JP7201149B2 - Horizontal member reinforcement structure - Google Patents

Description

The present invention relates to a reinforcing structure for horizontal members.

In recent years, from the viewpoint of design and weight reduction, beams and floors of buildings are sometimes constructed with wooden horizontal members. For example, Patent Literature 1 discloses a joint structure in which a wooden floor panel is sandwiched between a wall panel of a building unit on a lower floor and a wall panel of a building unit on an upper floor.

JP-A-2000-230276

However, in a configuration in which a wooden floor panel is sandwiched between upper and lower wall panels as shown in Patent Document 1, when a horizontal load is applied to the wall panel during an earthquake or the like, the floor panel is displaced due to the displacement of the upper and lower wall panels. There is a risk that the floor panel will be deformed due to the shear force in the out-of-plane direction.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a horizontal member reinforcement structure capable of suppressing deformation of a wooden horizontal member in the out-of-plane direction.

The horizontal member reinforcing structure according to claim 1 comprises a wooden horizontal member, wall members disposed on the upper and lower surfaces of the horizontal member and holding the horizontal member from above and below, and a space between the horizontal member and the wall member. and reinforcing members having a size protruding from the wall member on both sides in the thickness direction, the reinforcing members being arranged at the joints of the adjacent wall members. In addition, the wall member is arranged in contact with the upper and lower surfaces of the horizontal member at locations where the reinforcing member is not arranged, and penetrates the reinforcing member and the horizontal member, and the upper and lower wall members It has a pull bolt that joins the

According to the above configuration, the wall members that sandwich the horizontal member from above and below are arranged on the upper and lower surfaces of the horizontal member. A reinforcing member having a size protruding is provided on both sides in the thickness direction. The reinforcing members are arranged at the joints of the adjacent wall members, and the wall members are arranged in contact with the upper and lower surfaces of the horizontal member at locations where the reinforcing members are not arranged. A draw bolt passes through the reinforcing member and the horizontal member and joins the upper and lower wall members.
Therefore, deformation of the horizontal member in the out-of-plane direction (vertical direction) can be suppressed by the reinforcing member.

The horizontal member reinforcing structure according to claim 2 is the horizontal member reinforcing structure according to claim 1, wherein the reinforcing member is arranged at a joint portion of the adjacent wall members.

When a horizontal load in the in-plane direction is applied to the wall member, the adjacent wall members are displaced from each other at the joint portion, so that the largest shear force is applied to the horizontal member at the joint portion of the wall member. Here, according to the above configuration, since the reinforcing member is arranged at the joint portion of the adjacent wall members, it is possible to efficiently suppress deformation of the horizontal member in the out-of-plane direction.

The horizontal member reinforcing structure according to claim 3 is the horizontal member reinforcing structure according to claim 1 or 2, wherein the horizontal member is provided with a recess into which the reinforcing member is fitted, A steel material is provided that penetrates the reinforcing member and the horizontal member and joins the wall member.

According to the above configuration, the reinforcing member is fitted into the recess provided in the horizontal member, and the steel material penetrates the reinforcing member and the horizontal member. Therefore, even when a horizontal load is repeatedly applied to the wall member, it is possible to prevent the reinforcing member from shifting with respect to the horizontal member.

ADVANTAGE OF THE INVENTION According to this invention, the deformation|transformation of the out-of-plane direction of a wooden horizontal member can be suppressed.

It is an overall perspective view showing a horizontal member and a wall member in the first embodiment. (A) is a cross-sectional view along the line AA in FIG. 1, and (B) is a cross-sectional view along the line BB in (A). FIG. 3B is a cross-sectional view corresponding to FIG. 2B showing the horizontal member and the wall member in the first embodiment when a horizontal load is applied; It is a whole perspective view which shows the horizontal member and wall member in 2nd Embodiment. (A) is a sectional view taken along line CC in FIG. 4, and (B) is a sectional view taken along line DD in (A). FIG. 5B is a cross-sectional view corresponding to FIG. 5B showing the horizontal member and the wall member in the second embodiment when a horizontal load is applied; (A) is a partial enlarged view showing a joint portion between a horizontal member and a wall member in a modified example, and (B) is a cross-sectional view taken along the line EE.

<First embodiment>
A reinforcing structure for horizontal members according to a first embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG.

As shown in FIG. 1, in this embodiment, the horizontal member is, for example, a floor member 10 that constitutes a building. The floor member 10 is composed of cross-laminated wood (CLT, Cross Laminated Timber) in which, for example, a plurality of lamina materials (not shown) are superimposed and adhered so that the fiber directions of the wood fibers are perpendicular to each other, and extend in the horizontal direction. ing.

