JP2023137449A - Framework reinforcement structure - Google Patents

Abstract

To improve toughness of a framework structure so that various wooden buildings including traditional wooden buildings can maintain sufficient earthquake resistance and enable aseismatic repair to be securely and easily executed even if error occurs in positions of adjacent frameworks.SOLUTION: A connection part 4 for connecting both ends of an existing column material 2 and a reinforcement frame bar 3 that are adjacent to each other has a main body fitting 40, a rod-like first coupling member 41, and a rod-like second coupling member 42. The main body fitting 40 has an error absorption part to absorb error at positions in horizontal direction between the existing column material 2 and the reinforcement frame bar 3 that are adjacent to each other. A moment resistance joint, which resists an external force when the column material 2 is subjected to the external force, is applied to a junction of the first coupling member 41 to the column material 2. A moment resistance joint, which resists an external force when the reinforcement frame bar 3 is subjected to the external force, is applied to a junction of the second coupling member 42 to the reinforcement frame bar 3.SELECTED DRAWING: Figure 3

Description

There is an application for exception to loss of novelty.

The present invention relates to a frame reinforcement structure.

In wooden buildings, load-bearing walls are installed to meet the required wall volume in order to resist horizontal loads during earthquakes and typhoons.
Such load-bearing walls are constructed by spanning the openings between adjacent pillars with braces, or by pasting structural plywood so as to cover the entire openings between adjacent pillars ( For example, see Patent Document 1).

JP2009-293367A

By the way, when performing seismic retrofitting of the frame structures of traditional wooden buildings, such as temples and shrines, large-scale demolition and restoration work was essential. For this reason, the renovations that have been carried out to date have tended to be costly, making it difficult to carry out renovations at regular temples.
Therefore, in recent years, there has been a demand for the use of the load-bearing wall structure as described in Patent Document 1 in the frame structures of various wooden buildings including the traditional wooden buildings mentioned above. However, even if conventionally known normal load-bearing wall structures are applied, the load-bearing and rigidity of various wooden buildings, including the traditional wooden buildings mentioned above, and the weight of their roofs are taken into consideration. is insufficient. Furthermore, even if techniques related to conventionally known adhesive panels are adopted, the toughness, which is a property for exhibiting tenacity, may not be sufficient, making it difficult to maintain earthquake resistance.

In addition, in the case of frame structures in wooden buildings that require seismic retrofitting, for example, due to aging or having been subjected to large external forces in the past, the spacing between adjacent frames may become wider or narrower. , there may be errors in the positions of adjacent frame assemblies. In such cases, it is difficult to perform seismic retrofitting of the framework structure.

The present invention was made in view of the above circumstances, and its object is to improve the toughness of frame structures so that various wooden buildings including traditional wooden buildings can maintain sufficient earthquake resistance, and further To enable seismic retrofitting to be carried out reliably and easily even if there is an error in the positions of adjacent frame assemblies.

The invention according to claim 1 provides a structure for reinforcing an existing frame structure 1 that includes at least existing pillar members 2 that are adjacent to each other at intervals, as shown in FIGS. 1 to 7, for example. There it is,
a reinforcing frame material 3 disposed between the adjacent existing pillar materials 2;
A connecting portion 4 connecting the adjacent existing pillar materials 2 and both ends of the reinforcing frame material 3 is provided,
The connecting portion 4 is
a main body hardware 40 provided between the adjacent existing pillar materials 2 and both ends of the reinforcing frame material 3;
a rod-shaped first connecting member 41 that connects the pillar material 2 and the main body hardware 40;
It has a rod-shaped second connecting member 42 that connects the reinforcing frame material 3 and the main body hardware 40,
The main body hardware 40 includes an error absorption part that absorbs a horizontal positional error between the adjacent existing pillar material 2 and the reinforcing frame material 3,
A moment resistance joint is applied to the joint portion of the first connecting member 41 to the pillar material 2, which resists the external force when the pillar material 2 receives an external force,
The joint portion of the second connecting member 42 to the reinforcing frame material 3 is characterized in that a moment resistance joint is applied to resist the external force when the reinforcing frame material 3 receives an external force.

According to the invention set forth in claim 1, moment resistance bonding is applied to the joint portion of the first connecting member 41 to the pillar material 2, which resists the external force when the pillar material 2 receives an external force. Therefore, in the existing frame structure 1, the vicinity of the joint of the first connecting member 41 to the pillar member 2 is in a state of high toughness. Thereby, the toughness of the existing frame structure 1 can be improved, so that sufficient earthquake resistance can be maintained in various wooden buildings including traditional wooden buildings.
Further, in the connecting portion 4, the main body hardware 40 provided between the adjacent existing pillar materials 2 and both ends of the reinforcing frame material 3 is connected between the adjacent existing pillar materials 2 and the reinforcing frame material 3. Since it has an error absorbing part that absorbs errors in the horizontal position of the pillars, for example, due to aging or having been subjected to large external forces in the past, the distance between adjacent pillars 2 may widen or narrow. Even if there is an error in the position of adjacent existing pillars 2, such as when there is a gap, the error can be absorbed by the error absorbing section, and the earthquake resistance of the existing frame structure 1 can be reliably and easily repaired. be able to.

The invention according to claim 2 is, for example, as shown in FIGS. 1 to 6, in the frame reinforcement structure according to claim 1,
The main hardware 40 is
a first hardware 410 provided on the pillar material 2 side between the adjacent existing pillar materials 2 and both ends of the reinforcing frame material 3;
a second hardware 420 provided on the reinforcing frame material 3 side between the adjacent existing pillar materials 2 and both ends of the reinforcing frame material 3;
A bolt material 430 connecting the first metal fitting 410 and the second metal fitting 420,
The first metal fitting 430 has a first through hole 412a that is formed to penetrate in the thickness direction of a portion of the first metal fitting 410 that is connected to the second metal fitting 420, and through which the bolt material 430 is passed.
The second metal fitting 420 has a second through hole 422a that is formed to penetrate in the thickness direction of a portion of the second metal fitting 420 that is connected to the first metal fitting 410, and through which the bolt material 430 is passed.
At least one of the first through hole 412a and the second through hole 422a is a long hole that is longer in the horizontal direction than in the vertical direction, and the long hole is the error absorbing portion. .

