JP2009249900A - Precast concrete beam member, and laminated beam - Google Patents

Precast concrete beam member, and laminated beam Download PDF

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JP2009249900A
JP2009249900A JP2008098676A JP2008098676A JP2009249900A JP 2009249900 A JP2009249900 A JP 2009249900A JP 2008098676 A JP2008098676 A JP 2008098676A JP 2008098676 A JP2008098676 A JP 2008098676A JP 2009249900 A JP2009249900 A JP 2009249900A
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precast concrete
plate
beam member
pca
laminated
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Kenichi Miyazaki
賢一 宮崎
Yasusuke Suzuki
庸介 鈴木
Shinya Igarashi
信哉 五十嵐
Hideo Oka
日出夫 岡
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Takenaka Komuten Co Ltd
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Takenaka Komuten Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a PCa beam member eliminating a need for concrete placing at a construction site, and to provide a laminated beam. <P>SOLUTION: The PCa beam member 10 is arranged with the width direction of the board placed vertically, formed to be a flat plate having a thickness T, formed to have a stepped part 11 with a reduced thickness at the end, and provided with a steel plate 44 on the stepped part 11. A plurality of joint plates 18 extend outward from a joint of a column 16 in the direction of the PCa beam member 10 and parallel to the PCa beam member 10. The steel plate 44 of the PCa beam member 10 and the joint plates 18 are overlapped each other. Joint holes 22 formed at the joint plates 18 and through-holes 14 of the steel plate 44 are aligned, respectively, and bolts 20 are inserted. The steel plates 44 of a plurality of the PCa beam members 10 are joined to the joint plates 18 in sequence in the same manner. After all of the steel plates 44 of the PCa beam members 10 to be joined are overlapped, the bolts 20 are fixed with nuts 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、プレキャストコンクリート製梁部材及び積層梁に関する。   The present invention relates to a precast concrete beam member and a laminated beam.

プレキャストコンクリート（以下ＰＣａと記す。）製の部材を使用すれば、現場での配筋やコンクリート打設といった工事を伴わないため、工期の短縮が図りやすく、安定して品質の良いコンクリート建物が建てられる。   By using precast concrete (hereinafter referred to as “PCa”) members, construction work such as on-site reinforcement and concrete placement is not required, so it is easy to shorten the construction period, and a stable and high-quality concrete building is built. It is done.

しかし、梁などをＰＣａで製造すると、必然的に部材が大きくて重いものとなっていた。
この結果、従来工法で施工される鉄筋コンクリート建物に比べて、ＰＣａ製の部材で施工される建物の工事では、大きな揚重機械を設置しなければならず、また、寸法の大きな部材を取り回すための広いスペース、ストックヤードが必要となるなど、施工の面から適用が限られていた。 However, when beams or the like are manufactured with PCa, the members are inevitably large and heavy.
As a result, compared to reinforced concrete buildings constructed by conventional methods, the construction of buildings constructed with PCa components requires the installation of a large lifting machine and the handling of large-sized components. The application was limited in terms of construction, such as requiring a large space and a stock yard.

このような状況の下、ＰＣａ製の部材の欠点を補い、ＰＣａ製の部材の特徴を生かす技術が求められている。   Under such circumstances, there is a need for a technique that compensates for the shortcomings of PCa members and takes advantage of the characteristics of PCa members.

例えば、梁への適用に関しては、大きくて重い部材である梁を平板状に細分化したＰＣａ版を作り、複数のＰＣａ版を板厚方向に積層して積層梁とする技術が提案されている（特許文献１）。   For example, with regard to application to a beam, a technique has been proposed in which a PCa plate is obtained by subdividing a large and heavy beam into a flat plate shape, and a plurality of PCa plates are laminated in the plate thickness direction to form a laminated beam. (Patent Document 1).

特許文献１によれば、図１３（Ａ）に示すように上部主筋１、下部主筋２、繋ぎ筋３が埋設されたＰＣａ版６を、板厚方向に複数枚積層して積層梁Ａとしている。   According to Patent Document 1, as shown in FIG. 13A, a plurality of PCa plates 6 in which the upper main bar 1, the lower main bar 2, and the connecting bar 3 are embedded are stacked in the plate thickness direction to form a laminated beam A. .

そして積層梁Ａと柱（基礎Ｂ）との接合は、図１３（Ｂ）に示すように、ＰＣａ版６の端面から延出させた上部主筋１の端部、及び下部主筋２の端部をそれぞれ基礎Ｂに挿し込み、基礎Ｂにコンクリートを打設するコンクリート接合としている。   And as shown in FIG. 13 (B), the laminated beam A and the column (foundation B) are joined at the end of the upper main bar 1 and the end of the lower main bar 2 extended from the end surface of the PCa plate 6. Each of them is inserted into the foundation B, and concrete bonding is performed by placing concrete on the foundation B.

