JP2022187142A - Ligneous composite wall structure - Google Patents

Abstract

To provide a ligneous composite wall structure improved in workability, while heightening design.SOLUTION: A ligneous composite wall structure comprises: a frame having a pair of columns, an upper beam and a lower beam installed to the pair of columns; a pair of wooden surface materials 44 arranged between the upper beam and the lower beam and facing each other in the outer surface direction of the frame; a pair of end part partition plates 50 and an intermediate partition plate 54 connecting the pair of wooden surface materials 44 and partitioning a space between the pair of wooden surface materials 44 into a plurality of filling spaces R in the material axis direction of the beam; and filling concrete 60 filled into each of the multiple filling spaces R and connected to the upper beam and the lower beam.SELECTED DRAWING: Figure 4

Description

The present invention relates to wood composite wall constructions.

A wall structure including a reinforced concrete earthquake-resistant wall and a wooden earthquake-resistant wall covering the wall surface of the reinforced concrete earthquake-resistant wall is known (see, for example, Patent Document 1).

Further, there is known a steel plate concrete wall structure in which concrete is placed between steel plates (see, for example, Patent Document 2).

Furthermore, there is known a building block that includes a pair of decorative boards that face each other and a connecting member that connects the pair of decorative boards (see, for example, Patent Document 3).

JP 2015-040401 A JP-A-2002-339485 JP-A-2003-003591

In the technique disclosed in Patent Document 1, by covering the wall surface of the reinforced concrete earthquake-resistant wall with a wooden earthquake-resistant wall, the design can be improved. Therefore, there is room for improvement from the viewpoint of workability.

SUMMARY OF THE INVENTION In view of the above facts, the present invention aims to improve the workability of a wooden composite wall structure while enhancing design.

The wooden composite wall structure according to claim 1 comprises a frame structure having a pair of pillars and upper and lower beams constructed over the pair of pillars; A partition that connects a pair of wooden surface materials facing each other in the direction and a pair of the wooden surface materials, and divides the space between the pair of the wooden surface materials into a plurality of filling spaces in the material axis direction of the beam. a plate, and filling concrete that is filled in each of the plurality of filling spaces and joined to the upper and lower beams;
Prepare.

According to the wooden composite wall structure according to claim 1, the frame has a pair of pillars and upper and lower beams constructed over the pair of pillars. A pair of wooden face members is arranged between the upper and lower beams. The pair of wooden face members face each other in the out-of-plane direction of the frame. The pair of wooden face members are connected by a partition plate. The partition plate partitions the space between the pair of wooden surface members into a plurality of filling spaces in the axial direction of the beam. A plurality of filling spaces are each filled with filling concrete that is joined to the upper and lower beams. This forms a wooden composite wall.

Here, the pair of wooden face members and the partition plate function as forms for filling concrete. This eliminates the need for temporary installation and removal of forms for filling concrete. Therefore, it is possible to improve the workability of the wooden composite wall while enhancing the design.

In addition, by connecting the pair of wooden face members with the partition plate, it is possible to suppress the opening of the pair of wooden face members as a formwork during filling of the filling concrete.

In addition, the filling concrete is joined with the beams above and below. As a result, during an earthquake, seismic force (horizontal force) is transmitted from the upper and lower beams to the filling concrete. The seismic force transmitted to the filling concrete is transmitted to a pair of wooden face members via the partition plate. In this way, during an earthquake, not only the filled concrete but also the pair of wooden face members can resist the seismic force, so the earthquake resistance performance of the wooden composite wall is improved.

In addition, by filling each of the plurality of filling spaces partitioned by the partition plates with the filling concrete and dividing the filling concrete into a plurality of pieces, the filling concrete resists the seismic force like a bent column. As a result, the toughness of the composite wood wall is improved, so that the deformation performance of the composite wood wall can be enhanced.

The composite wood wall structure according to claim 2 is the composite wood wall structure according to claim 1, further comprising a plurality of pairs of the wooden face members arranged in the axial direction of the beam, and a plurality of pairs of the wood face members. The wooden face members are joined in a state in which the division plates provided at the respective ends are overlapped.

