JP4160078B2 - Construction structure of building members using fiber sheet as the main joining material - Google Patents

Description

The present invention relates to a building member joining structure in which each building member constituting a frame of a wooden building is bonded and reinforced by using a fiber sheet as a joining main material.
This application claims priority about the actual application 2003-273087 for which it applied on December 12, 2003, and uses the content here.

The collapse of buildings due to earthquakes, etc. is caused by damage to the building members themselves or the joints between the building members that make up the building's enclosure. In particular, the improvement of the earthquake resistance and wind resistance performance of existing wooden buildings It has become a big social problem.
For this reason, in recent years, since the Great East Japan Earthquake, it has been obliged to join main building members together using special tensile metal fittings for earthquake resistance. Especially in new construction of houses, performance such as earthquake resistance and wind resistance is required, so it is special to increase the diameter of pillars, use high strength members such as engineered wood, and improve earthquake resistance. The strength of walls, floors, roofs, etc. has been increased by using tensile metal fittings or thick structural plywood that increases surface rigidity.

However, in the above-mentioned joining structure, the special tension metal fitting used for the joining is large and complicated, so there is a problem that it requires a lot of labor for its installation work, When attaching to a building, for example, attention has to be paid to the connection between the studs, frame members, building materials, base materials, etc. and the reinforcing bracket. Moreover, in the connection between the metal fittings and the wood and the foundation concrete, the method of attaching the metal fittings is complicated, and there are cases where the construction cannot be performed in the existing building, and further, the construction work requires time and labor, resulting in an increase in cost.
Furthermore, the joint metal fitting used in the newly built building has a problem that the loosening of the building member causes loosening, and the joint yield strength is rapidly lowered due to the splitting fracture of the wood due to excessive stress. In addition, a new cross-sectional defect of wood occurs due to the installation of metal fittings, and there is a decrease in yield strength, and in the case of extension and renovation, there is a reduction in yield strength resulting from the decay of existing parts. There were problems such as.
In addition, this type of joint fitting also has the problem of corrosion due to salt damage, etc., and the condensation in the walls due to heat bridges causes rot of the wood part, degradation of the performance of the heat insulating material, and heat insulation defects. ing.
Here, technology to bond and bond fibers to building components of buildings is being considered, but the tensile strength and toughness that are the characteristics of fibers simply by cutting the fibers, bending them, and sticking them together Thus, it was difficult to perform highly reliable joining.
As a conventional fiber reinforcement technology, fiber is used as a reinforcing material for reinforcement bars (strip bars, slab auxiliary bars, etc.) for public roads, railway viaduct columns, reinforced concrete building columns, beams, slabs, walls, tunnel inner walls, etc. Although it is actively used for seismic reinforcement work, it has not been used for wooden buildings.

  The present invention has been made in view of the above circumstances, taking advantage of the properties of a reinforcing material made of a fiber in which a high tensile strength fiber such as aramid fiber, carbon fiber, glass fiber, etc. is formed into a sheet shape, and is replaced with a tensile joint fitting. In order to provide a highly reliable building member joint structure that can be used together with an adhesive as the main material for joining and can be bonded and reinforced extremely easily and at low cost by planar construction. Yes.

The present invention is a construction structure for building members in which building members constituting a frame of a wooden building are bonded and reinforced by using a fiber sheet as a bonding main material, and the building members to be joined are two-by-methods. Or a structural plywood used in the panel method, a fiber having high tensile strength across the joints between the frame materials before construction of the structural plywood and the surfaces of the structural plywood after construction The fiber sheet formed in the form of a sheet is adhered by an adhesive, and the surface of the fiber sheet is further coated with an adhesive.

Further, in the present invention, the structural plywood includes a wall structure plywood and a floor structure plywood, and a wall portion made of the wall structure plywood and a floor portion made of the floor structure plywood are joined together. It is preferable that the fiber sheet is bonded in a substantially horizontal L shape along the corners forming the corner joints .