しかし、特許文献１の構成では、梁をＰＣａ版６とすることで梁の搬送時の軽量化は図れているものの、柱梁の仕口部における現場でのコンクリート打設作業が必要であり、ＰＣａ製の部材の特徴が十分に生かされているとはいえない。
特開平２−７０８５０号公報 However, in the configuration of Patent Document 1, although the weight of the beam is reduced by using the PCa plate 6 as the beam, concrete work on site at the joint of the column beam is necessary. It cannot be said that the characteristic of the member made from PCa is fully utilized.
Japanese Patent Laid-Open No. 2-70850

本発明は、上記事実に鑑み、柱梁の仕口部における現場でのコンクリート打設作業を不要とするプレキャストコンクリート製梁部材、及び積層梁を提供することを目的とする。   In view of the above-described facts, an object of the present invention is to provide a precast concrete beam member and a laminated beam that do not require an on-site concrete placing operation at a joint portion of a column beam.

請求項1に記載の発明は、プレキャストコンクリート製梁部材において、板状のプレキャストコンクリート製部材の端部に形成され、板幅方向を上下にして柱の仕口部から張り出す接合プレートが重ね合わせられる接合面と、前記接合面に形成され前記接合プレートの接合孔とボルト接合される貫通孔と、を有することを特徴としている。   The invention according to claim 1 is a precast concrete beam member in which a joining plate formed at an end portion of a plate-like precast concrete member and projecting from a column joint portion with a plate width direction up and down is overlapped. And a through hole that is formed on the joint surface and that is joined to the joint plate and a bolt.

請求項1に記載の発明によれば、プレキャストコンクリート製梁部材の端部の接合面と柱の仕口部から張り出す接合プレートが重ね合わせられる。また、接合面には、貫通孔が形成されており、接合プレートの接合孔とボルト接合される。   According to the first aspect of the present invention, the joining surface of the end portion of the precast concrete beam member and the joining plate protruding from the joint portion of the column are overlapped. Further, a through hole is formed in the joint surface and is bolted to the joint hole of the joint plate.

このように、容易に柱の仕口部にプレキャストコンクリート製梁部材を接合できる。また、接合面に接合プレートを重ね合わせることで、接合プレートの納まりがよくなる。   In this way, the precast concrete beam member can be easily joined to the joint portion of the column. In addition, the joining plate can be stored better by superimposing the joining plate on the joining surface.

請求項２の発明は、請求項１に記載のプレキャストコンクリート製梁部材において、前記接合面には、補剛用の鋼板が取付けられていることを特徴としている。   According to a second aspect of the present invention, in the precast concrete beam member according to the first aspect, a steel plate for stiffening is attached to the joint surface.

請求項２に記載の発明によれば、接合面が補剛用の鋼板で補剛され、接合プレートと鋼板が重ね合わせられる。これにより、プレキャストコンクリート製梁部材の接合強度を高くできる。   According to the second aspect of the invention, the joining surface is stiffened by the stiffening steel plate, and the joining plate and the steel plate are overlapped. Thereby, the joint strength of the precast concrete beam member can be increased.

請求項３の発明は、請求項１又は２に記載のプレキャストコンクリート製梁部材において、前記接合面は、前記端部を一段下げて形成され、段差の高さは、前記接合プレートの厚さより小さく、又は前記接合プレートと前記鋼板を重ね合わせた厚さより小さいことを特徴としている。   The invention according to claim 3 is the precast concrete beam member according to claim 1 or 2, wherein the joining surface is formed by lowering the end portion one step, and the height of the step is smaller than the thickness of the joining plate. Alternatively, the thickness is smaller than the thickness obtained by superimposing the joining plate and the steel plate.

請求項３に記載の発明によれば、プレキャストコンクリート製梁部材を複数枚積層して柱の仕口部に接合するとき、隣接するプレキャストコンクリート製梁部材に干渉されることなく、接合面又は鋼板と接合プレートを、厚さ方向に隙間なく重ね合わすことができる。   According to the third aspect of the present invention, when a plurality of precast concrete beam members are stacked and joined to the joint portion of the column, the joining surface or the steel plate is not interfered with by the adjacent precast concrete beam members. And the joining plate can be stacked with no gap in the thickness direction.

請求項４の発明は、請求項１〜３のいずれか１項に記載のプレキャストコンクリート製梁部材において、前記プレキャストコンクリート製梁部材の配筋は、上部主筋と、下部主筋と、前記上部主筋及び前記下部主筋を繋ぎトラスを構成するトラス鉄筋と、を有することを特徴としている。   The invention of claim 4 is the precast concrete beam member according to any one of claims 1 to 3, wherein the reinforcement of the precast concrete beam member includes an upper main bar, a lower main bar, the upper main bar, A truss rebar that connects the lower main bars and constitutes a truss.

請求項４に記載の発明によれば、上部主筋、下部主筋、及びトラス鉄筋でトラスが構成されている。このようにトラス鉄筋を用いることで、せん断補強筋が不要となり、製造工程上の手間を削減できる。   According to invention of Claim 4, a truss is comprised by the upper main bar, the lower main bar, and the truss reinforcement. Thus, by using a truss reinforcement, a shear reinforcement becomes unnecessary and the effort on a manufacturing process can be reduced.

