JP3102245U - Construction structure of building members using fiber sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable building member joining structure that can be easily joined and reinforced at low cost.
SOLUTION: An adhesive is applied to the surface of a building member through a joint portion between building members constituting a building frame such as a foundation 1, a base 2, a pillar 3, a bracing 6 and the like, and the adhesive is applied. A fiber sheet 4 in which fibers having high tensile strength and excellent toughness are formed into a sheet shape is attached to the bonding surface, and then the adhesive is applied to the fiber sheet 4 by applying an adhesive to the surface of the fiber sheet 4. Ensure impregnation and integration with building components.
[Selection] FIG.

Description

  The present invention relates to a construction structure for building members that joins and reinforces each building member constituting a frame of a wooden building using a fiber sheet.

The collapse of buildings due to earthquakes, etc. is caused by damage to the building components themselves or the joints between the building members that make up the building's enclosure. For this reason, in particular, the earthquake resistance and durability performance of existing wooden buildings Improvement has become a major social problem.
Therefore, in recent years, since the Great Hanshin Earthquake, major building materials have been joined together using special hardware for earthquake resistance. Especially in new construction of houses, legally, such as earthquake resistance and durability. Therefore, the diameter of the pillar is thickened, a highly durable tree species is used, special hardware is used for bracing and firing, and structural plywood that increases surface rigidity is used to increase the strength of walls and floors. It has been done to raise.

  However, in the joining structure as described above, since the special hardware used for the joining is large and complicated, there is a problem that it requires a lot of labor for its installation work, For attachment to a building, for example, attention must be paid to the engagement with reinforcing materials such as studs, building materials, and base body edges. In addition, in the interaction between hardware, wood, and foundation concrete, the method of attaching the hardware is complicated, requiring time and labor for the construction work, resulting in an increase in cost.

Furthermore, the joint hardware used in the newly constructed building has a problem that the joint strength is drastically lowered due to the thinning of the building member or the splitting fracture of the wood due to excessive stress. In addition, a new piece of wood is lost due to the installation of hardware, resulting in a decrease in yield strength, and in the case of extension and renovation, there is a decline in yield strength resulting from the decay of existing parts. There was a problem.
In addition, in the case of this type of joint fitting, there is also a problem of corrosion due to salt damage or the like.
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, fibers are actively used as reinforcement materials for public roads, railway viaduct columns, reinforced concrete building columns, beams, slabs, walls, tunnel walls, etc. At present, it has not been used for goods.

  This invention has been made in view of the above circumstances, and it is extremely easy and low by making use of the characteristics of a reinforcing material made of fibers formed from high tensile strength fibers such as aramid fibers, carbon fibers, and glass fibers. An object of the present invention is to provide a highly reliable building member bonding structure that can be bonded and reinforced at low cost.

  In order to solve the above-mentioned problem, the joint structure of building members according to claim 1 is a joint structure that joins building members that constitute a frame of a wooden building, and the joint member is bonded to the surface of the building member. A fiber sheet in which fibers having high tensile strength are formed in a sheet shape across the portion is bonded with an adhesive, and the adhesive is overcoated on the surface of the fiber sheet.

In this way, on the surface of the building member straddling the joint part of the building members constituting the building frame of the building such as foundation, foundation, pillar, horizontal member, bracing, etc., not only high tensile strength but also toughness Since the fiber sheet which consists of the outstanding aramid fiber, carbon fiber, glass fiber, etc. is affixed with the adhesive agent, the junction part of these building members can be reinforced with high intensity | strength flexibly. Thereby, it can be set as the structure excellent in earthquake resistance without a mutual construction member not coming off at the time of an earthquake at low cost.
Moreover, since the adhesive is overcoated on the surface of the fiber sheet affixed to the building member, the bond strength between the fiber sheet and the building member is greatly improved compared to a structure in which the fiber sheet is simply bonded. Integration is achieved with high strength reinforcement.