According to the wooden composite wall structure according to claim 2, a plurality of pairs of wooden face members arranged in the axial direction of the beam are provided. A plurality of sets of pairs of wooden face members are joined together in a state in which the partition plates provided at the respective ends are overlapped with each other.

By providing partition plates at the ends of the pair of wooden face members in this manner, the wooden composite wall can be easily expanded as required.

The wood composite wall structure according to claim 3 is the wood composite wall structure according to claim 1 or claim 2, further comprising joining reinforcing bars embedded in the filling concrete to join the filling concrete and the beams.

According to the wooden composite wall structure according to claim 3, the joining reinforcing bars are embedded in the filling concrete. By joining the filling concrete and the upper and lower beams with this joining reinforcing bar, the earthquake resistance performance of the wooden composite wall can be improved.

As described above, according to the present invention, it is possible to improve the workability of the wooden composite wall structure while enhancing the design.

1 is an elevational view showing a frame and a composite wood wall to which a composite wood wall structure according to an embodiment is applied; FIG. FIG. 2 is an elevation cross-sectional view showing the upper part of the upper beam and composite wood wall shown in FIG. 1; FIG. 2 is an elevation cross-sectional view showing the lower beam and the lower portion of the wooden composite wall shown in FIG. 1; 4 is a cross-sectional view taken along line 4-4 of FIG. 1; FIG. FIG. 5 is a plan cross-sectional view showing a composite wood wall to which a modified example of the composite wood wall structure according to one embodiment is applied; FIG. 10 is a cross-sectional plan view showing columns and a composite wood wall in a modified example of the composite wood wall structure according to one embodiment. FIG. 10 is a cross-sectional plan view showing columns and a composite wood wall in a modified example of the composite wood wall structure according to one embodiment.

Hereinafter, a wooden composite wall structure according to one embodiment will be described with reference to the drawings.

(wooden composite wall structure)
As shown in FIG. 1 , the composite wood wall structure according to this embodiment includes a frame 10 and a composite wood wall 40 .

(framework)
The frame 10 is a Rahmen frame having a pair of pillars 20 and an upper beam 30U and a lower beam 30L that are installed on the pair of pillars 20 . The pair of pillars 20 are made of reinforced concrete, for example, and are erected with a gap in the horizontal direction. A plurality of column main reinforcements 22 and a plurality of shear reinforcements 24 (see FIG. 6) are embedded in each column 20 .

The upper beam 30U and the lower beam 30L are laid over the pair of pillars 20 with a gap therebetween in the vertical direction. As shown in FIG. 2, the upper beam 30U is made of reinforced concrete, and has a plurality of main beam reinforcements 32 and a plurality of shear reinforcements 34 embedded therein. Similarly, as shown in FIG. 3, the lower beam 30L is made of reinforced concrete, and a plurality of main beam reinforcements 32 and a plurality of shear reinforcements 34 are embedded therein.

The arrow X shown in each figure indicates the axial direction of the upper beam 30U and the lower beam 30L (the lateral width direction of the wooden composite wall 40). The arrow Y direction indicates the out-of-plane direction of the frame 10 (thickness direction of the composite wooden wall 40). Also, the upper beam 30U and the lower beam 30L are examples of upper and lower beams.

(wooden composite wall)
As shown in FIG. 1 , the wooden composite wall 40 is, for example, a seismic wall or load-bearing wall provided within the structure plane of the frame 10 . Also, the wooden composite wall 40 is arranged between the upper beam 30U and the lower beam 30L. The upper end of this wooden composite wall 40 is joined to the upper beam 30U. Similarly, the lower end of the wooden composite wall 40 is joined to the lower beam 30L.

The synthetic wooden wall 40 and the pair of pillars 20 are not joined, and openings 26 are formed between the synthetic wooden wall 40 and the pair of pillars 20, respectively.

The wooden synthetic wall 40 has a plurality of (two in this embodiment) wall portions 42 . The wall portions 42 are arranged adjacent to each other in the lateral width direction of the wooden composite wall 40 (in the material axial direction of the upper beam 30U and the lower beam 30L), and their ends are joined together.

