JP5306922B2 - Reinforced concrete column and steel beam jointing device and reinforced concrete column and steel beam joint structure - Google Patents

Reinforced concrete column and steel beam jointing device and reinforced concrete column and steel beam joint structure Download PDF

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JP5306922B2
JP5306922B2 JP2009154413A JP2009154413A JP5306922B2 JP 5306922 B2 JP5306922 B2 JP 5306922B2 JP 2009154413 A JP2009154413 A JP 2009154413A JP 2009154413 A JP2009154413 A JP 2009154413A JP 5306922 B2 JP5306922 B2 JP 5306922B2
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JP2011007018A (en
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治克 角屋
亨 渡辺
俊二 藤井
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岡部株式会社
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本発明は、十分な接合性能が得られるとともに、高い施工精度を要求されることなく、容易にかつ的確にS梁をRC柱に接合することが可能な鉄筋コンクリート柱と鉄骨梁の接合装置及び鉄筋コンクリート柱と鉄骨梁の接合構造に関する。   The present invention provides a reinforced concrete column-to-steel beam joining apparatus and reinforced concrete capable of joining an S beam to an RC column easily and accurately without obtaining sufficient joining performance and requiring high construction accuracy. It relates to the connection structure between columns and steel beams.
鉄筋コンクリート(以下、「RC」という)柱とRC梁とを接合して構築するRC構造においては、特に現場打ちの場合、RC梁が所定のコンクリート強度を発現するまでは底型枠を脱型できず、支保工を撤去できないことから、RC梁の施工期間がかかり、RC梁の下方空間における他の作業に支障を来す。そこで、近年では、工期短縮や作業性の改善を図るために、H形鋼などの鉄骨梁(以下、「S梁」という)を用いた構造が採用されてきており、RC柱とS梁との接合技術が数多く開発されている。   In an RC structure constructed by joining reinforced concrete (hereinafter referred to as “RC”) columns and RC beams, the bottom formwork can be removed until the RC beams exhibit a predetermined concrete strength, especially in the case of on-site casting. Since the support work cannot be removed, the RC beam construction period is required, which hinders other work in the space below the RC beam. Therefore, in recent years, in order to shorten the work period and improve workability, a structure using steel beams such as H-shaped steel (hereinafter referred to as “S beams”) has been adopted. Many joining technologies have been developed.
しかしながら、RC柱とS梁を接合するにあたって、例えば、S梁の一部をRC柱の内部に埋設する技術においては、柱梁接合部内の配筋作業に手間がかかって施工性が良くないばかりでなく、S梁によって柱梁接合部における梁成範囲内にフープ筋を配設するのが難しい。さらに、S梁端部に作用する曲げモーメントや、それに伴い、RC柱のコンクリートに生じるS梁のフランジ面からの支圧力により、前述したようにフープ筋が配設されない場合には、柱のコンクリートが早期に剥落するといった問題が懸念される。また、コンクリート打設に際して、S梁がRC柱から突出していることから、柱梁接合部の型枠作業は非常に煩雑である。   However, when joining the RC column and the S beam, for example, in the technique of embedding a part of the S beam inside the RC column, the work of arranging the bars in the column beam joint takes time and the workability is not good. In addition, it is difficult to arrange the hoop bars in the beam forming range at the column beam joint portion by the S beam. Further, when the hoop is not arranged as described above due to the bending moment acting on the end of the S beam and the accompanying support force from the flange surface of the S beam generated in the concrete of the RC column, the concrete of the column There is a concern about the problem of peeling off early. In addition, since the S beam protrudes from the RC column at the time of placing the concrete, the work of forming the column beam joint is very complicated.
これら問題点を解決するため、上述した接合構造においては、柱梁接合部の外周面に鋼板製等の塞ぎ板を設けることが一般的であり、かえって従来のRC構造よりも施工コストが嵩むものであった。   In order to solve these problems, in the above-described joint structure, it is common to provide a closing plate made of steel plate or the like on the outer peripheral surface of the beam-column joint part, which in turn has a higher construction cost than the conventional RC structure. Met.
一方、性能面や施工面における上記問題点を改善するため、予め、RC柱内部に埋設した「通しボルト」や「接合金物」を用いて、これらにS梁をボルト接合する技術も開示されている(特許文献1及び2参照)。   On the other hand, in order to improve the above-mentioned problems in terms of performance and construction, a technique is also disclosed in which S beams are bolted to them using “through bolts” or “joining hardware” embedded in the RC pillar in advance. (See Patent Documents 1 and 2).
特許文献1の「鉄骨梁とコンクリート体との接合構造、およびその施工方法」では、コンクリート体内にPC鋼材が設置され、PC鋼材に引張力が導入されるとともにPC鋼材の端部が鉄骨梁に定着されることで、コンクリート体にプレストレスが付与され、鉄骨梁の端面がコンクリート体の側面に圧着される鉄骨梁とコンクリート体との接合構造において、コンクリート体の内部には、PC鋼材を挿通させるためのシース管が埋設され、シース管の端部には、先端が鉄骨梁の端面に当接されるとともにその中にPC鋼材が挿通される中空のカプラーが取り付けられている。   In the “joint structure between steel beam and concrete body and its construction method” in Patent Document 1, PC steel material is installed in the concrete body, tensile force is introduced into the PC steel material, and the end portion of the PC steel material becomes the steel beam. By being fixed, pre-stress is applied to the concrete body, and the steel beam is inserted into the concrete body in the joint structure between the steel body and the concrete body where the end face of the steel beam is crimped to the side surface of the concrete body. And a hollow coupler through which a PC steel material is inserted is attached to the end of the sheath tube. The tip of the sheath tube is in contact with the end surface of the steel beam.