According to the joining structure of building members of the present invention, the frame members before constructing the structural plywood constituting the building frame of the building by the structural plywood used in the two-by method or the panel method, and the structural plywood after the construction A fiber sheet made of aramid fiber, carbon fiber, glass fiber, etc. that is not only high in tensile strength but also excellent in toughness is pasted to the surface of the building member across each joint with each other with an adhesive By using it as a main joining material instead of metal fittings, the joints between the frame materials before construction of these structural plywood and the surfaces of the structural plywood after construction are joined with high strength and flexibility. And can be further reinforced. Thereby, a building structure of a building by a structural plywood having excellent seismic resistance can be obtained without causing the respective building members to be detached at a low cost during an earthquake.
Also, since the surface of the fiber sheet affixed to the building material is coated with an adhesive, the bond strength between the fiber sheet and the building member is greatly improved compared to a reinforcing structure that is simply bonded. As a result, integration is achieved and high strength adhesive bonding / reinforcement is achieved.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments, and for example, the constituent elements of these embodiments may be appropriately combined.
In FIG. 1, reference numeral 1 denotes a fabric foundation (foundation). A foundation 2 is fixed to the upper surface of the cloth foundation 1, and a pillar 3 is erected on the upper surface of the foundation 2. .
The fiber sheet 4 is adhered and bonded to one of the front and back surfaces that are flush with each other at the joint between the base 2 and the pillar 3 by an adhesive. In this case, the bonding between the base 2 and the pillar 3 is shown, but it is needless to say that the bonding including the foundation 1 can be bonded and reinforced.
This fiber sheet 4 is a sheet in which fibers having high tensile strength such as aramid fiber, carbon fiber or glass fiber and excellent in toughness are formed in a sheet shape. Each of the fiber sheet 4 has predetermined dimensions on the base 2 side and the column 3 side. (Approximately 100 mm to 200 mm or so) are pasted and joined for the length dimension.
The fiber sheet 4 bonded with an adhesive is coated with an adhesive on the surface thereof.

Next, in the case of constructing this joint structure, each cut fiber sheet, adhesive pack, construction tool (roller A case will be described in which a rubber spatula, polyethylene gloves, wire brush, etc.) are housed in one box (FIG. 26) and used as a set product (FIG. 27).
As the adhesive (FIG. 28) used here, it is preferable to use a two-component adhesive that starts curing by mixing two kinds of solvents, such as an epoxy adhesive. Specifically, it is preferable to use a pack-like adhesive containing bag made of a flexible synthetic resin such as polyethylene or vinyl and having a clip capable of dividing the containing portion. That is, an appropriate amount of solvent (main agent and curing agent) is accommodated in each of the accommodating portions divided into two by the clip, the clips are removed according to the construction procedure (FIG. 29), and the mutual accommodating portions are communicated with each other. Mix and start curing. Then, the mixed adhesive is squeezed out from the adhesive-containing bag, and the adhesive is evenly applied to the adhesive surface to which the fiber sheet 4 of the pillar 3 and the base 2 is attached, and then the adhesive is used using a roller or a rubber spatula. Extend to smooth.
In this way, when the adhesive is sufficiently applied to the adhesive surface, the fiber sheet 4 is applied to each of the building members of the pillar 3 and the base 2 on the adhesive surface to which the adhesive is applied. The fiber sheets 4 are attached so that the portions overlap each other, and then the adhesive is impregnated into the fiber sheet 4. Thereafter, the adhesive is further overcoated on the surface of the fiber sheet 4.
And by sticking the fiber sheet 4 with an adhesive in this way, the joint portion between the base 2 and the pillar 3 is joined and reinforced with extremely high strength and flexibility by the fiber sheet 4 having excellent toughness.
In the above example, the fiber sheet 4 is attached to only one side of the joint between the base 2 and the column 3, but by attaching the fiber sheet 4 to both sides, the fiber sheet 4 is bonded with higher tensile strength. Of course, it can be joined and reinforced.
In addition, as shown in FIG. 2, the adhesive joining / reinforcing at the joint between the base 2 and the pillar 3 may be performed at the corner of the building. Each fiber sheet 4 is affixed.
In this case, the joining at the protruding corner is shown, but it goes without saying that the joining at the entering corner can also be performed. Further, in this case, the joining of the base 2 and the pillar 3 is shown, but it is needless to say that the base 1 and the base 1 can be bonded and joined.

