JP3903314B2 - Repair and reinforcement method for long wooden members - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to repair and reinforcement of a long wooden member such as a wooden beam or a wooden pillar, and particularly relates to a method for repairing and reinforcing a long wooden member using a fiber reinforced sheet.
[0002]
[Prior art]
A conventional method for repairing and reinforcing a long wooden member uses a first sheet-like high-strength long fiber and a second sheet-like high-strength long fiber. The first sheet-like high-strength long fibers are superimposed on the lower surface of the beam 1 along the axial direction, and both end portions of the first sheet-like high-strength fibers are fixed as fixing sections via an adhesive, and the intermediate portion is It is fixed as a reinforcing section without being fixed to the beam. The second sheet-like high-strength long fiber is bonded to the first sheet-like high-strength long fiber from the side of the beam so as to be superimposed on the first sheet-like high-strength long fiber in the reinforcing section. Affixed with. Thereby, the bending moment applied to the beam is received by the tensile resistance of the second sheet-like high-strength long fiber on the side surface of the beam in addition to the bending strength of the beam itself and the tensile resistance of the first sheet-like high-strength long fiber on the lower surface of the beam. (For example, refer to Patent Document 1).
[0003]
[Patent Document 1]
Japanese Examined Patent Publication No. 4-77104 [0004]
[Problems to be solved by the invention]
However, in the above-described conventional method for repairing and reinforcing a long wooden member, the second sheet-like high-strength long fiber is applied from the side surface of the beam to the first sheet-like high-strength long fiber, and is provided over the upper surface of the beam. Absent. As a result, the second sheet-like high-strength long fiber may not be able to obtain sufficient tensile resistance that can bear the bending moment applied to the beam.
[0005]
The reason why the second sheet-like high-strength long fibers are not provided on the upper surface of the beam is considered to be that an orthogonal beam orthogonal to the beam exists on the upper surface of the beam. A relatively large bending moment is applied to the portion of the beam immediately below the perpendicular beam, and the portion to be reinforced is likely to crack. Thus, conventionally, since the second sheet-like high-strength long fibers are not provided on the upper surface of the beam due to the presence of the orthogonal beam, the bending moment applied to the beam is sufficient despite the portion to be reinforced. A tensile resistance will not be obtained.
[0006]
Further, long members such as wooden beams and wooden pillars are squeezed or swollen in the direction perpendicular to the fiber direction due to aging or compressive force in the fiber direction (longitudinal direction). However, conventionally, the second sheet-like high-strength long fiber is stuck only from the side surface of the beam to the first sheet-like high-strength long fiber and is not arranged in the direction perpendicular to the fiber direction of the beam. Is difficult to prevent.
[0007]
In view of the above circumstances, the present invention provides a method for repairing and reinforcing a long wooden member capable of obtaining a sufficient tensile resistance capable of bearing a bending moment and preventing the perpendicular or bulging of the fiber direction. With the goal.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a method for repairing and reinforcing a long wooden member according to claim 1 of the present invention is the method of repairing and reinforcing a first fiber reinforced sheet along the fiber direction of the long wooden member. A step of affixing to one side, a second fiber reinforced sheet overlaid on the first fiber reinforced sheet, and both ends from one side of the wooden long member to the other side in the fiber direction of the wooden long member While crossing diagonally and winding and sticking, another second fiber reinforced sheet is alternately overlapped on the second fiber reinforced sheet by hanging both ends from one side of the long wooden member to the other side. A step of affixing, a step of overlapping a third fiber reinforced sheet on the first fiber reinforced sheet and the second fiber reinforced sheet, directing in a fiber direction of the long wooden member, and affixing by winding It is characterized by including.
[0009]
According to this invention, since the second fiber reinforced sheet is affixed obliquely intersecting the fiber direction of the long wooden member, the bending moment and the shearing force applied to the fiber direction of the long wooden member are handled. In addition, since the third fiber reinforced sheet is wound and pasted in a direction perpendicular to the fiber direction of the long wooden member, it is possible to prevent the long wooden member from swelling or bulging in the fiber direction.
