JP2024009254A - Steel joint member - Google Patents
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- JP2024009254A JP2024009254A JP2023199724A JP2023199724A JP2024009254A JP 2024009254 A JP2024009254 A JP 2024009254A JP 2023199724 A JP2023199724 A JP 2023199724A JP 2023199724 A JP2023199724 A JP 2023199724A JP 2024009254 A JP2024009254 A JP 2024009254A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 183
- 239000010959 steel Substances 0.000 title claims abstract description 183
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 37
- 238000005304 joining Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 30
- 238000009434 installation Methods 0.000 description 29
- 238000010276 construction Methods 0.000 description 19
- 239000004567 concrete Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011210 fiber-reinforced concrete Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Joining Of Building Structures In Genera (AREA)
Abstract
Description
本発明は、建物の躯体における木製構造と鋼製構造とを接続する接続構造に用いられる鋼製仕口部材に関する。 The present invention relates to a steel joint member used in a connection structure that connects a wooden structure and a steel structure in a building frame.
例えば特許文献１のように、建物の躯体を構成する柱部分を木製構造とする場合、躯体のエネルギー吸収性能を確保するために、梁部分を鉄骨などの鋼製構造とする工法が知られている。例えば特許文献１には、柱部分を構成する木製構造と梁部分を構成する鋼製構造とが鋼板を用いたＲＣ製の仕口部材で接続されている。 For example, as in Patent Document 1, when the pillars that make up the frame of a building are made of wood, there is a known construction method in which the beams are made of steel, such as a steel frame, in order to ensure the energy absorption performance of the frame. There is. For example, in Patent Document 1, a wooden structure forming a column portion and a steel structure forming a beam portion are connected by an RC joint member using a steel plate.
しかしながら、特許文献１においては、木製構造と鋼製構造とを強固に接続することが可能であるものの、柱部分と梁部分とが交差する仕口部分の重量が大きくなる。 However, in Patent Document 1, although it is possible to firmly connect the wooden structure and the steel structure, the weight of the joint portion where the column portion and the beam portion intersect becomes large.
上記課題を解決する鋼製仕口部材は、木製構造と、フランジを有する鋼製構造と、前記木製構造と前記鋼製構造とを接続する接続構造と、を有する合成構造にあって、前記接続構造に用いられる。前記接続構造は、前記木製構造の応力を伝達する耐火性能を備えた耐火応力伝達部材と、一端が前記鋼製仕口部材に固定され、他端が前記木製構造に接合され、前記耐火応力伝達部材を貫通する接合部材と、をさらに備える。前記鋼製仕口部材は、上下方向に延びる鋼製本体部と、前記上下方向における前記鋼製本体部の端部に設けられて前記フランジ及び前記鋼製本体部に接合された鋼製面板材とを有する鋼製仕口部材と、を有し、前記耐火応力伝達部材を介して前記木製構造と前記鋼製構造とを接続するとともに前記接合部材の一端が前記鋼製面板材に固定されたものである。 A steel joint member that solves the above problems has a composite structure that includes a wooden structure, a steel structure having a flange, and a connection structure that connects the wooden structure and the steel structure. Used in structures. The connecting structure includes a fire-resistant stress transmitting member having fire-resistant performance for transmitting the stress of the wooden structure, one end of which is fixed to the steel joint member, the other end of which is joined to the wooden structure, and the fire-resistant stress transmitting member that transmits the stress of the wooden structure. It further includes a joining member that penetrates the member. The steel joint member includes a steel main body extending in the vertical direction, and a steel face plate material provided at an end of the steel main body in the vertical direction and joined to the flange and the steel main body. and a steel joint member having a steel joint member, which connects the wooden structure and the steel structure via the fire-resistant stress transmission member, and one end of the joint member is fixed to the steel face plate material. It is something.
本発明によれば、仕口部分の重量を小さくすることができる。 According to the present invention, the weight of the joint portion can be reduced.
図１～図６を参照して鋼製仕口部材の一実施形態について説明する。
図１に示すように、合成構造１０は、木製構造１１、鋼製構造１２、および、木製構造１１と鋼製構造１２とを接続する接続構造１３を有している。これら木製構造１１、鋼製構造１２、および、接続構造１３は、建物の躯体を構成する。
An embodiment of a steel joint member will be described with reference to FIGS. 1 to 6.
As shown in FIG. 1, the composite structure 10 includes a wooden structure 11, a steel structure 12, and a connecting structure 13 that connects the wooden structure 11 and the steel structure 12. These wooden structure 11, steel structure 12, and connection structure 13 constitute the frame of the building.
木製構造１１は、上下方向に延びる木製柱である。木製構造１１は、例えば矩形状の断面形状を有する。木製構造１１は、その外側面が石膏ボードなどの耐火層によって被覆されていてもよい。また、この耐火層の外側面が木製の仕上げ層などによって被覆されていてもよい。 The wooden structure 11 is a wooden column extending in the vertical direction. The wooden structure 11 has, for example, a rectangular cross-sectional shape. The wooden structure 11 may be covered on its outer surface with a fireproof layer such as plasterboard. Further, the outer surface of this fireproof layer may be covered with a wooden finishing layer or the like.
