JP6846466B2 - Box-shaped building units and buildings - Google Patents

Description

The present invention relates to a box-shaped building unit formed of a panel (CLT panel) made of a cross laminated board (CLT) and a building using the same.

Orthogonal laminated lumber (CLT (Cross Laminated Timber)) is a panel laminated and bonded so that the fiber directions of the plates are orthogonal to each other in each layer. Since CLT panels are orthogonally laminated, their strength is more stable than laminated wood used as a building material, they are less likely to be deformed, they have strength comparable to concrete, and they have excellent heat insulation. There is a feature.

Conventionally, a housing structure using this CLT panel has been proposed. For example, Patent Document 1 describes that a box-shaped panel such as two or more CLT panels is arranged so as to be supported by its own weight, and a building is constructed without using a special connecting tool. It should be noted that Patent Document 1 also describes that a connecting tool such as a hinge may be used, or a convex portion or a concave portion may be provided on the joint surface.

Further, as the joining structure of the CLT panel, for example, in Patent Document 2, a rod-shaped large-diameter binding member, a small-diameter binding member, and an adhesive which extend two or more CLT panels so as to intersect each other and are embedded in the CLT panel are used. The ones that have been joined are listed.

Japanese Patent No. 6271061 Japanese Unexamined Patent Publication No. 2018-9327

The building described in Patent Document 1 enables the building to be constructed without using a special connecting tool, and uses a connecting tool such as a hinge or provides a convex portion or a concave portion on the joint surface. Although it may be possible, basically, the arrangement of the CLT panels is devised so that they are supported by their own weight, and these are only auxiliary positioning, and the joint strength is expected. It's not a thing.

Further, in the joining structure described in Patent Document 2, a buried hole is formed in the CLT panel, and rod-shaped large-diameter and small-diameter binding members are inserted into the buried hole, but the CLT panel is considerably heavy. Therefore, it is necessary to assemble using a crane, and it is very difficult to insert the binding member inserted into the buried hole of one CLT panel into the buried hole of the other CLT panel.

Therefore, it is an object of the present invention to easily join CLT panels to each other to obtain a box-shaped building unit and to provide a building using the box-shaped building unit.

The box-type building unit of the present invention is a box-type building unit formed by arranging CLT panels on each surface of a rectangular body and joining adjacent CLT panels to each other. , The end surface or end surface of the second CLT panel is the surface of the inner main surface of the first CLT panel, and the end surface or end surface of the first CLT panel and the outer main surface of the second CLT panel are surfaces. It is a structure in which they are butted so as to be one and joined by a joining member, and the joining portion by the joining member has a first CLT panel having a timber end surface or a timber end surface and an inner main surface and an outer main surface. The outer main surface side of the CLT panel is opened so as to be wider than the inner main surface side, and the end surface or end surface of the second CLT panel and at least the outer main surface are the end surface or wood of the second CLT panel. The inside of the second CLT panel is opened so as to be wider than the end face side, and a shredded joining member is provided at the opening of the first CLT panel and the opening of the second CLT panel, and the end of the first CLT panel. It is a structure inserted from the surface or wood end surface and the outer main surface side of the second CLT panel.

According to the box-type building unit of the present invention, when CLT panels are arranged on each surface of a rectangular parallelepiped and adjacent CLT panels are joined to each other, the opening of the first CLT panel and the opening of the first CLT panel which are opened outward. When a shredded joining member is inserted into the opening of the 2 CLT panel from the end surface or end surface of the first CLT panel and the outer main surface side of the second CLT panel, the shredded joining member causes the first The CLT panel and the second CLT panel are tightened and joined.

Here, as the shredded joining member, the first member having a shape corresponding to the opening of the first CLT panel and the second member having a shape corresponding to the opening of the second CLT panel are the first CLT panel. It is desirable that they are connected by bolts and nuts that can be tightened from the outer main surface side of. As a result, when the tightening between the first CLT panel and the second CLT panel is weak, the shredded joint member is tightened by tightening the bolts and nuts from the outer main surface side of the first CLT panel. It is possible to firmly tighten the first CLT panel and the second CLT panel.