特許文献2の「柱梁接合部」では、RC製又は鋼管コンクリート製の柱に柱梁接合部たるパネルゾーン体が介在され、このパネルゾーン体は、柱に接合すべき鉄骨製の梁の上下フランジ位置に各々配置される上下一対の接合金物から構成され、かつ、各接合金物にはコンクリートあるいは鉄筋用の通し孔がそれぞれ設けられ、各接合金物の各側面には、ボルト締結用金物を介して前記梁の上下フランジの端部がそれぞれボルト締結されるようになっている。   In the “column-beam joint” of Patent Document 2, a panel zone body serving as a column beam joint is interposed in a column made of RC or steel pipe concrete, and this panel zone body is located above and below the steel beam to be joined to the column. It consists of a pair of upper and lower joint hardware arranged at the flange position, and each joint hardware is provided with a through hole for concrete or reinforcing bar, and a bolt fastening hardware is provided on each side surface of each joint hardware. Thus, the ends of the upper and lower flanges of the beam are respectively bolted.
さらに、特許文献3が知られている。特許文献3の「被覆鋼管コンクリート柱を用いた構造」では、一階毎に床上端レベルで区切られたプレキャスト鉄筋コンクリート材で鋼管柱を被覆し、梁との仕口部分はプレキャスト鉄筋コンクリート部材に設けられた孔を通して、プレキャスト鉄筋コンクリート部材の上から梁をボルトで鋼管柱に接合し、現場打ちコンクリートを鋼管柱内部だけにするようにしている。この技術は、RC柱ではないものの、鉄筋を埋設したコンクリートで被覆した鋼管柱(被覆鋼管コンクリート柱)に孔を形成し、その孔と連通する鋼製筒部材を鋼管柱外周面に設けるとともに、その鋼製筒部材に高力ボルトを挿通させることでS梁を接合するものである。   Further, Patent Document 3 is known. In “Structure using covered steel pipe concrete column” of Patent Document 3, the steel pipe column is covered with a precast reinforced concrete material divided at the upper floor level for each floor, and the joint with the beam is provided in the precast reinforced concrete member. Through the hole, the beam is joined to the steel pipe column with bolts from the top of the precast reinforced concrete member so that the cast-in-place concrete is only inside the steel pipe column. Although this technique is not an RC pillar, a hole is formed in a steel pipe pillar (coated steel pipe concrete pillar) covered with concrete in which reinforcing bars are embedded, and a steel cylinder member communicating with the hole is provided on the outer peripheral surface of the steel pipe pillar, The S beam is joined by inserting a high-strength bolt through the steel cylinder member.
特開2007−211449号公報Japanese Patent Laid-Open No. 2007-211449 特開平03−244725号公報Japanese Patent Laid-Open No. 03-244725 特開平07−062741号公報Japanese Patent Application Laid-Open No. 07-062741
これらボルト接合による背景技術は、従来よりも施工性に優れるが、以下のような課題が挙げられる。   Although the background technology by these bolt joining is excellent in workability compared with the past, the following subjects are mentioned.
通しボルトは、RC柱の全幅で埋め込まれるため、接合性能として剛性が低くなってしまい、その傾向は、RC柱が大型化することで顕著に現れる。特許文献1では、シース管に挿入したPC鋼材に張力を付与することで性能面の問題解決を企図しているが、現場にて全てのPC鋼材に一定の張力を導入することは非常に難しい。さらに、柱梁接合部は高所であるため、S梁を仮固定した状態での緊張装置による張力導入作業は非常に手間がかかる。   Since the through bolt is embedded in the entire width of the RC column, the rigidity is lowered as the joining performance, and this tendency appears remarkably when the RC column is enlarged. In patent document 1, although the problem of a performance side is intended by giving tension | tensile_strength to PC steel material inserted in the sheath pipe | tube, it is very difficult to introduce fixed tension | tensile_strength to all PC steel materials on the spot. . Furthermore, since the beam-column joint is high, the work of introducing the tension by the tensioning device with the S beam temporarily fixed is very laborious.
プレキャスト柱などであれば、予めPC鋼材に一定の張力を付与することも可能だが、PC鋼材両端部の雄ネジ部分や張力を保持するナットがRC柱外周面から突出した状態になるため、柱運搬時に雄ネジ部分が曲がってしまうなど、損傷を来す虞がある。この点は、通しボルトであっても同様である。   If it is a precast pillar, etc., it is possible to apply a certain tension to the PC steel in advance. However, the male screw parts at both ends of the PC steel and nuts that hold the tension protrude from the outer peripheral surface of the RC pillar. There is a risk of damage such as bending of the male screw during transportation. This also applies to through bolts.
ボルトによるRC柱とS梁の接合では、RC柱外周面とS梁端部との境界面、すなわち柱と梁のせん断面に、雄ネジ部分が位置することとなる。雄ネジ部分は変形能に乏しく、従って変形性能が劣ることになる。   In the joining of the RC column and the S beam by the bolt, the male screw portion is located on the boundary surface between the outer peripheral surface of the RC column and the end of the S beam, that is, the shear surface of the column and the beam. The male screw portion has poor deformability, and therefore the deformability is poor.
また、S梁端部には、ボルト接合用として、ボルト孔を形成したエンドプレートが取り付けられ、このボルト孔にボルトが挿通されるが、S梁端部に大きなせん断力が作用したり、外力の作用でPC鋼材にかけたプレストレスが相殺されたり、あるいは、上記境界面におけるせん断方向摩擦力が低下すると、ボルト孔とボルトの相対移動が生じ、これによりボルト孔内面とボルトの雄ネジ部分とが点接触状態になる虞がある。点接触状態になると、その部分に曲げ(引張)せん断力が集中することとなり、接合性能が低下して、脆性的な破壊やせん断破壊が生じる虞がある。   In addition, an end plate having a bolt hole is attached to the end of the S beam for bolt connection, and a bolt is inserted into the bolt hole. However, a large shearing force acts on the end of the S beam or an external force is applied. When the prestress applied to the PC steel material is canceled by the action of the above, or when the shearing direction frictional force at the boundary surface is reduced, the bolt hole and the bolt are relatively moved. May be in a point contact state. When in a point contact state, bending (tensile) shear force concentrates on the portion, joining performance is lowered, and brittle fracture or shear fracture may occur.