According to the invention set forth in claim 2, the first through hole 412a is formed to penetrate in the thickness direction of a portion of the first hardware 410 that is connected to the second hardware 420, and the first through hole 412a of the second hardware 420 is formed through the first through hole 412a. At least one of the second through holes 422a formed through the thickness direction of the portion connected to the second through hole 422a is a long hole that is longer in the horizontal direction than in the vertical direction. 412a and the second through hole 422a to connect the first hardware 410 and the second hardware 420, the horizontal position of the first hardware 410 and the second hardware 420 is determined by the length of the elongated hole. It can be adjusted within the range of , and functions reliably as an error absorber. As a result, even if there is an error in the position of adjacent existing pillars 2, for example, the error absorption section can absorb the error, making it possible to reliably and easily perform seismic retrofitting of the existing frame structure 1. It can be carried out.

The invention according to claim 3 is, for example, as shown in FIG. 7, in the frame reinforcement structure according to claim 1,
The error absorbing section is provided between the adjacent existing pillar materials 2 and the main body hardware 40, and/or between both ends of the reinforcing frame material 3 and the main body hardware 40 to adjust the gap. It is characterized by being an adjustment material 440.

According to the invention described in claim 3, the error absorbing portion is provided between the adjacent existing pillar material 2 and the main body hardware 40 or/and between both ends of the reinforcing frame material 3 and the main body hardware 40. Since the adjusting material 440 is used to adjust the gap, for example, due to aging or being subjected to large external forces in the past, the distance between adjacent pillars 2 may increase, and the position of the existing adjacent pillars 2 may change. Even if an error occurs, the error can be absorbed by the adjusting member 440, and the earthquake resistance of the existing frame structure 1 can be reliably and easily performed.

The invention according to claim 4 is, for example, as shown in FIGS. 1 to 7, in the frame reinforcement structure according to any one of claims 1 to 3,
The yield point of the first connecting member 41 is set lower than the yield point of the second connecting member 42.

According to the invention described in claim 4, the yield point of the first connecting member 41 is set lower than the yield point of the second connecting member 42, so that the first connecting member 41 is lower than the yield point of the second connecting member 42. It is easier to plasticize than. Therefore, when a large external force is applied to the frame structure 1 due to, for example, an earthquake, the first connecting member 41 becomes plastic before the second connecting member 42. However, since the first connecting member 41 is moment-resistance joined to the adjacent first frame member 2, it exhibits toughness and holds up tenaciously even after being deformed. Deformation and damage of the members are less likely to occur. Moreover, even if a large external force is applied to the frame structure 1 due to an earthquake or the like, if the damaged part can be limited to the first connecting member 41, the repair of the frame structure 1 can be performed only on the first connecting member 41. Since all that is required is replacement, even if damage occurs, it can be easily and inexpensively repaired.

The invention according to claim 5 is, for example, as shown in FIGS. 1 to 7, in the frame reinforcement structure according to any one of claims 1 to 4,
The second connecting member 42 connects the upper end side and the lower end side at both ends of the reinforcing frame material 3 and the main body hardware 40,
The first connecting member 41 is provided along an extension line of the second connecting member 42.

According to the invention set forth in claim 5, since the first connecting member 41 is provided along the extension line of the second connecting member 42, the first connecting member 41 also has the following characteristics: Adjacent existing pillar members 2 can be reliably joined to the main body hardware 40 with moment resistance, and the deformation performance of the frame structure 1 can be improved.

According to the present invention, the toughness of the frame structure is improved, and various wooden buildings including traditional wooden buildings can maintain sufficient earthquake resistance, and furthermore, there is no error in the position of adjacent frame structures. seismic retrofitting can be carried out reliably and easily.

It is a figure showing a framework reinforcement structure. FIG. 3 is an enlarged plan cross-sectional view showing the main parts of the frame reinforcement structure. 3 is a sectional view taken along line AA in FIG. 2. FIG. It is a perspective view explaining the composition of the first hardware. It is a perspective view explaining the structure of the second hardware. It is a perspective view which shows the state in which a panel material is provided. FIG. 7 is an enlarged plan cross-sectional view showing a modification of the main part of the frame reinforcement structure.

Embodiments of the present invention will be described below with reference to the drawings. However, although the embodiments described below have various limitations that are technically preferable for implementing the present invention, the technical scope of the present invention is not limited to the embodiments and illustrated examples below. do not have. Note that the directions in the following embodiments and illustrated examples are set for convenience of explanation only.

In FIG. 1, reference numeral 1 indicates an existing reinforced frame structure. This framework structure 1 is mainly considered to constitute a traditional wooden building typified by the architecture of temples and shrines, but it is not limited to this. For example, it may be a framework structure that constitutes a relatively large wooden building such as a medium-rise or high-rise wooden building or a wooden building with a large total area, or a frame structure that constitutes a relatively large wooden building such as a detached house. It may also be a frame structure that constitutes a wooden building.
Furthermore, although this frame structure 1 is mainly intended for renovation of wooden buildings, it is not limited to this and may be applied to newly constructed buildings.
When frame structure 1 constitutes a traditional wooden building, such as a temple or shrine, such wooden buildings often have heavy roofs, and in the event of a major earthquake, the roof may crush the main hall. This increases the possibility of collapse due to layer collapse. Therefore, the existing framework structure 1 needs to be retrofitted for earthquake resistance.

The frame structure 1 in this embodiment is erected on lower structural members such as foundations, beams, bases, floors, etc., and has upper structures such as beams, floors, upper floor walls (including load-bearing walls), etc. The material is loaded. That is, the frame structure 1 is provided in a state sandwiched between the lower structural member and the upper structural member.
Such a frame structure 1 includes existing pillar materials 2, reinforcing frame materials 3, connecting portions 4, upper and lower frame materials 5, splints 6, and panel materials that are adjacent to each other at intervals. 7.