As shown in FIG. 4, each wall portion 42 includes a pair of wood panels 44, a pair of end partition plates 50, an intermediate partition plate 54, a plurality of filling concretes 60, and a plurality of unit wall reinforcements 70. and The pair of wooden surface members 44, the pair of end partition plates 50, and the intermediate partition plate 54 are formed of CLT (Cross Laminated Timber).

The pair of wooden surface members 44, the pair of end partition plates 50, and the intermediate partition plate 54 are not limited to CLT. good. Moreover, the intermediate partition plate 54 is not limited to a wooden plate, and may be formed of a metal plate, shaped steel, or the like.

As shown in FIG. 1, the pair of wooden surface members 44 are formed in a rectangular shape when viewed from the thickness direction (the out-of-plane direction of the frame 10), the lower surface of the upper beam 30U and the upper surface of the lower beam 30L. are placed across the

As shown in FIG. 4 , the pair of wooden surface members 44 are arranged facing each other in the out-of-plane direction (arrow Y direction) of the frame 10 while being spaced apart from each other in the out-of-plane direction. The pair of wooden surface members 44 are connected by a pair of end partition plates 50 and an intermediate partition plate 54 . The end partition plate 50 and the intermediate partition plate 54 are examples of partition plates.

The pair of end partition plates 50 are arranged on both sides of the pair of wooden surface members 44 in the width direction (the arrow X direction). The pair of end partition plates 50 has the same height as the pair of wooden surface members 44 and extends from the lower end to the upper end of the pair of wooden surface members 44 . Also, the pair of end partitioning plates 50 are arranged facing each other in the lateral width direction of the pair of wooden surface members 44 .

Each end partition plate 50 is arranged over the widthwise end portions 44E of the pair of wooden surface members 44 . The inner surface 50S of each end partition plate 50 overlaps the end surface of the end portion 44E of the pair of wooden surface members 44, and is fixed to the end surface with wood screws 46. As shown in FIG. As a result, the ends 44E of the pair of wooden surface members 44 are connected by the pair of end partitioning plates 50. As shown in FIG.

Moreover, the plurality of wall portions 42 are arranged in a state in which the respective wooden surface members 44 are arranged in the width direction. That is, the composite wooden wall 40 includes a plurality of pairs of wooden surface members 44 arranged in the axial direction of the upper beam 30U and the lower beam 30L. Adjacent wall portions 42 are arranged with the respective end partition plates 50 overlapping each other. Also, the stacked end partition plates 50 are joined via a pair of connecting plates 52 .

The pair of connecting plates 52 are arranged on both sides of the overlapped end partitioning plates 50 in the width direction (the out-of-plane direction of the frame 10). The pair of connecting plates 52 has the same height as the pair of wooden surface members 44 and extends from the lower end to the upper end of the end partition plate 50 .

Each connecting plate 52 is arranged over the end face in the lateral width direction of the stacked end partition plates 50 and is fixed to the end face with a wood screw (wood screw) 46 . As a result, the overlapping end partition plates 50 are joined by the pair of connecting plates 52 .

The intermediate partition plate 54 is arranged between the pair of wooden surface members 44 . The intermediate partition plate 54 is arranged between the pair of end partition plates 50 and faces the pair of end partition plates 50 respectively. The intermediate partition plate 54 has the same height as the pair of wooden surface members 44 and extends from the lower end to the upper end of the pair of wooden surface members 44 .

The intermediate partition plate 54 is arranged across the inner surfaces (facing surfaces) 44S of the pair of wooden surface members 44 . In addition, the end surface of the intermediate partition plate 54 overlaps the inner surfaces 44S of the pair of wooden surface members 44 and is fixed to the inner surfaces 44S with wood screws 46 . The intermediate partition plate 54 and the pair of end partition plates 50 divide the space between the pair of wooden surface members 44 into a plurality of (two) filling spaces R in the material axial direction of the upper beam 30U and the lower beam 30L. are divided into

At least one filling space R can be formed between the pair of wooden surface members 44 .

A plurality of filling spaces R are each filled with filling concrete 60 . The filling concrete 60 is filled from the lower end to the upper end of the filling space R. Unit wall reinforcements 70 are embedded in the filling concrete 60, respectively.

