JP7099668B2 - Jump-out structure of laminated floor slab - Google Patents

Jump-out structure of laminated floor slab Download PDF

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JP7099668B2
JP7099668B2 JP2017143801A JP2017143801A JP7099668B2 JP 7099668 B2 JP7099668 B2 JP 7099668B2 JP 2017143801 A JP2017143801 A JP 2017143801A JP 2017143801 A JP2017143801 A JP 2017143801A JP 7099668 B2 JP7099668 B2 JP 7099668B2
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floor slab
deck
laminated
wood
floor
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JP2019027021A (en
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まりな 國府田
由典 松原
晃治 福本
雄機 寺村
奈緒 西村
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Takenaka Corp
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Description

本発明は、積層床版の跳ね出し構造に関する。 The present invention relates to a pop-out structure of a laminated deck .

バルコニーや外廊下等の跳ね出し部を有する建物が知られている。例えば特許文献１には、コンクリート造の床部によって跳ね出し部が形成された建物が開示されている。 Buildings with protruding parts such as balconies and outer corridors are known. For example, Patent Document 1 discloses a building in which a protruding portion is formed by a concrete floor portion.

特開平７－２１７１９９号公報Japanese Unexamined Patent Publication No. 7-217199

ここで近年、意匠性や軽量化の観点から、木質の床版を利用して建物の床を構築することが望まれている。しかし、木質の床版はコンクリート造の床版と比較して耐力が小さいため、木質の床版を利用して跳ね出し部を形成することは困難であった。 Here, in recent years, from the viewpoint of designability and weight reduction, it has been desired to construct a building floor using a wooden floor slab. However, since the wooden floor slab has a smaller yield strength than the concrete floor slab, it is difficult to form a protruding portion by using the wooden floor slab.

本発明は上記事実に鑑み、木質の床版を利用して跳ね出し部を形成することができる積層床版の跳ね出し構造を提供することを目的とする。 In view of the above facts, it is an object of the present invention to provide a pop-out structure of a laminated floor slab capable of forming a pop-out portion by using a wooden floor slab.

請求項１に記載の発明は、積層床版の跳ね出し構造であって、第１方向に架設され、前記第１方向の両端部が柱、梁、又は壁に支持されると共に、前記第１方向が強軸方向とされたＣＬＴからなる第１床版と、前記第１床版と一体形成され、前記柱、梁、又は壁から前記第１方向と直交する前記第１床版における弱軸方向である第２方向に跳ね出す延長床版と、前記第１床版、及び前記延長床版に積層されて接合され、前記延長床版と共に前記柱、梁、又は壁から前記第２方向へ跳ね出し、前記第２方向を強軸方向とした単層の無垢材からなる木質の第２床版と、を有する。 The invention according to claim 1 is a projecting structure of a laminated deck, which is erected in a first direction, and both ends of the first direction are supported by columns, beams, or walls, and the first. A weak axis in the first deck, which is integrally formed with the first deck and is integrally formed with the first deck made of CLT whose direction is the strong axis direction, and is orthogonal to the first direction from the pillar, beam, or wall. An extended deck that protrudes in the second direction, which is the direction, is laminated and joined to the first deck and the extended deck, and together with the extended deck , from the pillar, beam, or wall to the second direction . It has a second floor slab made of a single layer of solid wood that is ejected and has the second direction as a strong axis direction .

上記構成によれば、第１方向の両端部が支持され第１方向が強軸方向とされたＣＬＴからなる第１床版が第１方向に架設され、第１床版には、柱、梁、又は壁から第１方向と直交する第１床版における弱軸方向である第２方向に跳ね出す延長床版が一体形成されている。
そして、第１床版、及び延長床版に積層されて接合された第２方向を強軸方向とした単層の無垢材からなる木質の第２床版が第１方向と直交する第２方向に跳ね出している。
このため、積層床版に生じる第１方向の応力を第１床版で負担しつつ、第２方向の応力を第２床版で負担することができ、ＣＬＴからなる木質の第１床版を利用して木質の第２床版によって跳ね出し部を形成することができる。 According to the above configuration, a first deck made of CLT in which both ends in the first direction are supported and the first direction is the strong axis direction is erected in the first direction, and columns and beams are provided on the first deck. Or, an extended deck that protrudes from the wall in the second direction, which is the weak axis direction in the first deck orthogonal to the first direction, is integrally formed.
Then, the second floor slab made of a single layer of solid wood having the second direction laminated and joined to the first floor slab and the extended floor slab as the strong axis direction is in the second direction orthogonal to the first direction. It's jumping out.
Therefore, the stress in the first direction generated in the laminated deck can be borne by the first deck, while the stress in the second direction can be borne by the second deck. It can be utilized to form a protruding portion by a second floor slab made of wood .