(1) In the orthogonal portion of each surface of the rectangular body, the timber surface or the timber end surface of the second CLT panel is the timber surface or the timber end surface of the first CLT panel with respect to the inner main surface of the first CLT panel. The structure is such that the outer main surface of the CLT panel 2 is butted so as to be flush with each other and joined by a joining member, and the joint portion by the joining member is the end surface or end surface of the first CLT panel and the inner main surface. The surface and the outer main surface are opened so that the outer main surface side is wider than the inner main surface side of the first CLT panel, and the end surface or end surface of the second CLT panel and at least the outer main surface are formed. , The inside of the second CLT panel is opened so as to be wider than the end surface side or the end surface side of the second CLT panel, and the opening of the first CLT panel and the opening of the second CLT panel are cut into pieces. Since the joining member has a structure inserted from the end surface or end surface of the first CLT panel and the outer main surface side of the second CLT panel, the CLT panels are arranged on each surface of the rectangular body and face outward. By inserting a shredded joining member into the opening of the first CLT panel and the opening of the second CLT panel that are opened, the CLT panels can be easily joined to obtain a box-type building unit. Can be done. In addition, a building can be obtained by connecting a plurality of the box-shaped building units.

(2) The first CLT panel has a first member having a shape corresponding to the opening of the first CLT panel and a second member having a shape corresponding to the opening of the second CLT panel. Due to the configuration connected by bolts and nuts that can be tightened from the outer main surface side of the above, if the tightening between the first CLT panel and the second CLT panel is weak, the outer main of the first CLT panel By tightening the bolts and nuts from the surface side, it is possible to tighten the shredded joint member and firmly tighten the first CLT panel and the second CLT panel.

It is a perspective view of the box-shaped building unit in embodiment of this invention. It is a front view of the box-shaped building unit of FIG. It is a left side view of FIG. It is an exploded perspective view of the joint part of the CLT panel which enlarged the IV part of FIG. It is a perspective view of a joining member. It is an exploded perspective view of the joining member of FIG. It is a top view of the joining member of FIG. It is a front view of the joining member of FIG. It is a bottom view of the joining member of FIG. It is a perspective view of a building using the box-shaped building unit of FIG.

1 is a perspective view of the box-shaped building unit according to the embodiment of the present invention, FIG. 2 is a front view of the box-shaped building unit of FIG. 1, FIG. 3 is a left side view of FIG. 2, and FIG. 4 is FIG. An exploded perspective view of the joint portion of the CLT panel in which the IV portion is enlarged, FIG. 5 is a perspective view of the joint member, FIG. 6 is an exploded perspective view of the joint member of FIG. 5, and FIG. 7 is a plan view of the joint member of FIG. 8 is a front view, and FIG. 9 is a bottom view.

As shown in FIGS. 1 to 3, the box-shaped building unit 1 according to the embodiment of the present invention has CLT panels 10, 11, 12, 13, 14, 15, 16, 17, ... Arranged on surfaces (ceiling surface, floor surface and four side wall surfaces), adjacent CLT panels 10, 11, 12, 13, 14, 15, 16, 17, ... Are joined using a joining member 2 described later. It is formed by doing.

In the orthogonal portion of each surface of this rectangular parallelepiped (box-type building unit 1), the end surface or end surface of the other (second) CLT panel is the first to the inner main surface of one (first) CLT panel. It is a structure in which the end surface or end surface of the CLT panel of 1 and the outer main surface of the second CLT panel are butted and joined so as to be flush with each other. The wood end surface of the CLT panel means the end face in the longitudinal direction of the CLT panel, and the wood end face of the CLT panel means the end face in the lateral direction of the CLT panel.

For example, in the orthogonal portion between the CLT panel 10 on the ceiling surface and the CLT panel 11 on the side wall surface of the box-shaped building unit 1, the wood end surface 11s of the CLT panel 11 is a CLT panel with respect to the inner main surface 10i of the CLT panel 10. The wood end surface 10s of 10 and the outer main surface 11o of the CLT panel 11 are butted so as to be the same, and are joined by the joining member 2. Orthogonal portions of the CLT panel 10 on the ceiling surface and the CLT panel 15 on the side wall surface, the orthogonal portions between the CLT panel 13 on the side wall surface and the CLT panel 14 on the side wall surface, the CLT panel 16 on the side wall surface and the CLT panel 17 on the side wall surface. The same applies to the orthogonal part of. The same applies to the orthogonal portions of the CLT panels on the back side that do not appear in FIG. 1.