[0010]
In the method for repairing and reinforcing a long wooden member according to claim 2 of the present invention, the first fiber reinforced sheet covers the crack portion generated in the long wooden member along the fiber direction of the long wooden member. A step of attaching the second fiber reinforced sheet to the first fiber reinforced sheet, and the both ends of the wooden long member from the position of the cracked portion are hung on the opposite sides of the cracked portion. A step of winding and pasting diagonally crossing the fiber direction of the length member, and a third fiber reinforced sheet overlaid on the first fiber reinforced sheet and the second fiber reinforced sheet, the wooden long member And a step of directing in the fiber direction and winding and pasting.
[0011]
According to the present invention, since the second fiber reinforced sheet is affixed obliquely intersecting the fiber direction of the long wooden member from the position of the broken portion, the bending moment applied to the broken portion generated in the long wooden member and Shearing force is accepted. In addition, since the third fiber reinforced sheet is wound and pasted in a direction perpendicular to the fiber direction of the long wooden member, it is possible to prevent the long wooden member from swelling or bulging in the fiber direction.
[0012]
A method for repairing and reinforcing a long wooden member according to claim 3 of the present invention includes a step of providing a groove crossing a crack generated in the long wooden member and embedding the reinforcing member in the groove, A step of covering and attaching a fiber reinforced sheet covering a cracked portion of the long wooden member along the fiber direction of the long wooden member, and a second fiber reinforced sheet superimposed on the first fiber reinforced sheet. A step of hooking both ends from the position of the cracked portion of the long member to the opposite sides of the cracked portion, winding and pasting diagonally in the fiber direction of the wooden long member, and third fiber reinforcement And a step of stacking the sheet on the first fiber reinforced sheet and the second fiber reinforced sheet, and winding and pasting the sheet in the fiber direction of the long wooden member.
[0013]
According to this invention, since the reinforcing member is embedded in the groove crossing the crack generated in the long wooden member, the crack can be more reliably reinforced.
[0014]
According to a fourth aspect of the present invention, there is provided a method for repairing and reinforcing a long wooden member, comprising a step of embedding a reinforcing member in the groove by providing a groove that crosses a crack generated in the long wooden member; A step of filling the cracked portion generated in the long member with a filler, a step of applying a primer to the outer periphery of the wooden long member, a step of smoothing the putty agent on the outer periphery of the wooden long member, A step of covering the first fiber reinforced sheet along the fiber direction of the long wooden member and covering the cracked portion of the long wooden member, and a second fiber reinforced sheet superimposed on the first fiber reinforced sheet A step of hanging the both ends of the wooden long member from the position of the cracked portion on opposite sides of the cracked portion, winding and pasting diagonally in the fiber direction of the wooden long member, and third, The fiber reinforced sheet of the first fiber reinforced sheet and the second fiber reinforced sheet Characterized in that it comprises a step of overlapping the sheets paste wound in orthogonal to the fiber direction of the wooden elongated member.
[0015]
According to this invention, it is easy to repair a long wooden member with a primer, and the pasting of each fiber reinforced sheet is made good with a putty agent.
[0016]
According to a fifth aspect of the present invention, there is provided a method for repairing and reinforcing a long wooden member according to any one of the second to fourth aspects, wherein the second fiber reinforced sheet is substantially aligned in the direction in which the crack portion is generated. It sticks so that it may orthogonally cross.
[0017]
According to this invention, since the 2nd fiber reinforced sheet is substantially orthogonal to the state of a crack part, reinforcement according to the state of a shear crack part can be performed suitably.