First, the existing pillar material 2 will be explained.
When the existing pillars 2 constitute a traditional wooden building, such as temples and shrines, the frame structure 1 is called a foothold that connects the lower ends of the adjacent existing pillars 2. A lower horizontal member, an upper horizontal member called a headpiece that connects the upper ends of adjacent existing pillar members 2, and an applied force located above the adjacent existing pillar members 2 and frame structure 1. It may also include a support member called a tofu provided between the beam (superstructure member) called a girder. In that case, the existing pillar material 2 may be erected on the pile of stones.

The existing pillar material 2 is made of structural laminated timber that is longer in the vertical direction than in the horizontal direction (lateral direction/left/right direction) and has a square shape when viewed in plan section.
In this embodiment, structural laminated timber is used as the pillar material 2, but it may be a normal square lumber (sawn lumber) or, for example, a pillar material made of LVL (Laminated Veneer Lumber). That is, the first frame material 2 is a wooden columnar member. Furthermore, the cross-sectional shape may not be square, but may be rectangular or circular (a perfect circle, an ellipse).

The existing pillar materials 2 have a plurality of connection insertion holes 2a through which first and second connection materials are passed for providing a plurality of reinforcing frame materials 3 between these existing pillar materials 2, and upper and lower holes. A plurality of connection insertion holes 2b are formed, through which bolts for installing the frame material 5 are passed.
The connection insertion holes 2a and 2b are inserted into the existing pillar material 2 in the left-right direction (horizontal direction) with respect to the position where the plurality of reinforcing frame materials 3 and the upper and lower frame materials 5 are provided in the existing pillar material 2. It is formed through.

Furthermore, the existing pillar material 2 may be joined to the lower structural member and the upper structural member by a bar material such as a steel bar, a bolt, or a long bolt. That is, an insertion hole 2c into which one end of the bar is inserted is formed in the upper and lower end surfaces of the existing pillar material 2, and an insertion hole into which the other end of the bar is inserted is also formed in the lower and upper structural members. will be formed.
As the bar material, a long bar material with an uneven surface, such as a deformed steel bar or a fully threaded bolt, is preferably used.
In addition, a method called glued in rod (GIR) is used to join the pillar material 2 and the lower structural material and the upper structural material using rod materials. In this method, the gap between the bar and the insertion hole 2c on the column 2 side, and the gap between the bar and the insertion hole on the lower and upper structure members are filled with adhesive, and the adhesive is cured. In this method, stress is transmitted through the adhesion force of the adhesive and the bar material to generate bonding strength. That is, there is a gap between the bar and each insertion hole 2c, and if the adhesive is not filled, the bar will not be joined to the column 2 side or to the lower and upper structure members. .
In addition, in this embodiment, the above-mentioned glue-in rod method was adopted to join the existing column material 2 made of bar material to the lower structure material and the upper structure material. , other methods may also be adopted.

A plurality of connection insertion holes 2a into which first connection members 41 (described later) in the connection portion 4 are inserted are formed in the existing pillar material 2 so as to penetrate in the left-right direction.
To explain in more detail, the plurality of connection insertion holes 2a extend from mutually opposing side surfaces (hereinafter referred to as inner surfaces 2d) of adjacent existing pillar materials 2 to adjacent existing columns on the opposite side to the inner surface 2d. They are formed so as to penetrate through side surfaces (hereinafter referred to as outer surfaces 2e) that are parallel to each other and do not face each other in the pillar material 2. Further, these plurality of connection insertion holes 2a are formed corresponding to the positions of the upper end side and the lower end side of the main body hardware 40 (described later) in the connection part 4, and are formed in the thickness direction of the frame structure 1. A plurality (two in this embodiment) are formed side by side.

Furthermore, a plurality of recesses 2f are formed on the outer surface 2e of the existing pillar material 2, into which rectangular washers 41c (described later) provided as a set with the first connecting member 41 in the connecting portion 4 are fitted. .

Next, the reinforcing frame material 3 will be explained.
The reinforcing frame material 3 is a structural laminated timber that is longer in the horizontal direction (lateral direction and left-right direction) than in the vertical direction, and is arranged between the adjacent existing pillar materials 2. Note that it is formed in a vertically elongated rectangular shape in a longitudinal cross-sectional view.
In this embodiment, structural laminated timber is used as the reinforcing frame material 3, but ordinary square timber (sawn timber) may also be used, or columns made of LVL (Laminated Veneer Lumber) or CLT (Cross Laminated Timber), for example. It can also be made of wood. That is, the reinforcing frame material 3 is a wooden horizontal member. Furthermore, the cross-sectional shape does not have to be a vertically elongated rectangle.
Further, a plurality of reinforcing frame members 3 are provided for the frame structure 1, and these plural reinforcing frame members 3 are arranged at intervals in the length direction of the adjacent column members 2. That is, the frame structure 1 in this embodiment is formed into a substantially cross-shaped (or ladder-like) shape by adjacent pillar members 2 and a plurality of reinforcing frame members 3.
Although the number of reinforcing frame members 3 is three in this embodiment, it is not limited to this and can be changed as appropriate without departing from the spirit of the present invention.

At both ends of the reinforcing frame material 3, a plurality of connection insertion holes 3a into which second connection members 42 (described later) in the connection portion 4 are inserted are formed in the left-right direction.
To explain in more detail, the plurality of connection insertion holes 3a are formed in a state in which they do not penetrate from both longitudinal end surfaces of the reinforcing frame material 3 toward the center. Further, a plurality of these connecting insertion holes 3a are formed on the upper end side and the lower end side of both lengthwise end surfaces of the reinforcing frame material 3. A plurality of connection insertion holes 3a on the upper end side and the lower end side are formed in plurality (two in this embodiment) in the thickness direction of the frame structure 1.

Next, the connecting portion 4 will be explained.
The connecting part 4 is a metal connecting means that connects the adjacent existing pillar members 2 and both ends of the reinforcing frame member 3, and as shown in FIGS. 2 to 5, it includes a split main body hardware 40, It has a rod-shaped first connecting member 41 and a rod-shaped second connecting member 42.

