JP6353697B2 - Wooden earthquake resistant wall structure - Google Patents

Description

  The present invention relates to a wooden earthquake resistant wall structure.

  Patent Document 1 discloses a wooden earthquake-resistant wall installed in a plane surrounded by columns and beams. In this prior art, the wooden earthquake-resistant wall is formed by burying a flexible adhesive in a gap provided between the inner surfaces of the columns and beams and the outer periphery of the wooden earthquake-resistant wall to form a deformation absorption layer. And fixed to the beam.

  However, if an opening is provided in such a wooden seismic wall, the proof stress is lowered and the seismic performance is lowered. Therefore, it is required to provide an opening in the wooden earthquake-resistant wall while suppressing a decrease in yield strength.

JP 2003-314083 A

  An object of the present invention is to provide an opening in a wooden earthquake-resistant wall while suppressing a decrease in yield strength.

The invention of claim 1 is a wooden wall joined to the inner surface of the frame so that shear force is transmitted from the frame composed of columns and beams or slabs, and an opening is formed in the frame , Reinforcing means provided on the inner surface of the opening or around the opening in the wooden wall, and the wooden wall is formed by arranging a plurality of wooden boards each having a single plate laminated and bonded together with an adhesive. It is a wood panel in which layers of an integrated wood panel or ground plate are stacked and bonded so that the direction of the plate is orthogonal to each other .

  In the first aspect of the invention, the shearing force is transmitted from the frame to the wooden wall, and the wooden wall bears the shearing force. Further, a reinforcing means is provided around the opening in the opening or the wooden wall. Therefore, an opening can be provided in the wooden earthquake-resistant wall while suppressing a decrease in yield strength.

  According to a second aspect of the present invention, the wooden wall is bonded to the frame with an adhesive.

  In invention of Claim 2, joining to the frame by the adhesive agent of a wooden wall is excellent in workability compared with joining by an anchor, for example.

  According to a third aspect of the present invention, the reinforcing means is composed of column members joined to the upper and lower portions of the frame and the side end portions of the wooden wall.

  In the invention according to claim 3, when the column member behaves integrally with the wooden wall, the bending deformation of the column member is restrained, and the column member effectively bears the shearing force. Furthermore, the wooden wall is surrounded by a frame formed by the pillar member and the frame. As a result, the rotation of the wooden wall is suppressed, and the wooden wall effectively bears the shearing force. Therefore, the proof stress of the wooden earthquake resistant wall is effectively improved.

  ADVANTAGE OF THE INVENTION According to this invention, an opening part can be provided in a wooden earthquake-resistant wall, suppressing the fall of yield strength.

(A)-(D) are front views which show the example of a structure of the opening part of a wooden earthquake-resistant wall. It is a front view which shows the 1st reinforcement example by a 1st reinforcement means. It is a front view which shows the 2nd reinforcement example by a 1st reinforcement means. (A) is an enlarged front view showing a third reinforcement example by the first reinforcement means, (B) is an enlarged front view showing a fourth reinforcement example by the second reinforcement means, and (C) is a second reinforcement. It is an enlarged front view which shows the 5th reinforcement example by a means, (D) is an enlarged front view which shows the 6th reinforcement example by a 2nd reinforcement means. It is a front view which shows the 4th reinforcement example by a 1st reinforcement means. It is a front view which shows the 5th reinforcement example by a 1st reinforcement means. It is a front view which shows the 1st reinforcement example by a 2nd reinforcement means. It is a front view which shows the 2nd reinforcement example by a 2nd reinforcement means. It is a front view which shows the 3rd reinforcement example by a 2nd reinforcement means. It is a front view which shows the 1st reinforcement example by a 3rd reinforcement means. It is a front view which shows the 2nd reinforcement example by a 3rd reinforcement means. It is a front view which shows the 3rd reinforcement example by a 3rd reinforcement means. It is a front view which shows the 4th reinforcement example by a 3rd reinforcement means. (A) is a front view which shows the 5th reinforcement example by a 3rd reinforcement means, (B) is sectional drawing which shows the example of the cross section along the 1-1 line | wire of (A), (C) It is sectional drawing which shows the other example of the cross section along the 1-1 line | wire of (A). (A) is a front view which shows the 6th reinforcement example of a 3rd reinforcement means, and the reinforcement example by a 4th reinforcement means, (B) is an enlarged view of the 4th reinforcement means part of (A).

<Outline of wooden earthquake-resistant wall with opening>
First, an outline of a wooden earthquake resistant wall having an opening will be described.