上記構成によれば、第２床版が木質とされているため、木質の積層床版によって跳ね出し部を形成することができる。 According to the above configuration, since the second deck is made of wood, the protruding portion can be formed by the laminated deck made of wood.

請求項２に記載の積層床版の跳ね出し構造は、請求項１に記載の積層床版の跳ね出し構造であって、前記第１床版及び前記第２床版の少なくとも一方の接合面とは反対側の面には、木質の防火被覆材が設けられている。 The pop-up structure of the laminated floor slab according to claim 2 is the pop-out structure of the laminated floor slab according to claim 1, and is with at least one joint surface of the first floor slab and the second floor slab. On the opposite side of the floor, a wood-based fire protection coating is provided.

上記構成によれば、第１床版及び第２床版の少なくとも一方の接合面とは反対側の面に防火被覆材を設けることで、積層床版を防火構造とすることができる。また、防火被覆材を木質とすることで、積層床版全体を木質で統一することができる。 According to the above configuration, the laminated floor slab can be made into a fireproof structure by providing the fireproof coating material on the surface opposite to the joint surface of at least one of the first floor slab and the second floor slab. In addition, by using wood as the fire protection covering material, the entire laminated deck can be unified with wood.

本発明によれば、木質の床版を利用して跳ね出し部を形成することができる。 According to the present invention, a protruding portion can be formed by using a wooden floor slab.

実施形態の一例における積層床版を示す平面図である。It is a top view which shows the laminated deck in an example of embodiment. 図１におけるＡ－Ａ線断面図である。FIG. 3 is a sectional view taken along line AA in FIG. 図１におけるＢ－Ｂ線断面図である。It is sectional drawing BB in FIG.

以下、本発明の実施形態の一例における積層床版の跳ね出し構造について、図１～図３を用いて説明する。なお、各図中において、積層床版が架渡される方向を第１方向とし、第１方向に直交する方向を第２方向とする。 Hereinafter, the pop-out structure of the laminated deck in an example of the embodiment of the present invention will be described with reference to FIGS. 1 to 3. In each drawing, the direction in which the laminated deck is laid is the first direction, and the direction orthogonal to the first direction is the second direction.

＜構造＞
図１に示すように、本実施形態の積層床版１０は、他の複数の床版１２とともに建物の床１４を構成しており、床１４は、第２方向へ延びる複数の壁１６及び梁１７、第１方向へ延びる複数の壁柱１８、及び壁柱１８間を第２方向へ延びる間仕切壁２０によって支持されている。 <Structure>
As shown in FIG. 1, the laminated floor slab 10 of the present embodiment constitutes a floor 14 of a building together with a plurality of other floor slabs 12, and the floor 14 includes a plurality of walls 16 and beams extending in a second direction. 17, It is supported by a plurality of wall columns 18 extending in the first direction, and a partition wall 20 extending between the wall columns 18 in the second direction.

また、床１４は、第１方向へ跳ね出す第１跳ね出し部２２と、第１方向に直交する第２方向へ跳ね出す第２跳ね出し部２４とを有しており、第１跳ね出し部２２と第２跳ね出し部２４とが重なる隅部に第１方向及び第２方向の２方向に跳ね出す２方向跳ね出し部２６が形成されている。 Further, the floor 14 has a first pop-out portion 22 that pops out in the first direction and a second pop-out portion 24 that pops out in the second direction orthogonal to the first direction, and has a first pop-out portion. A two-way pop-out portion 26 that pops out in two directions, the first direction and the second direction, is formed at the corner where the 22 and the second pop-out portion 24 overlap.