In addition, wall members 12 that form a building together with the floor member 10 are provided above and below the floor member 10, respectively. The wall members 12 extend in the vertical direction, and the floor member 10 is sandwiched between the wall members 12 from above and below. The wall members 12 are made of, for example, cross-laminated wooden lumber similar to the floor member 10, and the adjacent wall members 12 are butted against each other at joints and spline-joined to each other.

As shown in FIGS. 2(A) and 2(B), recesses 14 are provided in the upper and lower surfaces of the floor member 10 at portions in contact with the joint portions of the wall members 12, respectively. Reinforcement members 16 made of, for example, rectangular steel plates extending in the horizontal direction are fitted into the recesses 14 respectively. In this embodiment, the depth of the recess 14 is substantially equal to the height (thickness) of the reinforcing member 16, and the upper or lower surface of the reinforcing member 16 fitted in the recess 14 is the upper surface of the floor member 10. Or it is flush with the bottom surface.

Furthermore, the floor member 10, the wall member 12, and the reinforcement member 16 are formed with a through hole 20 that penetrates the floor member 10 and the reinforcement member 16 in the thickness direction and reaches the fastening opening 18 provided in the wall member 12. ing. A pull bolt 24 made of steel and both ends of which are fastened with nuts 22 at the fastening opening 18 is inserted through the through hole 20 . They are clamped together and fixed to each other.

When a horizontal load in the in-plane direction is applied to the wall member 12 of the present embodiment, the upper and lower wall members 12 are displaced, and a shear force in the out-of-plane direction (vertical direction) is applied to the floor member 10 sandwiched therebetween. Join. In particular, at the joints of the wall members 12, as shown in FIG. 3, the adjacent wall members 12 are displaced (locking deformation), so that the shear force applied to the floor member 10 is maximized.

In general, the wooden floor member 10 made of orthogonal laminated lumber or the like has less strength against external force in the out-of-plane direction than in the in-plane direction. However, according to the present embodiment, since the reinforcing member 16 is arranged at the portion of the floor member 10 that contacts the joint portion of the wall member 12, the deformation of the reinforcing member 16 causes the out-of-plane direction force applied to the floor member 10. Shearing force can be absorbed, and deformation of the floor member 10 in the out-of-plane direction can be efficiently suppressed.

Further, according to this embodiment, the reinforcing member 16 is fitted in the recess 14 provided in the floor member 10 and fixed by the pull bolt 24 penetrating the floor member 10, the wall member 12, and the reinforcing member 16. ing. Therefore, even when a horizontal load is repeatedly applied to the wall member 12 , it is possible to suppress the reinforcing member 16 from shifting with respect to the floor member 10 .

Furthermore, according to this embodiment, the reinforcing members 16 are arranged on the upper surface and the lower surface of the floor member 10, respectively. Therefore, compared to a configuration in which the reinforcing member 16 is arranged only on the upper surface or the lower surface of the floor member 10, the rigidity of the floor member 10 can be further increased, and the deformation of the floor member 10 in the out-of-plane direction can be further suppressed. can do.

<Second embodiment>
Next, a reinforcing structure for horizontal members according to a second embodiment of the present invention will be described with reference to FIGS. 4 to 6. FIG. Illustrations and descriptions of the same configurations as those of the first embodiment will be omitted, and only the points of difference will be described.

In the first embodiment, the floor member 10 is made of one sheet of cross-laminated lumber, while in the second embodiment, as shown in FIG. are splined together.

As shown in FIGS. 5A and 5B, the joint portion of the floor member 30 is provided at the same position as the joint portion of the wall member 32, and is provided on the upper and lower surfaces of the joint portion of the floor member 30. Reinforcing members 36 are fitted into the recesses 34 formed in the recesses 34, respectively. Further, similarly to the first embodiment, the floor member 30, the wall member 32, and the reinforcement member 36 are fixed to each other by a steel pull bolt 44 inserted through the through hole 40. As shown in FIG.

When a horizontal load in the in-plane direction is applied to the wall members 32 of this embodiment, as shown in FIG. A large shear force is applied.

Here, according to the present embodiment, since the reinforcement member 36 is arranged at the joint portion of the floor member 30 and the wall member 32, the deformation of the reinforcement member 36 causes an out-of-plane shear force applied to the floor member 30. can be absorbed, and deformation of the floor member 30 in the out-of-plane direction can be efficiently suppressed.

<Other embodiments>
Although the first and second embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various other embodiments are possible within the scope of the present invention.

For example, in the above-described embodiment, the reinforcing members 16, 36 are arranged on the upper and lower surfaces of the floor members 10, 30, respectively. may be placed.

