JP2024034968A - Architectural structure - Google Patents

Abstract

To provide an architectural structure having wooden roof support structures capable of ensuring horizontal rigidity of a roof surface at low cost.SOLUTION: An architectural structure 1 has a first wall 2, a second wall 3, wooden roof support structures 4 disposed between the first wall 2 and the second wall 3, and a roof 5 supported by the roof support structures 4. The roof support structure 4 has four wooden truss bodies 11 to 14 that have upper chords 11a, 13a, lower chords 11b, 13b connected to the upper chords 11a, 13a at distal ends, and a binding material 11c for connecting the upper chords 11a, 13a and the lower chords 11b, 13b, respectively. The four truss bodies 11 to 14 are connected to each other at distal ends, and connected to the first wall 2 and the second wall 3 so as to be inclined with respect to the horizontal direction, and disposed in X-shaped state in plan view between the first wall 2 and the second wall 3 of the architectural structure 1.SELECTED DRAWING: Figure 2

Description

Patent Law Article 30, Paragraph 2 application filed On May 24, 2022, Obayashi Corporation and Naigai Technos Co., Ltd. will hold a building tour at 1150 Kamekubo, Fujimino City, Saitama Prefecture, and provide an explanation of the building. Published by disclosing the materials.

The present invention relates to a building having a wooden roof support structure.

In recent years, there has been a demand for the spread of wooden buildings in order to promote the use of wood.

For example, Patent Document 1 describes a building that employs a wooden roof support structure as a roof support structure that is provided between a pair of walls and supports a roof.

Patent No. 6202465

Wooden roof support structures are increasingly being used in long-span buildings such as warehouses and factories that require large column-free spaces.

However, with the conventional wooden roof support structure described above, it is difficult to ensure sufficient horizontal rigidity of the roof surface in long-span buildings. There was a problem in that the structure was complicated, such as the need to use hardware such as metal plates, and the cost of the building was high.

The present invention has been made in view of such problems, and its purpose is to provide a building with a wooden roof support structure that can ensure the horizontal rigidity of the roof surface at a low cost. be.

The building of the present invention includes a first wall, a second wall, a wooden roof support structure provided between the first wall and the second wall, and a roof supported by the roof support structure. wherein the roof support structure comprises four wooden members each comprising an upper chord member, a lower chord member connected to the upper chord member at a tip, and a bundle member connecting the upper chord member and the lower chord member. The four truss bodies have distal ends connected to each other, and proximal ends connected to the first wall or the second wall at an angle with respect to the horizontal direction. It is characterized in that it is arranged in an X-shape in plan view between the wall and the second wall.

In the building of the present invention, in the above configuration, it is preferable that the first wall and the second wall are each made of reinforced concrete.

In the building of the present invention, in the above configuration, a connecting portion between a tip of the lower chord member connected to the first wall and a tip of the lower chord member connected to the second wall is provided with the first wall. It is preferable that the lower chord member is disposed above a straight line connecting the base end of the lower chord member connected to the wall and the base end of the lower chord member connected to the second wall.

According to the present invention, it is possible to provide a building with a wooden roof support structure capable of ensuring horizontal rigidity of the roof surface at low cost.

FIG. 1 is a cross-sectional side view of a building according to an embodiment of the present invention. 2 is a diagram showing the arrangement of truss bodies in the roof support structure shown in FIG. 1. FIG. 2 is an enlarged view showing one truss body side of the roof support structure shown in FIG. 1. FIG. FIG. 2 is an enlarged view of the other truss body side of the roof support structure shown in FIG. 1; FIG. 3 is an enlarged plan view of a connecting portion of the tips of four truss bodies. 6 is a sectional view taken along line AA in FIG. 5. FIG. (a) is a plan view of the wooden structural member constituting the upper and lower chord members, (b) is a side view of the wooden structural member shown in (a) of the same figure, and (c) is the wooden structure shown in (a) of the same figure. FIG. 3 is a sectional view perpendicular to the longitudinal direction of the member. It is a figure showing four manufactured truss bodies. FIG. 4 is a diagram showing a state in which four truss bodies are arranged in an X-shape between a first wall and a second wall. FIG. 3 is a diagram showing a state in which a roof support structure is constructed by connecting the tips of four truss bodies arranged in an X-shape between a first wall and a second wall to a bonding material. It is a figure which shows the 1st truss half body and the 2nd truss half body which form a truss body in a divided state.