Next, other joining structures will be described in order. The one shown in FIG. 3 represents a joint portion where the foundation 1, the base 2, and the pillar 3 are joined, and particularly where a large pulling force is applied, and is bonded and reinforced by a total of three fiber sheets 4 It is. As shown in FIG. 3, the three fiber sheets 4 are bonded and reinforced by straddling the foundation, base, and pillar, respectively. That is, the fiber sheet 4 is bonded from the foundation 1 to the pillar 3 through the base 2. In FIG. 3, of the attached fiber sheets 4, the fiber direction of the substantially vertical direction is indicated by reference numeral 4 </ b> A, the substantially upwardly inclined direction is indicated by 4 </ b> C <b> 1, and the substantially upward leftward is indicated by 4 </ b> C <b> 2. ing.
In this case, the joining of the foundation 1, the base 2 and the pillar 3 is shown, but not limited to this, the joining of the pillar 3 and the horizontal member 5 at the joint where a large pulling force is applied. Of course, it can be applied.

4 shows a structure in which the joint portion between the column 3 and the horizontal member 5 such as a beam is bonded and reinforced by the fiber sheet 4. FIG. 5 shows the both side surfaces of the corner portion. Are bonded and reinforced by one fiber sheet 4 each.
6 is a fiber sheet 4 in which the joint between the upper and lower columns 3 and the horizontal member 5 such as a trunk difference is adhesively bonded and reinforced.
Furthermore, what is shown in FIG. 7 is one in which the corners of the joints between the pillars 3 on the upper and lower floors and the horizontal members 5 are bonded and reinforced by a total of three fiber sheets 4. In FIG. 7, among the attached fiber sheets 4, those in which the fiber direction is substantially vertical are indicated by reference numeral 4 </ b> A, and those in the substantially horizontal direction are indicated by reference numeral 4 </ b> B. That is, as shown in the drawing, one fiber sheet 4A is attached to each side surface of the joint between the upper and lower columns 3 and the horizontal member 5, and the corners of the joint are interposed. Then, a single fiber sheet 4B is stuck in an L-shape across both side surfaces of the horizontal member 5.
In this case, one fiber sheet 4B is attached in an L shape at the corner of the joint between the upper and lower columns 3 and the horizontal member 5, but not limited to this, the corner of every joint is not limited to this. Needless to say, one fiber sheet 4B can be adhered and reinforced by sticking in an L shape.

The fiber sheet 4 is bonded and reinforced around the split portion C generated on the side surface of the horizontal member 5 such as a beam, and the lower end surface of the horizontal member 5 is shown in FIG. A fiber sheet 4 having a length substantially the same as the length of the horizontal member 5 is attached to bend and reinforce. In FIG. 8, among the attached fiber sheets 4, those in which the fiber direction is substantially vertical are indicated as 4 </ b> A, and those in the substantially horizontal direction are indicated as 4 </ b> B. That is, as shown in the drawing, the fiber sheet 4B is affixed substantially parallel to the split direction of the split part C, and the fiber sheet 4A is affixed substantially orthogonal to the split direction at a part where the degree of splitting is large. ing.
In this case, the horizontal member 5 is bonded and reinforced with high strength and flexibility by the fiber sheet 4 having excellent toughness attached to the periphery of the split portion C and the lower end surface of the horizontal member 5, A structure having excellent earthquake resistance and bending strength can be obtained. Furthermore, although the adhesive bonding / reinforcement of the side surface and the lower surface of the horizontal member 5 is shown, it is needless to say that the upper surface and corners can be bonded and reinforced.
9 shows that the fiber sheet 4A at the joint between the column 3 and the horizontal member 5 such as a beam is obtained by horizontally laying one fiber sheet 4A at the joint between the column 3 and the horizontal member 5. The fiber sheet 4 is affixed on both front and back surfaces of the joint through the upper surface of the material 5. In this case, although the junction part of the pillar 3 and the horizontal member 5 is shown, the fiber sheet 4 is affixed on junction parts, such as the pillar 3 and the base 2, for example, and the fiber sheet 4A of the base 2 which is a horizontal member is shown. Needless to say, it can be bonded and reinforced by attaching to the front and back surfaces of the joint portion through the lower surface.
What is shown in FIG. 10 is joined to the corner portion of the joint portion between the pillar 3 and the horizontal member 5 constructed at the column head of the corner of the building. Here, the fiber sheet 4A is the pillar 3 Are attached to both sides of the joint portion between the column 3 and the horizontal member 5, and the fiber sheet 4D is applied to the surface of the column 3 and the horizontal member 5 so as to be wound around the column head. In addition, these joints are also bonded and reinforced. That is, the fiber sheet 4 </ b> D has a fiber direction that is non-parallel to any of the extending directions of the pillar 3 and the horizontal member 5 in the attached fiber sheet 4.
In particular, in the structure shown in FIG. 10, the fiber sheet 4 is wound around the column head so that the joint between the column 3 and the horizontal member 5 is firmly fixed and adhesively bonded / reinforced. It is possible to accurately prevent the material 5 from being lifted or displaced.