RC柱内部に埋設する通しボルトやシース管、接合金物は、これらに接合されるボルトと当該ボルトを挿通するボルト孔のクリアランスが数mm程度と僅かであるため、精度良く施工しないと、所定の位置にエンドプレート、そしてまたS梁を接合できない虞もある。   The through-bolts, sheath tubes, and metal fittings embedded in the RC pillar have a clearance of about several millimeters between the bolts to be joined to these bolts and the bolts. There is also a possibility that the end plate and also the S beam cannot be joined at the position.
特許文献2の接合金物は、S梁を接合した後にコンクリートを打設する必要があることから、型枠等の作業性が悪く、施工に手間がかかるという課題もある。   Since the joint hardware of Patent Document 2 needs to cast concrete after joining the S beams, there is a problem that workability of the formwork and the like is poor and construction is troublesome.
特許文献3は、鋼管柱内部にコンクリートを打設する前に、予め鋼製筒部材に高力ボルトを挿通して、鋼管柱とS梁を接合しておく必要があり、鋼管柱内部での接合作業性が良くなく、梁成が大きくなればなるほど、困難性が増すという課題がある。また、柱にS梁を直接接合するため、その境界面では構造的に不連続となり、S梁から柱への応力伝達が十分になされたいため、接合部の性能が懸念される。   In Patent Document 3, before placing concrete in a steel pipe column, it is necessary to insert a high-strength bolt into a steel tube member in advance to join the steel pipe column and the S beam. There is a problem that difficulty is increased as the workability of the joint is not good and the beam formation becomes large. Further, since the S beam is directly joined to the column, the boundary surface is structurally discontinuous, and stress transmission from the S beam to the column is desired to be sufficiently performed.
本発明は上記従来の課題に鑑みて創案されたものであって、十分な接合性能が得られるとともに、高い施工精度を要求されることなく、容易にかつ的確にS梁をRC柱に接合することが可能なRC柱とS梁の接合装置及びRC柱とS梁の接合構造を提供することを目的とする。   The present invention was devised in view of the above-described conventional problems, and provides sufficient joining performance and easily and accurately joins an S beam to an RC column without requiring high construction accuracy. An object of the present invention is to provide an RC column / S beam joining apparatus and an RC column / S beam joining structure.
本発明にかかるRC柱とS梁の接合装置は、鉄筋コンクリート柱に鉄骨梁を接合するための装置であって、フープ筋内方に配設して上記鉄筋コンクリート柱に埋設するための接合金物と、該接合金物に基端部分を接合し、先端部分のネジ孔を上記鉄筋コンクリート柱の側面に開口すべく、上記フープ筋を避けて該鉄筋コンクリート柱に埋設するための雌ネジ部材と、ルーズホールが形成され、上記鉄筋コンクリート柱の側面との間にグラウト充填空間を形成すべく、該鉄筋コンクリート柱の側面に面する上記鉄骨梁の端部に設けるためのエンドプレートと、該エンドプレートと上記雌ネジ部材を結合するために上記ルーズホールに挿通して設けられ、上記ネジ孔を介して上記雌ネジ部材と螺合される第1ネジ部が一端に形成され、他端に上記エンドプレートと締結される第2ネジ部が形成されると共に、該第1ネジ部と該第2ネジ部の間に位置して上記鉄筋コンクリート柱の側面を経過する箇所に、軸体部が形成された接合ネジ部材とを備えたことを特徴とする。   An RC column and S beam joining device according to the present invention is a device for joining a steel beam to a reinforced concrete column, and is provided inside a hoop bar and embedded in the reinforced concrete column, A loose hole is formed with a female screw member for joining the base end portion to the joint hardware and opening the screw hole at the tip portion to the side surface of the reinforced concrete column so as to be embedded in the reinforced concrete column while avoiding the hoop. An end plate provided at an end portion of the steel beam facing the side surface of the reinforced concrete column, and the end plate and the female screw member to form a grout filling space with the side surface of the reinforced concrete column. A first screw part is formed at one end and is inserted into the loose hole to be coupled and screwed into the female screw member through the screw hole. A second screw portion to be fastened to the end plate is formed, and a shaft body portion is formed at a location between the first screw portion and the second screw portion and passing through the side surface of the reinforced concrete column. And a joining screw member.
本発明にかかるRC柱とS梁の接合構造は、前記鉄筋コンクリート柱と鉄骨梁の接合装置を用い、前記鉄筋コンクリート柱には、前記雌ネジ部材を接合した前記接合金物が埋設され、前記鉄骨梁には、前記エンドプレートが設けられ、前記ルーズホールに挿通され、上記鉄筋コンクリート柱の側面を前記軸体部が経過して、前記第1ネジ部が上記雌ネジ部材に螺合されると共に、前記第2ネジ部が上記エンドプレートに締結される前記接合ネジ部材により、該鉄筋コンクリート柱の側面に上記鉄骨梁が接続され、上記鉄筋コンクリート柱の側面と上記エンドプレートとの間に上記ルーズホールに亘ってグラウトが充填されることを特徴とする。   The RC column and S beam joint structure according to the present invention uses the reinforced concrete column / steel beam joining device, and the reinforced concrete column is embedded with the joint hardware joined to the female screw member. The end plate is provided, inserted into the loose hole, the shaft portion passes through the side surface of the reinforced concrete column, the first screw portion is screwed to the female screw member, and the first The steel beam is connected to the side surface of the reinforced concrete column by the joining screw member with two screw portions fastened to the end plate, and the grout is extended over the loose hole between the side surface of the reinforced concrete column and the end plate. Is filled.
本発明にかかるRC柱とS梁の接合装置及びRC柱とS梁の接合構造にあっては、十分な接合性能が得られるとともに、高い施工精度を要求されることなく、容易にかつ的確にS梁をRC柱に接合することができる。   In the RC column and S beam joining apparatus and the RC column and S beam joining structure according to the present invention, sufficient joining performance can be obtained, and high construction accuracy is easily and accurately required. S beams can be joined to RC columns.