  As shown in FIG. 1 (A) to FIG. 1 (D), the wooden earthquake resistant walls 50A, 50B, 50C, 50D of this embodiment are made of columns 12A, 12B and beams 14A, 14B made of reinforced concrete or steel reinforced concrete. The wooden wall 20 provided so that the openings 30A, 30B, 30C, and 30D are formed in the frame surface of the frame 10 surrounded by, and reinforcing means. The reinforcing means will be described later. Moreover, when it is not necessary to distinguish a wooden earthquake resistant wall and an opening part, or when showing the same effect | action and effect, AD after a code | symbol may be abbreviate | omitted.

  The wood wall 20 in the present embodiment is composed of a single wood panel in which a plurality of rectangular wood boards arranged so that the long side direction is the vertical direction are arranged in a horizontal direction and joined together with an adhesive. Has been. Further, the wooden board is composed of a single board laminated material having a substantially rectangular planar shape formed by laminating and bonding wood boards (single board) with thin logs peeled off.

  The wooden wall 20 is not limited to the above configuration. For example, it may be a wood panel in which the layers in which the ground plates are arranged are stacked and bonded so that the direction of the plates is orthogonal to each other.

  The wood wall 20 is filled with an adhesive G such as an epoxy resin in a gap provided between the inner surface 11 (columns 12A, 12B, beams 14A, 14B) of the frame 10 and cured to form an adhesive layer 22. Is joined to the frame 10.

  The adhesive G has an appropriate viscosity of 3000 to 20000 (mpa · s) so as to penetrate into the wooden wall 20 and have an anchor effect. In the present embodiment, an adhesive G of 5000 (mpa · s) or more is used.

Here, in this embodiment, as an example of the opening formed in the wooden earthquake-resistant wall,
A first configuration shown in FIG. 1 (A), in which wood walls 20 are provided on both sides of the frame 10, and an opening 30A is formed between them.
A second configuration in which an inverted U-shaped opening 30B that can be used as a passage (door opening) having sweeping is formed in the wooden wall 20 as shown in FIG.
A third configuration in which an opening 30C provided with a window is formed in the wooden wall 20 as shown in FIG.
4th structure by which the opening part 30D used as an equipment opening smaller than a window shown in FIG.1 (D) was formed in the wooden wall 20,
The four configurations will be described.
As will be described later, the opening is not limited to these four configurations.

<Reinforcing means>
Next, reinforcing means provided on the inner surface of the opening 30 or around the opening 30 in the wooden wall 20 will be described. Hereinafter, one or more of the first configuration in FIG. 1A to the fourth configuration in FIG. 1D will be described as an example, but the present invention may be applied to other configurations that are not described. .

[First reinforcing means]
The first reinforcing means is a retaining means for suppressing shear deviation of the wooden wall. Next, a description will be given of an example of reinforcement using the retaining means.

  As shown in FIG. 2, in the first reinforcement example, an L-shaped angle 60 is arranged at a corner 32A of the opening 30A, and an anchor 62 (post-installed) is attached to the upper beam 14A and the lower beam 14B. For example, the angle 60 is joined by a chemical anchor or the like.

  In the second reinforcement example, as shown in FIG. 3, an angle 60 is arranged at the lower corner 32B of the opening 30B, and the angle 60 is joined to the lower beam 14B by a post-installed anchor 62. . In addition, although illustration is abbreviate | omitted, the angle 60 may also be arrange | positioned also to the corner part 32B of the upper side of the opening part 30B, and it may join to the upper side edge part 24B of the opening part 30B in the wooden wall 20 with the anchor 62.

  Note that, as in the third reinforcement example shown in FIG. 4A, in consideration of design, the concave portion 25 may be formed in the corner portion of the wooden wall 20, and the angle 60 may be disposed in the concave portion 25. In FIG. 4A, only the upper corner portion of the wooden wall 20 is shown, but the lower corner portion may have the same configuration.

  As shown in FIG. 5, in the fourth reinforcement example, steel frame reinforcing members 70 such as H-shaped steel are arranged above and below the opening 30A, and an adhesive G is applied to the upper beam 14A and the lower beam 14B. The reinforcing material 70 is joined by the (adhesive layer 72). By joining the reinforcing material 70, an opening 30C similar to the third configuration is formed.

  In the fifth reinforcing example, as shown in FIG. 6, the reinforcing member 70 is joined to the beam 14 </ b> B below the opening 30 </ b> B with an adhesive G (adhesive layer 72), and the plate-like reinforcing member 74 is connected to the wooden wall 20. The reinforcing members 70 and 74 are bonded to the upper end 24B of the opening 30B with adhesive G (adhesive layer 72). By joining the reinforcing members 70 and 74, an opening 30C similar to the third configuration is formed.