[0018]
According to a sixth aspect of the present invention, there is provided a method for repairing and reinforcing a long wooden member according to any one of the second to fourth aspects, wherein the second fiber reinforced sheet is overlapped with the first fiber reinforced sheet. The two ends of the long wooden member from the position of the cracked portion are hung on the opposite sides of the cracked portion, crossed obliquely in the fiber direction of the long wooden member, and then wound and pasted. Including a step of attaching the two fiber reinforced sheets to the second fiber reinforced sheets alternately by hanging both ends from the position of the cracked portion of the long wooden member on opposite sides of the cracked portion. And
[0019]
According to this invention, the second fiber reinforced sheet and the second fiber reinforced sheet separate from each other are used as a stake in the position of the cracked portion, and sufficiently handle the bending moment applied to the cracked portion generated in the long wooden member.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a method for repairing and reinforcing a long wooden member according to the present invention will be described below with reference to the accompanying drawings. Fig.1 (a) thru | or FIG.1 (f) are the figures which show the procedure of the repair reinforcement method of the wooden elongate member in this Embodiment.
[0021]
The method for repairing and reinforcing a long wooden member of the present embodiment is a method for repairing and reinforcing a long wooden member such as a wooden beam, a wooden pillar, or a wooden frame. . Moreover, in embodiment described below, a wooden beam is demonstrated as an example as a wooden elongate member.
[0022]
As shown to Fig.1 (a), the weight of the roof containing a roof foundation | substrate or a roof structure is applied to the wooden beam 1. FIG. For this reason, the crack 2 is often generated on the lower side of the wooden beam 1 due to the bending moment generated in the direction of arrow A in FIG. Therefore, the crack 2 is repaired and the wooden beam 1 is reinforced as follows.
[0023]
First, as shown in FIG. 1A, the cracking portion 2 is filled with a filler 3 such as an epoxy resin.
[0024]
Next, as shown in FIG. 1B, the filler 3 protruding from the crack 2 is cleaned, and the primer 4 is applied to the outer periphery of the wooden beam 1. Then, after the primer 4 is cured by finger touch, a putty agent 5 such as an epoxy putty is leveled smoothly on the outer periphery of the wooden beam 1. In addition, when the wooden beam 1 is made of a material that undergoes drying shrinkage after repairing, it is conceivable that cracking may occur due to restraint by a fiber-reinforced sheet described later that reinforces the peripheral surface of the wooden beam 1. In this case, it is preferable to use a water-absorbing / repellent material or a material having some elasticity as the primer 4.
[0025]
Next, as shown in FIG. 1 (c), after the putty agent 5 is cured, the lower side of the wooden beam 1 and in the fiber direction (longitudinal direction) of the wooden beam 1 so as to cover the crack 2. The 1st fiber reinforced sheet 6 is stuck along.
[0026]
The first fiber reinforced sheet 6 is made of carbon fiber, glass fiber, vinylon fiber, aramid fiber, or the like, and can be formed into a sheet shape with its fiber direction oriented vertically and horizontally. The main fiber direction coincides with the long side direction of the fiber reinforced sheet. Further, when the first fiber reinforced sheet 6 is attached, an adhesive made of an epoxy resin or the like is applied to the attachment portion. Thereafter, the first fiber reinforced sheet 6 is pressed with a laminating roller or the like to impregnate the first fiber reinforced sheet 6 with the adhesive. Thus, the 1st fiber reinforced sheet 6 affixed is affixed in multiple layers. As an example, four layers each having a weight of 300 g / m ² and a width of 500 mm are laminated and pasted. The dimensions, the number of overlaps, and the like can be appropriately changed depending on the stress state on the wooden beam 1, the degree of damage to the wooden beam 1, and the size of the wooden beam 1.
[0027]
Next, after curing of the adhesive for attaching the first fiber reinforced sheet 6, the wooden beam 1 is hung from the position of the cracked portion 2 on the lower side of the wooden beam 1 to the side opposite to the cracked portion 2. The second fiber reinforced sheet 7 is wound so as to cross obliquely in the fiber direction (longitudinal direction). The second fiber reinforced sheet 7 is formed in the same manner as the first fiber reinforced sheet 6 and is attached with an adhesive in the same manner as the first fiber reinforced sheet 7.