  The building member bonding structure according to claim 2 is characterized in that, in the building member bonding structure according to claim 1, the fiber sheet is bonded and pasted across a plurality of bonding portions. .

  That is, since the fiber sheet is bonded across the plurality of joint portions, the joint portions of the plurality of building members can be reinforced with the fiber sheet all together.

  The building member bonding structure according to claim 3 is the building member bonding structure according to claim 1 or 2, wherein the fiber sheet is bonded and pasted to a plurality of surfaces of the bonding portion. It is characterized by.

  That is, since the fiber sheet is bonded and fixed to a plurality of surfaces of the joint portion, the reinforcement strength at the joint portion can be further increased, and the reliability of reinforcement can be greatly improved.

  The building member bonding structure according to claim 4 is the building member bonding structure according to claim 3, wherein one of the fiber sheets is wound around the outer periphery of one building member and adhered to both surfaces of the bonding portion. It is characterized by being pasted.

  In this way, since one fiber sheet bonded to the front and back of the joint is wound around one building member, it is reliably prevented from coming out at the joint between the building members, and the joint is more reliable. Can be increased.

  The building member bonding structure according to claim 5 is the building member bonding structure according to claim 3, wherein one piece of the fiber sheet is bonded and pasted over adjacent surfaces of the bonding portion. It is characterized by.

  In this way, since one fiber sheet is adhered and pasted to the mutually adjacent surfaces such as the corners of the joint portion, the reinforcing strength at the joint portion between the building members can be further increased, and the reinforcement Reliability can be greatly improved.

According to the construction structure for building members of the present invention, the following effects can be obtained.
According to the joint structure of building members according to claim 1, on the surface of the building member straddling the joint portion of the building members constituting the frame of the building such as foundation, foundation, pillar, horizontal member, bracing, etc. Since a fiber sheet made of aramid fiber, carbon fiber, glass fiber, etc. that not only has high tensile strength but also has excellent toughness is attached with an adhesive, the joints between these building members are highly strong and flexible. Can be reinforced. Thereby, it can be set as the structure excellent in earthquake resistance without a mutual construction member not coming off at the time of an earthquake at low cost.
Moreover, since the adhesive is overcoated on the surface of the fiber sheet affixed to the building member, the bond strength between the fiber sheet and the building member is greatly improved compared to a structure in which the fiber sheet is simply bonded. Integration is achieved with high strength reinforcement.

  According to the joint structure for building members according to claim 2, since the fiber sheet is bonded across the plurality of joint portions, the joint portions of the plurality of building members can be reinforced together with the fiber sheet. .

  According to the joint structure for building members according to claim 3, since the fiber sheets are bonded and fixed to a plurality of surfaces of the joint portion, the reinforcement strength at the joint portion can be further increased, and the reliability of the reinforcement is greatly increased. Can be improved.

  According to the joint structure for building members according to claim 4, since the single fiber sheet bonded to the front and back of the joint portion is wound around one of the building members, the disconnection at the joint portion between the building members is ensured. Therefore, the reliability can be further improved at the joint.

  According to the joint structure for building members according to claim 5, since one fiber sheet is adhered and pasted to adjacent surfaces such as corners of the joint portion, reinforcement at the joint portion between the building members The strength can be further increased, and the reliability of reinforcement can be greatly improved.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a construction structure for building members according to the present invention will be described below with reference to the drawings.

(Reinforcement of joint between base and column)
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 with an adhesive. In this case, the base 2 and the pillar 3 are joined, but it is needless to say that the base 1 and the base 1 can be joined.

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. It is pasted for a length dimension of about 100 mm or more.
The fiber sheet 4 bonded with an adhesive is coated with an adhesive on the surface thereof.

Next, the case where this joining structure is constructed will be described.
As the adhesive used here, it is preferable to use a two-component adhesive that starts curing by mixing two kinds of solvents, such as an epoxy-based 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 that can divide the containing portion inside. That is, an appropriate amount of solvent is accommodated in each of the accommodating portions divided into two by the clip, and then the clips are removed and the mutual accommodating portions are communicated to mix the solvents with each other to 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.