(Function and effect)
The operation and effect of the retaining means (first reinforcing means) will be described.

  When horizontal shear deformation occurs in the frame 10, the wooden wall 20 rotates and a large tensile force is generated around the opening 30 in the wooden wall 20. The adhesive layer 22 (adhesive G) that joins the wooden wall 20 and the frame 10 exhibits a high effect on the transmission of the shearing force, but does not exhibit a high effect on the tensile force.

  However, the shear displacement of the wooden wall 20 is suppressed using the retaining means, thereby suppressing the rotation of the wooden wall 20 and resisting the tensile force. Thereby, the wooden wall 20 functions as a rocking wall (a wall whose rotation is suppressed). Therefore, the opening 30 can be provided in the wooden earthquake-resistant wall 50 while suppressing a decrease in yield strength. Moreover, it can reinforce easily by joining the detent | locking means (Angle 60 and the reinforcing materials 70 and 74).

  The adhesive layer 22 between the wooden wall 20 and the frame 10 bears a shearing force and a compressive force, so that the wooden wall 20 is prevented from being broken and the integrity of the wooden wall 20 and the frame 10 is ensured. Is done. Further, since the adhesive G penetrates into the wooden wall 20 and has an anchor effect, the adhesive strength is improved as compared with the case where the adhesive G does not have an anchor effect. The effects of the adhesive layer 22 and the adhesive G are the same in any of the subsequent reinforcing means.

[Second reinforcing means]
The second reinforcing means is a tensile force transmitting means for transmitting a tensile force generated by the rotation of the wooden wall to the frame. Next, an example of reinforcement by the tensile force transmitting means will be described.

  As shown in FIG. 7, the first reinforcement example joins a sheet material 80 made of carbon fiber, aramid fiber, or the like to an outer side 26 </ b> A of the opening 30 </ b> A in the wooden wall 20 with an adhesive and A fixing body 82 (for example, a carbon-fiber-reinforced plastic (CFRP) fixing body) fixed to the beams 14A and 14B and the upper and lower sides of the sheet material 80 are overlapped and joined.

  As shown in FIG. 8, the second reinforcing example is a fixing body in which a sheet material 80 is bonded to the outer side 26 </ b> B of the opening 30 </ b> B in the wooden wall 20 with an adhesive and fixed to the lower beam 14 </ b> B. 82 is bonded to the sheet material 80 in an overlapping manner.

  As shown in FIG. 9, the third reinforcing example includes a fixing member 82 in which a sheet material 80 is bonded to the entire outer periphery 26 </ b> C of the opening 30 </ b> C in the wooden wall 20 with an adhesive and fixed to the upper beam 14 </ b> A. The sheet material 80 is overlapped and joined.

  As in the fourth reinforcement example shown in FIG. 4 (B) and the fifth reinforcement example shown in FIG. 4 (C), a C-shaped angle 66 is arranged in the recess 25 formed in the corner of the wooden wall 20, The angle 66 may be joined to the wooden wall 20 and the beams 14A and 14B.

  The angle 66 and the wood wall 20 may be joined by the anchor 67 as in the upper concave portion 25 in FIG. 4B, or as in the lower concave portion 25 in FIG. 4B. Alternatively, bonding with an adhesive G (adhesive layer 68) may be used. Further, as shown in FIG. 4C, the upper angle 66 and the lower angle 66 may be connected by pressure bonding with a linear member 69 such as a PC steel wire penetrating the wooden wall 20.

  As shown in FIG. 4D, the sixth reinforcement example fixes the reinforcing bar 71 joined by the hoop flip (sleeve) 79 to the wooden wall 20 and the beam 14A and fills the recess 25 with a filler (mortar or resin). ). In FIG. 4D, only the upper corner of the wooden wall 20 is shown, but the lower corner also has the same configuration.

(Function and effect)
The operation and effect of the tensile force transmitting means (second reinforcing means) will be described.

  The tensile force generated around the opening 30 in the wooden wall 20 caused by the rotation of the wooden wall 20 is transmitted to the frame 10 (beams 14A and 14B) by the tensile force transmitting means, thereby resisting the tensile force. Moreover, since the tensile force transmission means is joined around the opening 30 in the wooden wall 20, the rigidity of the wooden wall 20 is improved as compared with the first reinforcing means. Therefore, it is possible to provide the opening 30 in the wooden earthquake-resistant wall 50 while further suppressing the decrease in yield strength.