By placing the reinforcing members 16, 36 on at least one of the upper or lower surfaces of the floor members 10, 30, the stiffness of the floor members 10, 30 is partially reduced compared to configurations in which the reinforcing members 16, 36 are not placed. , and deformation of the floor members 10 and 30 in the out-of-plane direction can be suppressed.

Further, in the above embodiment, the floor members 10, 30 are directly sandwiched between the wall members 12, 32, but a reinforcing member fixed to the floor members may be sandwiched between the wall members. Specifically, for example, as shown in FIGS. 7A and 7B, floor members 50 are fixed to both side surfaces of steel-framed beams 54 as reinforcing members, and the beams 54 are supported by wall members 52. It is good also as a structure which pinches from the upper and lower sides. A rib plate 54A for reinforcement is provided at a portion of the web of the beam 54 corresponding to the joint portion of the wall member 52. As shown in FIG.

The wall member 52 and the floor member 50 are fixed to each other without directly holding the floor member 50 by the wall member 52 by arranging the beam 54 fixed to the floor member 50 to be held by the wall member 52.例文帳に追加be able to. Therefore, the steel-framed beams 54 serving as reinforcing members can suppress the deformation of the floor member 50 in the out-of-plane direction and improve the transmission rate of the vertical axial force of the wall member 52 .

In the above embodiment, the floor members 10 and 30 are used as horizontal members, but the horizontal members are not limited to the floor members 10 and 30, and may be beam members, for example. In addition, although the floor members 10 and 30 are made of cross-laminated lumber, they may be made of wood. Alternatively, it may be composed of a single layer of solid wood.

Similarly, the wall members 12 and 32 are not limited to cross-laminated lumber, and may be made of laminated veneer lumber, single-layer solid lumber, or precast reinforced concrete (RC). Further, the material of the reinforcing members 16 and 36 is not limited to the steel plate as long as the material has higher rigidity than the wooden floor members 10 and 30 . Further, the reinforcing members 16 and 36 may be formed by arranging reinforcing bars, steel bars, or carbon fibers in a plate shape.

Further, in the above embodiment, the pull bolts 24, 44 were used as the steel materials for fixing the floor members 10, 30, the wall members 12, 32, and the reinforcing members 16, 36. Instead of the pull bolts 24, 44, PC steel wires may be used, and the floor members 10, 30, wall members 12, 32, and reinforcing members 16, 36 may be fixed with a plurality of screws.

Furthermore, although the reinforcing members 16 and 36 were fitted into the recesses 14 and 34 of the floor members 10 and 30, the reinforcing members 16 and 16 were installed on the upper surface or the lower surface of the floor members 10 and 30 without providing recesses in the floor members 10 and 30. may be placed. Alternatively, recesses may be provided on the wall members 12 and 32 and the reinforcing members 16 and 36 may be fitted into the recesses of the wall members 12 and 32 .

Alternatively, the reinforcing member 16 may be arranged vertically along the side surface of the floor member 10 . By arranging the reinforcing member 16 in the vertical direction, it is also possible to increase the rigidity of the floor member 10 and to suppress the deformation of the floor member 10 in the out-of-plane direction.

Furthermore, in the above embodiment, the reinforcing members 16, 36 are arranged at the joints of the wall members 12, 32, but reinforcing members may be arranged at portions other than the joints of the wall members 12, 32. By arranging the reinforcing member at least between the floor member and the wall member, the rigidity of the floor member can be increased by the reinforcing member, and bending deformation of the floor member can be suppressed.

10, 30, 50 floor member (an example of a horizontal member)
12, 32, 52 Wall members 14, 34 Recesses 16, 36 Reinforcing members 24, 44 Pulling bolts (an example of steel materials)
54 Beam (an example of a reinforcing member)

Claims (3)

a wooden horizontal member;
wall members disposed on the upper and lower surfaces of the horizontal member and sandwiching the horizontal member from above and below;
reinforcing members provided above and below between the horizontal member and the wall member and having a size protruding from both sides in the thickness direction of the wall member;
A reinforcement structure for a horizontal member comprising:
The reinforcing member is arranged at a joint portion of the adjacent wall members, and the wall member is arranged in contact with the upper and lower surfaces of the horizontal member at a portion where the reinforcing member is not arranged. , a pull bolt that penetrates the reinforcing member and the horizontal member and joins the upper and lower wall members;
Reinforcing structure for horizontal members. 2. The horizontal member reinforcement structure according to claim 1, wherein said reinforcing member is arranged at a joint portion of said adjacent wall members. The horizontal member is provided with a recess into which the reinforcing member is fitted,
a steel member passing through the reinforcing member and the horizontal member and joining the wall member;
A reinforcement structure for a horizontal member according to claim 1 or 2.

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