木製構造１１は、端面１５に開口する複数の接続孔１６を有する。各接続孔１６は、木製構造１１の延在方向に沿って所定の深さだけ延びている。各接続孔１６は、後述する接合部材２７，２８が所定の隙間を空けた状態で挿入可能な大きさに形成されている。接続孔１６の開口は、端面１５における中心部を取り囲むように配列されている。なお、図１において、下側に示されている２つの木製構造１１と上側に示されている２つの木製構造１１とは、別の階の木製構造１１である。 The wooden structure 11 has a plurality of connection holes 16 opening in the end face 15. Each connection hole 16 extends along the extending direction of the wooden structure 11 to a predetermined depth. Each connection hole 16 is formed in a size that allows connection members 27 and 28, which will be described later, to be inserted with a predetermined gap therebetween. The openings of the connection holes 16 are arranged so as to surround the center of the end surface 15. In addition, in FIG. 1, the two wooden structures 11 shown on the lower side and the two wooden structures 11 shown on the upper side are wooden structures 11 on different floors.
鋼製構造１２は、隣り合う２つの木製構造１１に架設される大梁（梁材）である。鋼製構造１２は、例えば、ウェブと一対のフランジとを有するＨ型鋼である。鋼製構造１２は、第１鋼製構造１７と第２鋼製構造１８とを有する。第１鋼製構造１７は、図１の下側に示される２つの木製構造１１が並ぶ第１水平方向において隣り合う２つの木製構造１１に架設される。第２鋼製構造１８は、第１水平方向に直交する第２水平方向に架設される。第２鋼製構造１８は、第２鋼製構造本体１９と本体連結部２０とで構成されている。第２鋼製構造本体１９と本体連結部２０は、これらを突き合わせた状態で溶接や剛接合、ピン接合などの接合法により連結される。 The steel structure 12 is a girder (beam material) constructed between two adjacent wooden structures 11. The steel structure 12 is, for example, an H-shaped steel having a web and a pair of flanges. The steel structure 12 has a first steel structure 17 and a second steel structure 18. The first steel structure 17 is constructed between two adjacent wooden structures 11 in the first horizontal direction in which the two wooden structures 11 shown on the lower side of FIG. 1 are lined up. The second steel structure 18 is constructed in a second horizontal direction orthogonal to the first horizontal direction. The second steel structure 18 includes a second steel structure main body 19 and a main body connecting portion 20. The second steel structural body 19 and the main body connecting portion 20 are connected by a joining method such as welding, rigid joining, or pin joining in a state where they are butted against each other.
接続構造１３は、耐火応力伝達部材２５、鋼製仕口部材２６、下側接合部材２７、および、上側接合部材２８を有する。
耐火応力伝達部材２５は、直方体形状を有するセメント組成物であって、例えば製造工場などで製造されたのちに施工現場へと搬入されるプレキャスト材である。耐火応力伝達部材２５は、建物の躯体における柱部分を構成する。耐火応力伝達部材２５は、木製構造１１に対する位置合わせにより、その外側面が木製構造１１の外側面と面一となることが望ましい。セメント組成物の一例は、コンクリートである。セメント組成物の他例は、スリムクリート（登録商標）等、繊維を混合したセメント系材料（繊維補強コンクリート材料）である。
The connection structure 13 includes a fire-resistant stress transmission member 25, a steel joint member 26, a lower joint member 27, and an upper joint member 28.
The fire-resistant stress transmission member 25 is a cement composition having a rectangular parallelepiped shape, and is a precast material that is manufactured at a manufacturing factory and then transported to a construction site. The fire-resistant stress transmitting member 25 constitutes a column portion of the building frame. It is desirable that the outer surface of the fire-resistant stress transmitting member 25 is flush with the outer surface of the wooden structure 11 by alignment with the wooden structure 11 . An example of a cement composition is concrete. Another example of a cement composition is a cementitious material mixed with fibers (fiber-reinforced concrete material), such as Slimcrete (registered trademark).
耐火応力伝達部材２５は、下面と上面とに開口して直線状に延びる複数の貫通孔３０を有する。各貫通孔３０は、その内周面との間に所定の隙間を空けた状態で接合部材２７，２８が挿入可能な大きさに形成されている。また、下面および上面における貫通孔３０の開口は、木製構造１１の端面における接続孔１６の開口と同じ配列で形成されている。すなわち、接続孔１６と貫通孔３０は、木製構造１１と耐火応力伝達部材２５との位置を合わせることにより、接合部材２７，２８が挿通可能に構成されている。なお、耐火応力伝達部材２５は、木製構造１１を被覆する耐火層やこの耐火層を被覆する仕上げ層などによって外側面が被覆されてもよい。 The fireproof stress transmission member 25 has a plurality of through holes 30 that are open in the lower surface and the upper surface and extend linearly. Each through hole 30 is formed in a size that allows the joining members 27 and 28 to be inserted therein with a predetermined gap left between the through hole 30 and the inner peripheral surface thereof. Further, the openings of the through holes 30 on the lower surface and the upper surface are formed in the same arrangement as the openings of the connecting holes 16 on the end surface of the wooden structure 11. That is, the connection hole 16 and the through hole 30 are configured such that the joining members 27 and 28 can be inserted therethrough by aligning the wooden structure 11 and the fireproof stress transmission member 25. Note that the outer surface of the fire-resistant stress transmission member 25 may be covered with a fire-resistant layer that covers the wooden structure 11 or a finishing layer that covers this fire-resistant layer.