The main hardware 40 is provided between the adjacent existing pillar members 2 and both ends of the reinforcing frame member 3, and is of a split type as described above, and includes a first hardware 410 and a second hardware 420. and a bolt material 430 that connects these first metal fittings 410 and second metal fittings 420. In other words, the main hardware 40 is divided into a first hardware 410 side and a second hardware 420 side, which are connected by bolts 430 for use.
Moreover, such a main body hardware 40 further includes an error absorbing part (described later) that absorbs a horizontal positional error between the adjacent existing pillar material 2 and reinforcing frame material 3.

The first hardware 410 is a hardware provided on the pillar material 2 side between the adjacent existing pillar materials 2 and both ends of the reinforcing frame material 3.
The second hardware 420 is a hardware provided on the reinforcing frame material 3 side between the adjacent existing pillar materials 2 and both ends of the reinforcing frame material 3.
The bolt material 430 is a high-strength bolt, has a hexagonal head, and is used together with a nut 431 screwed into the tip of the main body shaft.

The first connecting member 41 is a bolt that connects the pillar member 2 and the first metal fitting 410 in the main body fitting 40, and has a main body shaft having a male thread formed on the outer surface of the tip and a diameter larger than the main body shaft. It has a head 41a. Further, the first connecting member 41 is used as a set with a nut 41b and a washer 41c. The washer 41c is fitted into a recess 2f formed in the column 2.

The second connecting member 42 is a stud bolt without a head that connects the reinforcing frame member 3 and the second metal fitting 420 of the main metal fitting 40, and has a male thread formed on the entire outer surface or one end thereof. Most of it is embedded in the connection insertion hole 3a formed in the reinforcing frame material 3. Further, the second connecting member 42 is used as a set with the nut 42a.

Here, the configurations of the first hardware 410 and the second hardware 420 will be explained in more detail.

As shown in FIG. 4, the first hardware 410 is a hardware integrally formed by welding a fixing plate portion 411, a joining plate portion 412, an end plate portion 413, and a rib plate portion 414. be. Further, the first hardware 410 is formed into a T-shape in plan view by a fixing plate portion 411 and a joining plate portion 412.

The fixing plate part 411 is a part fixed to the inner surface 2d of the pillar material 2, and has a plurality of bolt holes 411a and a plurality of screw holes 411b.
The plurality of bolt holes 411a are through holes through which the first connecting members 41 are passed, and are arranged corresponding to the positions of the connecting insertion holes 3a and the first connecting members 41 in the reinforcing frame material 3.
The plurality of screw holes 411b are through holes through which screws for temporarily fixing the fixing plate part 411 to the inner surface 2d of the pillar material 2 are passed. The screws may be left in place after the first hardware 410 is permanently fixed to the pillar material 2 by the first connecting member 41.

The joint plate part 412 is a part that is in contact with the second metal part 420 and is joined to the second metal part 420 by the bolt material 430, and is perpendicular to the inner surface of the fixed plate part 411 (the surface on the second metal part 420 side). It is provided.
A plurality of first through holes 412a are formed in this joint plate portion 412, through which the main body shaft of the bolt material 430 passes. The plurality of first through holes 412a are elongated holes that are longer in the horizontal direction than in the vertical direction, and the elongated holes function as the above-mentioned error absorbing section.

The end plate portion 413 is a portion that is joined to the upper and lower end surfaces of the joint plate portion 412 and is also joined to the upper and lower ends of the fixed plate portion 411 to improve the attachment strength of the joint plate portion 412 to the fixed plate portion 411. It is. This end plate portion 413 is formed in an isosceles triangular shape or an equilateral triangular shape.

The rib plate portion 414 is joined to the side surface of the joint plate portion 412 (the front side and back side surface of the frame structure 1), and is joined to the inner side surface of the fixed plate portion 411 (the surface on the second hardware 420 side). This is a portion that improves the attachment strength of the joint plate portion 412 to the fixed plate portion 411. This rib plate portion 414 is formed in the shape of a right triangle, and the right angle portion is arranged at the corner between the fixed plate portion 411 and the joining plate portion 412.

The end portions of the end plate portion 413 and the rib plate portion 414 (the front side and rear side ends of the frame structure 1) are connected to the ends of the fixed plate portion 411 (the front side and rear side edges of the frame structure 1). The dimensions are set so that it does not reach the end. This makes it easier to drive screws into the plurality of screw holes 411b formed at the end of the fixed plate part 411, and the rotation of a tool such as a wrench used when providing the nut 41b at the tip of the first connecting member 41. This is to ensure the range (rotation angle). That is, the first hardware 410 is fixed to the inner surface 2d of the existing pillar material 2 at the site.

Further, the plurality of first through holes 412a formed in the joining plate part 412 are provided at substantially the same height position as the plurality of bolt holes 411a formed in the fixed plate part 411. The plurality of first through holes 412a are formed in the area between the upper end plate 413 and the upper rib plate 414, and the area between the lower end plate 413 and the lower rib plate. 414.

As shown in FIG. 5, the second hardware 420 is a hardware that is integrally formed by welding a fixing plate portion 421, a joining plate portion 422, and a rib plate portion 424. Further, the second hardware 420 is formed into an L-shape in plan view by a fixing plate portion 421 and a joining plate portion 422.
Further, the second hardware 420 is provided on both the front side and the back side of the first hardware 410, as shown in FIG. 3 and the like. In other words, the first hardware 410 is sandwiched between the two second hardware 420. A gap corresponding to the thickness of the joint plate portion 412 in the first metal fitting 410 is formed between the two second metal fittings 420 .

The fixing plate part 421 is a part fixed to the inner surface 2d of the pillar material 2, and has a plurality of bolt holes 421a.
The plurality of bolt holes 421a are through holes through which the second connecting member 42 is passed, and are arranged corresponding to the positions of the connecting insertion hole 2a and the second connecting member 42 in the pillar material 2.