[0028]
Subsequently, the second fiber reinforced sheet 7 is pasted as described above, and another second fiber reinforced sheet 7 ′ is hung from the position of the crack portion 2 of the wooden beam 1 to the side opposite to the crack portion 2. Then, the second fiber reinforced sheets 7 are alternately stacked and pasted. That is, the second fiber reinforced sheets 7 and 7 ′ are overlapped at the position of the cracked portion 2 and pasted in the manner of tapping. In addition, the second fiber reinforced sheets 7 and 7 ′ are laminated and pasted at the position of the crack portion 2 to be overlaid. Further, the second fiber reinforced sheet 7 and the other second fiber reinforced sheet 7 ′ are pasted by superposing their ends on the upper side of the wooden beam 1. In this embodiment, this superposed portion is 200 mm, for example. The dimensions, the number of overlaps, and the like can be appropriately changed depending on the stress state on the wooden beam 1, the degree of damage to the wooden beam 1, and the size of the wooden beam 1.
[0029]
In addition, the 2nd fiber reinforced sheet 7 is good to affix according to the state of the crack part 2. FIG. Specifically, as shown in FIG. 2, when the crack 2 occurs obliquely with respect to the fiber direction (longitudinal direction) of the wooden beam 1 due to the shearing force on the wooden beam 1, the second fiber reinforced sheet 7. Is pasted so as to be substantially perpendicular to the direction in which the cracked portion 2 occurs, and this is pasted in multiple layers. That is, another second fiber reinforced sheet 7 'is not used and is not struck.
[0030]
Next, after curing of the adhesive to which the second fiber reinforced sheets 7 and 7 'are attached, the third fiber reinforced sheet is stacked on the first fiber reinforced sheet 6 and the second fiber reinforced sheets 7 and 7'. 8 is wound in the fiber direction (longitudinal direction) of the wooden beam 1 and wound and pasted. The second fiber reinforced sheet 7 is formed in the same manner as the first fiber reinforced sheet 6 and is attached with an adhesive in the same manner as the first fiber reinforced sheet 7. Also, the third fiber reinforced sheet 8 is pasted by being polymerized at the upper ends of the wooden beam 1 at both ends thereof. In this embodiment, this superposed portion is 200 mm, for example. Further, the third fiber reinforced sheet 8 attached as described above is attached in a multilayer (for example, four layers) overlapping. The dimensions, the number of overlaps, and the like can be appropriately changed depending on the stress state on the wooden beam 1, the degree of damage to the wooden beam 1, and the size of the wooden beam 1.
[0031]
In addition, when the 3rd fiber reinforced sheet 8 is laminated | stacked and laminated | stacked on multiple layers, it adjoins and pastes an edge part, without mutually adjoining the 1st layer. Then, the second layer is pasted so as to cover the attachment portion. Further, the third and subsequent layers are also pasted in the same manner with the position of the attachment portion shifted from the other layers. It is preferable that the third fiber reinforced sheet 8 is laminated and laminated in this manner. The dimensions, the number of overlaps, and the like can be appropriately changed depending on the stress state on the wooden beam 1, the degree of damage to the wooden beam 1, and the size of the wooden beam 1.
[0032]
Therefore, in the above-described method for repairing and reinforcing a long wooden member, the second fiber reinforced sheets 7 and 7 ′ are pasted so as to cross the fiber direction of the wooden beam 1. This makes it possible to obtain a tensile resistance that can bear the bending moment in the direction of arrow A in FIG. The second fiber reinforced sheets 7 and 7 ′ are alternately overlapped and pasted at the position of the crack portion 2 of the wooden beam 1, and are struck. Thereby, sufficient tensile resistance which can bear the bending moment and shearing force concerning the crack part 2 is obtained.
[0033]
Further, the second fiber reinforced sheets 7 and 7 ′ are pasted so as to cross the fiber direction of the wooden beam 1. Thereby, as shown in FIG. 4, even if the orthogonal beam 11 exists on the upper side of the wooden beam 1, the second fiber reinforced sheets 7 and 7 'can be pasted so as to avoid the orthogonal beam 11. Is possible. That is, it is possible to repair and reinforce the portion of the wooden beam 1 directly below the orthogonal beam 11 to which a relatively large bending moment is applied.