Hereinafter, a building 1 according to an embodiment of the present invention will be illustrated in detail with reference to the drawings.

The building 1 shown in FIG. 1 has a first wall 2, a second wall 3, a wooden roof support structure 4, and a roof 5. The building 1 can be used, for example, as a warehouse or a factory, and has a column-free space 6 extending between a roof 5 and a floor 7 between a first wall 2 and a second wall 3. have.

The building 1 further includes a pair of third walls 8 (only one is shown in FIG. 1) perpendicular to the first wall 2 and the second wall 3, and a column-free space 6 is formed on all sides by the first wall. It is also possible to have a closed structure surrounded by the second wall 2, the second wall 3, and a pair of third walls 8.

The first wall 2 and the second wall 3 are arranged to face each other with a predetermined interval. The distance between the first wall 2 and the second wall 3 is a large span of, for example, about 28 m in order to form a wide column-free space 6.

In this embodiment, the first wall 2 and the second wall 3 are each made of reinforced concrete (RC construction). By making the first wall 2 and the second wall 3 of reinforced concrete construction, the roof support structure 4 is made of wood, and the first wall 2 and the second wall 3 are made of fireproof structure, so that the building 1 can be protected. Fire resistance performance can be improved.

The first wall 2 and the second wall 3 are not limited to reinforced concrete construction, and may be constructed of other materials such as wooden construction.

The roof 5 is plate-shaped, spans between the first wall 2 and the second wall 3, is supported by the roof support structure 4, and covers the column-free space 6 above.

In this embodiment, the roof 5 is composed of wooden heat insulating panels. In this case, the roof 5 may have a configuration in which a plurality of heat insulating panels are arranged side by side in the extending direction of the first wall 2 and the second wall 3 in accordance with the span of the roof support structure 4. By making the roof 5 composed of wooden heat insulating panels, the wooden roof support structure 4 and the roof 5 appear on the inside of the ceiling of the building 1, thereby enhancing the aesthetic appearance of the building 1. can.

The roof 5 is not limited to being made of wooden heat insulating panels, but may be made of other materials.

As shown in FIGS. 1 and 2, a wooden roof support structure 4 is provided between a first wall 2 and a second wall 3. As shown in FIGS. In this embodiment, a plurality of sets of roof support structures 4 are provided side by side in the extending direction of the first wall 2 and the second wall 3. The plurality of roof support structures 4 are supported by the upper end portions of the first wall 2 and the second wall 3, respectively, and are spanned between the first wall 2 and the second wall 3. , has the function of a beam that supports the roof 5 from below. That is, the first wall 2, the second wall 3, and the four sets of roof support structures 4 constitute the roof frame of the building 1.

As shown in FIG. 2, each roof support structure 4 has four wooden truss bodies 11-14.

As shown in FIG. 3, the truss body 11 connected to the first wall 2 includes an upper chord member 11a, a lower chord member 11b, and a bundle member 11c.

The upper chord member 11a is an elongated member with a rectangular cross section that extends straight along the roof 5, and its base end in the longitudinal direction (the left end in FIG. 3) is disposed at the upper end of the first wall 2, and the base end thereof is located at the upper end of the first wall 2. is fixed to the upper end of the first wall 2 by a plurality of anchor bolts 15.