[Third reinforcing means]
The third reinforcing means is a strength improving means for improving the strength of the wooden wall. In this example, the yield strength improving means is a rigid member having high rigidity such as a steel frame. Next, a description will be given of an example of reinforcement of the rigid member (proof strength improving means).

  As shown in FIG. 10, the first reinforcement example fixes the steel column 100 arranged in the opening 30 </ b> A to the upper and lower beams 14 </ b> A and 14 </ b> B with anchors 62 and the side end 29 of the steel column 100 and the wooden wall 20. Are bonded with an adhesive G (adhesive layer 102).

  In the second reinforcement example shown in FIG. 11 and the third reinforcement example shown in FIG. 12, the steel members 110 and 112 are arranged in a frame shape over the entire circumference of the opening 30A so that the upper and lower beams 14A and 14B are arranged. While fixing with the anchor 62, the steel column 100 and the side edge part 29 of the wooden wall 20 are joined with the adhesive agent G (adhesive layer 102).

  In FIG. 11, the lower steel member 112 has a plate shape and has an opening 30 </ b> B that can be used as an entrance. In FIG. 12, the opening 30C is provided with a window.

  Moreover, rigid members other than steel frames may be used. For example, as in the fourth reinforcement example shown in FIG. 13, the wooden pillar 120 is joined to a fixing body 82 (for example, a CFRP fixing body) fixed to the upper and lower beams 14A and 4B, and the wooden wall 20 You may join the side edge part 29 and the adhesive agent G (adhesion layer 102). Although not shown, the wooden rigid member may be formed into a frame shape.

  As shown in FIGS. 14A and 14B, the fifth reinforcement example is a steel T-shaped rigid member 130 having ribs 134 and an end portion 27B on the side of the opening 30B in the wooden wall 20. Are bonded with an adhesive G (adhesive layer 132). As shown in FIG. 14B, ribs 134 are inserted into and joined to the recesses 136 formed in the end portions 27B of the wooden wall 20. In FIG. 14B and later-described FIG. 14C, hatching representing a cross section is omitted.

  14C, a wooden rigid member 131 having a T-shaped cross section may be joined by inserting a rib 133 into a recess 137 formed in the end portion 27B of the wooden wall 20.

  Further, as in the sixth reinforcement example shown in FIG. 15, it may be constituted by an inverted U-shaped steel rigid member 135 and an angle 60 joined to the lower beam 14B by an anchor 62. . The reinforcing hardware 140 and the bolt 142 in FIG. 15 will be described later.

(Function and effect)
The operation and effect of the rigid member (proof strength improving means (third reinforcing means)) will be described.

  When the rigid member (strength improving means) behaves integrally with the wood wall 20, the bending deformation of the rigid member is restrained, and the rigid member effectively bears the shearing force. Therefore, the opening 30 can be provided in the wooden earthquake-resistant wall 50 while suppressing a decrease in yield strength.

  Further, in the case of the steel column 100 of FIG. 10 and the wooden column 120 of FIG. 13, the rotation of the wooden wall 20 is suppressed by surrounding the wooden wall 20 with the steel column 100 or the wooden column 120 and the beams 14A and 14B. The wooden wall 20 effectively bears the shearing force. That is, a synergistic effect between the rigid member and the wooden wall 20 is obtained, and a decrease in yield strength is effectively suppressed.

  Moreover, as shown in FIG.11 and FIG.12, since the steel member 110 and the steel member 112 are made into frame shape over the perimeter of the opening part 30A, since rotation of the steel members 110 and 112 itself is suppressed, The opening 30 can be provided in the wooden earthquake-resistant wall 50 while further suppressing the decrease in the yield strength.

  Further, as shown in FIG. 14, the ribs 134 and 133 of the rigid members 130 and 131 are inserted into and joined to the recesses 136 and 137 formed in the end portion 27B of the wooden wall 20 to thereby join the end portion 27B of the wooden wall 20. And the deformation of the opening 30B is effectively suppressed.

  Note that the steel column 100, the steel member 110, and the wooden column 120 may be provided on the outer side in the out-of-plane direction of the wooden wall 20 and joined to the wooden wall 20.

[Fourth reinforcing means]
The fourth reinforcing means is a destruction preventing means for preventing destruction around the opening 30 in the wooden wall 20. Next, an example of reinforcement by the destruction preventing means will be described.

  In the reinforcement example, as shown in FIG. 15, a reinforcing metal piece 140 is joined and reinforced by a bolt 142 to a stress concentration portion 28 </ b> B around the opening 30 in the wooden wall 20 where the stress is concentrated. The reinforcing metal piece 140 may be bonded with an adhesive, or a sheet member formed of carbon fiber or aramid fiber may be bonded with an adhesive to reinforce.