[0034]
In addition, when the second fiber reinforced sheet 7 is attached so as to be substantially perpendicular to the direction in which the cracked portion 2 occurs without using another second fiber reinforced sheet 7 '(see FIG. 2), the shear cracked portion It is possible to reinforce appropriately according to the state in which 2 occurs.
[0035]
In the above-described method for repairing and reinforcing a long wooden member, the third fiber reinforced sheet 8 is wound and pasted in a direction perpendicular to the fiber direction (longitudinal direction) of the wooden beam 1. As a result, even if stagnation or swelling occurs in the direction perpendicular to the fiber direction of the wooden beam 1 due to aging or compressive force in the fiber direction (longitudinal direction), the third fiber reinforced sheet 8 prevents swell or swelling. Is possible.
[0036]
By the way, before filling the crack 2 with the filler 3 such as epoxy resin in FIG. 1A, as shown in FIG. 3, the wooden beam 1 is provided with a groove 9 crossing the crack 2 and this groove is formed. The reinforcing member 10 may be embedded in the inside 9. The reinforcing member 10 includes a reinforcing bar, a steel wire, a strand, a carbon fiber, an aramid fiber, a bundle of glass fibers, and the like. For embedding the reinforcing member 10 in the groove 9, a filler 3 (such as an adhesive) such as an epoxy resin filling the crack 2 is used. Thus, by providing the reinforcing member 10, the cracked portion 2 can be more reliably reinforced.
[0037]
In the above-described embodiment, the method for repairing and reinforcing the wooden beam 1 in which the crack 2 has occurred has been described, but it is also possible to repair and reinforce the wooden beam 1 even before the crack 2 has occurred. It is.
[0038]
In this case, the primer 4 is applied to the outer periphery of the wooden beam 1 as shown in FIG. Then, after the primer 4 is cured by finger touch, a putty agent 5 such as an epoxy putty is leveled smoothly on the outer periphery of the wooden beam 1.
[0039]
Next, as shown in FIG.1 (c), after the putty agent 5 hardens | cures, it is the 1st fiber reinforcement sheet along the fiber direction (longitudinal direction) of the wooden beam 1 on the lower side (one side) of the wooden beam 1 6 is pasted.
[0040]
Next, after curing of the adhesive to which the first fiber reinforced sheet 6 is pasted, both ends are extended from the lower side (one side) of the wooden beam 1 to the other side (upper side) and the fiber direction (longitudinal direction) of the wooden beam 1 The second fiber reinforced sheet 7 is wound around at an angle. At the same time, another second fiber reinforced sheet 7 ′ is alternately stacked on the second fiber reinforced sheet 7 by hanging the both ends of the wooden beam 1 from the lower side (one side) to the upper side (the other side). Paste in the way.
[0041]
Next, after curing of the adhesive to which the second fiber reinforced sheets 7 and 7 'are attached, the third fiber reinforced sheet is stacked on the first fiber reinforced sheet 6 and the second fiber reinforced sheets 7 and 7'. 8 is wound in the fiber direction (longitudinal direction) of the wooden beam 1 and wound and pasted.
[0042]
Thus, repair and reinforcement of the wooden beam 1 before the crack 2 occurs are performed. Also in this case, it is possible to affix the second fiber reinforced sheets 7 and 7 'while avoiding the above-described orthogonal beam 11 (see FIG. 4).
[0043]
In all of the above-described embodiments, the wooden beam 1 is described as an example of the long wooden member. However, repair and reinforcement can be similarly performed even in the case of a wooden pillar or a wooden bar (not shown). . In this case, the 1st fiber reinforced sheet 6 is affixed on the one side of the wooden pillar in which the crack part 2 produced, or the one side of the wooden pillar where a bending moment is applied. Further, the second fiber reinforced sheets 7 and 7 ′ are attached to the other side obliquely intersecting the fiber direction (longitudinal direction) of the wooden pillar by hanging both ends from one side of the wooden pillar to the other side. The ends are superposed and pasted. In addition, the third fiber reinforced sheet 8 is attached by directing from one side of the wooden pillar to the fiber direction of the wooden pillar, and the other end is polymerized and attached.