請求項５に記載の発明に係る積層梁は、請求項１〜４のいずれか１項に記載のプレキャストコンクリート製梁部材を、板幅方向を上下にして複数枚積層して拘束したことを特徴としている。
請求項５に記載の発明によれば、積層梁が、プレキャストコンクリート製梁部材の板幅方向を上下にして複数枚積層して構成されている。
重い梁を分割することで個々のプレキャストコンクリート製梁部材の軽量化が図れ、搬送や施工が容易となる。また、プレキャストコンクリート製梁部材を積層して拘束することで、所要の梁の設計強度を得ることができる。 The laminated beam according to the invention described in claim 5 is characterized in that the precast concrete beam member according to any one of claims 1 to 4 is constrained by laminating a plurality of sheets with the plate width direction up and down. It is said.
According to the fifth aspect of the present invention, the laminated beams are formed by laminating a plurality of precast concrete beam members with the plate width direction being up and down.
By dividing heavy beams, the weight of each precast concrete beam member can be reduced, and transportation and construction are facilitated. Moreover, the required design strength of a beam can be obtained by laminating and restraining precast concrete beam members.

請求項６に記載の発明は、請求項５に記載の積層梁において、前記積層梁を構成する外側のプレキャストコンクリート製梁部材には、小梁を支持する小梁受部が外方へ向けて突設されていることを特徴としている。   According to a sixth aspect of the present invention, in the laminated beam according to the fifth aspect, the outer precast concrete beam member constituting the laminated beam has a small beam receiving portion for supporting the small beam facing outward. It is characterized by protruding.

請求項６に記載の発明によれば、積層梁を構成する外側のプレキャストコンクリート製梁部材の側面には、小梁を支持する小梁受部が突設されている。これにより、小梁受部で小梁を支持し、小梁と積層梁の上面を同一平面とできる。   According to the sixth aspect of the present invention, the small beam receiving portion for supporting the small beam is projected from the side surface of the outer precast concrete beam member constituting the laminated beam. Thereby, the small beam can be supported by the small beam receiving portion, and the upper surface of the small beam and the laminated beam can be made the same plane.

請求項７の発明は、請求項７に記載の積層梁において、前記積層梁を構成する外側の前記プレキャストコンクリート製梁部材の成を中央部の成より低くして、前記外側のプレキャストコンクリート製梁部材でスラブを支持することを特徴としている。   A seventh aspect of the present invention is the laminated beam according to the seventh aspect, wherein the outer precast concrete beam member constituting the laminated beam is made lower than the middle portion, and the outer precast concrete beam is formed. It is characterized by supporting the slab with a member.

請求項７に記載の発明によれば、積層梁の外側のプレキャストコンクリート製梁部材の成を中央部の成より低くしている。この外側の成を低くしたプレキャストコンクリート製梁部材で、積層梁と積層梁の間に架け渡されるスラブを支持できる。   According to the seventh aspect of the present invention, the formation of the precast concrete beam member outside the laminated beam is made lower than that of the central portion. With this precast concrete beam member having a low outside formation, a slab spanned between laminated beams can be supported.

本発明は、上記構成としたので、柱梁の仕口部でのコンクリート打設作業が不要となる。   Since this invention was set as the said structure, the concrete placement work in the joint part of a column beam becomes unnecessary.

（第１の実施の形態）
図１に示すように、第１の実施の形態に係るプレキャストコンクリート（以下ＰＣａと記す。）製梁部材１０は、板幅方向を上下にして設けられ、端部が柱の仕口部に接合される。 (First embodiment)
As shown in FIG. 1, a precast concrete (hereinafter abbreviated as PCa) beam member 10 according to the first embodiment is provided with the plate width direction up and down, and the end portion is joined to a column joint. Is done.

ＰＣａ製梁部材１０は、厚さＴで平板状に形成され、端部を一段下げて板厚ｔ２の薄板とすることで、段差部１１が形成されている。   The PCa beam member 10 is formed in a flat plate shape with a thickness T, and the step portion 11 is formed by lowering the end portion one step to form a thin plate with a plate thickness t2.

段差部１１の接合面１２には、板厚ｔ１の鋼板４４が接合されている。
そして、ＰＣａ製梁部材１０の板厚ｔ２と鋼板４４の板厚ｔ１を合計した厚さは、ＰＣａ製梁部材１０の他の部分の厚さＴよりｄ１だけ薄い寸法とされて、高さｄ１の段差が形成される。 A steel plate 44 having a thickness t1 is joined to the joining surface 12 of the step portion 11.
The total thickness of the plate thickness t2 of the PCa beam member 10 and the plate thickness t1 of the steel plate 44 is a dimension that is thinner by d1 than the thickness T of the other part of the PCa beam member 10, and the height d1. Are formed.