The lower chord member 11b is an elongated member with a rectangular cross section that extends straight, is arranged obliquely with respect to the longitudinal direction of the upper chord member 11a, and is connected to the upper chord member 11a at its tip. The base end (left end in FIG. 3) of the lower chord member 11b in the longitudinal direction is in contact with the inner surface of the first wall 2 at a predetermined distance below the upper end of the first wall 2, and the plurality of anchor bolts 16 are connected to the first wall at the base end. It is fixed to the inner surface of the wall 2.

The bundle member 11c is a columnar member with a rectangular cross section that extends straight, and is arranged along the vertical direction between the upper chord member 11a and the lower chord member 11b, and connects the upper chord member 11a and the lower chord member 11b. In this embodiment, a plurality of (four) bundle members 11c are arranged between the upper chord member 11a and the lower chord member 11b, parallel to each other and at a predetermined interval in the longitudinal direction of the upper chord member 11a to the lower chord member 11b. It is being Note that it is sufficient that at least one bundle material 11c is provided.

In this embodiment, a plurality of bundle members 11c are provided between the upper chord member 11a and the lower chord member 11b, and between a pair of adjacent bundle members 11c, one of the bundle members closer to the first wall 2 is provided. A diagonal member 11d is provided that is connected to a connecting portion between the bundle member 11c and the lower chord member 11b, and to a connecting portion between the other bundle member 11c and the upper chord member 11a that is further away from the first wall 2. With such a configuration, the rigidity or strength of the truss body 11 against loads in the vertical direction can be increased.

As shown in FIG. 2, the truss body 11 is connected at its base end to the first wall 2 at an angle with respect to the horizontal direction, and in a direction perpendicular to the first wall 2 and the second wall 3. It extends obliquely to the In this embodiment, the inner surface of the first wall 2 is provided with a columnar part 9 having a support surface that slopes from one side in the horizontal direction to the other side, and the truss body 11 is attached to the columnar part 9. connected.

Although detailed description will be omitted, the truss body 12 has the same configuration as the truss body 11. As shown in FIG. 2, the truss body 12 is connected to the first wall 2 at its base end so as to be inclined in the opposite direction to the horizontal direction from the truss body 11. The truss body 11 extends obliquely in the opposite direction to the direction perpendicular to the wall 3 of the truss body 11.

As shown in FIG. 4, the truss body 13 connected to the second wall 3 includes, like the truss bodies 11 and 12, an upper chord member 13a, a lower chord member 13b, and a bundle member 13c.

Like the upper chord member 13a, the upper chord member 13a is an elongated member with a rectangular cross section that extends straight along the roof 5, and its base end in the longitudinal direction (the right end in FIG. 4) is located at the upper end of the second wall 3. The base end thereof is fixed to the upper end of the second wall 3 by a plurality of anchor bolts 17 .

The lower chord member 13b is an elongated member with a rectangular cross section that extends straight, is arranged obliquely with respect to the longitudinal direction of the upper chord member 13a, and is connected to the upper chord member 13a at its tip. The base end (right end in FIG. 4) of the lower chord member 13b in the longitudinal direction is in contact with the inner surface of the second wall 3 at a predetermined distance below from the upper end of the second wall 3. It is fixed to the inner surface of the wall 3.

The bundle member 13c is a columnar member with a rectangular cross section that extends straight, and is arranged along the vertical direction between the upper chord member 13a and the lower chord member 13b to connect the upper chord member 13a and the lower chord member 13b. In this embodiment, a plurality of (four) bundle members 13c are arranged between the upper chord member 13a and the lower chord member 13b, parallel to each other and at a predetermined interval in the longitudinal direction of the upper chord member 13a to the lower chord member 13b. It is being Note that it is sufficient that at least one bundle material 13c is provided.

In this embodiment, a plurality of bundle members 13c are provided between the upper chord member 13a and the lower chord member 13b, and between a pair of adjacent bundle members 13c, one of the bundle members closer to the second wall 3 is provided. A diagonal member 13d is provided that is connected to a connecting portion between the bundle member 13c and the lower chord member 13b, and to a connecting portion between the other bundle member 13c and the upper chord member 13a that is further away from the second wall 3. With such a configuration, the rigidity or strength of the truss body 13 against loads in the vertical direction can be increased.