[0044]
In all the embodiments described above, a series of long wooden members without joints have been illustrated and described. However, as a long wooden member with various joints, the repair and reinforcement of the joints are also described above. It is possible to adopt the repair and reinforcement method. In this case, the second fiber reinforced sheets 7, 7 ′ are alternately overlapped and pasted at the position of the joint portion in the same manner as the pasting to the cracked portion 2, so that they are struck. Thereby, sufficient tensile resistance which can bear the bending moment and shearing force concerning a joint part is obtained.
[0045]
As described above, according to the above-described method for repairing and reinforcing a long wooden member, it is possible to obtain a sufficient tensile resistance that can bear the bending moment of the wooden beam 1 (a wooden column). Further, it is possible to prevent the beam or bulge of the wooden beam 1 (wood pillar) in the direction perpendicular to the fiber direction. In particular, the above-described method for repairing and reinforcing a long wooden member is a method for repairing and reinforcing an existing part, and thus is useful when it is difficult to replace an existing member of a wooden building such as preservation of a historical building. .
[0046]
【The invention's effect】
As described above, according to the method for repairing and reinforcing a long wooden member of the present invention, since the second fiber reinforced sheet is stuck obliquely across the fiber direction of the long wooden member, the long wooden member is A tensile resistance responsible for the bending moment applied to the fiber direction of the member can be obtained. In particular, since the second fiber reinforced sheet obliquely intersects the fiber direction of the long wooden member, even if there is a beam orthogonal to the long wooden member, the portion with the beam is avoided. Sufficient tensile resistance responsible for the bending moment applied to can be obtained. Further, since the third fiber reinforced sheet is wound and pasted in a direction perpendicular to the fiber direction of the long wooden member, it is possible to prevent the wooden long member from being swelled or swollen in the fiber direction.
[0047]
In addition, the second fiber reinforced sheet is attached to the both ends of the cracked portion from the opposite side of the cracked portion so as to be obliquely crossed in the fiber direction of the long wooden member. It can handle the bending moment applied to cracked parts. In particular, cracks often occur where there is a beam orthogonal to the long wooden member, but the second fiber reinforced sheet crosses the fiber direction of the long wooden member diagonally, so avoid the beam. In addition, it is possible to take charge of the bending moment applied to the cracks generated in a certain part of the beam.
[0048]
Moreover, a crack part can be reliably reinforced by embedding a reinforcement member in the groove | channel which crosses the crack part which arose in the wooden elongate member.
[0049]
Further, by applying a primer to the outer periphery of the long wooden member, the repair of the long wooden member and the waterproofness of the reinforcing portion can be enhanced. Furthermore, it is possible to improve the sticking of each fiber reinforced sheet by smoothening the putty agent on the outer periphery of the long wooden member.
[0050]
Moreover, by sticking the second fiber reinforced sheet so as to be substantially orthogonal to the direction in which the cracked portion is generated, it can be appropriately reinforced according to the state of the sheared cracked portion.
[0051]
In addition, the second fiber reinforced sheet is hung and pasted diagonally in the fiber direction of the wooden long member by hanging both ends from the position of the cracked portion of the wooden long member on the opposite side of the cracked portion, The second fiber reinforced sheet is separated from the second fiber reinforced sheet by attaching another second fiber reinforced sheet on the opposite side of the cracked portion from the position of the cracked portion and alternately overlapping the second fiber reinforced sheet. Since the second fiber reinforced sheet is overlapped at the position of the cracked portion and is overlaid, the bending moment applied to the cracked portion can be sufficiently handled.
[Brief description of the drawings]
FIGS. 1A to 1F are diagrams illustrating a procedure of a repair and reinforcement method for a long wooden member in the present embodiment.
FIG. 2 is a diagram showing how to apply a second fiber reinforced sheet according to a cracked portion.
FIG. 3 is a diagram showing a case where a reinforcing member is used.