耐火応力伝達部材２５は、鋼材よりも熱容量が大きく、鋼材よりも高い耐火性能を有するため、火災時などに鋼製仕口部材２６から木製構造１１への熱の移動を抑えることができる。これにより、鋼製仕口部材２６からの熱伝達に起因した木製構造１１の燃焼を抑えることができる。また、耐火応力伝達部材２５は、木製構造１１よりも機械的な強度が大きいため、木製構造１１に作用した荷重を効率よく鋼製仕口部材２６に伝達することができる。 Since the fire-resistant stress transmission member 25 has a larger heat capacity than steel and has higher fire resistance than steel, it can suppress the transfer of heat from the steel joint member 26 to the wooden structure 11 in the event of a fire or the like. Thereby, combustion of the wooden structure 11 due to heat transfer from the steel joint member 26 can be suppressed. Moreover, since the fire-resistant stress transmission member 25 has greater mechanical strength than the wooden structure 11, the load acting on the wooden structure 11 can be efficiently transmitted to the steel joint member 26.
鋼製仕口部材２６は、各種の鋼材が溶接などの接合法によって連結された鉄骨造である。鋼製仕口部材２６は、本体部３１、下面部３２、および、上面部３３を有する。
本体部３１は、ウェブとフランジとを有する。ウェブは、十字形状の断面形状を有して上下方向に延びている。フランジは、板状の形状を有して上下方向に延びている。フランジは、上面視において各ウェブの先端に連結されている。フランジには、鋼製構造１２のウェブが接合される。ウェブの上端およびフランジの上端は、同一面内に位置している。ウェブの下端およびフランジの下端は、同一面内に位置している。
The steel joint member 26 is a steel structure in which various steel materials are connected by a joining method such as welding. The steel joint member 26 has a main body portion 31, a lower surface portion 32, and an upper surface portion 33.
The main body portion 31 has a web and a flange. The web has a cross-shaped cross section and extends in the vertical direction. The flange has a plate-like shape and extends in the vertical direction. The flange is connected to the tip of each web in a top view. A web of steel structure 12 is joined to the flange. The upper ends of the webs and the upper ends of the flanges are located in the same plane. The lower end of the web and the lower end of the flange lie in the same plane.
下面部３２は、本体部３１の下端に連結された矩形状の板材である。本体部３１は、ウェブの交差部分が下面部３２の重心部分に、また、上面視におけるウェブの各先端部が下面部３２の各辺の中点部分に向かって延びるように連結される。下面部３２には、鋼製構造１２における下側のフランジが接合される。 The lower surface portion 32 is a rectangular plate connected to the lower end of the main body portion 31 . The main body portion 31 is connected such that the intersecting portions of the webs extend to the center of gravity of the lower surface portion 32, and each tip of the web in a top view extends toward the midpoint of each side of the lower surface portion 32. A lower flange of the steel structure 12 is joined to the lower surface portion 32 .
上面部３３は、本体部３１の上端に連結された矩形状の板材である。本体部３１は、ウェブの交差部分が上面部３３の重心部分に、また、上面視におけるウェブの各先端部が上面部３３の各辺の中点部分に向かって延びるように連結される。上面部３３には、鋼製構造１２における上側のフランジが接合される。 The upper surface portion 33 is a rectangular plate connected to the upper end of the main body portion 31 . The main body portion 31 is connected such that the intersecting portions of the webs extend to the center of gravity of the upper surface portion 33, and each tip of the web in a top view extends toward the midpoint of each side of the upper surface portion 33. The upper flange of the steel structure 12 is joined to the upper surface portion 33 .
下側接合部材２７は、その一端が下面部３２に固定されている。下側接合部材２７は、下面部３２から下方に向かって延びている。下側接合部材２７は、耐火応力伝達部材２５を貫通可能な長さを有している。下側接合部材２７は、下面部３２の中心部を取り囲むように配列されている。 The lower joining member 27 has one end fixed to the lower surface portion 32. The lower joining member 27 extends downward from the lower surface portion 32. The lower joining member 27 has a length that allows it to penetrate the fire-resistant stress transmitting member 25. The lower joining members 27 are arranged so as to surround the center of the lower surface portion 32.
上側接合部材２８は、その一端が上面部３３に固定されている。上側接合部材２８は、上面部３３から上方に向かって延びている。上側接合部材２８は、上面部３３の中心部を取り囲むように配列されている。上側接合部材２８は、鋼製仕口部材２６の上側に配設される耐火応力伝達部材２５を貫通可能な長さを有している。この耐火応力伝達部材２５には、鋼製構造１２の上方に設けられる上方材、例えば木製の床や屋根などが接続される。 The upper joint member 28 has one end fixed to the upper surface portion 33. The upper joint member 28 extends upward from the upper surface portion 33. The upper joining members 28 are arranged so as to surround the center of the upper surface portion 33. The upper joint member 28 has a length that allows it to penetrate the fireproof stress transmission member 25 disposed above the steel joint member 26. An upper member provided above the steel structure 12, such as a wooden floor or roof, is connected to this fire-resistant stress transmitting member 25.
下側接合部材２７および上側接合部材２８は、接続孔１６と貫通孔３０との位置合わせが完了した状態において、これら接続孔１６と貫通孔３０とに挿入可能となっている。
図２～図５を参照して、上述した合成構造１０の施工方法について説明する。ここでは、所定の階において木製構造１１と鋼製構造１２とを接続構造１３を介して連結し、その所定の階の上階に木製構造１１を設置するまで工程について説明する。
The lower joining member 27 and the upper joining member 28 can be inserted into the connecting hole 16 and the through hole 30 in a state where the alignment between the connecting hole 16 and the through hole 30 is completed.
A method of constructing the above-described composite structure 10 will be described with reference to FIGS. 2 to 5. Here, the steps from connecting the wooden structure 11 and the steel structure 12 at a predetermined floor via the connecting structure 13 to installing the wooden structure 11 above the predetermined floor will be described.