The joining plate part 422 is a part that is connected to the front side or the back side of the joining plate part 412 of the first hardware part 410 and is joined to the first hardware part 410 by the bolt material 430. It is provided perpendicularly to the metal fitting 410 side surface).
Furthermore, the joint plate portion 422 is formed in a U-shape (concave shape) when viewed from the front. That is, the joint plate part 422 includes a pair of protrusions 422b that protrude long from the outer surface of the fixing plate part 421 toward the first metal fitting 410, and is integrally formed between the pair of protrusions 422b and connects the pair of protrusions. It has a reinforcing part 422c that reinforces the part 422b.
Further, a plurality of second through holes 422a are formed in the pair of protrusions 422b of the joint plate portion 422, through which the main body shaft of the bolt material 430 passes. Although the plurality of second through holes 422a are circular holes in this embodiment, they may be elongated holes (error absorbing portions) that are longer in the horizontal direction than in the vertical direction. When the plurality of second through holes 422a are elongated holes, the plurality of first through holes 412a may be circular holes or elongated holes. When both the first through hole 412a and the second through hole 422a are long holes, the dimensions are made long enough to absorb the horizontal positional error between the adjacent existing pillar material 2 and reinforcing frame material 3. be able to.

The rib plate portion 424 is joined to the upper and lower edges of the side surfaces (the front side or back side surface of the frame structure 1) of the pair of protrusions 422b in the joint plate portion 422, and the outer side surface ( This is a portion that is joined to the first metal fitting 410 side surface) and improves the attachment strength of the joint plate portion 422 to the fixed plate portion 421. This rib plate portion 424 is formed in a right-angled triangular shape, and the right-angled portion is arranged at the corner between the fixed plate portion 421 and the joining plate portion 422.

Further, the plurality of second through holes 422a formed in the joint plate part 422 are provided at substantially the same height position as the plurality of bolt holes 421a formed in the fixed plate part 421. Further, the plurality of second through holes 422a are arranged in a region between the two upper rib plate portions 424 and a region between the two lower rib plate portions 424. That is, the plurality of second through holes 422a are formed in a pair of protrusions 422b in the joint plate portion 422.

The first hardware 410 configured as described above is fixed to the inner side surface 2d of the adjacent existing pillar material 2 by the plurality of first connecting members 41.
To explain in more detail, when the first hardware 410 is fixed to the inner surface 2d of the column 2 by the plurality of first connecting members 41, a washer 41c is inserted between the head 41a of the first connecting member 41 and the nut 41b. , the pillar material 2 and the fixing plate portion 411 of the first hardware 410 are in a sandwiched state.
In this embodiment, the head 41a is located on the washer 41c side, and the nut 41b is located on the first hardware 410 side. The tip of the first connecting member 41 on the main body axis is arranged on the inner surface 2d of the fixing plate portion 411 of the first metal fitting 410, and the nut 41b is also screwed into the tip of the main body axis of the first connecting member 41. The fixing plate portion 411 is disposed on the inner surface 2d of the fixing plate portion 411.

The part of the first connecting member 41 that is inserted into the connecting insertion hole 2a in the column 2 simply passes through the connecting insertion hole 2a. They are joined by tightening the nut 41b. That is, the first connecting member 41 functions as a so-called pull bolt. Thereby, moment resistance bonding is applied to the joint portion of the first connecting member 41 to the pillar material 2, which resists the external force when the pillar material 2 receives an external force. Therefore, in the frame structure 1, the vicinity of the joint of the first connecting member 41 to the column member 2 is in a state of high toughness.
Here, toughness refers to a property for exhibiting tenacity that does not significantly reduce the function of the framework even after the framework structure 1 is deformed by an external force. Such toughness is ensured by connecting the adjacent existing pillar materials 2 to the reinforcing frame material 3 by the connecting portions 4, and by moment-resistance welding the first connecting material 41 to the adjacent pillar materials 2. .

Further, the second metal fitting 420 configured as described above is fixed to both longitudinal end surfaces (first metal fitting 410 side) of the reinforcing frame member 3 by a plurality of second connecting members 42.
To explain in more detail, the second connecting member 42 is embedded in the connecting insertion hole 3a formed in the reinforcing frame member 3. Further, one end portion of the second connecting member 42 (the end portion protruding toward the first hardware 410 side) is arranged on the outer surface (the surface on the first hardware 410 side) of the fixing plate portion 421 in the second hardware 420, and a nut 42 a is also screwed into one end of the second connecting member 42 and arranged on the outer surface of the fixing plate part 421 .

A portion of the second connecting member 42 that is embedded in the connecting insertion hole 3a in the reinforcing frame member 3 is joined to the reinforcing frame member 3 by the above-described glue-in rod method. That is, the gap between the second connecting member 42 and the connecting insertion hole 3a on the reinforcing frame material 3 side is filled with adhesive, and as the adhesive hardens, the stress is reduced by the adhesive force of the adhesive and the second connecting member 42. This is a method to generate bonding strength by transmitting the bonding strength through the As a result, a moment resistance joint is applied to the joint portion of the second connecting member 42 to the reinforcing frame material 3, which resists the external force when the reinforcing frame material 3 receives an external force. Therefore, in the frame structure 1, the vicinity of the joint of the second connecting member 42 to the reinforcing frame member 3 is in a state of high toughness.
Such toughness is ensured by connecting the adjacent existing pillar members 2 to the reinforcing frame member 3 through the connecting portions 4, and by moment-resistance welding the second connecting member 42 to the reinforcing frame member 3.

Further, the protruding portion 422b of the joint plate portion 422 in the second hardware 420 is sandwiched between the end plate portion 413 and the rib plate portion 414 on the front and back sides of the joint plate portion 412 in the first hardware 410. placed in the area. By being arranged in this way, the positions of the plurality of second through holes 422a formed in the protruding part 422b of the joint plate part 422 in the second hardware 420 and the positions of the plurality of second through holes 422a formed in the joint plate part 412 in the first hardware 410 are adjusted. The positions of the plurality of first through holes 412a match. Therefore, the bolt material 430 can be passed through the plurality of first through holes 412a and the plurality of second through holes 422a at once.
Since the plurality of first through-holes 412a are horizontally elongated holes as described above, the first metal fitting 410 and the second metal fitting 420 are arranged along the length direction of the plurality of first through-holes 412a. The spacing can be adjusted.