この段差の高さｄ１は、後述する接合プレート１８の板厚Ｓより小さい寸法とされている。また、段差部１１の接合面１２及び鋼板４４には、接合プレート１８の接合孔２２へ挿入されたボルト２０が挿入される貫通孔１４が形成されている。   The height d1 of the step is smaller than the plate thickness S of the joining plate 18 described later. Further, the through hole 14 into which the bolt 20 inserted into the joint hole 22 of the joint plate 18 is inserted is formed in the joint surface 12 of the step portion 11 and the steel plate 44.

図２に示すように、ＰＣａ製梁部材１０は、板幅方向を上下にしたとき、上側に上部主筋２６が、下側に下部主筋２８が部材長に渡り配筋され、両端部は鋼板４４に接合されている。更に、トラス鉄筋３０が上部主筋２６と下部主筋２８を繋ぎ、上部主筋２６、下部主筋２８、及びトラス鉄筋３０でトラスが構成されている。   As shown in FIG. 2, when the beam member 10 made of PCa is moved up and down in the plate width direction, the upper main reinforcement 26 is arranged on the upper side, the lower main reinforcement 28 is arranged on the lower side over the member length, and both ends are steel plates 44. It is joined to. Further, the truss rebar 30 connects the upper main bar 26 and the lower main bar 28, and the upper main bar 26, the lower main bar 28, and the truss bar 30 constitute a truss.

また、ＰＣａ製梁部材１０の上部主筋２６、下部主筋２８、及びトラス鉄筋３０のいずれもが配筋されていない部分には、設備配管用のスリーブ孔３４や、後述するように、複数のＰＣａ製梁部材１０を中締めする、中締め用のボルト孔３２が設けられている。   Further, in the portion where none of the upper main bar 26, the lower main bar 28 and the truss reinforcing bar 30 of the beam member 10 made of PCa are arranged, a sleeve hole 34 for equipment piping or a plurality of PCa as will be described later. An intermediate fastening bolt hole 32 for fastening the beam-making member 10 is provided.

次に、ＰＣａ製梁部材１０と柱１６の仕口部の接合構造について説明する。
図３に示すように、柱１６の仕口部から、接合プレート１８がＰＣａ製梁部材１０に向かって、平行に複数枚張り出している。 Next, the joint structure of the joint portion of the PCa beam member 10 and the column 16 will be described.
As shown in FIG. 3, a plurality of joining plates 18 project in parallel from the joint portion of the column 16 toward the PCa beam member 10.

図４に示すように、接合プレート１８は、厚さＳの鋼板で形成され、柱１６の仕口部から張り出す平板状の張り出し部１８Ａには、接合孔２２が形成されている。
接合プレート１８の基端はダイアフラム２４の側面に接合され、柱１６の中へ埋設される。張り出し部１８Ａと平板部１８Ｂとの境には、Ｕ字状若しくはＶ字状の湾曲部３６が設けられている。 As shown in FIG. 4, the joining plate 18 is formed of a steel plate having a thickness S, and a joining hole 22 is formed in a flat plate-like projecting portion 18 </ b> A projecting from the joint portion of the column 16.
The proximal end of the joining plate 18 is joined to the side surface of the diaphragm 24 and embedded in the column 16. A U-shaped or V-shaped curved portion 36 is provided at the boundary between the projecting portion 18A and the flat plate portion 18B.

図５に示すように、ダイアフラム２４は、鋼板で形成された箱体で、上面と下面には円形の貫通孔３８が形成されている。この貫通孔３８を通りダイアフラム２４の内部にコンクリートが充填され、柱１６と一体化される。   As shown in FIG. 5, the diaphragm 24 is a box formed of a steel plate, and circular through holes 38 are formed on the upper surface and the lower surface. The diaphragm 24 is filled with concrete through the through hole 38 and integrated with the column 16.

また、ダイアフラム２４は柱１６の仕口部に配置され、柱１６の主筋４０が平板部１８Ｂの間を通っている。なお、ダイアフラム２４が配置された部分には、帯筋４２が設けられていない。
このように、接合プレート１８を接合したダイアフラム２４を、柱１６に埋設して一体化することで、接合プレート１８と柱１６の接合強度が確保できる。 Moreover, the diaphragm 24 is arrange | positioned at the joint part of the pillar 16, and the main reinforcement 40 of the pillar 16 passes between the flat plate parts 18B. In addition, the band 42 is not provided in the part in which the diaphragm 24 is disposed.
As described above, the diaphragm 24 joined with the joining plate 18 is embedded in the column 16 and integrated, whereby the joining strength between the joining plate 18 and the column 16 can be secured.

次に、ＰＣａ製梁部材１０の取付け手順を説明する。
図３に示すように、ＰＣａ製梁部材１０の鋼板４４を１番手前（ボルト２０の挿入側）の接合プレート１８の裏面に重ね合わせ、接合プレート１８に設けられた接合孔２２と鋼板４４の貫通孔１４を一致させ、ボルト２０を挿入する。 Next, a procedure for attaching the PCa beam member 10 will be described.
As shown in FIG. 3, the steel plate 44 of the beam member 10 made of PCa is superposed on the back surface of the joining plate 18 in the first position (the insertion side of the bolt 20), and the joining hole 22 provided in the joining plate 18 and the steel plate 44 are arranged. The through holes 14 are aligned and the bolts 20 are inserted.