本発明に係るRC柱とS梁の接合装置の第1実施形態に適用される接合金物を示す斜視図である。It is a perspective view which shows the joining metal hardware applied to 1st Embodiment of the joining apparatus of RC pillar and S beam which concerns on this invention. 図1の接合金物に雌ネジ部材を接合した様子を示す斜視図である。It is a perspective view which shows a mode that the internal thread member was joined to the metal fitting of FIG. 図2に示した雌ネジ部材付きの接合金物の正面図である。It is a front view of the joining metal fitting with the internal thread member shown in FIG. 図2に示した雌ネジ部材付きの接合金物の側面図である。It is a side view of the joining metal fitting with the internal thread member shown in FIG. 図2に示した雌ネジ部材付きの接合金物をRC柱に埋設した状態の平面図である。It is a top view of the state which embed | buried the metal fitting with a female screw member shown in FIG. 2 in RC pillar. 本発明に係るRC柱とS梁の接合構造の好適な実施形態を説明するための、S梁の接合状況を示す斜視図である。It is a perspective view which shows the joining condition of S beam for demonstrating suitable embodiment of the junction structure of RC pillar and S beam which concerns on this invention. 図6に示したRC柱とS梁の接合構造の要部拡大側断面図である。It is a principal part expanded side sectional view of the junction structure of RC pillar and S beam shown in FIG. 図6に示したRC柱とS梁の接合構造の一部破断平面図である。FIG. 7 is a partially broken plan view of the joint structure of the RC column and the S beam shown in FIG. 6. 本発明に係るRC柱とS梁の接合装置の第2実施形態に適用される接合金物を示す斜視図である。It is a perspective view which shows the joining metal hardware applied to 2nd Embodiment of the joining apparatus of RC pillar and S beam which concerns on this invention. 図9の接合金物に雌ネジ部材を接合した様子を示す斜視図である。It is a perspective view which shows a mode that the internal thread member was joined to the joining metal fitting of FIG. 図10に示した雌ネジ部材付きの接合金物の正面図である。It is a front view of the joining metal fitting with the internal thread member shown in FIG. 図10に示した雌ネジ部材付きの接合金物をRC柱に埋設した状態の平面図である。It is a top view of the state which embed | buried the joint metal fitting with the internal thread member shown in FIG. 10 in RC pillar. 図10に示した雌ネジ部材付きの接合金物をRC柱に埋設した状態の側面図である。It is a side view of the state which embed | buried the metal fitting with a female screw member shown in FIG. 10 in RC pillar. 図10に示した雌ネジ部材付き接合金物を中央柱に適用した場合のRC柱とS梁の接合構造の一部破断平面図である。It is a partially broken top view of the junction structure of RC pillar and S beam at the time of applying the joint metal fitting with a female screw member shown in Drawing 10 to a central pillar. 本発明にかかるRC柱とS梁の接合装置及びRC柱とS梁の接合構造の変形例を示す一部破断平面図である。It is a partially broken top view which shows the modification of the joining apparatus of RC pillar and S beam concerning this invention, and the joining structure of RC pillar and S beam. 本発明に係るRC柱とS梁の接合装置に適用される接合金物の変形例を示す斜視図である。It is a perspective view which shows the modification of the joining metal hardware applied to the joining apparatus of RC pillar and S beam which concerns on this invention.
以下に、本発明に係るRC柱とS梁の接合装置及びRC柱とS梁の接合構造の好適な実施形態を、添付図面を参照して詳細に説明する。図1から図8には、RC柱とS梁の接合装置の第1実施形態が示されている。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an RC column / S beam joining apparatus and an RC column / S beam joining structure according to the present invention will be described in detail with reference to the accompanying drawings. 1 to 8 show a first embodiment of a joining apparatus for RC columns and S beams.
RC柱1は従来周知のように、柱主筋2及び柱主筋2周りに配筋したフープ筋3を、柱のコンクリート4内部に埋設して形成される。S梁5も従来周知のように、H形鋼などで構成される。接合金物6は、RC柱1に埋設され、当該RC柱1にS梁5を接合して定着するための部品である。接合金物6は、鋼板を互いに溶接接合することで構成される。H形鋼を組み込んで構成するようにしてもよい。   As is well known in the art, the RC column 1 is formed by embedding a column main reinforcement 2 and a hoop bar 3 arranged around the column main reinforcement 2 in the concrete 4 of the column. The S beam 5 is also composed of H-section steel or the like as is well known in the art. The metal joint 6 is a component that is embedded in the RC pillar 1 and that joins and fixes the S beam 5 to the RC pillar 1. The metal joint 6 is formed by welding steel plates to each other. You may make it comprise and comprise H-section steel.
接合金物6の平面外形寸法は、RC柱1に埋設されるフープ筋3内方に配設し得るように、当該フープ筋3の内径寸法よりも小さく設定される。さらに具体的には、接合金物6は、フープ筋3の内側に配設される柱主筋2と干渉しないように、当該柱主筋2の配筋位置内方に納まる平面外形寸法で形成される。   The planar outer dimension of the metal joint 6 is set to be smaller than the inner diameter dimension of the hoop bar 3 so that it can be disposed inside the hoop bar 3 embedded in the RC column 1. More specifically, the joint hardware 6 is formed with a planar outer dimension that fits inside the bar arrangement position of the column main bar 2 so as not to interfere with the column main bar 2 arranged inside the hoop bar 3.
接合金物6の平面断面形状は、S梁5が四方から接合される中央柱に埋設される接合金物であれば、これらS梁5の配置に対応させて少なくとも4面を有する形態で、S梁5が三方もしくは左右二方から接合される側柱に埋設されるものであれば、これらS梁5の配置に対応させて少なくとも3面もしくは2面を有する形態で、S梁5が直交する方向から接合される隅柱に埋設されるものであれば、これらS梁5の配置に対応させて少なくとも直交する配置で2面を有する形態で形成される。もちろん、それ以上の面を有する平面断面形状で形成してもよい。   If the S cross-section of the metal joint 6 is a metal joint embedded in the central column where the S beam 5 is joined from all directions, the S beam 5 has at least four surfaces corresponding to the arrangement of these S beams 5. If 5 is embedded in a side pillar joined from three sides or two sides, the direction in which S beams 5 are orthogonal in a form having at least three or two surfaces corresponding to the arrangement of these S beams 5 As long as it is embedded in the corner pillar to be joined, it is formed in a form having two surfaces at least in an orthogonal arrangement corresponding to the arrangement of these S beams 5. Of course, you may form in the plane cross-sectional shape which has the surface beyond it.