本実施形態の積層床版１０は、床１４の第２方向における端部、すなわち第２跳ね出し部２４が形成されている部分にそれぞれ配置されている。また、図２及び図３に示すように、積層床版１０は、第１床版２８と、第１床版２８の上部に積層された第２床版３０とを有している。 The laminated floor slab 10 of the present embodiment is arranged at an end portion of the floor 14 in the second direction, that is, a portion where the second protruding portion 24 is formed. Further, as shown in FIGS. 2 and 3, the laminated deck 10 has a first deck 28 and a second deck 30 laminated on the upper part of the first deck 28.

第１床版２８は、例えば複数のラミナ材３２を木質繊維３２Ａの繊維方向が直交するように重ね合わせて接着した木質の直交集成材（ＣＬＴ、Ｃｒｏｓｓ Ｌａｍｉｎａｔｅｄ Ｔｉｍｂｅｒ）で構成されている。 The first floor slab 28 is composed of, for example, a wood cross laminated timber (CLT) in which a plurality of lamina materials 32 are laminated and bonded so that the fiber directions of the wood fibers 32A are orthogonal to each other.

本実施形態では、一例として、第１床版２８（直交集成材）は三層構造とされており、厚み方向における最外層の木質繊維３２Ａの繊維方向が長辺方向（第１方向）に沿っており、中間層の木質繊維３２Ａの繊維方向が短辺方向（第２方向）に沿っている。 In the present embodiment, as an example, the first floor slab 28 (Orthogonal laminated wood) has a three-layer structure, and the fiber direction of the outermost wood fiber 32A in the thickness direction is along the long side direction (first direction). The fiber direction of the wood fiber 32A in the intermediate layer is along the short side direction (second direction).

また、図３に示すように、第１床版２８は第１方向に架設されて両端部が壁１６又は梁１７に支持されており、これにより、第１床版２８は、壁１６又は梁１７への架渡し方向が強軸方向とされ、架渡し方向に直交する方向が弱軸方向とされている。 Further, as shown in FIG. 3, the first deck 28 is erected in the first direction and both ends are supported by the wall 16 or the beam 17, whereby the first deck 28 is the wall 16 or the beam. The direction of the bridge to 17 is the strong axis direction, and the direction orthogonal to the bridge direction is the weak axis direction.

第２床版３０は、例えば単層の無垢材等の構造用木材で構成されており、図２に示すように、先端側（図２における右側）が壁１６に対して第２方向に跳ね出すことで第２跳ね出し部２４を構成している。 The second deck 30 is made of structural wood such as a single layer of solid wood, and as shown in FIG. 2, the tip side (right side in FIG. 2) bounces in the second direction with respect to the wall 16. By putting it out, the second pop-out portion 24 is configured.

一方、第２床版３０の基端側（図２における左側）の下面は、接着剤によって第１床版２８の上面に接着されている。なお、第１床版２８の上面（接合面）と第２床版３０の下面（接合面）とを接合する接合手段としては、接着剤による接着の他、釘、ビス、ピン、又はボルトによる接合等が挙げられる。 On the other hand, the lower surface of the base end side (left side in FIG. 2) of the second floor slab 30 is adhered to the upper surface of the first floor slab 28 by an adhesive. The joining means for joining the upper surface (joining surface) of the first floor slab 28 and the lower surface (joining surface) of the second floor slab 30 is not only bonding with an adhesive but also nails, screws, pins, or bolts. Joining and the like can be mentioned.

また、第１床版２８の先端側（図２における右側）には、第２床版３０の第２跳ね出し部２４の下面に沿って第２方向へ延びる延長床版３６が設けられている。延長床版３６は、第１床版２８と同様に直交集成材で構成されており、第１床版２８と一体形成されている。なお、第１床版２８の先端側に延長床版３６が設けられていなくてもよく、延長床版３６が第１床版２８とは別部材とされていてもよい。 Further, on the tip end side (right side in FIG. 2) of the first floor slab 28, an extended floor slab 36 extending in the second direction along the lower surface of the second protruding portion 24 of the second floor slab 30 is provided. .. The extended floor slab 36 is made of orthogonal laminated lumber like the first floor slab 28, and is integrally formed with the first floor slab 28. The extended floor slab 36 may not be provided on the tip end side of the first floor slab 28, and the extended floor slab 36 may be a separate member from the first floor slab 28.