次に、複数のＰＣａ製梁部材１０の鋼板４４を、順次、同じ手順で、接合プレート１８に重ね合わせ、全てのＰＣａ製梁部材１０の鋼板４４を、接合プレート１８に重ね合わせた後、ボルト２０をナット２１で固定し積層梁５４とする。   Next, the steel plates 44 of the plurality of PCa beam members 10 are sequentially superposed on the joining plate 18 in the same procedure, and all the steel plates 44 of the PCa beam members 10 are superposed on the joining plate 18, and then bolts 20 is fixed with a nut 21 to form a laminated beam 54.

この接合作業において、図６に示すように、接合プレート１８には湾曲部３６があるので、接合プレート１８の動きの自由度が増し、接合プレート１８と鋼板４４との密着性を高めることができる。   In this joining operation, as shown in FIG. 6, since the joining plate 18 has the curved portion 36, the degree of freedom of movement of the joining plate 18 is increased, and the adhesion between the joining plate 18 and the steel plate 44 can be enhanced. .

また、接合プレート１８の板厚Ｓは、段差ｄ１より厚いので、隣接するＰＣａ製梁部材１０に干渉されることなく、接合プレート１８を、鋼板４４に重ね合わせ、締め付けることができる。   Further, since the plate thickness S of the bonding plate 18 is thicker than the step d1, the bonding plate 18 can be overlapped with the steel plate 44 and tightened without being interfered by the adjacent PCa beam member 10.

次に、積層梁５４の端部と、柱１６の仕口部との間の隙間を充填材５８で間詰する。これにより、柱梁の仕口部を保護すると共に、仕口部の見栄えがよくなる。   Next, the gap between the end portion of the laminated beam 54 and the joint portion of the column 16 is filled with the filler 58. Thereby, while protecting the joint part of a column beam, the appearance of a joint part becomes good.

次に、図７（Ａ）（Ｂ）に示すように、中締め用に設けられたボルト孔３２を利用して、ボルト５６とナット５７で、複数枚のＰＣａ製梁部材１０で構成された積層梁５４を中締めする。   Next, as shown in FIGS. 7A and 7B, a plurality of PCa beam members 10 are formed by bolts 56 and nuts 57 using bolt holes 32 provided for intermediate fastening. The laminated beam 54 is tightened.

なお、図７において、ＰＣａ製梁部材１０とＰＣａ製梁部材１０の間には、接合プレート１８の板厚Ｓと段差ｄ１の板厚差による隙間（Ｓ−ｄ１）が空いているので、スペーサ５５を挿入して締結する。
以上により、現場でコンクリート打設作業を行うことなく、柱１６の仕口部へＰＣａ製梁部材１０を接合することができる。 In FIG. 7, there is a gap (S−d1) between the PCa beam member 10 and the PCa beam member 10 due to the difference between the plate thickness S of the joining plate 18 and the step d1. 55 is inserted and fastened.
As described above, the PCa beam member 10 can be joined to the joint portion of the column 16 without performing concrete placing work on site.

また、ＰＣａ製梁部材１０は、トラス鉄筋３０を採用し、板状に形成されている。
これにより、従来、主筋と帯筋で奥行きのあるカゴ状に組み立てる必要があった配筋作業が容易となる。更に、従来、作業性の悪さと品質の低下が指摘されていた、カゴ状の鉄筋の隙間からコンクリートを充填する作業がなくなり、コンクリート充填作業が改善され、品質が向上する。
また、コンクリートが固化するまでの時間が短縮され、生産の効率化が図れ、工期の短縮につなげられる。
これらにより、ＰＣａ製梁部材１０の製造が容易となると共に、品質が向上する。 Moreover, the beam member 10 made of PCa employs a truss rebar 30 and is formed in a plate shape.
This facilitates the bar arrangement work that has conventionally been required to be assembled into a deep basket shape with the main bars and straps. Furthermore, the work of filling concrete through the gaps between the cage-shaped reinforcing bars, which has been pointed out to have poor workability and low quality, is improved, and the concrete filling work is improved and the quality is improved.
In addition, the time until the concrete solidifies can be shortened, the production efficiency can be improved, and the construction period can be shortened.
These facilitate the manufacture of the PCa beam member 10 and improve the quality.

また、ＰＣａ製梁部材１０は軽量化されているため、柱の仕口部への接合作業が容易となる。さらに、段差ｄ１を設けることで、ＰＣａ製梁部材１０と接合プレート１８の重ね合わせ部の納まりがよくなる。   Moreover, since the beam member 10 made of PCa is reduced in weight, the joining operation | work to the joint part of a pillar becomes easy. Furthermore, by providing the step d1, the overlap of the overlapping portion between the PCa beam member 10 and the joining plate 18 is improved.