図1から図5には、中央柱に適用するために、平面断面形状が4面を有する閉鎖型断面の正方形状に形成された接合金物6が示されている。接合金物6の平面断面形状は、閉鎖型断面に限らず、十字形状などの開断面形状であってもよい(図15参照)。   FIGS. 1 to 5 show a metal joint 6 formed in a square shape with a closed cross section having a plane cross section having four surfaces for application to the central column. The planar cross-sectional shape of the metal joint 6 is not limited to a closed cross section, and may be an open cross-sectional shape such as a cross shape (see FIG. 15).
図1には、第1実施形態の接合金物6が具体的に示されている。この接合金物6は、1つのH形鋼7に、鋼板をT字状に組んで作成した4つのT字ユニット8を組み付けることで構成されている。H形鋼7は、長さ寸法が接合金物6の高さ寸法に設定され、柱高さ方向に沿う縦向きで用いられる。   FIG. 1 specifically shows the metal joint 6 according to the first embodiment. This metal joint 6 is configured by assembling four T-shaped units 8 formed by assembling steel plates in a T-shape to one H-section steel 7. The H-shaped steel 7 has a length dimension set to a height dimension of the joint hardware 6 and is used in a vertical direction along the column height direction.
4つのT字ユニット8は、H形鋼7の上方部分及び下方部分それぞれに2つずつ、H形鋼7のフランジ7a間を閉塞するように組み付けられる。具体的にはH形鋼7の上方部分においては、2つのT字ユニット8は、H形鋼7のウエブ7bを挟んでその両面に、それらの脚片8a下端が接合され、それらの左右方向腕片8b両端が各フランジ7a先端に接合される。H形鋼7の下方部分においても、同様にして、2つのT字ユニット8が接合される。   Four T-shaped units 8 are assembled so as to close between the flanges 7 a of the H-section steel 7, two at each of an upper portion and a lower portion of the H-section steel 7. Specifically, in the upper part of the H-section steel 7, the two T-shaped units 8 have their leg pieces 8 a lower ends joined to both sides of the web 7 b of the H-section steel 7. Both ends of the arm piece 8b are joined to the tips of the flanges 7a. In the lower part of the H-section steel 7 as well, the two T-shaped units 8 are joined in the same manner.
これらT字ユニット8及びH形鋼7により、S梁5の上端及び下端に対応する接合金物6の上部及び下部にはそれぞれ、平面外形輪郭が閉鎖型断面の正方形状で、内部に十字形状の骨組みを備える中空筒状の上部接合部6a及び下部接合部6bが形成される。   With these T-shaped unit 8 and H-shaped steel 7, the upper and lower portions of the joint metal 6 corresponding to the upper and lower ends of the S beam 5 are respectively square-planar in outline with a closed cross section and cross-shaped inside. A hollow cylindrical upper joint portion 6a and lower joint portion 6b having a skeleton are formed.
これら上部接合部6aと下部接合部6bで挟まれた接合金物6の中央部(H形鋼7の中間部分)には、上下のT字ユニット8により横向き開口部9aが区画形成され、これにより平面断面形状がH形鋼7のウエブ7bとフランジ7aによるH形状の開断面であって、中空筒体状の上部及び下部接合部6a,6bに連通して柱のコンクリート4を流通させるコンクリート流通部9が形成される。   A horizontal opening 9a is defined by the upper and lower T-shaped units 8 at the center portion (intermediate portion of the H-shaped steel 7) of the metal fitting 6 sandwiched between the upper joint portion 6a and the lower joint portion 6b. Concrete distribution in which the cross-sectional shape of the plane is an H-shaped open section by the web 7b and flange 7a of the H-section steel 7, and the column concrete 4 is circulated in communication with the upper and lower joints 6a, 6b of the hollow cylindrical body Part 9 is formed.
コンクリート流通部9に位置するウエブ7b部分には、これを貫通して、柱のコンクリート4を流通させる大径の丸穴部10が形成される。H形鋼7のウエブ7bの上下端縁及びT字ユニット8の各脚片8aの上下端縁には、弧状の切り欠き部11が形成される。   A large-diameter round hole portion 10 is formed in the web 7b portion located in the concrete distribution portion 9 so as to penetrate the concrete 4 as a pillar. Arc-shaped notches 11 are formed on the upper and lower edges of the web 7 b of the H-shaped steel 7 and the upper and lower edges of each leg piece 8 a of the T-shaped unit 8.
これら切り欠き部11、丸穴部10、並びにT字ユニット8間の横向き開口部9aにより、柱のコンクリート4の充填性と、接合金物6の軽量化が図られる。H形鋼7について、これに代えて、鋼板をH字状に組んで作成したH字ユニットを用いるようにしてもよい。   By these notches 11, round holes 10, and lateral openings 9 a between the T-shaped units 8, the filling property of the column concrete 4 and the weight reduction of the joint hardware 6 can be achieved. Instead of this, an H-shaped unit formed by assembling steel plates into an H shape may be used for the H-shaped steel 7.
接合金物6には、RC柱1に埋設するための直管状の雌ネジ部材12の基端部分12aが接合される。雌ネジ部材12は、S梁5を接合金物6に結合するための部品である。雌ネジ部材12は鋼製で形成され、図7に示すように内部にネジ穴12bが形成される。第1実施形態にあっては、雌ネジ部材12の基端部分12aは、接合金物6の4面、すなわちH形鋼7の各フランジ7a及びT字ユニット8の左右方向腕片8bに形成されたボルト挿通孔13に挿通される高力ボルト14をネジ孔12bに螺合することで、接合金物6に接合される。   A base end portion 12 a of a straight tubular female screw member 12 to be embedded in the RC pillar 1 is joined to the joint metal 6. The female screw member 12 is a component for coupling the S beam 5 to the metal fitting 6. The female screw member 12 is made of steel and has a screw hole 12b formed therein as shown in FIG. In the first embodiment, the base end portion 12 a of the female screw member 12 is formed on the four surfaces of the joint metal 6, that is, the flanges 7 a of the H-shaped steel 7 and the left and right arm pieces 8 b of the T-shaped unit 8. The high-strength bolt 14 inserted through the bolt insertion hole 13 is screwed into the screw hole 12b, thereby being joined to the metal fitting 6.