When the nut 431 is screwed into the tip of the bolt material 430 and firmly tightened, a strong frictional force is generated between the joint plate portion 412 of the first metal fitting 410 and the joint plate portion 422 of the second metal fitting 420. Therefore, by strongly tightening the bolt material 430, the connection strength between the adjacent existing pillar material 2 and the reinforcing frame material 3 can be improved.

Next, the upper and lower frame members 5 will be explained.
The upper and lower frame members 5 are provided at the upper and lower ends of the adjacent existing pillar members 2, and connect the upper ends and the lower ends of the adjacent existing pillar members 2.
The upper and lower frame members 5 are structural laminated timbers that are longer in the horizontal direction (lateral direction and left-right direction) than in the up-down direction, and are formed into a rectangular shape when viewed in longitudinal section.
Note that the upper and lower frame members 5 may be provided not only at the upper and lower end portions of adjacent existing pillar members 2 but also at intermediate portions in the vertical direction of adjacent existing pillar members 2.

At both ends of the upper and lower frame members 5, there are a plurality of connection insertion holes into which a plurality of rods 5a are inserted for joining both ends of the upper and lower frame members 5 and the adjacent existing pillar members 2. It is formed. Moreover, a plurality of connection insertion holes 2b into which a plurality of rods 5a are inserted are formed at the upper and lower ends of the adjacent existing pillar members 2. These plural connection insertion holes 2b are through holes that penetrate the column material 2 in the left-right direction. The positions of the plurality of connecting insertion holes formed in the upper and lower frame members 5 are aligned with the positions of the plurality of connecting insertion holes 2b formed in the adjacent existing pillar members 2. Therefore, the plurality of bars 5a can be inserted toward the upper and lower frame members 5 from the left side of the left column 2 and the right side of the right column 2. Further, the adjacent existing pillar members 2 and the upper and lower frame members 5 are moment-resistance joined by a plurality of rod members 5a using a glue-in rod method.
In addition, when the adjacent existing pillar materials 2 constitute a traditional wooden building typified by the architecture of a temple or shrine, the upper and lower frame materials 5 may not be used.

Next, the splint 6 will be explained.
The splint 6 is a piece of wood that is provided along the inner side surface 2d of the adjacent existing pillar members 2 and is in contact with the vertical side end surface of the main hardware 40 (first hardware 410) in the connecting portion 4. This splint 6 comes into contact with the upper and lower end surfaces of the main hardware 40, thereby making it possible to prevent the main hardware 40 from vertically sliding or rotating in the vertical direction.
Note that the front surface of the splint 6 and the surface (front surface) of the existing pillar material 2 are flush with each other, and the back surface of the splint 6 and the surface of the existing pillar material 2 are flush with each other. The surface of the material 2 (the surface on the back side) is also flush.

Next, the panel material 7 will be explained.
The panel material 7 is a rectangular board material made of plywood, particle board, OSB (Oriented Strand Board), or the like. Such a panel material 7 has a width dimension (dimension in the left-right direction) set to be longer than the interval dimension between adjacent existing pillar materials 2, and is arranged on the same vertical plane among the adjacent existing pillar materials 2. It is provided and bonded between the front side and back side surfaces. By pasting and providing such a panel material 7 on the surface of the frame structure 1, the frame structure 1 can function as a load-bearing wall.
The panel material 7 may be a single large-sized one, or a plurality of divided panel materials 7 may be arranged vertically and provided between adjacent existing pillar materials 2.
Further, the panel material 7 may be in contact with the front and back surfaces of the upper and lower frame members 5 and may be joined by adhesive.
The panel material 7 is joined to the existing pillar material 2, upper and lower frame materials 5, and splints 6 by adhesive, but is not limited to this. They may be fixed and joined using a fixture such as.
Moreover, when the panel material 7 divided|segmented into multiple is provided side by side in the up-down direction, the panel material 7 joined by adhesive and the panel material 7 joined by the fixture may coexist. Furthermore, in some cases, the panel material 7 may not be provided partially, such as in areas where openings are formed.

Furthermore, some traditional wooden buildings, such as temples and shrines, use the Makabe construction method. In such a case, the width of the splint 6 may be shortened to make it narrower, and the panel material 7 may be provided between the front and back surfaces of the splint 6. When the panel material 7 is provided in this way, the surface of the panel material 7 is placed deeper than the surface of the adjacent existing pillar material 2, so that it can be made to look like a wall surface created by the true wall construction method.

Further, the reinforcing frame material 3 and the second hardware 420 of the main body hardware 40 provided at both ends of the reinforcing frame material 3 are connected to each other by a plurality of second connecting members 42 in a factory or the like before the seismic retrofitting of the framework structure 1. It is assumed that they have been connected in advance. Thereby, the reinforcing frame material 3 and both second metal fittings 420 can be handled as one member.
Further, the joint portion with the first metal fitting 410 is a joint plate portion 422 that projects perpendicularly from the fixed plate portion 412. Therefore, even if the reinforcing frame material 3 and both second metal fittings 420 are connected in advance as one member, the first metal fitting 410 and the pillar material 2 can be reliably connected by the first connecting material 41. It has become. In other words, connecting the reinforcing frame material 3 and both second metal fittings 420 in advance to form a single member does not hinder the construction of the first connecting material 41, and can improve workability on site. can.

The frame structure 1 configured as described above can be used, for example, for medium-rise and high-rise wooden buildings, and wooden buildings with a large total area, among various wooden buildings such as traditional wooden buildings such as temples and shrines. It is built into a relatively large wooden structure such as a building. For example, when the frame structure 1 receives a strong external force (horizontal force) due to an earthquake, typhoon, etc., adjacent existing pillar members 2 tend to move so as to tilt in the same direction. In response to such movement of the existing pillars 2, if the reinforcing frame material 3 is installed between the adjacent existing pillars 2, the adjacent existing pillars 2 will tend to tilt in the same direction. can be suppressed.
Further, both ends of the adjacent existing pillar materials 2 and reinforcing frame materials 3 are connected by a connecting portion 4, and the plurality of first connecting members 41 and the plurality of second connecting members 42 that constitute the connecting portion 4 are Since the pillars 2 are arranged side by side in the length direction (vertical direction), the plurality of first connecting members 41 and the plurality of second connecting members 42 also ensure that the adjacent existing pillars 2 are in the same direction. It is possible to suppress the movement that tries to lean towards the other side.