  Thus, by bonding the fiber sheet 4 with an adhesive, the joint portion between the base 2 and the column 3 is reinforced with high strength and flexibility by the fiber sheet 4 having excellent toughness.

In this case as well, the joint portion is reinforced with high strength and flexibility by the fiber sheet 4 having excellent toughness attached to the joint portion with an adhesive, whereby the base 2 and the pillar 3 are detached during an earthquake. There is no such thing and it can be set as the structure excellent in earthquake resistance.
In the above example, the fiber sheet 4 is pasted only on one side of the joint between the base 2 and the pillar 3, but the fiber sheet 4 is pasted on both sides to reinforce it with higher strength. Of course you can.

2 shows that the fiber sheet 4 is attached to both the front and back surfaces of the joint portion between the base 2 and the pillar 3. Further, in this example, one fiber sheet 4 is attached to the bottom surface of the base 2. Is attached to both sides of the joint.
And it can reinforce in still higher intensity | strength by sticking the fiber sheet 4 on both surfaces of a junction part through the bottom face of the base 2 in this way.

Note that the reinforcement at the joint between the base 2 and the pillar 3 may be applied to the corner of the building as shown in FIG. 3. In this case, one side is provided on each side of the corner of the joint. 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 joining can be performed including the foundation 1.

Next, other joining structures will be described in order.
(Reinforcement of joint between foundation and foundation and foundation and column)
What is shown in FIG. 4 is a fiber sheet 4 that collectively reinforces a joint portion in which a foundation 1, a base 2, a pillar 3, and a horizontal member 5 such as a large draw are joined together. As shown in the figure, the intermediate portion of the fiber sheet 4 is twisted and thinned to avoid overdrawing as the horizontal member 5. The fiber sheet 4 is bonded and bonded to the foundation 1 and the base 2 and the other side to the pillar 3 with the twisted portion 4t, which is a thinned portion, as a boundary. That is, the fiber sheet 4 is bonded from the foundation 1 to the pillar 3 through the base 2.

  In this case as well, the fiber sheet 4 having excellent toughness attached to the joint portion by the adhesive becomes an integral reinforcement including the foundation 1, the earthquake resistance is increased, the strength is flexibly reinforced, and the earthquake resistance. It can be set as the structure excellent in property.

(Reinforcement of joints between columns and beams, waistline, horizontal members such as girders)
The one shown in FIG. 5 is obtained by reinforcing the joint portion between the column 3 and the horizontal member 5 such as a trunk difference or a girder by the fiber sheet 4, and the one shown in FIG. Are reinforced by one fiber sheet 4 each.
Also in this case, the joint portion is reinforced with high strength and flexibility by the fiber sheet 4 having excellent toughness attached to the joint portion with an adhesive, and a structure having excellent earthquake resistance can be obtained.

(Reinforcement of joints between columns and beams between upper and lower floors, trunk differences, horizontal members such as girders)
In the structure shown in FIG. 7, the fiber sheet 4 reinforces the joint between the upper and lower floor pillars 3 and the horizontal member 5 such as a trunk difference.

  And what is shown in FIG. 8 reinforce | strengthened collectively the joint part to which the pillar 3 of the upper and lower floors and horizontal members 5, such as a trunk difference and a connecting beam, were integrally joined by the fiber sheet 4. FIG. As shown in the figure, the intermediate portion of the fiber sheet 4 is thinned in a rope shape by twisting or weaving to avoid a connecting beam as the horizontal member 5. In this way, with the rope portion 4r being a rope-shaped part as a boundary, each side 3 of the fiber sheet 4 is wound on the lower floor pillar 3 and the other side is wound on the upper floor pillar 3 so that each pillar 3 is wound. It is adhesively bonded. In other words, the joint portion between the upper and lower floor pillars 3 and the horizontal member 5 is reinforced by the fiber sheet 4.