雌ネジ部材12の先端部分12cは、当該先端部分12cのネジ孔12bがRC柱1の側面に開口するように、RC柱1の側面に、ほぼ面一に揃えて配置される。ネジ孔12bがRC柱1の側面に開口するとは、雌ネジ部材12がRC柱1の側面から突出して、先端部分12cのネジ孔12bがRC柱1の側面位置よりも外方で開口する状態を除く意味である。他方、RC柱1の側面位置から僅かながら没していても、当該RC柱1の側面に先端部分12cのネジ孔12bが開口している状態を含む意味である。   The distal end portion 12 c of the female screw member 12 is arranged substantially flush with the side surface of the RC column 1 such that the screw hole 12 b of the distal end portion 12 c opens on the side surface of the RC column 1. When the screw hole 12b opens to the side surface of the RC column 1, the female screw member 12 protrudes from the side surface of the RC column 1, and the screw hole 12b of the tip end portion 12c opens outside the side surface position of the RC column 1. This means that On the other hand, even if it is slightly submerged from the side surface position of the RC column 1, this means that the screw hole 12 b of the tip end portion 12 c is open on the side surface of the RC column 1.
雌ネジ部材12は、RC柱1のフープ筋3の配設位置を避けて、設けられる。従って、接合金物6のボルト挿通孔13位置は、フープ筋3の配筋位置を避けて設定される。図示例にあっては、雌ネジ部材12は、接合金物6の上部及び下部接合部6a,6bの各4面に4つずつ、計32個配設される。   The female screw member 12 is provided avoiding the position where the hoop muscle 3 of the RC pillar 1 is disposed. Therefore, the position of the bolt insertion hole 13 of the metal joint 6 is set to avoid the bar arrangement position of the hoop bar 3. In the illustrated example, a total of 32 female screw members 12 are arranged, four on each of the four surfaces of the upper and lower joints 6a and 6b of the joint hardware 6.
雌ネジ部材12の先端部分12cの端縁には図7に示すように、RC柱1とS梁5の接合部分のせん断性能を向上するために、ネジ孔を形成しないネジ無し孔部12dが形成される。ネジ無し孔部12dは例えば、ネジ孔12bに対し面取りなどを施したザグリによって形成される。   As shown in FIG. 7, an unthreaded hole portion 12 d that does not form a screw hole is formed at the edge of the distal end portion 12 c of the female screw member 12 in order to improve the shear performance of the joint portion of the RC column 1 and the S beam 5. It is formed. The screwless hole portion 12d is formed by, for example, a counterbore obtained by chamfering the screw hole 12b.
図6から図8には、RC柱1の側面に面する各S梁5の端部に設けるためのエンドプレート15が示されている。エンドプレート15は鋼製で形成され、例えばH形鋼製のS梁5の上下フランジ5a及びウエブ5bに溶接接合される。エンドプレート15は、これにリブを形成するなどして、S梁5にボルト接合するようにしてもよい。エンドプレート15は、S梁5端部の外形寸法よりも一回り大きな外形寸法で形成される。   6 to 8 show an end plate 15 provided at the end of each S beam 5 facing the side surface of the RC pillar 1. The end plate 15 is made of steel, and is welded to, for example, the upper and lower flanges 5a and the web 5b of the S beam 5 made of H-shaped steel. The end plate 15 may be bolted to the S beam 5 by forming a rib on the end plate 15. The end plate 15 is formed with an outer dimension that is slightly larger than the outer dimension of the end of the S beam 5.
エンドプレート15は、RC柱1の側面との間に、グラウト材G充填用のグラウト充填空間Qを形成するために、S梁5端部に接合された状態で、RC柱1の側面から間隔を空けて配置される。エンドプレート15には、雌ネジ部材12のネジ孔12b位置に対応させて、ルーズホール16が貫通形成される。   The end plate 15 is spaced from the side surface of the RC column 1 while being joined to the end of the S beam 5 in order to form a grout filling space Q for filling the grout material G between the end plate 15 and the side surface of the RC column 1. It is arranged with a gap. A loose hole 16 is formed through the end plate 15 so as to correspond to the position of the screw hole 12 b of the female screw member 12.
ルーズホール16には、後述するように、エンドプレート15を貫通して雌ネジ部材12のネジ孔12bに螺合される接合ネジ部材17が挿通される。ルーズホール16の穴径は、当該接合ネジ部材17を高い融通性で緩く挿通し得、かつグラウト充填空間Qに充填されるグラウト材Gが接合ネジ部材17と当該ルーズホール16との間の隙間に回り込み得るように、接合ネジ部材17の外径寸法よりも過度に大きく設定される。以上のエンドプレート15は、接合ネジ部材17を介してS梁5を雌ネジ部材12と結合し、かつ、RC柱1の側面との間にグラウト充填空間Qを形成するための部品である。   As will be described later, a joining screw member 17 that passes through the end plate 15 and is screwed into the screw hole 12 b of the female screw member 12 is inserted into the loose hole 16. The diameter of the loose hole 16 is such that the joint screw member 17 can be loosely inserted with high flexibility, and the grout material G filled in the grout filling space Q is a gap between the joint screw member 17 and the loose hole 16. It is set to be excessively larger than the outer diameter dimension of the joining screw member 17 so as to be able to go around. The above end plate 15 is a component for connecting the S beam 5 to the female screw member 12 via the joining screw member 17 and forming a grout filling space Q between the side surface of the RC pillar 1.