The unit wall reinforcement 70 has a pair of vertical reinforcements 72 and a plurality of horizontal reinforcements 74, which are arranged in a plurality of filling spaces R, respectively. The pair of vertical bars 72 extend in the vertical direction and are spaced apart in the horizontal width direction of the wooden composite wall 40 . The pair of vertical bars 72 are connected by a plurality of horizontal bars 74 .

The plurality of horizontal ribs 74 extend in the horizontal width direction of the wooden composite wall 40 and are arranged at intervals in the vertical direction. Each horizontal reinforcement 74 is arranged over a pair of vertical reinforcements 72 and is joined to the pair of vertical reinforcements 72 by a binding wire, welding, or the like (not shown). The unit wall reinforcement 70 reinforces the filling concrete 60 .

As shown in FIG. 2, the filling concrete 60 and the upper beam 30U are joined via a joining reinforcing bar 80U. The lower end side of the joining reinforcing bar 80U is embedded in the upper portion of the filling concrete 60. As shown in FIG. On the other hand, the upper end side of the joining reinforcing bar 80U is embedded in the upper beam 30U. The upper end side of the joining reinforcing bar 80U is bent in an L shape along the material axis direction of the upper beam 30U.

As shown in FIG. 3, the filling concrete 60 and the lower beam 30L are joined via a joining reinforcing bar 80L. The upper end side of the joining reinforcing bar 80L is embedded under the filling concrete 60 . On the other hand, the lower end side of the joining reinforcing bar 80L is embedded in the lower beam 30L. The lower end side of the joining reinforcing bar 80L is bent in an L shape along the material axis direction of the lower beam 30L.

(action)
Next, the operation of this embodiment will be described.

According to the present embodiment, the frame 10 has a pair of pillars 20 and an upper beam 30U and a lower beam 30L that are constructed across the pair of pillars 20 . A pair of wooden surface members 44 are arranged between the upper beam 30U and the lower beam 30L.

The pair of wooden surface members 44 face each other in the out-of-plane direction of the frame 10 . The pair of wooden surface members 44 are connected by a pair of end partition plates 50 and an intermediate partition plate 54 . A pair of end partition plates 50 and an intermediate partition plate 54 partition the space between the pair of wooden surface members 44 into a plurality of filling spaces R in the material axial direction of the upper beam 30U and the lower beam 30L. .

The plurality of filling spaces R are each filled with filling concrete 60 joined to the upper beam 30U and the lower beam 30L. Thus, a wooden composite wall 40 is formed.

Here, the pair of wooden face members 44 , the pair of end partition plates 50 , and the intermediate partition plate 54 function as forms for the filling concrete 60 . This eliminates the need for temporary installation and removal of forms for the filling concrete 60 . Therefore, it is possible to improve the workability of the wooden composite wall 40 while enhancing the design.

In addition, by connecting the pair of wooden surface members 44 with the pair of end partition plates 50 and the intermediate partition plate 54, the opening of the pair of wooden surface members 44 as a formwork is suppressed when the filling concrete 60 is filled. be able to. Therefore, for example, a separator or the like for connecting the pair of wooden surface members 44 can be omitted, thereby improving workability.

Furthermore, the filling concrete 60 is joined with the upper beam 30U and the lower beam 30L. As a result, seismic force (horizontal force) is transmitted from the upper beam 30U and the lower beam 30L to the filling concrete 60 during an earthquake. The seismic force transmitted to the filling concrete 60 is transmitted to the pair of wooden face members 44 via the pair of end partition plates 50 and middle partition plate 54 . In this way, during an earthquake, not only the filling concrete 60 but also the pair of wooden face members 44 can resist the seismic force, so the earthquake resistance performance of the wooden composite wall 40 is improved.

In particular, the wooden surface material 44 of the present embodiment is made of CLT having high rigidity (surface rigidity). As a result, the earthquake resistance performance of the wooden composite wall 40 is further improved.