11 shows the entire building 6 having a construction structure of building members using a fiber sheet as a joining main material in a two-by construction method, a wood panel construction method, a post-and-beam rationalization construction method, etc., and a plywood 7 for a base portion structure 1st floor wall structural plywood 8, wall middle structural plywood 9, second floor wall structural plywood 10, end wall structural plywood 11, roof structural plywood 12, floor structural plywood 13 Then, an example in which the fiber sheet is bonded and reinforced with a fiber sheet at each joint portion of the building member is shown.
As shown in FIG. 11, there is a substantially horizontal L-shaped fiber sheet 4D at the corner joint portion of the foundation 1 as one other than the above description, and the L-shaped corner portion and the internal T-shape when the foundation is viewed from above. This is an example of adhesive bonding / reinforcing of a fiber sheet to a reinforcing bar joint between foundations such as a part. It is effective for large horizontal loads in the event of an earthquake, and is also suitable for partial repair of concrete structural cracks on existing building foundations. Of course, the fiber sheet 4D can be continuously bonded and reinforced around the entire circumference of the outer periphery of the foundation. Furthermore, it is needless to say that adhesive bonding and reinforcement can be performed in the same manner with the substantially horizontal L-shaped fiber sheet 4B at the corner of the building at the upper part of the foundation.
Moreover, as another example shown in FIG. 11, the surface rigidity of the structural plywood 8, 9, 10, etc. for walls is increased, and a long fiber sheet 4E is applied to the diagonal cloth as a joint reinforcement with other building members. It is something that can be done. Furthermore, the long fiber sheet 4A from the foundation 1 to the upper end of the second-floor wall part 20 or the upper end of the end wall part 22 is applied in a substantially vertical direction, and each structural plywood and building member can be bonded and reinforced. When applying these long fiber sheets 4A and 4E, it is needless to say that not only the wall but also the roof portion 21 and the floor portions 17 and 19 can be applied.
Further, since a large pulling force is generated at both ends of the opening 14 such as a window or a garage indicated by the one-dot chain line in FIG. -It is effective to bond and reinforce with other building members by applying reinforcement and obliquely applying the fiber sheet 4F to both ends of the upper portion of the wall opening 14. Further, an example in which a total of three fiber sheets 4 are adhesively bonded and reinforced is applied to the base 1 and the base portion and the first floor wall structural plywood in FIG. These are bonded and reinforced by straddling the foundation, foundation and wall, respectively. That is, the fiber sheet 4 is affixed from the foundation 1 through the base structure plywood 7 to the first floor wall structure plywood 8 . In this figure, among the bonded fiber sheets 4, the fiber direction of the substantially vertical direction is indicated by reference numeral 4A, the substantially right-up diagonal direction is indicated by 4C1, and the substantially left-up direction is indicated by 4C2, respectively. Yes.
Here, the joint reinforcement method for the opening of a large window or garage is shown in FIGS. 20 and 21, the joint reinforcement for the floor opening is shown in FIGS. 14 and 15, and the joint reinforcement of the roof opening is shown in FIGS. 17 will be described in detail.

FIGS. 12 and 13 are detailed views showing the building member joints of the foundation, floor, and wall of the protruding corner in FIG. 11, and FIG. 12 is a structural plywood applied to a part of the base, wall, and floor. FIG. 13 shows the structure before applying the structural plywood of the wall.
In FIG. 12, the joint between the foundation 1 and the base 2, the first-floor floor 17, the first-floor wall 18, the first-floor 18, the second-floor 19, the second-floor 20, and the second-floor wall. Each of the joints at the upper end is bonded and reinforced with the fiber sheet 4 from the surface of the structural plywood 7, 8, 9, 10 and the fiber sheet 4A may be wound around the upper end of the second floor wall part such as a corner. Show. Needless to say, these sheets can be continuously bonded and reinforced by one long fiber sheet 4A. Here, a long fiber sheet 4E is applied to the diagonal cross from the surface of the structural plywood around the corner of the building and the opening where a particularly large pulling force or horizontal force is applied, or diagonally at the four corners of a single structural plywood. It is more effective to apply a plurality of fiber sheets 4F to perform adhesive bonding / reinforcing to increase the surface rigidity. In this case, of course, it can be applied not only to the wall portion but also to the floor portion and the roof portion.