As shown in FIG. 2, the truss body 13 is connected at its base end to the second wall 3 at an angle with respect to the horizontal direction, and is arranged in line with the truss body 11 in plan view. ing. In this embodiment, the inner surface of the second wall 3 is also provided with a columnar portion 10 having a support surface that slopes from one side in the horizontal direction to the other side, and the truss body 13 is attached to the columnar portion 10. connected.

Although detailed description will be omitted, the truss body 14 has the same configuration as the truss body 13. As shown in FIG. 2, the truss body 14 is connected to the second wall 3 at its base end so as to be inclined in the opposite direction to the truss body 13 with respect to the horizontal direction. They are arranged in a straight line.

The four truss bodies 11 to 14 are connected to each other at their tips.

In this embodiment, as shown in FIGS. 5 and 6, the tips of the four truss bodies 11 to 14 are connected to the bonding material 20, so that they are connected to each other via the bonding material 20. ing. The joining material 20 is a wooden plate of a predetermined length, and is arranged along the upper chord members 11a and 13a, and is connected to the tips of the four truss bodies 11 to 14 using a plurality of bolts 21.

Note that a configuration may also be adopted in which the tips of the four truss bodies 11 to 14 are directly connected to each other using a fastening member such as a bolt 21 without using the bonding material 20.

As described above, in the building 1 of the present embodiment, the roof support structure 4 has four truss bodies 11 to 14 arranged in an X-shape in plan view, with the upper chord members 11a and 13a respectively extending along the lower surface of the roof 5. The configuration is as follows. With this configuration, the truss bodies 11 to 14 can be formed in an X-shape while being made of inexpensive wood that is commonly available without using expensive parts such as metal parts such as connecting plates. Due to the horizontal bracing effect of the four truss bodies 11 to 14 arranged, horizontal rigidity on the roof surface of the roof support structure 4 can be increased. Therefore, a building 1 equipped with a wooden roof support structure 4 capable of ensuring horizontal rigidity of the roof surface can be provided at low cost.

Furthermore, by making the roof support structure 4 have a configuration in which the four truss bodies 11 to 14 are arranged in an X-shape in plan view, the roof support structure 4 has a beautiful appearance that is visible from the column-free space 6 of the building 1. Or the design quality can be improved.

Furthermore, in this embodiment, the first wall 2 and the second wall 3 are each made of reinforced concrete, and a wooden roof support structure 4 is provided between the first wall 2 and the second wall 3. Therefore, while increasing the fire resistance performance of the building 1, the horizontal load applied to the roof 5 is supported by the first wall 2 and the second wall 3, and the roof support structure 4 supports only the vertical load of the roof 5. can do. Thereby, the stress on the truss bodies 11 to 14 can be reduced and the cross section thereof can be slimmed down.

In the building 1 of the present embodiment, the roof support structure 4 has a triangular cantilever structure formed by the truss bodies 11 and 12 connected to the first wall 2, and the truss bodies 11 and 12 connected to the second wall 3. The bodies 13 and 14 constitute a triangular cantilever, and these cantilevers are hinged at the center of the span between the first wall 2 and the second wall 3.

On the other hand, as shown in FIG. 1, in this embodiment, the tips of the lower chord members 11b of the truss bodies 11 and 12 connected to the first wall 2 and the ends of the lower chord members 11b of the truss bodies 13 and 14 connected to the second wall 3 are The connecting portion P with the tip of the lower chord member 13b is the lower chord of the truss body 13, 14 that is connected to the base end of the lower chord member 11b of the truss body 11, 12 connected to the first wall 2 and the second wall 3. It is arranged above the straight line L connecting the base end of the material 13b. That is, the lower chord member 11b of the truss bodies 11, 12 connected to the first wall 2 and the lower chord member 13b of the truss bodies 13, 14 connected to the second wall 3 are similar to the first wall 2 in side view. It is arranged so as to form a V-shape with a three-point hinge between it and the second wall 3.