図２に示すように、合成構造の施工方法は、木製構造設置ステップ（Ｓ１０１）、耐火応力伝達部材設置ステップ（Ｓ１０２）、鋼製仕口部材設置ステップ（Ｓ１０３）、上方材設置ステップ（Ｓ１０５）、上階木製構造設置ステップ（Ｓ１０６）を有する。また、鋼製仕口部材設置ステップ（Ｓ１０３）は、鋼製構造接続ステップ（Ｓ１０４）を有する。 As shown in FIG. 2, the construction method for the composite structure includes a wooden structure installation step (S101), a fire-resistant stress transmission member installation step (S102), a steel joint member installation step (S103), and an upper member installation step (S105). , comprising an upper floor wooden structure installation step (S106). Further, the steel joint member installation step (S103) includes a steel structure connection step (S104).
木製構造設置ステップ（Ｓ１０１）では、所定の階において、複数の木製構造１１を各々の設置位置に設置する。
図３に示すように、耐火応力伝達部材設置ステップ（Ｓ１０２）では、設置された木製構造１１の端面１５に対して、耐火応力伝達部材２５を設置する。具体的には、木製構造１１と耐火応力伝達部材２５との位置合わせを行ったのち、木製構造１１の端面１５に対して耐火応力伝達部材２５を載置する。これにより、木製構造１１の接続孔１６と耐火応力伝達部材２５の貫通孔３０とが互いに連通した状態となる。
In the wooden structure installation step (S101), a plurality of wooden structures 11 are installed at respective installation positions on a predetermined floor.
As shown in FIG. 3, in the refractory stress transmitting member installation step (S102), the refractory stress transmitting member 25 is installed on the end surface 15 of the installed wooden structure 11. Specifically, after the wooden structure 11 and the refractory stress transmitting member 25 are aligned, the refractory stress transmitting member 25 is placed on the end surface 15 of the wooden structure 11 . As a result, the connection hole 16 of the wooden structure 11 and the through hole 30 of the fire-resistant stress transmission member 25 are brought into communication with each other.
鋼製仕口部材設置ステップ（Ｓ１０３）では、鋼製仕口部材２６が各位置に設置される。鋼製仕口部材設置ステップ（Ｓ１０３）の鋼製構造接続ステップ（Ｓ１０４）は、鋼製仕口部材２６に対して第１鋼製構造１７が接続される工程である。 In the steel joint member installation step (S103), steel joint members 26 are installed at each position. The steel structure connecting step (S104) of the steel joint member installation step (S103) is a step in which the first steel structure 17 is connected to the steel joint member 26.
第１鋼製構造１７は、例えば工場や施工現場など、鋼製構造１２の設置場所と異なる場所において鋼製仕口部材２６に予め接続されてもよい。第１鋼製構造１７と鋼製仕口部材２６は、ウェブ同士およびフランジ同士が連結される。また、この工程では、鋼製仕口部材２６に対して第２鋼製構造１８の本体連結部２０も連結される。鋼製仕口部材２６に対して第１鋼製構造１７および本体連結部２０が連結されたユニットを架設ユニット４０という。 The first steel structure 17 may be connected in advance to the steel joint member 26 at a location different from the installation location of the steel structure 12, such as a factory or a construction site. The first steel structure 17 and the steel joint member 26 are connected at their webs and flanges. Further, in this step, the main body connecting portion 20 of the second steel structure 18 is also connected to the steel joint member 26. A unit in which the first steel structure 17 and the main body connecting portion 20 are connected to the steel joint member 26 is referred to as an erection unit 40.
図４（ａ）に示すように、鋼製仕口部材設置ステップ（Ｓ１０３）では、クレーンなどを用いて架設ユニット４０を木製構造１１の上方に配置する。次に、耐火応力伝達部材２５と鋼製仕口部材２６との位置合わせを行ったのち、鋼製構造１２と鋼製仕口部材２６とを下方へ移動させる。 As shown in FIG. 4A, in the steel joint member installation step (S103), the construction unit 40 is placed above the wooden structure 11 using a crane or the like. Next, after the refractory stress transmission member 25 and the steel joint member 26 are aligned, the steel structure 12 and the steel joint member 26 are moved downward.
これにより、図４（ｂ）に示すように、耐火応力伝達部材２５の貫通孔３０および木製構造１１の接続孔１６に下側接合部材２７が挿入される。そして、これら木製構造１１、耐火応力伝達部材２５、および、下側接合部材２７がＧＩＲ（Ｇｌｕｅｄ ｉｎ Ｒｏｄ）接合等により接合される。 Thereby, the lower joining member 27 is inserted into the through hole 30 of the fireproof stress transmission member 25 and the connection hole 16 of the wooden structure 11, as shown in FIG. 4(b). The wooden structure 11, the refractory stress transmitting member 25, and the lower joining member 27 are joined together by GIR (Glued in Rod) joining or the like.
鋼製仕口部材設置ステップ（Ｓ１０３）では、架設ユニット４０の配設が各位置において行われる。そして、鋼製仕口部材設置ステップのあとには、図４（ｂ）の紙面奥側において、本体連結部２０に対して第２鋼製構造本体１９が接合される第２鋼製構造接合ステップが実行される。また、第２鋼製構造１８に対して後述する小梁４７（梁材）が接続される小梁接続ステップが実行される。 In the steel joint member installation step (S103), the construction units 40 are installed at each position. After the steel joint member installation step, there is a second steel structure joining step in which the second steel structure main body 19 is joined to the main body connecting portion 20 on the back side of the page in FIG. 4(b). is executed. Further, a beam connecting step is performed in which a beam 47 (beam material), which will be described later, is connected to the second steel structure 18.