In FIG. 13, the joint between the foundation 1 and the base 2, the first-floor floor 17, the first-floor wall 18, the first-floor 18, the second-floor 19, the second-floor 20, and the second-floor wall. It is also shown that each of the joints at the upper end is bonded and reinforced with a fiber sheet 4 from the surface of each constituent building member, and further, the fiber sheet 4A is wound around the upper end of the second floor wall part such as a protruding corner. Needless to say, these sheets can be continuously bonded and reinforced by one long fiber sheet 4A.
In these cases, it goes without saying that it can be applied to both side surfaces of the protruding corner portion, but it can of course be applied to the entering corner although not shown.

14 and 15 are detailed views showing the joining of each building member on the second floor in FIG. 11. FIG. 14 is a diagram in which a structural plywood is applied to a floor assembly and the like. FIG. Shown before plywood.
In FIG. 14, each joint around the opening 14 provided on the second floor 19 is bonded and reinforced from the surface of the structural plywood 13 with a fiber sheet 4 in a substantially front L shape. In addition, fiber sheets 4F are obliquely applied to the four corners of the opening 14. Furthermore, here, an example of a fiber sheet 4E that is applied to the surfaces of the substantially horizontal L-shaped fiber sheet 4B and the floor structure plywood 13 on the corners of the wall portion 18 and the floor portion 19 is shown.
In FIG. 15, each joint portion around the opening 14 provided on the second floor 19 is wound around the building member in one direction from the surface of each building member with the fiber sheet 4 </ b> A, and the other direction is the fiber sheet 4 from above in the other direction. It is bonded and reinforced in a substantially front L-shape. Furthermore, the example which gave the substantially horizontal L-shaped fiber sheet B4 to the corner | angular part of the wall part 18 and the floor part 19 is shown.
In these cases, of course, it can be applied to other openings on the second floor, but it can of course be applied to the floor and openings on the first floor, although not shown.

FIGS. 16 and 17 are detailed views showing the construction member joints of the opening 14 of the roof portion 21 and the end wall portion 22 in FIG. 11, and FIG. 16 shows structural plywoods 11 and 12 on the end wall and a part of the roof. FIG. 17 shows the structure before applying the plywoods 11 and 12 for the construction of the end walls and the roof.
In FIG. 16, each joint portion around the opening 14 provided in the roof portion 21 is bonded and reinforced from the surface of the structural plywood 12 with a fiber sheet 4 in a substantially front L shape. Furthermore, the fiber sheet 4F is diagonally given to the four corners of the opening 14. Further, the joint portions of the end wall portion 22 and the second floor wall portion 20 are bonded and reinforced by the fiber sheet 4 from the surface of the structural plywood 10 and 11. Here, there is also shown an example in which the fiber sheet 4A is wound on the upper surface of the ridge beam across the wife wall from the upper end of the second floor wall and bonded and reinforced.
In FIG. 17, each joint portion around the opening 14 provided in the roof portion 21 is wound around the building member by the fiber sheet 4A in one direction from the surface of each building member of the roof assembly, and the other direction is the fiber sheet from above. 4 is adhesively bonded and reinforced in a substantially front L-shape. Further, the joint portions of the end wall portion 22 and the second floor wall portion 20 are bonded and reinforced by the fiber sheet 4 from the surface of each building member of the wall assembly. Here, there is also shown an example in which the fiber sheet 4A is wound on the upper surface of the ridge beam across the wife wall from the upper end of the second floor wall and bonded and reinforced. Further, an example in which a total of three fiber sheets 4 are adhesively bonded and reinforced at the joint between the second-floor wall portion and the wife wall portion is shown, and the three fiber sheets 4 are respectively composed of a vertical frame, an upper frame, and a head. They are bonded and joined across the vertical frame. Among the fiber sheets 4, a fiber sheet having a substantially vertical direction is denoted by reference numeral 4 </ b> A, a substantially right-up oblique direction is denoted by 4 </ b> C <b> 1, and a substantially left-up line is denoted by 4 </ b> C <b> 2.
In these cases, of course, it can be applied to the other openings and the end wall of the second-floor roof, but it can of course be applied to the roof of the first floor although not shown.