With this configuration, if an earthquake force greater than expected is applied to the building 1 and the anchor bolts 15 and 17 break, the upper chord members 11a and 13a are no longer able to bear the load applied from the roof 5. However, the lower chord members 11b and 13b of the truss bodies 11 to 14 are arranged so as to form a V-shape with a three-point hinge between the first wall 2 and the second wall 3 when viewed from the side. By having a high resistance to damage, the roof 5 can be prevented from collapsing.

As shown in FIG. 7, the upper chord members 11a and 13a and the lower chord members 11b and 13b of the truss bodies 11 to 14 are connected in the longitudinal direction at joint portions J1 to J3, respectively, and mutually connect the joint portions J1 to J3 in the longitudinal direction. A wooden structural member 34 can be used in which a plurality of laminated veneer materials 30, 31, and 32 stacked in a staggered manner are integrated with a binding material 33. In this embodiment, the wooden structural member 34 has a three-layer structure in which three veneer laminated materials 30, 31, and 32 are laminated.

That is, the laminated veneer material 30 is a plate shape with a predetermined length shorter than the upper chord members 11a, 13a or the lower chord members 11b, 13b, and the plurality of laminated veneer materials 30 are connected in the longitudinal direction at the joint portion J1. This constitutes the first layer of the wooden structural member 34. The laminated veneer material 31 has a plate shape with a predetermined length shorter than the upper chord materials 11a, 13a or the lower chord materials 11b, 13b, and a plurality of laminated veneer materials 31 are connected in the longitudinal direction at the joint portion J2 to form a wooden material. It constitutes the second layer of the structural member 34. Here, the joint portion J2 of the veneer laminated material 31 is arranged to be shifted in the longitudinal direction with respect to the joint portion J1 of the veneer laminated material 30. The laminated veneer material 32 is in the form of a plate with a predetermined length shorter than the upper chord materials 11a, 13a or the lower chord materials 11b, 13b, and the plurality of laminated veneer materials 32 are connected in the longitudinal direction at the joint portion J3, and are made of wood. It constitutes the third layer of the structural member 34. Here, the joint portion J3 of the laminated veneer material 32 is disposed shifted in the longitudinal direction with respect to both the joint portion J1 of the laminated veneer material 30 and the joint portion J2 of the laminated veneer material 32.

The laminated veneer materials 30, 31, and 32 are, for example, LVL (Laminated Veneer), which is constructed by laminating a plurality of wooden veneers with the fiber directions aligned, applying an adhesive, bonding them together, and compressing them. Lumber) can be used. By using LVL, which is inexpensive and easily available, as the laminated veneer materials 30, 31, and 32, the cost of the roof support structure 4 can be further reduced.

Furthermore, by integrating the veneer laminates 30, 31, and 32 using the binding material 33, it is possible to eliminate the need for the work of integrating the veneer laminates 30, 31, and 32 using adhesive, and to create a wooden structural member. 34 costs can be reduced. As the binding material 33, a plurality of high strength screws can be used. By using a plurality of screws (high strength screws) as the binding material 33, it becomes unnecessary to form a hole in the veneer laminated materials 30 to 32, and the cost of the wooden structural member 34 can be further reduced.

The wooden structural member 34 has a structure in which the respective layers of laminated veneer materials 30 to 32 are laminated with their joint parts J1 to J3 shifted in the longitudinal direction, so that the parts where the joint parts J1 to J3 are provided are Also, the cross-sectional area of the veneer laminates 30 to 32 of the layers other than those having the joint portions J1 to J3 is secured, and the strength is high.