The joint portion formed by the joining member 2 is formed so that the end surface or end surface of one (first) CLT panel and the outer main surface are wider on the outer main surface side than on the inner main surface side of the first CLT panel. It is opened so that the end surface or end surface of the other (second) CLT panel and at least the outer main surface are wider inside the second CLT panel than the end surface or end surface side of the second CLT panel. It is opened like this.

For example, as shown in FIG. 4, at the joint between the CLT panel 10 and the CLT panel 11, an opening 10n in which the wood end surface 10s, the inner main surface 10i, and the outer main surface 10o are opened is formed in the CLT panel 10. The CLT panel 11 is formed with an opening 11n in which the wood end surface 11s, the inner main surface 11i, and the outer main surface 11o are opened. The opening 10n is formed to have an inverted isosceles trapezoidal shape in which the upper bottom is longer than the lower bottom when viewed from the wood end surface 10s, that is, the outer main surface 10o side of the CLT panel 10 is wider than the inner main surface 10i side. .. The opening 11n is symmetrical with the opening 10n and has an isosceles trapezoidal shape in which the upper bottom is shorter than the lower bottom when viewed from the outer main surface 11o, that is, inside the CLT panel 11 from the wood end surface 11s side (from the wood end surface 11s). It is formed so that the distant side (lower side in FIG. 4) is wide. The same applies to the joints of the orthogonal portions of other CLT panels.

The joining member 2 is a shredded (butterfly joint) -shaped joining member having a shape corresponding to the openings 10n and 11n as described above. As shown in FIGS. 5 to 9, the joining member 2 includes a first member 21 having a shape corresponding to the opening 10n of the CLT panel 10 and a second member 22 having a shape corresponding to the opening 11n of the CLT panel 11. Consists of. The first member 21 and the second member 22 are connected by a bolt 23 and a nut 24. Two bolts 23 are fixed on the plate 25.

The first member 21 and the second member 22 are formed of CLT. The first member 21 and the second member 22 have a shape corresponding to the openings 10n and 11n. However, the trapezoidal leg portion 21a of the first member 21 and the trapezoidal leg portion 22a of the second member 22 attach the joining member 2 to the outside of the box-shaped building unit 1 (the end surface or wood of the first CLT panel). When inserted from the end surface and the outer main surface side of the second CLT panel) into the openings 10n and 11n, that is, when inserted from the wood end surface 10s of the CLT panel 10 and the outer main surface 11o side of the CLT panel 11 in the example of FIG. In addition, a gradient is provided so that a force for tightening the CLT panels 10 and 11 works.

Further, holes 21b and 22b through which the bolt 23 penetrates are formed in the first member 21 and the second member 22. A counterbore 21d is formed on the trapezoidal bottom portion 21c of the first member 21 so that the nut 24 and the washer 26 do not protrude. A counterbore 22d is formed on the trapezoidal bottom portion 22c of the second member 22 so that the plate 25 does not protrude. The joining member 2 is formed by passing the first member 21 and the second member 22 having the above configuration through the bolt 23 of the plate 25 and tightening them with the nut 24 via the washer 26.

The box-shaped building unit 1 having the above configuration has CLT panels 10, 11, 12, 13, 14, 15, 16, 17, ... On each surface of a rectangular parallelepiped (ceiling surface, floor surface and four side wall surfaces). Arrange the adjacent CLT panels 10, 11, 12, 13, 14, 15, 16, 17, ..., And insert the shredded joining member 2 into the openings 10n, 11n, etc. that are opened outward. It is possible to easily join them by doing so.

In particular, in this box-type building unit 1, when the tightening between the CLT panel 10 and the CLT panel 11 or the like is weak, the joining member 2 is tightened by tightening the bolts 23 and nuts 24 from the outer main surface 10o side of the CLT panel 10. It is possible to tighten the first member 21 and the second member 22 of the above, and to firmly tighten the CLT panel 10 and the CLT panel 11 and the like. By forming the first member 21 and the second member 22 with an elastic member such as rubber, the box-shaped building unit 1 can have a seismic isolation structure.