エンドプレート15のルーズホール16には、軸体状の接合ネジ部材17が挿通して設けられる。接合ネジ部材17は、エンドプレート15、ひいてはS梁5を、雌ネジ部材12に結合するための部品である。接合ネジ部材17には、長さ方向一端に、ネジ孔12bを介して雌ネジ部材12と螺合される第1ネジ部17aが形成される。   The loose hole 16 of the end plate 15 is provided with a shaft-like joining screw member 17 inserted therethrough. The joining screw member 17 is a component for coupling the end plate 15 and eventually the S beam 5 to the female screw member 12. The joining screw member 17 is formed with a first screw portion 17a that is screwed into the female screw member 12 through the screw hole 12b at one end in the length direction.
接合ネジ部材17の他端には、エンドプレート15に締結するための第2ネジ部17bが形成される。接合ネジ部材17は、ルーズホール16を封鎖するワッシャ18を介して、第2ネジ部17bにナット19が螺合されることにより、グラウト充填空間Qに充填されたグラウト材Gや雌ネジ部材12と螺合された第1ネジ部17aに締め付け反力をとって、エンドプレート15に締結される。   A second screw portion 17 b for fastening to the end plate 15 is formed at the other end of the joining screw member 17. The joint screw member 17 is configured such that the grout material G and the female screw member 12 filled in the grout filling space Q are obtained by screwing the nut 19 into the second screw portion 17b via a washer 18 that seals the loose hole 16. The first screw portion 17a screwed to the end plate 15 is fastened to the end plate 15 by applying a tightening reaction force.
接合ネジ部材17には、RC柱1とS梁5の接合部分のせん断性能を向上するために、第1ネジ部17aと第2ネジ部17bの間に位置して、RC柱1の側面を経過する箇所を含む適宜長さに亘り、ネジを形成しない軸体部17cが形成される。   In order to improve the shearing performance of the joint portion of the RC pillar 1 and the S beam 5, the joint screw member 17 is located between the first screw portion 17 a and the second screw portion 17 b and has the side surface of the RC pillar 1. A shaft body portion 17c that does not form a screw is formed over an appropriate length including a passing portion.
さらに、上記部品に加えて、グラウト充填空間Qに充填するグラウト材Gが用いられる。グラウト充填空間Qは、互いに間隔を空けて向かい合うエンドプレート15とRC柱1の側面との間に、別途型枠を配設することで区画形成される。   Further, in addition to the above components, a grout material G for filling the grout filling space Q is used. The grout filling space Q is partitioned and formed by separately providing a mold frame between the end plate 15 and the side surface of the RC pillar 1 facing each other with a space therebetween.
グラウト材Gは、一般周知の高強度無収縮モルタル等であって、エンドプレート15とRC柱1の側面の間及びルーズホール16と接合ネジ部17の隙間に充填される。また、グラウト材Gは、ネジ孔12bのネジ無し孔部12dへも充填される。   The grout material G is a generally known high-strength non-shrink mortar or the like, and is filled between the end plate 15 and the side surface of the RC pillar 1 and in the gap between the loose hole 16 and the joining screw portion 17. Further, the grout material G is also filled in the screwless hole portion 12d of the screw hole 12b.
次に、第1実施形態に係るRC柱とS梁の接合装置を用いたRC柱とS梁の接合構造について説明する。図6から図8に示すように、RC柱1の柱のコンクリート4内には、雌ネジ部材12を接合した接合金物6が埋設される。接合金物6は、フープ筋3内方に配設される。雌ネジ部材12は、フープ筋3を避けて配設され、先端部分12cのネジ孔12bがRC柱1の側面に開口される。   Next, an RC column / S beam joining structure using the RC column / S beam joining apparatus according to the first embodiment will be described. As shown in FIGS. 6 to 8, a metal fitting 6 in which a female screw member 12 is bonded is embedded in the concrete 4 of the column of the RC column 1. The metal joint 6 is disposed inside the hoop muscle 3. The female screw member 12 is disposed so as to avoid the hoop muscle 3, and the screw hole 12 b of the tip end portion 12 c is opened on the side surface of the RC pillar 1.
他方、RC柱1の側面に面するS梁5の端部には、エンドプレート15が接合して設けられる。エンドプレート15は、グラウト充填空間Qを形成するために、RC柱1の側面から間隔を空けて配置される。   On the other hand, an end plate 15 is joined to the end of the S beam 5 facing the side surface of the RC pillar 1. The end plate 15 is disposed at a distance from the side surface of the RC pillar 1 in order to form the grout filling space Q.
エンドプレート15のルーズホール16には、接合ネジ部材17が挿通して設けられる。接合ネジ部材17の第1ネジ部17aは、ネジ孔12bを介して雌ネジ部材12に先端部分12c側から螺合される。第1ネジ部17aを螺合することにより、軸体部17cはRC柱1の側面を経過する箇所に配置される。また、軸体部17cは、ネジ孔12bのネジ無し孔部12dに面して位置される。   A joining screw member 17 is inserted through the loose hole 16 of the end plate 15. The first screw portion 17a of the joining screw member 17 is screwed into the female screw member 12 from the distal end portion 12c side through the screw hole 12b. By screwing the first screw portion 17a, the shaft body portion 17c is disposed at a location where the side surface of the RC pillar 1 passes. Further, the shaft body portion 17c is positioned facing the screwless hole portion 12d of the screw hole 12b.
エンドプレート15とRC柱1の側面の間のグラウト充填空間Qには、RC柱1の側面とエンドプレート15を接合すると共に、ルーズホール16内に流入して接合ネジ部材17を当該ルーズホール16内に定着するためのグラウト材Gが充填される。グラウト材Gは、ネジ無し孔部12dへも流入する。   In the grout filling space Q between the end plate 15 and the side surface of the RC column 1, the side surface of the RC column 1 and the end plate 15 are joined and flow into the loose hole 16 and the joining screw member 17 is inserted into the loose hole 16. The grout material G for fixing inside is filled. The grout material G also flows into the screwless hole 12d.