図５（ａ）に示すように、上方材設置ステップ（Ｓ１０５）では、鋼製構造１２の上方に位置する上方材を設置する。本実施形態では、まず、鋼製仕口部材２６の上側に位置する耐火応力伝達部材２５が設置される。鋼製仕口部材２６に対する耐火応力伝達部材２５の位置合わせを行ったのち、上側接合部材２８が貫通孔３０を通じて耐火応力伝達部材２５を貫通するように、鋼製仕口部材２６に対して耐火応力伝達部材２５が載置される。そして、この耐火応力伝達部材２５に上方材が接続されることにより、鋼製構造１２の上方に上方材が設けられる。 As shown in FIG. 5(a), in the upper member installation step (S105), an upper member located above the steel structure 12 is installed. In this embodiment, first, the fireproof stress transmission member 25 located above the steel joint member 26 is installed. After positioning the refractory stress transmitting member 25 with respect to the steel joint member 26 , the fireproof stress transmitting member 25 is positioned with respect to the steel joint member 26 such that the upper joint member 28 penetrates the refractory stress transmitting member 25 through the through hole 30 . A stress transmitting member 25 is placed. By connecting the upper member to this fireproof stress transmitting member 25, the upper member is provided above the steel structure 12.
図５（ｂ）に示すように、上階木製構造設置ステップ（Ｓ１０６）では、上記所定の階の上階における木製構造１１が設置される。具体的には、鋼製仕口部材２６の上側接合部材２８と木製構造１１との位置合わせを行ったのち、当該木製構造１１の接続孔１６に上側接合部材２８を挿入する。そして、鋼製仕口部材２６、耐火応力伝達部材２５、および、木製構造１１がＧＩＲ接合等により接合される。以後、耐火応力伝達部材設置ステップ（Ｓ１０２）から上階木製構造設置ステップ（Ｓ１０６）までの各ステップが適宜繰り返されることにより、建物の躯体が構築される。 As shown in FIG. 5(b), in the upper floor wooden structure installation step (S106), the wooden structure 11 on the upper floor of the predetermined floor is installed. Specifically, after the upper joint member 28 of the steel joint member 26 and the wooden structure 11 are aligned, the upper joint member 28 is inserted into the connection hole 16 of the wooden structure 11. Then, the steel joint member 26, the fire-resistant stress transmission member 25, and the wooden structure 11 are joined by GIR joining or the like. Thereafter, the building frame is constructed by appropriately repeating each step from the fire-resistant stress transmission member installation step (S102) to the upper floor wooden structure installation step (S106).
図６を参照して、合成構造１０が適用された建物の躯体の一例について説明する。
図６に示すように、躯体４５は、複数階を有する。この躯体４５において、上方材は、各階に設置される床スラブ４８である。この床スラブ４８は、現場打設コンクリート材である。床スラブ４８において、木製構造１１と鋼製仕口部材２６の上面部３３との間の部分は耐火応力伝達部材として機能する。また、上方材である床スラブ４８の上に上階の木製構造１１が設置される。
An example of a building frame to which the composite structure 10 is applied will be described with reference to FIG. 6.
As shown in FIG. 6, the frame 45 has multiple floors. In this frame 45, the upper members are floor slabs 48 installed on each floor. This floor slab 48 is a cast-in-place concrete material. In the floor slab 48, the portion between the wooden structure 11 and the upper surface portion 33 of the steel joint member 26 functions as a fire-resistant stress transmitting member. Moreover, the wooden structure 11 of the upper floor is installed on the floor slab 48 which is the upper material.
躯体４５は、図６における各階の左右方向において、隣り合う２つの木製構造１１が鋼製仕口部材２６を介して鋼製構造１２（第１鋼製構造１７あるいは第２鋼製構造１８、図６では第１鋼製構造１７）で連結される部分と連結されない部分とを交互に有する。躯体４５の梁部分のうち、鋼製構造１２の部分を大梁部分という。 In the left and right direction of each floor in FIG. 6, the first steel structure 17) has alternately connected portions and unconnected portions. Among the beam portions of the frame 45, the portion of the steel structure 12 is referred to as a girder portion.
また、躯体４５は、鋼製構造１２で連結されない部分においては、図６における左右方向で隣り合う２つの第２鋼製構造１８が機械的な強度が弱い小梁４７で接続される。小梁４７は、図６に二点鎖線で示しており、例えばＨ形鋼などの鋼材によって形成される。躯体４５の梁部分のうち、小梁４７で連結されている部分を小梁部分という。 Further, in the parts of the frame 45 that are not connected by the steel structure 12, two second steel structures 18 that are adjacent in the left-right direction in FIG. 6 are connected by a small beam 47 having low mechanical strength. The small beam 47 is shown by a two-dot chain line in FIG. 6, and is formed of a steel material such as an H-beam, for example. Among the beam portions of the frame 45, the portions connected by the small beams 47 are referred to as small beam portions.
躯体４５においては、大梁部分に対する直上階または直下階には、小梁部分が配設されている。また、小梁部分に対する直上階または直下階には、大梁部分が配設されている。こうした構造の躯体４５においては、仕口部分の上下の柱部分における降伏曲げモーメントの和が梁部分における降伏曲げモーメントよりも大きくなる。 In the frame 45, a small beam portion is provided on the floor directly above or directly below the large beam portion. Furthermore, a girder portion is provided on the floor directly above or directly below the small beam portion. In the frame 45 having such a structure, the sum of the yield bending moments in the column parts above and below the joint part is larger than the yield bending moment in the beam parts.