Further, in the frame structure 1, the rigidity of the first connecting member 41 is set lower than the rigidity of the second connecting member 42. That is, the first connecting member 41 is more easily deformed than the second connecting member 42. Therefore, when a large external force is applied to the reinforced frame structure 1 due to, for example, an earthquake, the first connecting member 41 deforms before the second connecting member 42. However, since the first connecting member 41 is moment-resistance welded to the adjacent existing pillar member 2, it exhibits toughness and holds up tenaciously even after being deformed. This can prevent deformation and damage to the members.
Even if a large external force is applied to the frame structure 1 due to an earthquake or the like, if the damage can be limited to only the first connecting member 41, then the repair of the frame structure 1 can be as simple as replacing the first connecting member 41. That would be enough.
Note that in order to create the above-described difference in rigidity, the first connecting member 41 and the second connecting member 42 use bolts of different materials and different sizes. The first connecting member 41 uses, for example, a steel bolt, and the second connecting member 42 uses, for example, a titanium bolt.

Furthermore, in the frame structure 1, the rigidity of the first connecting member 41 is set lower than the rigidity of the bolt material 430 that connects the first metal fitting 410 and the second metal fitting 420. That is, the first connecting member 41 is more easily deformed than the bolt member 430. Therefore, when a large external force is applied to the reinforced frame structure 1 due to, for example, an earthquake, the first connecting member 41 deforms before the bolt member 430.
Note that either the rigidity of the second connecting member 42 or the rigidity of the bolt material 430 may be lower, or may be set equal to each other.

In this embodiment, since the nut 41b of the first connecting member 41 is arranged on the inner surface of the first metal fitting 410, for example, the frame structure 1 receives a large external force and the first connecting member 41 is deformed. In this case, the first connecting member 41 can be replaced by removing it from the outer surface 2e of the column 2. Since the first metal fitting 410 is supported from below by the splint 6 and is sandwiched between the splint 6 on the upper side, when replacing the first connecting member 41, the first connecting member 410 is Even if the material 41 is completely removed, the first hardware 410 will not fall off.
In addition, when the panel material 7 is pasted on the surface of the framework structure 1, after the panel material 7 is removed, the replacement|exchange work of the 1st connection material 41 is performed.

According to this embodiment, moment resistance joints are applied to the joints of the first connecting members 41 and the pillars 2 to resist external forces when the pillars 2 are subjected to external forces. In the frame structure 1, the vicinity of the joint of the first connecting member 41 to the column member 2 is in a state of high toughness. Thereby, the toughness of the existing frame structure 1 can be improved, so that sufficient earthquake resistance can be maintained in various wooden buildings including traditional wooden buildings.
Further, in the connecting portion 4, the main body hardware 40 provided between the adjacent existing pillar materials 2 and both ends of the reinforcing frame material 3 is connected between the adjacent existing pillar materials 2 and the reinforcing frame material 3. Since it has an error absorbing part that absorbs errors in the horizontal position of the pillars, for example, due to aging or having been subjected to large external forces in the past, the distance between adjacent pillars 2 may widen or narrow. Even if there is an error in the position of adjacent existing pillars 2, such as when there is a gap, the error can be absorbed by the error absorbing section, and the earthquake resistance of the existing frame structure 1 can be reliably and easily repaired. be able to.

Also, a first through hole 412a is formed to penetrate in the thickness direction of a portion of the first hardware 410 that is connected to the second hardware 420, and a first through hole 412a is formed to penetrate in the thickness direction of a portion of the second hardware 420 that is connected to the first hardware 410. Since at least one of the second through holes 422a formed through the second through hole 422a is a long hole that is longer in the horizontal direction than in the vertical direction, the bolt material 430 passes through the first through hole 412a and the second through hole 422a. so that when the first hardware 410 and the second hardware 420 are connected, the horizontal position of the first hardware 410 and the second hardware 420 can be adjusted within the length of the elongated hole, It functions reliably as an error absorber. As a result, even if there is an error in the position of adjacent existing pillars 2, for example, the error absorption section can absorb the error, making it possible to reliably and easily perform seismic retrofitting of the existing frame structure 1. It can be carried out.

Further, since the yield point of the first connecting member 41 is set lower than the yield point of the second connecting member 42, the first connecting member 41 becomes more plastic than the second connecting member 42. Therefore, when a large external force is applied to the frame structure 1 due to, for example, an earthquake, the first connecting member 41 becomes plastic before the second connecting member 42. However, since the first connecting member 41 is moment-resistance joined to the adjacent first frame member 2, it exhibits toughness and holds up tenaciously even after being deformed. Deformation and damage of the members are less likely to occur. Moreover, even if a large external force is applied to the frame structure 1 due to an earthquake or the like, if the damaged part can be limited to the first connecting member 41, the repair of the frame structure 1 can be performed only on the first connecting member 41. Since all that is required is replacement, even if damage occurs, it can be easily and inexpensively repaired.

In addition, since the first connecting member 41 is provided along the extension line of the second connecting member 42, the first connecting member 41 also connects the adjacent existing pillar members 2 in the same way as the second connecting member 42. It is possible to reliably join the main body hardware 40 with moment resistance, and the deformation performance of the frame structure 1 can be improved.

[Modified example]
Note that the embodiments to which the present invention is applicable are not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the present invention. Modifications will be described below. The following modifications may be combined as much as possible. In addition, in the following modified examples, elements common to the above-described embodiments are given the same reference numerals, and the description thereof will be omitted or simplified.

In the above embodiment, at least one of the first through hole 412a and the second through hole 422a is a long hole that is longer in the horizontal direction than in the vertical direction, and the long hole is connected to the adjacent existing pillar material 2. This is an error absorbing portion that absorbs the horizontal positional error between the reinforcing frame material 3 and the reinforcing frame material 3.
On the other hand, as shown in FIG. 7, the error absorbing section in this modification is provided between the adjacent existing pillars 2 and the main body hardware 40 (the fixing plate part 411 of the first hardware 410). The adjustment material 440 adjusts the In other words, the distance between adjacent existing pillars 2 may have widened due to aging or having been subjected to large external forces in the past, but the adjustment material 440 Fill gaps between members (referring to gaps between adjacent existing pillar materials 2 and main body hardware 40, gaps between reinforcing frame materials 3 and main body hardware 40) caused by widening the distance between adjacent pillar materials 2. be able to.