以上説明した、ＰＣａ製梁部材１０は、段差部１１に補剛用の鋼板４４を取付けた構成である。しかし、この構成にとらわれることはなく、図８に示すように、段差部１１に補剛用の鋼板を取付けないＰＣａ製梁部材１７でもよい。   The PCa beam member 10 described above has a configuration in which a stiffening steel plate 44 is attached to the step portion 11. However, this configuration is not restrictive, and a PCa beam member 17 in which a stiffening steel plate is not attached to the step portion 11 may be used as shown in FIG.

また、図９（Ａ）に示すように、段差ｄ１の生じない厚肉鋼板４６を段差部１１に接合したＰＣａ製梁部材１３でもよい。
また、図９（Ｂ）に示すように、段差ｄ１がなく、かつ、鋼板４４を取付けないＰＣａ製梁部材４８でもよい。 Further, as shown in FIG. 9A, a PCa beam member 13 in which a thick steel plate 46 without a step d1 is joined to the step portion 11 may be used.
Further, as shown in FIG. 9B, a PCa beam member 48 without the step d1 and without the steel plate 44 attached thereto may be used.

なお、本実施例では、積層梁５４は、ＰＣａ製梁部材１０を６枚積層した例で説明したが、６枚に限定されることはなく、建物に応じて任意に枚数は選択できる。このとき、積層梁５４は、すべてを同じ構成のＰＣａ製梁部材１０で構成する必要はなく、例えば、図７（Ｃ）に示すように、６枚のＰＣａ製梁部材１０のうち、外側の１枚のみを段差部１１を設けないＰＣａ製梁部材４８とし、段差部１１が外から見えないように積層梁５３を構成することもできる。   In the present embodiment, the laminated beam 54 is described as an example in which six PCa beam members 10 are laminated. However, the number of laminated beams 54 is not limited to six and can be arbitrarily selected according to the building. At this time, it is not necessary for the laminated beams 54 to be composed entirely of the PCa beam members 10 having the same configuration. For example, as shown in FIG. It is also possible to configure the laminated beam 53 so that the stepped portion 11 cannot be seen from the outside by using only one sheet as the PCa beam member 48 not provided with the stepped portion 11.

以上説明したように、大きくて重い梁を板状のＰＣａ製梁部材１０に分割することで、搬送時の軽量化が図れる。また、ＰＣａ製梁部材１０の配筋に重なりがなくなり、製作性が向上し、工場生産が容易となる。
このとき、スターラップとしてトラス鉄筋３０を用いた構成とすることで、せん断補強筋が不要となり製作の簡便化が図れる。 As described above, by dividing the large and heavy beam into the plate-like PCa beam member 10, it is possible to reduce the weight during conveyance. Further, the reinforcement of the PCa beam member 10 is not overlapped, so that the manufacturability is improved and the factory production is facilitated.
At this time, by using the truss reinforcing bar 30 as the stirrup, the shear reinforcing bar is unnecessary, and the manufacturing can be simplified.

さらに、ＰＣａ製梁部材１０の厚さＴが同一で、成と部材長を変えたＰＣａ製梁部材１０を製作することで、積層梁５４のモジュール化が容易となり、多様な建物に対応できる。また、ＰＣａ製梁部材１０を必要とされる枚数だけ積層して積層梁５４とすることで、梁の強度を容易に調節できる。   Furthermore, by making the PCa beam member 10 having the same thickness T of the PCa beam member 10 and having different member lengths, the laminated beam 54 can be easily modularized and can be used for various buildings. Further, by laminating the required number of PCa beam members 10 to form the laminated beam 54, the strength of the beam can be easily adjusted.

（第２の実施の形態）
第２の実施の形態に係る積層梁６０は、差し筋６２を下方へ突出したＰＣａ製梁部材６４を備えた構成である。 (Second Embodiment)
The laminated beam 60 according to the second embodiment is configured to include a PCa beam member 64 in which a reinforcing bar 62 protrudes downward.

図１０に示すように、積層梁６０は、第１の実施の形態に係る積層梁５４の、中央部の２枚のＰＣａ製梁部材１０を、ＰＣａ製梁部材６４に置換した構成である。
ＰＣａ製梁部材６４は、下方の壁６６へ挿入される挿し筋６２を有している。挿し筋６２は、ＰＣａ製梁部材６４の下部から下方へ向けて突出されている。 As shown in FIG. 10, the laminated beam 60 has a configuration in which the two PCa beam members 10 at the center of the laminated beam 54 according to the first embodiment are replaced with PCa beam members 64.
The PCa beam member 64 has an insertion bar 62 inserted into the lower wall 66. The insertion bar 62 protrudes downward from the lower part of the beam member 64 made of PCa.

挿し筋６２は、上部を下部主筋２８若しくは上部主筋２６に溶接接合され、壁６６の内部に至る長さとされている。   The insertion bar 62 is welded at the upper part to the lower main bar 28 or the upper main bar 26 and has a length reaching the inside of the wall 66.

これにより、積層梁６０の下方に壁６６を建てるとき、挿し筋６２と壁鉄筋を結合して壁６６の内部に埋め込み、壁６６と積層梁６０を一体化できる。   Accordingly, when the wall 66 is built below the laminated beam 60, the insertion bar 62 and the wall reinforcing bar are combined and embedded in the wall 66, and the wall 66 and the laminated beam 60 can be integrated.