FIG. 4 is a view showing how to stick each fiber reinforced sheet when there is an orthogonal beam.
[Explanation of symbols]
1 Wooden beams (long wooden members)
2 Cracking part 3 Filler 4 Primer 5 Putty agent 6 First fiber reinforced sheet 7, 7 'Second fiber reinforced sheet 8 Third fiber reinforced sheet 9 Groove 10 Reinforcing member

Claims (6)

Attaching the first fiber reinforced sheet to one side of the long wooden member along the fiber direction of the long wooden member;
A second fiber reinforced sheet is overlapped with the first fiber reinforced sheet, and the both ends of one end of the wooden long member are hung from the other side, and the two cross sections are obliquely crossed in the fiber direction of the wooden long member and wound. A step of attaching another second fiber reinforced sheet to the second fiber reinforced sheet by alternately overlapping the second fiber reinforced sheet from one side of the wooden long member to the other side; and
A step of stacking a third fiber reinforced sheet on the first fiber reinforced sheet and the second fiber reinforced sheet, and winding and pasting in a fiber direction of the wooden long member;
A method for repairing and reinforcing a long wooden member, comprising: A step of covering and sticking the first fiber reinforced sheet covering the cracked portion of the long wooden member along the fiber direction of the long wooden member;
A second fiber reinforced sheet is stacked on the first fiber reinforced sheet, and both ends of the wooden long member are hooked on opposite sides of the cracked portion in the fiber direction of the wooden long member. A process of crossing diagonally, winding and pasting,
A step of stacking a third fiber reinforced sheet on the first fiber reinforced sheet and the second fiber reinforced sheet, and winding and pasting in a fiber direction of the wooden long member;
A method for repairing and reinforcing a long wooden member, comprising: A step of burying a reinforcing member in the groove by providing a groove that crosses the crack generated in the long wooden member;
Covering the first fiber reinforced sheet covering the cracked portion of the long wooden member along the fiber direction of the long wooden member;
A second fiber reinforced sheet is stacked on the first fiber reinforced sheet, and both ends of the wooden long member are hooked on opposite sides of the cracked portion in the fiber direction of the wooden long member. A process of crossing diagonally, winding and pasting,
A step of stacking a third fiber reinforced sheet on the first fiber reinforced sheet and the second fiber reinforced sheet, and winding and pasting in a fiber direction of the wooden long member;
A method for repairing and reinforcing a long wooden member, comprising: Providing a groove that crosses the crack generated in the long wooden member, and embedding a reinforcing member in the groove;
Filling the cracked portion generated in the wooden long member with a filler;
Applying a primer to the outer circumference of the long wooden member;
Smoothing the putty agent on the outer circumference of the long wooden member;
Covering the first fiber reinforced sheet covering the cracked portion of the long wooden member along the fiber direction of the long wooden member;
A second fiber reinforced sheet is stacked on the first fiber reinforced sheet, and both ends of the wooden long member are hooked on opposite sides of the cracked portion in the fiber direction of the wooden long member. A process of crossing diagonally, winding and pasting,
A step of stacking a third fiber reinforced sheet on the first fiber reinforced sheet and the second fiber reinforced sheet, and winding and pasting in a fiber direction of the wooden long member;
A method for repairing and reinforcing a long wooden member, comprising: The method for repairing and reinforcing a long wooden member according to any one of claims 2 to 4, wherein the second fiber reinforced sheet is pasted so as to be substantially orthogonal to a direction in which the crack portion is generated. The second fiber reinforced sheet is overlapped with the first fiber reinforced sheet, and both ends of the long wooden member are hung on opposite sides of the cracked portion, and the fiber direction of the long wooden member is The second second fiber reinforced sheet is put on the opposite side of the cracked portion from the position of the cracked portion of the long wooden member, and the second fiber reinforced sheet is wrapped and pasted diagonally. The method of repairing and reinforcing a long wooden member according to any one of claims 2 to 4, further comprising a step of alternately overlapping and sticking to the fiber reinforced sheet.

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