Therefore, by constructing the long upper chord members 11a, 13a or lower chord members 11b, 13b corresponding to long spans with the wooden structural member 34 of the above configuration, the upper chord members 11a, 13a can be used without using hardware such as connecting plates. The lower chord members 11b and 13b can have a length corresponding to a long span and a desired rigidity. Moreover, since the wooden structural member 34 is formed of the inexpensive laminated veneer material 31 and the binding material 33, the cost of the roof support structure 4 can be further reduced.

The wooden structural member 34 is not limited to the three-layer structure described above, but may have a two-layer structure in which two veneer laminates are laminated, or a multi-layer structure in which four or more veneer laminates are laminated.

When the upper chord members 11a, 13a to the lower chord members 11b, 13b are formed of the wooden structural members 34 having the above structure, the second layer of the veneer laminated material 31 of the upper chord members 11a, 13a to the lower chord members 11b, 13b is cut out. By inserting the tenons provided at both ends of the bundle materials 11c, 13c or diagonal members 11d, 13d into the mortise holes and fixing them with binding materials such as multiple screws, the bundle materials 11c, 13c or The diagonal member 11d may be connected to the upper chord members 11a, 13a to the lower chord members 11b, 13b. As a result, without using hardware such as a connecting plate, and while securing the cross-sectional area of two pieces for the upper chord members 11a, 13a or lower chord members 11b, 13b to ensure their rigidity, the bundle members 11c, 13c or The diagonal members 11d and 13d can be firmly connected to the upper chord members 11a and 13a to the lower chord members 11b and 13b.

The roof support structure 4 having the above configuration can be constructed, for example, by the building construction method of the present embodiment described below.

First, as shown in FIG. 8, truss bodies 11 to 14 having the above configuration are manufactured. The number of truss bodies 11 to 14 corresponding to the number of roof support structures 4 used in the building 1 is manufactured. The truss bodies 11 to 14 may be manufactured in a factory located at a location different from the construction site of the building 1, and transported from the factory to the construction site using a truck or the like. By manufacturing the truss bodies 11 to 14 in a factory, the truss bodies 11 to 14 with higher dimensional accuracy can be manufactured more easily.

Next, as shown in FIG. 9, the truss bodies 11 and 12 are connected to the first wall 2 at their base ends at an angle with respect to the horizontal direction, and the truss bodies 13 and 14 are connected at their base ends, respectively. These four truss bodies 11 to 14 are connected to the second wall 3 at an angle with respect to the horizontal direction, and are arranged in an X-shape in plan view.

Next, as shown in FIG. 10, a bonding material 20 is placed between the tips of the four truss bodies 11 to 14, and the tips of the four truss bodies 11 to 14 are connected to the bonding material 20, respectively. As a result, a roof support structure 4 having four truss bodies 11 to 14 is formed.

As described above, according to the building construction method of the present embodiment, the four truss bodies 11 to 14 are connected to the first wall 2 to the second wall 3 at the base end at an angle with respect to the horizontal direction. After arranging them in an X-shape in plan view between the first wall 2 and the second wall 3, the tips of the four truss bodies 11 to 14 are connected to the bonding material 20 to form a roof support structure. 4, the tips of the four truss bodies 11 to 14 can be easily connected, and an X The roof support structure 4 including the four truss bodies 11 to 14 arranged in a letter shape can be constructed easily and in a short construction period.

The truss bodies 11 to 14 constituting the roof support structure 4 can each have a unitized structure formed by connecting a first truss half and a second truss half. FIG. 11 shows a first truss half 11A and a second truss half 11B forming the truss body 11 in a divided state.

The first truss half body 11A includes an upper chord half body 11a1, a lower chord half body 11b1 connected to the upper chord half body 11a1 at the tip, and a first bundle connecting the upper chord half body 11a1 and the lower chord half body 11b1. It is equipped with a material 11c. The upper chord half body 11a1 is the part on the tip side of the upper chord member 11a divided in the longitudinal direction at the joint parts J1 to J3 of each layer, and the lower chord half body 11b1 is the part on the longitudinal direction at the joint parts J1 to J3 of each layer. This is the part on the tip side of the lower chord member 11b that has been divided into two parts.