Joining reinforcing bars 80U and 80L are embedded in the upper and lower portions of the plurality of filling concretes 60, respectively. By joining each filling concrete 60 to the upper beam 30U and the lower beam 30L by these joining reinforcing bars 80U and 80L, the seismic force is more reliably transmitted from the upper beam 30U and the lower beam 30L to the filling concrete 60. be able to.

In addition, by filling the plurality of filling spaces R with the filling concrete 60 and dividing the filling concrete 60 into a plurality of pieces, the plurality of filling concretes 60 resist the seismic force like a bent column. As a result, in this embodiment, bending deformation of the wooden composite wall 40 is more prominent than when a plurality of filling concretes 60 are integrated, and the toughness of the wooden composite wall 40 is improved. Therefore, the deformability of the wooden composite wall 40 can be enhanced.

A release agent is applied to the inner surfaces 50S of the pair of end partition plates 50 and the surfaces (inner surfaces) 54S on both sides of the intermediate partition plate 54 to facilitate peeling of the filling concrete 60 from these inner surfaces 50S and 54S during an earthquake. You can Thereby, the toughness of the wooden composite wall 40 can be further improved.

The wooden composite wall 40 also has a plurality of wall portions 42 . Each wall portion 42 includes a pair of wooden surface members 44 respectively. In other words, the wooden composite wall 40 includes a plurality of pairs of wooden surface members 44 arranged in the axial direction of the upper beam 30U and the lower beam 30L. A plurality of sets of pairs of wooden surface members 44 are joined together in a state in which the end partition plates 50 provided at the respective ends are overlapped with each other.

By providing the end dividing plates 50 at the ends of the pair of wooden surface members 44 in the adjacent wall portions 42 in this way, the composite wooden wall 40 can be easily expanded as necessary.

(Modification)
Next, a modification of the above embodiment will be described.

In the modification shown in FIG. 5, a plurality of wooden screws 62 are provided on the inner surfaces 44S of the pair of wooden surface members 44. As shown in FIG. A plurality of wooden screws 62 protrude from the inner surfaces 44</b>S of the pair of wooden surface members 44 and are embedded in the filling concrete 60 . Thereby, the shearing force between the pair of wooden surface members 44 and the filling concrete 60 is transmitted via the plurality of wooden screws 62 . Therefore, the earthquake resistance performance of the wooden composite wall 40 is enhanced.

Note that the wooden screw 62 is an example of a shear force transmission portion. In addition, the inner surface 44S of the wooden surface member 44 may be provided with a shear force transmitting portion such as a rib, unevenness, or the like, not limited to the wooden screw 62 .

Moreover, in the modification shown in FIG. 5, metal plates 90 are attached to the inner surfaces 50S of the pair of end partitioning plates 50, respectively. Each metal plate 90 is formed of a steel plate or the like. Further, each metal plate 90 is bent in a C shape along the inner surface 50S of the end partition plate 50 and the inner surface 44S of the pair of wooden surface members 44 in plan cross-sectional view.

Metal plates 90 are attached to the surfaces (inner surfaces) 54S on both sides of the intermediate partition plate 54, respectively. Each metal plate 90 is formed of a steel plate or the like. Further, each metal plate 90 is bent in a C shape along the inner surface 54S of the intermediate partition plate 54 and the inner surface 44S of the pair of wooden surface members 44 in plan cross-sectional view.

A release agent is applied to the surface of the metal plate 90 to which the filling concrete 60 is adhered. This makes it easier for the filling concrete 60 to separate from the pair of end partition plates 50 and the intermediate partition plate 54 during an earthquake. Therefore, the toughness of the wooden composite wall 40 can be further enhanced.

Further, in the above embodiment, the pair of pillars 20 and the wooden composite wall 40 are not joined. However, for example, as in a modified example shown in FIG. 6, the wooden composite wall 40 and the pillar 20 may be joined.

Specifically, in the wooden composite wall 40, the end section plate 50 (see FIG. 4) is not provided at one end portion 44E of the pair of wooden surface members 44 on the pillar 20 side, and the end portion 44E is not provided with the pillar 20 side. is abutted against the side surface 20S of the A pair of positioning members 100 are provided on the outer surface of one end portion 44E of the pair of wooden surface members 44. As shown in FIG. A pair of positioning members 100 are formed of wooden boards such as CLT, and are arranged along one end portion 44E of the pair of wooden surface members 44 .