The adjustment material 440 is a plate material provided between the existing pillar material 2 and the fixing plate portion 411 of the first hardware 410 in the main hardware 40, and in this modification, a rectangular metal plate is adopted. . The adjustment member 440 is fixed to the inner surface 2d of the pillar member 2, and has a plurality of bolt holes and a plurality of screw holes.
The plurality of bolt holes are through holes through which the first connecting member 41 is passed, and are arranged corresponding to the positions of the plurality of bolt holes 411a formed in the fixing plate portion 411 of the first hardware 410. One connecting member 41 is passed through.
The plurality of screw holes are screws for temporarily fixing the adjusting member 440 to the inner surface 2d of the column 2, and screws for temporarily fixing the fixing plate portion 411 of the first hardware 410 to the inner surface 2d of the column 2. This is a through hole through which the The screws may be left in place after the adjusting member 440 is permanently fixed to the column member 2 by the first connecting member 41.

The width of the adjusting member 440 in this modification is set to be approximately equal to the width of the inner surface 2d of the pillar member 2, and the vertical dimension is the vertical dimension of the fixing plate portion 411 in the first hardware 410. is set approximately equal to
However, the present invention is not limited to this, and the width of the adjusting member 440 may be set to be approximately equal to the width of the fixing plate portion 411 in the first hardware 410.

In addition, the adjusting member 440 in this modification is provided between the adjacent existing pillar material 2 and the main body hardware 40, but the adjustment member 440 is provided between both ends of the reinforcing frame material 3 and the main body hardware 40 (two second hardware). 420 and the fixing plate part 421). In this case, the width of the adjustment member 440 is set to be approximately equal to the width of the longitudinal side end surface of the reinforcing frame material 3, and the vertical dimension is set to be approximately equal to the width of the longitudinal side end surface of the reinforcing frame material 3. It is set approximately equal to the dimension in the direction. Furthermore, the plurality of screw holes are arranged corresponding to the positions of the plurality of bolt holes 421a formed in the fixing plate portions 421 of the two second metal objects 420, and the second connecting member 42 is passed therethrough.

Note that the adjustment material 440 is provided not only in either one but also between the adjacent existing pillar members 2 and the main body hardware 40 and between both ends of the reinforcing frame material 3 and the main body hardware 40. It's okay to be hit.

According to this modification as described above, the error absorbing portion is provided between the adjacent existing pillar material 2 and the main body hardware 40 or/and between both ends of the reinforcing frame material 3 and the main body hardware 40. Since the adjusting material 440 is used to adjust the gap, for example, due to aging or being subjected to large external forces in the past, the distance between adjacent pillars 2 may increase, and the position of the existing adjacent pillars 2 may change. Even if an error occurs, the error can be absorbed by the adjusting member 440, and the earthquake resistance of the existing frame structure 1 can be reliably and easily performed.

1 Frame structure 2 Pillar material 2a Connection insertion hole 2d Inner surface 2f Recessed portion 3 Reinforcement frame material 3a Connection insertion hole 4 Connection portion 40 Main hardware 410 First hardware 411 Fixed plate portion 412 Joint plate portion 412a First penetration Hole (error absorption part)
420 Second hardware 421 Fixed plate part 422 Joint plate part 422a Second through hole 430 Bolt material 440 Adjustment material (error absorption part)
41 First connecting material 42 Second connecting material

Claims (5)

A structure for reinforcing an existing frame structure that includes at least existing pillar members adjacent to each other at intervals,
a reinforcing frame material arranged between the adjacent existing pillar materials;
A connecting part that connects the adjacent existing pillar materials and both ends of the reinforcing frame material,
The connecting portion is
a main body metal fitting provided between the adjacent existing pillar materials and both ends of the reinforcing frame material;
a rod-shaped first connecting member that connects the pillar material and the main body hardware;
It has a rod-shaped second connecting member that connects the reinforcing frame material and the main body hardware,
The main body hardware includes an error absorption part that absorbs a horizontal positional error between the adjacent existing pillar material and the reinforcing frame material,
A moment resistance joint is applied to the joint portion of the first connecting member to the pillar material, which resists the external force when the pillar material receives an external force,
A frame reinforcement structure characterized in that a moment resistance joint is applied to a joint portion of the second connecting member to the reinforcing frame material to resist an external force when the reinforcing frame material receives an external force. . In the frame reinforcement structure according to claim 1,
The main hardware is
a first hardware provided on the pillar side between the adjacent existing pillars and both ends of the reinforcing frame material;
a second hardware provided on the reinforcing frame material side between the adjacent existing pillar materials and both ends of the reinforcing frame material;
A bolt material connecting the first hardware and the second hardware,
The first metal fitting has a first through hole formed through the thickness direction of a portion of the first metal fitting to be connected to the second metal fitting, and through which the bolt material is passed;
The second hardware has a second through hole formed through the thickness of a portion of the second hardware that is connected to the first hardware, and through which the bolt material is passed;
At least one of the first through hole and the second through hole is a long hole that is longer in the horizontal direction than in the vertical direction, and the long hole is the error absorbing portion. Reinforced structure. In the frame reinforcement structure according to claim 1,
The error absorbing portion is an adjustment member provided between the adjacent existing pillar materials and the main body hardware, or/and between both ends of the reinforcing frame material and the main body hardware to adjust the gap. A frame-reinforced structure characterized by: The frame reinforcement structure according to any one of claims 1 to 3,
The frame reinforcement structure is characterized in that the yield point of the first connecting member is set lower than the yield point of the second connecting member. The frame reinforcement structure according to any one of claims 1 to 4,
The second connecting member connects the upper end side and the lower end side of both ends of the reinforcing frame material to the main body hardware,
The frame reinforcement structure is characterized in that the first connecting member is provided along an extension line of the second connecting member.

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