18 and 19 are detailed views showing the building member joint portions of the roof portion 21 and the second-floor wall portion 20 in FIG. 11, and FIG. 18 is a diagram in which a structural plywood 10 is applied to a part of the wall. Is the one before applying the structural plywood 10 for walls.
In FIG. 18, each joint portion of the second-floor wall portion 20 is adhesively bonded and reinforced by winding the fiber sheet 4 </ b> G from the surface of the structural plywood 10 into the roof assembly.
In FIG. 19, each joint portion of the second-floor wall portion 20 is bonded and reinforced by winding the fiber sheet 4H around the roof assembly from the back and front surfaces of the wall assembly member.
In these cases, although not shown, it can be applied to the roof portion on the first floor. Further, although not shown in the drawing, it is of course possible to bond and reinforce the fiber sheet by winding the fiber sheet around the joint between the end wall and the roof assembly.
20 and 21 are provided with an opening 14 such as a large window or a garage shown in FIG. 11 to compensate for the shortage of the amount of the earthquake-resistant wall, to maintain the balance of the load-bearing wall of the entire building, and to prevent the building from being twisted. It is the opening frames 15 and 16, and is a detailed view showing each building member joint portion of the earthquake-resistant opening frames 15 and 16.

In FIG. 20, the longitudinal member and the transverse member are joined in a substantially front L-shape with the seismic opening frame 15 incorporated in the opening 14 such as a window, and the fiber sheet 4 is wound so that the joined portion is rigidly joined. Four substantially front L-shaped frames bonded and reinforced are combined into a front square shape with a joint fitting 23, assembled into an opening 14 of a building window, and fastened to a housing with a mounting bracket 24.
In FIG. 21, the seismic opening frame 16 incorporated in the opening 14 of the garage or the like is joined so that the longitudinal member and the transverse member are joined in a substantially front L shape to form a front gate shape, and the joint is pulled so as to be rigidly joined. What is joined by bolts 25 and further joined by fiber sheet 4 and bonded and reinforced is incorporated into opening 14 of a building garage or the like and fastened to column base metal fitting 26 by anchor bolts 27. Furthermore, it attaches to a housing with the attachment metal fitting 24. FIG. In this case, it is needless to say that adhesive bonding / reinforcement can be performed only by the fiber sheet 4 without using the metal fitting of the tension bolt 25.
In the case of reinforcing reinforcement of the frontal L-shaped portion of these seismic opening frames, although not shown in the figure, another fiber sheet 4 is further wound in the substantially vertical direction of the corners of the seismic opening frames 15 and 16, and adhesive bonding is performed. Of course, it can be reinforced. Of course, the fiber sheet 4F can also be obliquely wound and bonded and reinforced.

  22, 23, and 24 are architectural members such as columns, beams, joists, and samurai for constructing a structural frame made of engineered wood, which is often used in recent years, and FIG. 25 is plywood. is there. In these manufacturing processes, the long fiber sheet 4B is inserted into the side subjected to the tensile load when the lamina 28 is bonded and bonded, so that the lamina 28 is bonded and reinforced by the fiber sheet when a large load is applied. . Moreover, of course, the fiber sheet 4B can be stuck on the back surface of the lowest end lamina 28 as a fiber reinforcement of the building member formed by laminating the lamina 28. Accordingly, the strength against bending and deflection of the building member formed by laminating the lamina 28 can be significantly improved.