本実施形態の効果について説明する。
（１）接続構造１３においては、耐火応力伝達部材２５と鋼製仕口部材２６とが各別の部材として構成されている。また、鋼製仕口部材２６が鉄骨造である。これにより、木製構造１１についての耐火性能と応力伝達性能とを確保しながら、柱部分と梁部分とが交差する仕口部分の軽量化を図ることができる。
The effects of this embodiment will be explained.
(1) In the connection structure 13, the fireproof stress transmission member 25 and the steel joint member 26 are constructed as separate members. Moreover, the steel joint member 26 is of steel frame construction. Thereby, it is possible to reduce the weight of the joint portion where the column portion and the beam portion intersect, while ensuring the fire resistance performance and stress transmission performance of the wooden structure 11.
（２）鋼板を用いたＲＣ製の仕口部材は、鋼板部分の製造場所とコンクリートの打設場所が異なることが一般的である。このため、鋼板部分の製造場所、コンクリートの打設場所、施工現場の順に部材を搬送する必要がある。 (2) For RC joint members using steel plates, the steel plate portion is generally manufactured at a different location from the concrete placement location. Therefore, it is necessary to transport the parts in this order: the steel plate manufacturing site, the concrete pouring site, and the construction site.
上述した合成構造１０においては、耐火応力伝達部材２５と鋼製仕口部材２６とが各別の部材である。このため、耐火応力伝達部材２５および鋼製仕口部材２６を、各々の製造場所から施工現場へと直接搬入することができる。これにより、合成構造１０における運搬コストを低減することができる。 In the above-described composite structure 10, the fire-resistant stress transmitting member 25 and the steel joint member 26 are separate members. Therefore, the refractory stress transmitting member 25 and the steel joint member 26 can be directly transported from their respective manufacturing locations to the construction site. Thereby, the transportation cost of the composite structure 10 can be reduced.
（３）また、ＲＣ製の仕口部材は、仕口部材と木製構造とを接合する接合筋をコンクリート部分で支持している。このため、コンクリート部分の強度を確保するために、接合筋の間隔をある程度確保しなければならない。 (3) Furthermore, in the RC joint member, the joint reinforcement that joins the joint member and the wooden structure is supported by the concrete part. Therefore, in order to ensure the strength of the concrete part, it is necessary to ensure a certain distance between the joint reinforcements.
これに対して、上述した合成構造１０においては、接合筋である接合部材２７，２８が溶接などの接合法によって鋼製仕口部材２６に固定される。このため、ＲＣ製の仕口部材よりも接合筋の間隔を小さくすることができる。つまり、合成構造１０においては、仕口部材と木製構造とを接合する接合筋の配置についての自由度が向上する。その結果、より多くの接合筋を配設することが可能となるから、木製構造１１と鋼製仕口部材２６とをより強固に接合することができる。 On the other hand, in the above-described composite structure 10, the joining members 27 and 28, which are joining reinforcements, are fixed to the steel joint member 26 by a joining method such as welding. Therefore, the spacing between the joining bars can be made smaller than in the case of a joint member made of RC. That is, in the composite structure 10, the degree of freedom in arranging the joining bars that join the joint member and the wooden structure is improved. As a result, it becomes possible to arrange more joining bars, so that the wooden structure 11 and the steel joint member 26 can be joined more firmly.
（４）図１～図５に示す合成構造１０においては、鋼製仕口部材２６の上方に位置する耐火応力伝達部材２５に上方材が接続されるため、鋼製仕口部材２６から床スラブへの熱伝達が抑えられる。これにより、床スラブの材質に関する自由度が向上するため、例えば木製の床スラブを採用することができる。 (4) In the composite structure 10 shown in FIGS. 1 to 5, the upper member is connected to the fire-resistant stress transmitting member 25 located above the steel joint member 26, so the steel joint member 26 is connected to the floor slab. Heat transfer to is suppressed. This increases the degree of freedom regarding the material of the floor slab, so that, for example, a wooden floor slab can be used.
（５）図６に示す躯体４５においては、鋼製仕口部材２６の上側に位置する耐火応力伝達部材として、現場打設コンクリート材である床スラブ４８の一部が機能する。これにより、当該耐火応力伝達部材と床スラブとの接続ステップが不要となることから、工期の短縮を図ることができる。 (5) In the frame 45 shown in FIG. 6, a part of the floor slab 48, which is a concrete material cast on site, functions as a fire-resistant stress transmitting member located above the steel joint member 26. This eliminates the need for the step of connecting the refractory stress transmitting member and the floor slab, so that the construction period can be shortened.
（６）躯体４５においては、仕口部分の上下の柱部分における降伏曲げモーメントの和が梁部分における降伏曲げモーメントよりも大きくなることから、躯体４５に大きな荷重が作用したときには、木製構造１１よりも先に鋼製構造１２を降伏させることができる。 (6) In the frame 45, since the sum of the yield bending moments in the upper and lower column parts of the joint section is larger than the yield bending moment in the beam part, when a large load is applied to the frame 45, the wooden structure 11 The steel structure 12 can also be yielded first.
（７）第２鋼製構造１８は、第２鋼製構造本体１９と、鋼製仕口部材２６に予め連結された本体連結部２０とで構成されている。これにより、鋼製仕口部材２６の本体部３１のフランジに対する第２鋼製構造１８の連結を容易に行うことができる。 (7) The second steel structure 18 is composed of a second steel structure main body 19 and a main body connecting portion 20 connected to the steel joint member 26 in advance. Thereby, the second steel structure 18 can be easily connected to the flange of the main body portion 31 of the steel joint member 26.