（第３の実施の形態）
第３の実施の形態に係る積層梁７０は、第１の実施の形態に係る積層梁５４の６つのＰＣａ製梁部材１０のうち、外側の１つを小梁受け梁部材７２としている。 (Third embodiment)
In the laminated beam 70 according to the third embodiment, the outer one of the six PCa beam members 10 of the laminated beam 54 according to the first embodiment is a small beam receiving beam member 72.

図１１に示すように、小梁受け梁部材７２は、片方の側面に小梁６８を支持する小梁受部７４が外方へ向けて突設され、小梁受部７４には、小梁受部７４を補強する配筋７６が設けられている。   As shown in FIG. 11, the small beam receiving beam member 72 has a small beam receiving portion 74 that supports the small beam 68 projecting outward on one side surface. A reinforcing bar 76 for reinforcing the receiving portion 74 is provided.

小梁受け梁部材７２は、積層梁７０において、小梁６８が架けられる外側に配置され、積層梁７０が柱１６の仕口部に接合されたとき、小梁受部７４で小梁６８を支持する。
これにより、積層梁７０で容易に小梁６８の支持ができる。また、小梁６８の上面と積層梁７０の上面を同一平面にできる。 The small beam receiving beam member 72 is disposed outside the laminated beam 70 where the small beam 68 is bridged. When the laminated beam 70 is joined to the joint portion of the column 16, the small beam receiving portion 74 causes the small beam 68 to be connected to the small beam 68. To support.
Thereby, the small beam 68 can be easily supported by the laminated beam 70. In addition, the upper surface of the small beam 68 and the upper surface of the laminated beam 70 can be coplanar.

（第４の実施の形態）
第４の実施の形態に係る積層梁８０は、５つのＰＣａ製梁部材５２のうちの両端の２つの成を低くして、スラブ８４の基板８６を受けるスラブ受け構造としている。 (Fourth embodiment)
The laminated beam 80 according to the fourth embodiment has a slab receiving structure that receives the substrate 86 of the slab 84 by lowering the two ends of the five PCa beam members 52.

図１２に示すように、ＰＣａ製梁部材８２は、積層梁８０の外側に設けられ、成Ｓ１が中央部のＰＣａ製梁部材１０の成Ｓ２より低くされ、ＰＣａ製梁部材８２の上に載せた基板８６を支持する。基板８６が支持された状態で、基板８６と積層梁８０の上にコンクリートを敷き詰め、スラブ８４と積層梁８０が一体とされる。   As shown in FIG. 12, the PCa beam member 82 is provided outside the laminated beam 80, and the component S <b> 1 is set lower than the component S <b> 2 of the PCa beam member 10 in the center and is placed on the PCa beam member 82. The substrate 86 is supported. With the substrate 86 supported, concrete is spread over the substrate 86 and the laminated beam 80, and the slab 84 and the laminated beam 80 are integrated.

このように、ＰＣａ製梁部材８２の外側の成を低くし、積層梁８０と積層梁８０の間に架け渡される基板８６をＰＣａ製梁部材８２の上部で支持することで、容易にスラブ８４の施工ができる。   In this way, the outer side of the PCa beam member 82 is lowered, and the substrate 86 spanned between the laminated beam 80 and the laminated beam 80 is supported on the upper portion of the PCa beam member 82, so that the slab 84 can be easily obtained. Can be constructed.

本発明の第１の実施の形態に係るＰＣａ製梁部材の基本構成を示す図である。It is a figure which shows the basic composition of the beam member made from PCa which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係るＰＣａ製梁部材の配筋を示す図である。It is a figure which shows the reinforcement of the beam member made from PCa which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係るＰＣａ製梁部材と柱の仕口構成を示す図である。It is a figure which shows the joint structure of the beam member made from PCa and the column which concerns on the 1st Embodiment of this invention. 本発明に係るＰＣａ製梁部材と接合される接合プレートの構成を示す図である。It is a figure which shows the structure of the joining plate joined with the beam member made from PCa which concerns on this invention. 本発明に係るＰＣａ製梁部材と接合される接合プレートの構成を示す図である。It is a figure which shows the structure of the joining plate joined with the beam member made from PCa which concerns on this invention. 本発明の第１の実施の形態に係る柱梁の仕口を示す図である。It is a figure which shows the joint of the column beam which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係るＰＣａ製梁部材を積層した積層梁を示す図である。It is a figure which shows the laminated beam which laminated | stacked the beam member made from PCa which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係るＰＣａ製梁部材の基本構成を示す図である。It is a figure which shows the basic composition of the beam member made from PCa which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係るＰＣａ製梁部材の基本構成を示す図である。It is a figure which shows the basic composition of the beam member made from PCa which concerns on the 1st Embodiment of this invention. 本発明の第２の実施の形態に係る積層梁の基本構成を示す図である。It is a figure which shows the basic composition of the laminated beam which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施の形態に係る積層梁の基本構成を示す図である。It is a figure which shows the basic composition of the laminated beam which concerns on the 3rd Embodiment of this invention. 本発明の第４の実施の形態に係る積層梁の基本構成を示す図である。It is a figure which shows the basic composition of the laminated beam which concerns on the 4th Embodiment of this invention. 従来例の積層梁の基本構成を示す図である。It is a figure which shows the basic composition of the laminated beam of a prior art example.