Further, in the box-shaped building unit 1 in the present embodiment, openings are similarly provided in the CLT panel 11 and the CLT panels 12 and 13 adjacent to each other in each surface of the rectangular parallelepiped, and the box-shaped building unit 1 is joined by using the joining member 2. The same applies to the joining of the CLT panel 15 and the CLT panels 14 and 16.

Then, it is also possible to construct a building by connecting a plurality of the box-shaped building units 1 as shown in FIG.

The present invention is useful as a box-shaped building unit in which CLT panels are joined to each other and a building using the same.

1 Box-shaped building unit 2 Joining members 10, 11, 12, 13, 14, 15, 16, 17 CLT panel 21 First member 22 Second member

Claims (5)

A box-type building unit having an orthogonal panel joining structure, wherein the orthogonal panel joining structure includes a first CLT panel, a second CLT panel orthogonal to the first CLT panel, and a joining member. e,
The end surface or end surface of the second CLT panel with respect to the inner main surface of the first CLT panel, the end surface or end surface of the first CLT panel, and the outer main surface of the second CLT panel. It is a structure in which and are butted so as to be flush with each other and joined by the joining member.
In the joint portion made of the joining member, the end surface or end surface of the first CLT panel and the inner main surface and the outer main surface are wider on the outer main surface side than on the inner main surface side of the first CLT panel. The inside of the second CLT panel is larger than the end surface or end surface side of the second CLT panel so that the end surface or end surface of the second CLT panel and at least the outer main surface are aligned with each other. It is opened so as to be wide, and the joining member is connected to the opening of the first CLT panel and the opening of the second CLT panel, and the end surface or end surface of the first CLT panel and the second CLT panel. inserted structural der from the outer main surface of the is,
A ceiling surface CLT panel constituting a ceiling surface and a side wall surface CLT panel forming a side wall surface are provided.
The first side wall CLT panel, the second side wall CLT panel, the third side wall CLT panel, and the fourth side wall CLT, respectively, in which the side wall surface CLT panel constitutes the first side wall surface to the fourth side wall surface of the box-shaped building unit. Including panels
The first side wall CLT panel is joined to the second side wall CLT panel and the fourth side wall CLT panel by the orthogonal panel joining structure, respectively.
The third side wall CLT panel is joined to the second side wall CLT panel and the fourth side wall CLT panel by the orthogonal panel joining structure, respectively.
The ceiling surface CLT panel, the first side wall CLT panel, the second side wall CLT panel, the third side wall CLT panel, and the fourth side wall CLT panel are each joined by the orthogonal panel joining structure.
The first side wall CLT panel includes at least one side first side wall CLT panel and the other side first side wall CLT panel for joining the ceiling surface and the bottom surface of the box-shaped building unit on both sides of the first side wall surface. ,
The second side wall CLT panel has at least one side second side wall CLT panel and the other side second side wall CLT panel that join the ceiling surface and the floor surface of the box-shaped building unit on both sides of the second side wall surface. Prepare,
The third side wall CLT panel has at least one side third side wall CLT panel and the other side side third side wall CLT panel that join the ceiling surface and the floor surface of the box-shaped building unit on both sides of the third side wall surface. Prepare,
The fourth side wall CLT panel has at least one side fourth side wall CLT panel and the other side side fourth side wall CLT panel that join the ceiling surface and the floor surface of the box-shaped building unit on both sides of the fourth side wall surface. Prepare,
The other-side first side wall CLT panel and the one-side fourth side wall CLT panel are joined by the orthogonal panel joining structure.
The other side second side wall CLT panel and the one side first side wall CLT panel are joined by the orthogonal panel joining structure.
The other side third side wall CLT panel and the one side second side wall CLT panel are joined by the orthogonal panel joining structure.
Wherein the other side fourth side wall CLT panel and the one side third sidewall CLT panels, that have been joined by the orthogonal panel joint structure, a box-type building units. The box-shaped building unit according to claim 1, which is a building for a residential structure. Claim 1 or 2 in which the opening of the second CLT panel of the joint portion by the joining member is such that the end surface or end surface of the second CLT panel and the inner main surface and the outer main surface are opened. box-shaped building unit according to. The box-shaped building unit according to any one of claims 1 to 3, wherein the joint member has a julienne shape. A building including the box-shaped building unit according to any one of claims 1 to 4.

Images