本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
・合成構造１０においては、小梁４７が存在しなくてもよい。こうした構成であっても上記（６）に記載した効果に準ずる効果を得ることができる。
This embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- In the composite structure 10, the small beam 47 may not exist. Even with such a configuration, an effect similar to the effect described in (6) above can be obtained.
・合成構造１０は、互いに隣り合う２つの木製構造１１の全てが第１鋼製構造１７あるいは第２鋼製構造１８によって接続されていてもよい。こうした構成においても、第１鋼製構造１７および第２鋼製構造１８の機械的な強度を小さくすることにより、上記（６）に記載した効果に準ずる効果を得ることができる。 - In the composite structure 10, all two mutually adjacent wooden structures 11 may be connected by the first steel structure 17 or the second steel structure 18. Even in such a configuration, by reducing the mechanical strength of the first steel structure 17 and the second steel structure 18, an effect similar to the effect described in (6) above can be obtained.
・鋼製構造接続ステップにおいては、第１鋼製構造１７および第２鋼製構造１８の全てが施工現場において鋼製仕口部材２６に対して連結されてもよい。
・鋼製仕口部材２６の本体部３１は、下面部３２と上面部３３とを連結し、かつ、鋼製構造１２が接合可能であればよい。このため、本体部３１は、例えば、矩形枠状の断面形状を有して上下方向に延びる部材であってもよい。
- In the steel structure connection step, all of the first steel structure 17 and the second steel structure 18 may be connected to the steel joint member 26 at the construction site.
- The main body portion 31 of the steel joint member 26 only needs to connect the lower surface portion 32 and the upper surface portion 33 and allow the steel structure 12 to be joined. For this reason, the main body portion 31 may be, for example, a member having a rectangular frame-like cross-sectional shape and extending in the vertical direction.
・耐火応力伝達部材２５は、木製構造１１に一体化された状態で施工現場に搬入されてもよい。この場合、木製構造１１と耐火応力伝達部材２５は、接続孔１６と貫通孔３０との位置を合わせた状態で接着等により一体化される。 - The fireproof stress transmission member 25 may be carried to the construction site in a state integrated with the wooden structure 11. In this case, the wooden structure 11 and the refractory stress transmitting member 25 are integrated by adhesive or the like with the connection hole 16 and the through hole 30 aligned.
・接合部材２７，２８は、一端が鋼製仕口部材２６に固定され、他端が木製構造１１に接合される構成であればよい。このため、接合部材２７，２８は、鋼製仕口部材２６に固定された状態で施工現場に搬入される構成に限らず、例えば、木製構造１１に接合された状態で施工現場に搬入されてもよい。この場合、下側接合部材２７は、鋼製仕口部材２６に対して鋼製仕口部材設置ステップにて固定され、上側接合部材２８は、鋼製仕口部材２６に対して上階木製構造設置工程にて固定される。 - The joining members 27 and 28 may have a configuration in which one end is fixed to the steel joint member 26 and the other end is joined to the wooden structure 11. For this reason, the joining members 27 and 28 are not limited to the configuration in which they are transported to the construction site while being fixed to the steel joint member 26; Good too. In this case, the lower joint member 27 is fixed to the steel joint member 26 in the steel joint member installation step, and the upper joint member 28 is fixed to the steel joint member 26 in the wooden structure on the upper floor. It is fixed during the installation process.
（付記）
木製構造と、鋼製構造と、前記木製構造と前記鋼製構造とを接続する接続構造と、を有する合成構造であって、前記接続構造は、前記木製構造の応力を伝達する耐火性能を備えた耐火応力伝達部材と、前記耐火応力伝達部材を介して前記木製構造と前記鋼製構造とを接続する鉄骨造の鋼製仕口部材と、一端が前記鋼製仕口部材に固定され、他端が前記木製構造に接合され、前記耐火応力伝達部材を貫通する接合部材と、を備える。
(Additional note)
A composite structure having a wooden structure, a steel structure, and a connecting structure connecting the wooden structure and the steel structure, the connecting structure having fire resistance to transfer stress of the wooden structure. a fire-resistant stress transmitting member; a steel joint member of a steel frame construction that connects the wooden structure and the steel structure via the fire-resistant stress transmitting member; one end is fixed to the steel joint member; the other end is fixed to the steel joint member; a joining member having an end joined to the wooden structure and passing through the refractory stress transfer member.
上記合成構造において、前記鋼製構造は、梁材であり、前記耐火応力伝達部材は、プレキャスト材であり、前記プレキャスト材に接続され、前記梁材の上方に設けられる上方材を有する。 In the above composite structure, the steel structure is a beam material, the fire-resistant stress transmission member is a precast material, and has an upper member connected to the precast material and provided above the beam material.
上記合成構造において、前記鋼製構造は、梁材であり、前記耐火応力伝達部材は、現場打設コンクリート材であり、前記梁材の上方に前記現場打設コンクリート材と一体に設けられる上方材を有する。 In the above composite structure, the steel structure is a beam material, the fire-resistant stress transmission member is a cast-in-place concrete material, and an upper member is provided above the beam material integrally with the cast-in-place concrete material. has.