A pair of positioning members 100 are fixed to the side surface 20S of the pillar 20 with a plurality of screws (concrete screws) 102 or the like. The pair of positioning members 100 suppresses the opening of the one end portion 44E of the pair of wooden surface members 44 when filling the space between the pair of wooden surface members 44 with the filling concrete 60 .

A plurality of anchor bars 110 are provided on the side surface 20S of the column 20. As shown in FIG. The plurality of anchor muscles 110 are arranged at intervals in the vertical direction. A plurality of anchor bars 110 protrude from the side surface 20S of the column 20 and are embedded in the filling concrete 60. As shown in FIG. These anchor bars 110 are connected to the horizontal bars 74 of the unit wall bars 70 by lap joints or the like, for example.

By joining the column 20 and the filling concrete 60 via the anchor bars 110 in this way, the earthquake resistance performance of the wooden composite wall 40 can be enhanced.

In the modified example shown in FIG. 6, the anchor bars 110 are post-installed anchors. Also good.

7, instead of the pair of positioning members 100, the ends 44E of the pair of wooden surface members 44 may be connected via the separator 120. As shown in FIG. The separator 120 suppresses the opening of the one end portion 44E of the pair of wooden surface members 44 when the filling concrete 60 is filled between the pair of wooden surface members 44 .

Further, the synthetic wood wall 40 of the above embodiment has a plurality of wall portions 42 . However, the wooden composite wall 40 only needs to have at least one wall portion 42 .

Further, in the above-described embodiment, the pair of wooden surface members 44 are connected by the pair of the end partition plate 50 and the intermediate partition plate 54 . However, the intermediate partition plate 54 may be provided as required, and can be omitted as appropriate. Moreover, as described above, when the wooden composite wall 40 is joined to the pillar 20, the end partition plate 50 can also be omitted. That is, the pair of wooden surface members 44 can be connected by at least one of the end partition plate 50 and the intermediate partition plate 54 .

Further, in the above-described embodiment, the end partitioning plate 50 is joined to the end faces of the ends 44E of the pair of wooden surface members 44 in an overlapping state. However, similarly to the intermediate partition plate 54, the end partition plate 50 is arranged between the ends 44E of the pair of wooden surface members 44, and the inner surface 44S of the end portions 44E of the pair of wooden surface members 44 has an end partition plate You may join in the state which overlapped the end surface of 50. FIG.

In the above embodiment, the unit wall reinforcing bars 70 and the joining reinforcing bars 80U and 80L are embedded in the filling concrete 60. As shown in FIG. However, the unit wall reinforcing bars 70 and the joining reinforcing bars 80U and 80L may be provided as required and can be omitted as appropriate.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate. It goes without saying that various aspects can be implemented without departing from the scope.

10 Frame 20 Column 30U Upper beam (upper beam)
30L lower beam (lower beam)
44 Wooden surface material 50 End partition plate (partition plate)
54 Intermediate partition plate (partition plate)
60 Filling concrete 80L Joining reinforcing bar 80U Joining reinforcing bar R Filling space arrow X Beam material axial direction arrow Y Out-of-plane direction of frame

Claims (3)

a frame structure having a pair of pillars and upper and lower beams that are installed on the pair of pillars;
a pair of wooden surface members disposed between the upper and lower beams and facing each other in the out-of-plane direction of the frame;
a partition plate that connects the pair of wooden surface materials and divides the space between the pair of wooden surface materials into a plurality of filling spaces in the axial direction of the beam;
Filling concrete filled in the plurality of filling spaces and joined to the upper and lower beams;
Wood-based composite wall construction with A plurality of pairs of wooden face members arranged in the axial direction of the beam,
A plurality of sets of pairs of the wooden face members are joined together with the partition plates provided at the ends thereof being overlapped with each other.
A wood composite wall structure according to claim 1. a joining reinforcing bar embedded in the filling concrete and joining the filling concrete and the beam;
A wooden composite wall structure according to claim 1 or claim 2.

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