符号の説明Explanation of symbols

１０ プレキャストコンクリート（ＰＣａ）製梁部材
１２ 接合面
１４ 貫通孔
１６ 柱
１８ 接合プレート
２６ 上部主筋
２８ 下部主筋
３０ トラス鉄筋
４４ 鋼板
５４ 積層梁
７４ 小梁受け部
ｄ１ 段差の高さ
Ｓ 接合プレートの厚さ DESCRIPTION OF SYMBOLS 10 Precast concrete (PCa) beam member 12 Joint surface 14 Through-hole 16 Column 18 Joint plate 26 Upper main reinforcement 28 Lower main reinforcement 30 Truss reinforcement 44 Steel plate 54 Laminated beam 74 Small beam receiving part d1 Step height S Thickness of joining plate

Claims (7)

板状のプレキャストコンクリート製部材の端部に形成され、板幅方向を上下にして柱の仕口部から張り出す接合プレートが重ね合わせられる接合面と、
前記接合面に形成され前記接合プレートの接合孔とボルト接合される貫通孔と、
を有するプレキャストコンクリート製梁部材。 Formed on the end of a plate-shaped precast concrete member, and a joining surface on which a joining plate that extends from the joint part of the column with the plate width direction up and down is superimposed;
A through hole formed on the joining surface and bolted to a joining hole of the joining plate;
A precast concrete beam member. 前記接合面には、補剛用の鋼板が取付けられている請求項１に記載のプレキャストコンクリート製梁部材。   The precast concrete beam member according to claim 1, wherein a stiffening steel plate is attached to the joint surface. 前記接合面は前記端部を一段下げて形成され、段差の高さは、前記接合プレートの厚さより小さく、又は前記接合プレートと前記鋼板を重ね合わせた厚さより小さい請求項１又は２に記載のプレキャストコンクリート製梁部材。   The said joining surface is formed by lowering | hanging the said edge part one step, The height of a level | step difference is smaller than the thickness of the said joining plate, or smaller than the thickness which piled up the said joining plate and the said steel plate. Precast concrete beam members. 前記プレキャストコンクリート製梁部材の配筋は、上部主筋と、下部主筋と、前記上部主筋及び前記下部主筋を繋ぎトラスを構成するトラス鉄筋と、を有する請求項１〜３のいずれか１項に記載のプレキャストコンクリート製梁部材。   4. The bar arrangement of the precast concrete beam member includes an upper main bar, a lower main bar, and a truss reinforcing bar that connects the upper main bar and the lower main bar to form a truss. Precast concrete beam members. 請求項１〜４のいずれか１項に記載のプレキャストコンクリート製梁部材を、板幅方向を上下にして複数枚積層して拘束した積層梁。   A laminated beam in which a plurality of precast concrete beam members according to any one of claims 1 to 4 are stacked and constrained in a plate width direction up and down. 前記積層梁を構成する外側のプレキャストコンクリート製梁部材には、小梁を支持する小梁受部が外方へ向けて突設されている請求項５に記載の積層梁。   The laminated beam according to claim 5, wherein the outer precast concrete beam member constituting the laminated beam is provided with a small beam receiving portion for supporting the small beam outwardly. 前記積層梁を構成する外側の前記プレキャストコンクリート製梁部材の成を、中央部の成より低くして、前記外側のプレキャストコンクリート製梁部材でスラブを支持する請求項５に記載の積層梁。   The laminated beam according to claim 5, wherein the outer precast concrete beam member constituting the laminated beam is made lower than the center part and the slab is supported by the outer precast concrete beam member.
JP2008098676A 2008-04-04 2008-04-04 Precast concrete beam member, and laminated beam Pending JP2009249900A (en)

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CN106149873A (en) * 2016-08-18 2016-11-23 佛山电力设计院有限公司 Prefabricated assembled concrete frame construction and preparation method thereof
CN106149873B (en) * 2016-08-18 2019-06-11 佛山电力设计院有限公司 Prefabricated assembled concrete frame construction and preparation method thereof
KR102136025B1 (en) * 2019-04-02 2020-07-20 서울시립대학교 산학협력단 Laminated Composite Beam System Using Precast Concrete Panels
CN111335464A (en) * 2020-04-08 2020-06-26 浙江大学城市学院 Fabricated concrete structure beam column connecting node and construction method thereof
CN112031159A (en) * 2020-09-03 2020-12-04 黄淮学院 Combination structure of precast beam and precast column
CN114575511A (en) * 2022-03-11 2022-06-03 中铁第一勘察设计院集团有限公司 Prefabricated floor system for thick plate conversion

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