  Further, what is shown in FIG. 9 is one in which the corners of the joint between the upper and lower floor pillars 3 and the horizontal member 5 are reinforced by a total of three fiber sheets 4. In FIG. 9, 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, 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.

  Also in this case, the joint portion is reinforced with high strength and flexibility by the fiber sheet 4 having excellent toughness attached to the joint portion with an adhesive, and a structure having excellent earthquake resistance can be obtained.

(Reinforcement of joints between horizontal members such as foundations, beams and trunk differences)
The one shown in FIG. 10 is the one in which the fiber sheet 4 is affixed to the side face of the joint (joint) between the horizontal members 5 such as the base, the beam, and the trunk difference, and is particularly shown in FIG. Is a reinforcement of the joint, which is a joint between the horizontal members 5 made of beams. And also in this case, the joint part is reinforced with high strength and flexibility by the fiber sheet 4 excellent in toughness attached to the joint part by an adhesive, and has a structure excellent in earthquake resistance and bending strength. be able to.
In this case, side surface reinforcement is shown, but it is needless to say that both side surfaces and upper and lower surfaces can be reinforced.
In addition, as a structure of this junction part, it is a hook joint, and the upper side is a tenon groove fitting having a tenon 21 and a groove 22, but it can of course be reinforced to other joints. .

(Join and reinforce splitting parts of horizontal members such as beams and trunk differences)
The fiber sheet 4 shown in FIG. 12 is bonded and reinforced around the split portion C generated on the side surface of the horizontal member 5 such as a beam and a trunk difference, and the lower end surface of the horizontal member 5 Further, the 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. 12, among the attached fiber sheets 4, those in which the fiber direction is substantially vertical are denoted by reference numeral 4 </ b> A, and those in the substantially horizontal direction are denoted by reference numeral 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.

Also 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.
In this case, the side surface and the lower surface of the horizontal member 5 are joined and reinforced, but it is needless to say that the upper surface and corners can be joined and reinforced.

(Reinforcement at joints of braces)
The thing shown in FIGS. 13-17 reinforces the junction part of the bracing 6 with the fiber sheet 4. FIG. In these drawings, the attached fiber sheet 4 is shown as a reference numeral 4A in which the fiber direction is substantially vertical, and as a reference sign 4C in which the fiber direction is substantially parallel to the extending direction of the bracing 6. .

  The bracing 6 shown in FIG. 13 is joined to the corner of the joint between the base 2 and the pillar 3 on the foundation 1, and the fiber sheet 4C is joined to the base 2 and the pillar 3 from the surface of the brace 6. Affixed over the surface of the part. In addition, here, the fiber sheet 4A is also affixed to the joint portion of the foundation 1, the base 2, and the pillar 3, and the joint portion is also reinforced.

  The bracing 6 shown in FIG. 14 is joined to the corner of the joint between the base 2 and the pillar 3 on the foundation 1 constructed at the corner of the building, and the fiber sheet 4C is It is affixed over the surface of the junction part of the base 2 and the pillar 3 from the surface. In addition, here, the fiber sheets 4A are attached one by one to two surfaces adjacent to each other via corners, that is, both side surfaces of the foundation 1, the base 2 and the pillar 3, and reinforcement of the joint portion. Is also given.

  The bracing 6 shown in FIG. 15 is joined to the corner of the joint between the pillar 3 and the horizontal member 5 such as a trunk difference or a girder, and the fiber sheet 4C is connected to the pillar 3 from the surface of the bracing 6. It is affixed over the surface of the joint part of the horizontal member 5. Further, here, fiber sheets are pasted on both the front and back surfaces at the joint portion between the pillar 3 and the horizontal member 5, and in this example, one fiber sheet 4C is passed through the upper surface of the horizontal member 5. Affixed to both sides of the joint.