また、延長床版３６は何ら荷重を負担しておらず、積層床版１０は第２床版３０のみで延長床版３６の荷重、及び積層床版１０の第２方向に生じる応力を負担できるように設計されている。一方、第１床版２８は、積層床版１０の第１方向に生じる応力、及び第２跳ね出し部２４の反力を負担できるように設計されている。 Further, the extended deck 36 does not bear any load, and the laminated deck 10 can bear the load of the extended deck 36 and the stress generated in the second direction of the laminated deck 10 only by the second deck 30. It is designed to be. On the other hand, the first deck 28 is designed so as to be able to bear the stress generated in the first direction of the laminated deck 10 and the reaction force of the second pop-out portion 24.

さらに、第２床版３０の上部には、防火被覆材３８が積層されている。防火被覆材３８は、例えば厚さが４０ｍｍ以上とされた木材であり、第２床版３０の上面全体を被覆している。なお、防火被覆材３８は、第２床版３０の上面ではなく第１床版２８の下面や、第１床版２８と第２床版３０との間に設けられていてもよく、第２床版３０の上面及び第１床版２８の下面にそれぞれ設けられていてもよい。また、耐火規定に従い、防火被覆材３８を設けない構成とすることも可能である。 Further, a fire protection covering material 38 is laminated on the upper part of the second floor slab 30. The fire protection covering material 38 is, for example, wood having a thickness of 40 mm or more, and covers the entire upper surface of the second deck 30. The fireproof covering material 38 may be provided not on the upper surface of the second floor slab 30, but on the lower surface of the first floor slab 28, or between the first floor slab 28 and the second floor slab 30. It may be provided on the upper surface of the deck 30 and the lower surface of the first deck 28, respectively. Further, according to the fire resistance regulation, it is also possible to configure the structure so that the fire protection covering material 38 is not provided.

床１４の積層床版１０以外の床版１２は、図２に示すように、複数のラミナ材４０を重ね合わせて接着した直交集成材で構成されており、積層床版１０と同様に、上面に防火被覆材４２が積層されている。また、隣合う床版１２と積層床版１０とは、互いにスプライン接合されており、必要に応じて図示しない接合金物で緊結されている。 As shown in FIG. 2, the floor slab 12 other than the laminated floor slab 10 of the floor 14 is composed of an orthogonal laminated lumber in which a plurality of lamina materials 40 are laminated and bonded, and like the laminated floor slab 10, the upper surface thereof is formed. The fireproof coating material 42 is laminated on the floor. Further, the adjacent floor slab 12 and the laminated floor slab 10 are spline-bonded to each other, and are bonded to each other by a joining metal fitting (not shown) as needed.

また、床版１２は、ラミナ材４０の厚さが積層床版１０の第１床版２８のラミナ材３２の厚さより厚くなっている。具体的には、床版１２の厚さは積層床版１０の厚さ、すなわち第１床版２８の厚さと第２床版３０の厚さとの和と等しくされており、これにより、積層床版１０の上面と床版１２の上面とが同一面とされている。 Further, in the floor slab 12, the thickness of the laminar material 40 is thicker than the thickness of the laminar material 32 of the first floor slab 28 of the laminated floor slab 10. Specifically, the thickness of the deck 12 is equal to the thickness of the laminated deck 10, that is, the sum of the thickness of the first deck 28 and the thickness of the second deck 30, whereby the laminated floor. The upper surface of the plate 10 and the upper surface of the floor slab 12 are the same surface.

