece A connecting member that connects between the tip of the second piece,
The channel-shaped member is
A web, and a pair of ribs that are raised with respect to the web at both side portions along the longitudinal direction of the web and arranged to face each other, the first piece portion and the second piece portion, A circular hole is formed in a corner formed by the web and the pair of ribs in the connection portion of
In the first piece part and the second piece part, a fixing means can be inserted, and a plurality of mounting holes having substantially the same diameter are formed along the longitudinal direction.
The connection member includes a connection web and a pair of connection ribs that are raised with respect to both side portions along the longitudinal direction of the connection web and arranged to face each other, and the connection web has the attachment hole. A plurality of connecting attachment holes having substantially the same diameter provided at positions corresponding to the above are formed. An attachment structure for attaching the reinforcing hardware described in claim 1 to the first structural material and the second structural material,
The reinforcement hardware includes a first reinforcement hardware and a second reinforcement hardware arranged with at least one of the first structural material and the second structural material interposed therebetween,
The mounting hole formed in the first reinforcing hardware and the mounting hole formed in the second reinforcing hardware are respectively at least one of the sandwiched first structural material and the second structural material. A mounting structure for reinforcing hardware, characterized in that the mounting structure is shifted to a different side with respect to the center line of the structural material.

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