  The struts 6 shown in FIG. 16 are constructed at the corners of the building at the corners between the upper floor pillar 3 and the horizontal member 5 at the joint between the upper floor pillar 3 and the horizontal member 5, In addition, the fiber sheet 4C is bonded from the surface of the bracing 6 to the surface of the joint between the pillar 3 and the horizontal member 5, respectively. It is attached. In addition, here, the fiber sheets 4A are attached one by one to both side surfaces of the joint portion between the upper and lower columns 3 and the horizontal member 5, and the joint portion is also reinforced.

  Furthermore, the bracing 6 shown in FIG. 17 is joined to the corner of the joint between the pillar 3 and the horizontal member 5 constructed at the column head of the corner of the building, and the fiber sheet 4C is bracing. It is affixed over the surface of the junction part of the pillar 3 and the horizontal member 5 from the surface of 6. In addition, here, the fiber sheet 4A is affixed to each side surface of the joint portion between the column 3 and the horizontal member 5 one by one, and the fiber sheet 4D is wound around the column head, Affixed over the surfaces of the pillars 3 and the horizontal members 5, the joints are also 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.

Also in these cases, the joint portion is reinforced with high strength and flexibility by the fiber sheet 4 having excellent toughness attached to the joint portion with an adhesive, and a structure having excellent earthquake resistance can be obtained.
In particular, in the structure shown in FIG. 17, 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 reinforced. It is possible to accurately prevent the occurrence of lifting or shifting.

  As described above, according to the above-described reinforcing structure, straddling the joints between the building members constituting the building frame such as the foundation 1, the base 2, the pillar 3, the horizontal member 5, the bracing 6 and the like. Since the fiber sheet 4 made of aramid fibers or the like that is not only high in strength but also excellent in toughness is attached to the surface of the building member with an adhesive, the joint portion between these building members is highly strong and flexible. Can be reinforced. Thereby, it can be set as the structure excellent in earthquake resistance without a mutual construction member not coming off at the time of an earthquake at low cost.

  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 significantly higher than the structure simply bonded. It is improved and integrated, resulting in high strength reinforcement.

  Moreover, by adhering the fiber sheet 4 across a plurality of joints (see FIGS. 4, 7, 8, 9, 13, 14, 16, and 17), a plurality of building members The joints can be reinforced by the fiber sheet 4 collectively.

  Furthermore, by bonding and fixing a single fiber sheet 4 to the surfaces adjacent to each other via the front and back surfaces and corners of the joint (see FIGS. 2, 9, 16, and 17), the joint In addition, the reinforcing strength can be further increased, and the reliability of joining can be greatly improved.

  In particular, by winding a single fiber sheet 4 around at least one building member (see FIGS. 2, 4, 8, 15, and 17), it is possible to reliably prevent the building member from coming out at the joint. Further, the reliability can be further improved at the joint.

  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 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, since the construction is performed with the fiber sheet 4 and the adhesive, the construction work can be greatly simplified as compared with the case of using the reinforcing metal fitting, and the strength is high at a low cost in a short working time. Reinforcement can be applied.

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.

Explanation of symbols

1 foundation (building materials)
2 foundation (building materials)
3 pillars (building materials)
4, 4A, 4B, 4C, 4D Fiber sheet 5 Horizontal material (building material)
6 bracing (building materials)

Claims (5)

It is a joining structure that joins building members that constitute the frame of a wooden building,
A fiber sheet in which fibers having high tensile strength are formed into a sheet shape across the joint portion on the surface of the building member is bonded with an adhesive, and further, the adhesive is overcoated on the surface of the fiber sheet. A construction structure for building members, characterized in that   2. The construction structure for building members according to claim 1, wherein the fiber sheet is bonded and pasted across a plurality of joints.   The said fiber sheet is adhere | attached and stuck on the several surface of the said junction part, The joining structure of the building member of Claim 1 or Claim 2 characterized by the above-mentioned.   4. The joint structure for building members according to claim 3, wherein the one fiber sheet is wound around the outer periphery of one building member and adhered and bonded to both surfaces of the joint portion. 4. The construction structure for bonding building members according to claim 3, wherein the one fiber sheet is bonded and pasted over adjacent surfaces of the joint portion.

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