上記合成構造において、前記鋼製構造として複数階の梁材を有し、所定の階の梁が大梁であり、前記所定の階の直上階又は直下階の梁材は、存在しない又は小梁である。
木製構造と、鋼製構造と、前記木製構造と前記鋼製構造とを接続する接続構造と、を有する合成構造を施工する施工方法であって、所定の階に前記木製構造を設置する木製構造設置ステップと、前記木製構造に耐火応力伝達部材を設置する耐火応力伝達部材設置ステップと、前記木製構造と前記耐火応力伝達部材とに接続される鉄骨造の鋼製仕口部材を設置する鋼製仕口部材設置ステップと、を有する。
In the above composite structure, the steel structure has beams on multiple floors, the beams on a predetermined floor are large beams, and the beams on the floor directly above or below the predetermined floor do not exist or are small beams. be.
A construction method for constructing a composite structure having a wooden structure, a steel structure, and a connection structure connecting the wooden structure and the steel structure, the wooden structure comprising installing the wooden structure on a predetermined floor. an installation step of installing a fire-resistant stress transmitting member on the wooden structure; and installing a steel joint member of a steel frame structure connected to the wooden structure and the fire-resistant stress transmitting member. and a step of installing a joint member.
上記施工方法において、前記鋼製仕口部材設置ステップは、前記木製構造と前記耐火応力伝達部材とに前記鋼製仕口部材が接続される前に、当該鋼製仕口部材に前記鋼製構造を接続する鋼製構造接続ステップを有する。 In the construction method, the steel joint member installation step includes installing the steel joint member on the steel joint member before the steel joint member is connected to the wooden structure and the fire-resistant stress transmitting member. It has a steel structure connecting step to connect.
上記施工方法において、前記鋼製構造は、梁材であり、前記鋼製仕口部材設置ステップの後に、前記梁材の上方に設けられる上方材を設置する上方材設置ステップを有する。
上記施工方法において、前記上方材の上に前記所定の階の上階の木製構造を設置する上階木製構造設置ステップを有する。
In the above construction method, the steel structure is a beam material, and after the steel joint member installation step, there is an upper member installation step of installing an upper member provided above the beam material.
The above construction method includes an upper floor wooden structure installation step of installing an upper floor wooden structure of the predetermined floor on the upper material.
１０…合成構造、１１…木製構造、１２…鋼製構造、１３…接続構造、１５…端面、１６…接続孔、１７…第１鋼製構造、１８…第２鋼製構造、１９…第２鋼製構造本体、２０…本体連結部、２５…耐火応力伝達部材、２６…鋼製仕口部材、２７…下側接合部材、２８…上側接合部材、３０…貫通孔、３１…本体部、３２…下面部、３３…上面部、４０…架設ユニット、４５…躯体、４７…小梁、４８…床スラブ。 10...Synthetic structure, 11...Wooden structure, 12...Steel structure, 13...Connection structure, 15...End face, 16...Connection hole, 17...First steel structure, 18...Second steel structure, 19...Second Steel structure main body, 20... Main body connection part, 25... Fire resistant stress transmission member, 26... Steel joint member, 27... Lower side joining member, 28... Upper joining member, 30... Through hole, 31... Main body part, 32 ...lower surface part, 33...upper surface part, 40...construction unit, 45...framework, 47...small beam, 48...floor slab.
Claims (5)
前記接続構造は、
一端が前記鋼製仕口部材に固定され、他端が前記木製構造に接合される接合部材と、をさらに備え、
前記鋼製仕口部材は、
上下方向に延びる鋼製本体部と、
前記上下方向における前記鋼製本体部の端部に設けられて前記フランジ及び前記鋼製本体部に接合された鋼製面板材とを有する鋼製仕口部材と、を有し、
前記木製構造と前記鋼製構造とを接続するとともに前記接合部材の一端が前記鋼製面板材に固定されたものである
鋼製仕口部材。 A composite structure having a wooden structure, a steel structure having a flange, and a connection structure connecting the wooden structure and the steel structure, the steel joint member being used in the connection structure. ,
The connection structure is
further comprising a joining member having one end fixed to the steel joint member and the other end joined to the wooden structure,
The steel joint member is
A steel main body extending vertically,
a steel joint member provided at an end of the steel main body in the vertical direction and having a steel face plate material joined to the flange and the steel main body,
A steel joint member which connects the wooden structure and the steel structure and has one end of the joining member fixed to the steel face plate material.
請求項１に記載の鋼製仕口部材。 The connection structure includes a fire-resistant stress transmission member having a through hole through which the joining member passes, is disposed between the wooden structure and the steel face plate material, and has fire-resistant performance to transmit stress of the wooden structure. The steel joint member according to claim 1, further comprising:
前記接合部材は、前記フランジよりも外側に位置する部分に固定されているものを含んでいる
請求項１または２に記載の鋼製仕口部材。 The steel face plate material has a portion located outside the flange in the width direction of the flange,
The steel joint member according to claim 1 or 2, wherein the joint member includes a member fixed to a portion located outside the flange.
十字形状の断面形状を有して前記上下方向に延びるウェブと、
上面視における前記ウェブの各先端に接合され、前記上下方向に延びるフランジと、に
請求項１または２に記載の鋼製仕口部材。 The steel main body is
a web having a cross-shaped cross-sectional shape and extending in the vertical direction;
The steel joint member according to claim 1 or 2, further comprising: a flange joined to each tip of the web in a top view and extending in the vertical direction.
枠状の断面形状を有して前記上下方向に延びる鋼材により構成されている
請求項１または２に記載の鋼製仕口部材。 The steel main body is
The steel joint member according to claim 1 or 2, comprising a steel material having a frame-like cross-sectional shape and extending in the vertical direction.
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