＜作用及び効果＞
本実施形態によれば、積層床版１０の第１床版２８が木質とされているため、木質の第１床版２８を利用して第２跳ね出し部２４を形成することができる。さらに、積層床版１０の第２床版３０も木質とされているため、第２跳ね出し部２４を木質とすることができ、コンクリート造の床版によって建物の床１４を形成する構成と比較して、床１４の意匠性を高めることができるとともに、床１４を軽量化することができる。 <Action and effect>
According to the present embodiment, since the first floor slab 28 of the laminated floor slab 10 is made of wood, the second protruding portion 24 can be formed by using the first floor slab 28 made of wood. Further, since the second floor slab 30 of the laminated floor slab 10 is also made of wood, the second protruding portion 24 can be made of wood, which is compared with the configuration in which the floor 14 of the building is formed by the concrete floor slab. As a result, the design of the floor 14 can be enhanced and the weight of the floor 14 can be reduced.

ここで、本実施形態の積層床版１０は、壁１６又は梁１７への架渡し方向である第１方向、及び跳ね出し方向である第２方向の２方向に応力が生じることによって、２方向応力状態とされている。しかしながら、本実施形態の積層床版１０によれば、第１方向が強軸方向とされた直交集成材によって第１床版２８が構成されており、第２方向に跳ね出す第２床版３０が第１床版２８に積層されて接合されている。 Here, the laminated deck 10 of the present embodiment has two directions due to stress generated in two directions, a first direction which is a bridging direction to the wall 16 or a beam 17 and a second direction which is a pop-out direction. It is in a stressed state. However, according to the laminated deck 10 of the present embodiment, the first deck 28 is composed of the orthogonal laminated material whose first direction is the strong axis direction, and the second deck 30 is ejected in the second direction. Is laminated and joined to the first floor slab 28.

このため、積層床版１０に生じる第１方向の応力を第１床版２８で負担するとともに、第２方向の応力を第２床版３０で負担することができ、コンクリート造の床版より耐力の小さい木質の床版によって第２跳ね出し部２４を形成することが可能となる。 Therefore, the stress in the first direction generated in the laminated deck 10 can be borne by the first deck 28, and the stress in the second direction can be borne by the second deck 30, which is more durable than the concrete deck. It is possible to form the second protruding portion 24 by the small wooden floor slab.

また、本実施形態によれば、積層床版１０の第２床版３０の上面に、防火被覆材３８が設けられているため、積層床版１０を防火構造とすることができる。さらに、防火被覆材３８が木材で構成されているため、積層床版１０全体を木質で統一することができ、意匠性を高めることができる。 Further, according to the present embodiment, since the fire protection covering material 38 is provided on the upper surface of the second floor slab 30 of the laminated floor slab 10, the laminated floor slab 10 can have a fire protection structure. Further, since the fire protection covering material 38 is made of wood, the entire laminated deck 10 can be unified with wood quality, and the design can be enhanced.

＜その他の実施形態＞
以上、本発明について実施形態の一例を説明したが、本発明はかかる実施形態に限定されるものではなく、本発明の範囲内にて他の種々の実施形態が可能である。 <Other embodiments>
Although an example of the embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and various other embodiments are possible within the scope of the present invention.

例えば、上記実施形態では、積層床版１０の第１床版２８が三層構造の直交集成材で構成されていたが、直交集成材は二層構造であってもよく、四層以上の層で構成されていてもよい。また、必要とされる耐力が確保できる場合、第１床版２８は直交集成材ではなく単板の繊維方向を揃えて積層して接着した単板積層材（ＬＶＬ（Ｌａｍｉｎａｔｅｄ Ｖｅｎｅｅｒ Ｌｕｍｂｅｒ））で構成されていてもよく、単層の無垢材で構成されていてもよい。 For example, in the above embodiment, the first deck 28 of the laminated deck 10 is composed of a three-layer structure orthogonal laminated lumber, but the orthogonal laminated lumber may have a two-layer structure and has four or more layers. It may be composed of. Further, when the required yield strength can be secured, the first floor slab 28 is composed of a veneer laminated lumber (LVL (Laminated Veneer Lumber)) which is laminated and bonded by aligning the fiber directions of the veneer instead of the orthogonal laminated lumber. It may be made of a single layer of solid wood.