The second truss half body 11B includes an upper chord half body 11a2, a lower chord half body 11b2 arranged below the upper chord half body 11a2, and a third truss half body 11B that connects the upper chord half body 11a2 and the lower chord half body 11b2. 2 bundle materials 11c are provided. The upper chord half body 11a2 is the part on the proximal end side of the upper chord member 11a that is divided in the longitudinal direction at the joint parts J1 to J3 of each layer, and the lower chord half body 11b2 is the part on the proximal end side of the upper chord member 11a that is divided in the longitudinal direction at the joint parts J1 to J3 of each layer. This is the portion on the proximal end side of the lower chord member 11b divided in the direction. Further, the second truss half 11B has two diagonal members 11d arranged between adjacent bundle members 11c.

The truss body 11 is formed by connecting a first truss half body 11A and a second truss half body 11B. The diagonal member 11d between the first truss half 11A and the second truss half 11B is separate from the first truss half 11A and the second truss half 11B, and When connecting the two truss halves 11B, it is arranged between adjacent bundle members 11c and connected to the first truss half 11A and the second truss half 11B.

When the truss bodies 11 to 14 are formed by connecting the first truss half body 11A and the second truss half body 11B, the construction method for the building described above is such that the truss bodies 11 to 14 are Before the manufacturing step, a step of manufacturing a first truss half having the above configuration, a step of manufacturing a second truss half having the above configuration, and a first truss half and a second truss half are performed. It may further include a step of connecting the truss bodies 11 to 14 to produce the truss bodies 11 to 14.

In this case, the first truss half and the second truss half are manufactured at a factory located at a location different from the construction site of Building 1, and transported from the factory to the construction site using a truck or the like. In this step, the first truss half body and the second truss half body can be assembled to produce the truss bodies 11 to 14. This makes it possible to easily manufacture the truss bodies 11 to 14 with higher dimensional accuracy while facilitating transportation from the factory to the construction site.

The present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the gist thereof.

1 Building 2 First wall 3 Second wall 4 Roof support structure 5 Roof 6 Columnless space 7 Floor 8 Third wall 9 Column part 10 Column part 11 Truss body 11A First truss half body 11B Second truss half Body 11a Upper chord member 11a1 Upper chord member half 11a2 Upper chord member half 11b Lower chord member 11b1 Lower chord member half 11b2 Lower chord member half 11c Bundle member 11d Diagonal member 12 Truss body 13 Truss body 13a Upper chord member 13b Lower chord member 13c Bundle member 13d Diagonal Material 14 Truss body 15 Anchor bolt 16 Anchor bolt 17 Anchor bolt 18 Anchor bolt 20 Joining material 21 Bolt 30 Laminated veneer material 31 Laminated veneer material 32 Laminated veneer material 33 Binding material 34 Wooden structural member P Connecting portion L Straight line J1 Joint Part J2 Joint part J3 Joint part

Claims (3)

A building having a first wall, a second wall, a wooden roof support structure provided between the first wall and the second wall, and a roof supported by the roof support structure, ,
The roof support structure is
It has four wooden truss bodies each including an upper chord member, a lower chord member connected to the upper chord member at the tip, and a bundle member connecting the upper chord member and the lower chord member,
The four truss bodies are connected to each other at their distal ends and are connected at their proximal ends to the first wall or the second wall at an angle with respect to the horizontal direction, so that the first wall and the second wall A building characterized by being arranged in an X-shape in plan view between the walls of the building. The building according to claim 1, wherein the first wall and the second wall are each made of reinforced concrete. A connecting portion between a tip of the lower chord connected to the first wall and a tip of the lower chord connected to the second wall is a proximal end of the lower chord connected to the first wall. The building according to claim 1 or 2, wherein the building is located above a straight line connecting the base end of the lower chord member connected to the second wall.

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