(Function and effect)
The operation and effect of the destruction preventing means (fourth reinforcing means) will be described.

  The destruction of the stress concentration portion 28B where the stress around the opening 30B of the wood wall 20 is concentrated is suppressed by the destruction preventing means. Therefore, the opening 30 can be provided in the wooden earthquake-resistant wall 50 while suppressing a decrease in yield strength.

  In addition, since this reinforcement structure has a smaller effect of suppressing a decrease in yield strength than other reinforcing means, it is desirable to apply to relatively small openings such as the third structure and the fourth structure. Further, as shown in FIG. 15, it is desirable to combine with other reinforcing means.

<Others>
The present invention is not limited to the above embodiment.

  For example, the opening part of structures other than opening part 30A-30D shown to FIG. 1 (A)-FIG.1 (D) may be sufficient.

  For example, there may be a configuration in which only the left or right wooden wall 20 in FIG. 1A is provided and the right or left side of the frame 10 is an opening. Further, for example, the wooden wall 20 may be arranged so as to be separated from the left and right pillars 12A and 12B, and an opening may be provided between the wooden wall 20 and the left and right pillars 12A and 12B.

  Alternatively, for example, the wooden wall 20 may be joined to only one of the upper beam 14A and the lower beam 14B. For example, the wooden wall 20 is joined to the left and right columns 12A and 12B and the upper beam 14A (or the lower beam 14B), and an opening is formed between the wooden wall 20 and the lower beam 14B (or the upper beam 14B). The structure which became a part may be sufficient. Further, the wooden wall 20 may be arranged so as to be separated from the upper and lower beams 14A and 14B, and an opening may be provided between the wooden wall 20 and the upper and lower beams 14A and 14B.

  Further, for example, the wooden wall 20 may be configured to be joined to one of the beam 14A and the beam 14B and one of the column 12A and the column 12B. Specifically, the wooden wall 20 may be joined to the lower beam 14B and the column 12A.

  For example, in the above-described embodiment, the wooden wall 20 is joined so as to transmit the shearing force from the frame 10 by the adhesive G (adhesive layer 22), but is not limited thereto. For example, the wooden wall 20 may be joined to the frame 10 with an anchor.

  Further, for example, in the above-described embodiment, the frame 10 is configured to be surrounded by the columns 12A and 12B and the beams 14A and 14B, but is not limited thereto. It may be surrounded not by the beams 14A and 14B but by columns and slabs.

  Furthermore, the present invention can be implemented in various modes without departing from the gist of the present invention.

10 Frame 12A Column 12B Column 14A Beam (an example of the upper part of the frame)
14B Beam (an example of the lower part of a frame)
20 Wood wall 29 Side edge (example of inner surface)
30A Opening 30B Opening 30C Opening 30D Opening 50A Wooden earthquake resistant wall 50B Wooden earthquake resistant wall 50C Wooden earthquake resistant wall 50D Wooden earthquake resistant wall 60 Angle (an example of reinforcing means)
66 angle (an example of reinforcing means)
70 Reinforcing material (an example of reinforcing means)
74 Reinforcing material (an example of reinforcing means)
80 Sheet material (an example of reinforcing means)
100 Steel column (an example of reinforcing means, an example of a column member)
110 Steel member (an example of reinforcing means)
112 Steel members (an example of reinforcing means)
120 Wood pillar (an example of reinforcing means, an example of a pillar member)
130 Rigid member (an example of reinforcing means)
131 Rigid member (an example of reinforcing means)
135 Rigid member (an example of reinforcing means)
140 Reinforcement hardware (an example of reinforcement means)
G adhesive

Claims (3)

A wooden wall joined to the inner surface of the frame so that shear force is transmitted from the frame composed of columns and beams or slabs and an opening is formed in the frame ;
Reinforcing means provided around the opening in the inner surface of the opening or the wooden wall;
Equipped with a,
The wooden wall is formed by stacking a plurality of wooden boards obtained by laminating and adhering a single board in a horizontal direction and connecting and integrating them with an adhesive so that the directions of the boards are orthogonal to each other. A wood panel that is glued
Wooden earthquake resistant wall structure. The wooden wall is joined to the frame with an adhesive,
The wooden earthquake resistant wall structure according to claim 1. The reinforcing means is composed of pillar members joined to the upper and lower parts of the frame and the side end of the wooden wall.
The wooden earthquake resistant wall structure according to claim 1 or 2.

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