一方、上記実施形態では、積層床版１０の第２床版３０が単層の無垢材等の構造用木材で構成されていたが、直交集成材で構成されていてもよい。さらに、第２床版３０は鋼板やコンクリートで構成されていてもよく、軽量気泡コンクリート（ＡＬＣ（Ａｕｔｏｃｌａｖｅｄ Ｌｉｇｈｔｗｅｉｇｈｔ ａｅｒａｔｅｄ Ｃｏｎｃｒｅｔｅ））で構成されていてもよい。 On the other hand, in the above embodiment, the second deck 30 of the laminated deck 10 is made of structural wood such as a single layer of solid wood, but it may be made of orthogonal laminated wood. Further, the second floor slab 30 may be made of steel plate or concrete, or may be made of lightweight aerated concrete (ALC (Autoclaved Lightweight aerated Concrete)).

同様に、防火被覆材３８はコンクリートやモルタルで構成されていてもよい。なお、第２床版３０が軽量気泡コンクリート等の防火材料で構成されている場合、第２床版３０が防火被覆材を兼ねることができるため、防火被覆材３８は設けられていなくてもよい。 Similarly, the fire protection covering material 38 may be made of concrete or mortar. When the second floor slab 30 is made of a fireproof material such as lightweight cellular concrete, the second floor slab 30 can also serve as a fireproof coating material, so that the fireproof coating material 38 may not be provided. ..

また、上記実施形態の積層床版１０では、第１床版２８の上部に第２床版３０が積層配置されていたが、第２床版３０の上部に第１床版２８が積層配置されていてもよい。さらに、第１床版２８は壁１６又は梁１７に両端部が支持されていたが、壁柱１８や間仕切壁２０に支持されていてもよい。 Further, in the laminated floor slab 10 of the above embodiment, the second floor slab 30 is laminated and arranged on the upper part of the first floor slab 28, but the first floor slab 28 is laminated and arranged on the upper part of the second floor slab 30. May be. Further, although both ends of the first deck 28 are supported by the wall 16 or the beam 17, they may be supported by the wall pillar 18 or the partition wall 20.

１０ 積層床版
１６ 壁
１７ 梁
２８ 第１床版
３０ 第２床版
３８ 防火被覆材 10 Laminated floor slab 16 Wall 17 Beam 28 1st floor slab 30 2nd floor slab 38 Fire protection coating material

Claims (2)

積層床版の跳ね出し構造であって、
第１方向に架設され、前記第１方向の両端部が柱、梁、又は壁に支持されると共に、前記第１方向が強軸方向とされたＣＬＴからなる第１床版と、
前記第１床版と一体形成され、前記柱、梁、又は壁から前記第１方向と直交する前記第１床版における弱軸方向である第２方向に跳ね出す延長床版と、
前記第１床版、及び前記延長床版に積層されて接合され、前記延長床版と共に前記柱、梁、又は壁から前記第２方向へ跳ね出し、前記第２方向を強軸方向とした単層の無垢材からなる木質の第２床版と、
を有する積層床版の跳ね出し構造。 It is a pop-out structure of a laminated floor slab,
A first deck made of CLT erected in the first direction, both ends of the first direction being supported by columns, beams, or walls, and the first direction being the strong axis direction .
An extended deck that is integrally formed with the first deck and protrudes from the pillar, beam, or wall in the second direction, which is the weak axis direction in the first deck that is orthogonal to the first direction.
It is laminated and joined to the first floor slab and the extension floor slab, and together with the extension floor slab , it is ejected from the pillar, beam, or wall in the second direction , and the second direction is set as the strong axis direction. A second floor of wood made of a single layer of solid wood ,
Laminated floor slab with a pop-out structure. 前記第１床版及び前記第２床版の少なくとも一方の接合面とは反対側の面には、木質の防火被覆材が設けられている、
請求項１に記載の積層床版の跳ね出し構造。 A wood-based fire protection coating material is provided on the surface of the first floor slab and the surface opposite to at least one of the joint surfaces of the second floor slab.
The pop-out structure of the laminated floor slab according to claim 1.
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