The present invention constitutes according to the joining structure of the building member using the aforementioned fiber sheet as the bonding main members, regardless of new construction and existing buildings, floor, walls, a skeleton of a building roof section such Tsubai A fiber sheet 4 made of an aramid fiber or the like not only having high strength but also excellent toughness is bonded to the surface of the building member across the joint portion of the building members made of structural plywood used in the construction method or the panel method by an adhesive. As a joining main material that is affixed and replaces the hardware, it is possible to join and reinforce the joints between these building members with high strength and flexibility. Thereby, a building structure of a building by a structural plywood having excellent seismic resistance can be obtained without causing the respective building members to be detached at a low cost during an earthquake.
Moreover, since the adhesive agent is overcoated on the surface of the fiber sheet 4 affixed to the building member, the bonding strength between the fiber sheet 4 and the building member is higher than that of the reinforcing structure simply bonded. It is greatly improved and integrated, resulting in high strength adhesive bonding and reinforcement.
Moreover, by bonding the fiber sheet 4 across a plurality of joints (FIGS. 3, 6, 7, 12, 13, 13, 14, 15, 16, 17, 18, and 19). Reference), joint portions of a plurality of building members can be bonded and reinforced by the fiber sheet 4 at once.
Further, by bonding and fixing one fiber sheet 4 to the surfaces adjacent to each other via the front and back surfaces and corners of the joint (see FIGS. 3, 7, and 10), The tensile strength can be further increased, and the bonding reliability can be greatly improved.
In particular, a single fiber sheet 4 is wound around at least one building member and bonded and reinforced (see FIGS. 9, 10, 18, 19, 20, and 21), thereby joining the building members together. It is possible to reliably prevent the part from coming out and to further improve the reliability at the joint part.
In the construction method for constructing such a joint structure, an adhesive is applied to the surface of the building member via the joint between the building members, and an aramid fiber having excellent toughness on the adhesive surface to which this adhesive is applied The fiber sheet 4 formed in the form of a sheet is pasted, and then the adhesive is applied to the surface of the fiber sheet 4 so that the fiber sheet 4 is reliably impregnated with the adhesive and reliably integrated with the building member. Therefore, it is possible to bond and reinforce the joint portion of the building member with extremely high strength and flexibility. Thereby, a mutual construction member does not come off at the time of an earthquake, and it can give the junction structure of the said structure excellent in earthquake resistance.
In addition, as shown in FIGS. 26 and 27, each cut fiber sheet, adhesive pack, and construction tool (roller, rubber spatula, etc.) that match the length of the construction site are stored in one box and set as a set product. By using this product on site, it is not necessary to mix and mix the adhesive main agent and curing agent in the field with the split clip of the adhesive storage pack, and appropriate curing and adhesion strength can be obtained. As shown in FIG. 27, the set product includes an adhesive, a fiber sheet, a roller, a rubber spatula, etc., and these are used, and the work is performed according to the construction procedure shown in FIG. Specifically, mix the two liquids of the adhesive with the pack, squeeze out to the joint, attach the fiber sheet, level the adhesive with a spatula etc. from the top of the fiber sheet, and apply the adhesive to the entire area of the joint If it is made to adapt, since the adhesive is impregnated into the fiber sheet and bonded, it can be easily bonded and reinforced. Since the fiber sheet 4 and the adhesive can be easily and reliably constructed in this way, the construction work can be greatly simplified as compared with the case of using the joint fitting, and the work cost can be reduced with a short working time. High strength adhesive bonding and reinforcement can be applied. Furthermore, there is no fear of decay due to dew condensation in the wall due to heat bridges when using metal fittings, or lack of insulation or deterioration of insulation when a heat insulating material is applied. Further, it is possible to flexibly bond and reinforce the split fracture at the nail and the mounting bracket (bolts, etc.), which is a defect of the wooden building member, with the fiber sheet.
From the above, it can be said that the industrial applicability is great.

It is a perspective view of the junction part explaining the junction structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a perspective view of the other junction part explaining the joining structure of the building member of embodiment of this invention. It is a figure explaining the set goods used for construction implementation of this invention. It is a figure explaining the content of the set goods used for construction implementation of this invention. It is an enlarged figure explaining the adhesive agent of the set goods used for construction implementation of this invention. It is a figure explaining the construction procedure outline with the set goods used for construction implementation of the present invention.

Claims (2)

It is a construction structure of building members that use a fiber sheet as a joining main material to bond and reinforce the building members that constitute the frame of a wooden building,
The building members to be joined are structural plywood used in a two-by method or a panel method,
A fiber sheet in which fibers having high tensile strength are formed into a sheet shape across the joints between the frame materials before construction of the structural plywood and the surfaces of the structural plywood after construction are adhesives A construction structure for a building member using a fiber sheet as a joining main material, wherein the fiber sheet is further coated with an adhesive on the surface of the fiber sheet. The structural plywood consists of a wall structural plywood and a floor structural plywood,
The fiber sheet is bonded in a substantially horizontal L-shape along a corner that forms a building corner joint where the wall made of the plywood for wall structure and the floor made of the plywood for floor structure are joined. A joining structure of building members using the fiber sheet according to claim 1 as a joining main material.

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