エンドプレート15からS梁5側に突出する接合ネジ部材17の第2ネジ部17bには、ルーズホール16を封鎖するワッシャ18を介してナット19が螺合され、これにより第2ネジ部17bがエンドプレート15に締結される。接合ネジ部材17の第1ネジ部17aが、RC柱1内部に埋設した雌ネジ部材12に螺合され、第2ネジ部17bが、S梁5に接合したエンドプレート15に締結されることで、S梁5はRC柱1の側面に接合される。   A nut 19 is screwed into the second screw portion 17b of the joining screw member 17 protruding from the end plate 15 toward the S beam 5 via a washer 18 that seals the loose hole 16, whereby the second screw portion 17b is connected to the second screw portion 17b. Fastened to the end plate 15. The first screw portion 17 a of the joining screw member 17 is screwed to the female screw member 12 embedded in the RC pillar 1, and the second screw portion 17 b is fastened to the end plate 15 joined to the S beam 5. , S beam 5 is joined to the side surface of RC pillar 1.
次に、上記実施形態に係るRC柱とS梁の接合装置及びRC柱とS梁の接合構造の作用について説明する。本接合装置を用いて、本接合構造を構築する手順を説明すると、まず、H形鋼7にT字ユニット8を接合して、接合金物6を作製する。接合金物6の4面には、ボルト挿通孔13を形成しておく。   Next, the operation of the RC column / S beam joining apparatus and the RC column / S beam joining structure according to the embodiment will be described. The procedure for constructing the main joining structure using the main joining device will be described. First, the T-shaped unit 8 is joined to the H-section steel 7 to produce the joint hardware 6. Bolt insertion holes 13 are formed on the four surfaces of the metal joint 6.
柱主筋2とフープ筋3を組んで構成した柱鉄筋籠の内方に、接合金物6を挿入配置し、当該柱鉄筋籠に取付固定する。次いで、ボルト挿通孔13に高力ボルト14を挿通し、雌ネジ部材12の基端部分12aを接合金物6に接合する。雌ネジ部材12の接合金物6への取り付けは、柱鉄筋籠との融通が利けば、柱鉄筋籠に接合金物6を挿入する以前に予め行っておいてもよい。   A metal fitting 6 is inserted and arranged inside the column reinforcing bar made up of the column main reinforcing bar 2 and the hoop bar 3, and fixed to the column reinforcing bar. Next, the high-strength bolt 14 is inserted into the bolt insertion hole 13, and the base end portion 12 a of the female screw member 12 is joined to the joint hardware 6. The attachment of the female screw member 12 to the joining hardware 6 may be performed in advance before the joining hardware 6 is inserted into the pillar rebar as long as flexibility with the pillar rebar is available.
次いで、接合金物6を固定した柱鉄筋籠を柱型枠内に配設し、柱型枠内部に柱のコンクリート4を打設して、柱鉄筋籠と共に、雌ネジ部材12付きの接合金物6を柱のコンクリート4内に埋設し、RC柱1を形成する。RC柱1の形成は、プレキャストもしくは現場打ちのいずれであってもよい。   Next, the column reinforcing bar 6 to which the metal fitting 6 is fixed is disposed in the column mold frame, and the column concrete 4 is placed inside the column mold frame. Is embedded in the concrete 4 of the column to form the RC column 1. The formation of the RC pillar 1 may be either precast or on-site.
他方、S梁5の端部に、エンドプレート15を接合して取り付ける。エンドプレート15には、ルーズホール16を形成しておく。   On the other hand, an end plate 15 is joined and attached to the end of the S beam 5. A loose hole 16 is formed in the end plate 15.
RC柱1の構築位置において、RC柱1とエンドプレート15との間にグラウト充填空間Qを確保するようにして、S梁5を建て込む。次いで、接合ネジ部材17をルーズホール16に挿通し、第1ネジ部17aを雌ネジ部材12に螺合する。他方、第2ネジ部17bに、ワッシャ18を介してナット19を螺合し、これにより、S梁5をRC柱1に仮接合する。   At the construction position of the RC pillar 1, the S beam 5 is built so as to secure a grout filling space Q between the RC pillar 1 and the end plate 15. Next, the joining screw member 17 is inserted into the loose hole 16, and the first screw portion 17 a is screwed into the female screw member 12. On the other hand, the nut 19 is screwed to the second screw portion 17b via the washer 18, and thereby the S beam 5 is temporarily joined to the RC pillar 1.
次いで、型枠で取り囲んで形成したグラウト充填空間Qに、ルーズホール16内やネジ無し孔部12dへも流入させるようにしてグラウト材Gを充填し、その後、グラウト材Gを固化させる。   Next, the grout material G is filled in the grout filling space Q formed by being surrounded by the mold so as to flow into the loose hole 16 or the screwless hole 12d, and then the grout material G is solidified.
グラウト材Gが固化したら、ナット19を第2ネジ部17bに本締めする。これにより、本接合装置を用いて、本接合構造が構築される。   When the grout material G is solidified, the nut 19 is finally tightened to the second screw portion 17b. Thereby, this joining structure is constructed | assembled using this joining apparatus.
以上説明した第1実施形態に係るRC柱とS梁の接合装置及びRC柱とS梁の接合構造にあっては、RC柱1内に接合金物6を埋設していて、雌ネジ部材12の長さ及び接合ネジ部材17の長さは、接合に要する必要最小限の長さで足りるので、背景技術のようにRC柱全幅で埋め込む必要のある通しボルトに比べて、接合部分の剛性を高く確保でき、接合性能を向上することができる。   In the RC column and S beam joining apparatus and the RC column and S beam joining structure according to the first embodiment described above, the joint hardware 6 is embedded in the RC column 1, and the female screw member 12 Since the length and the minimum length of the joining screw member 17 are sufficient for joining, the joining portion has higher rigidity than a through bolt that needs to be embedded in the full width of the RC column as in the background art. It can be ensured and the joining performance can be improved.
接合金物6をフープ筋3内方に配設するようにしたので、フープ筋3及び柱主筋1と柱のコンクリート4との一体性が損なわれることはなく、柱のコンクリート4の早期剥離などを防止できて、RC柱1の構造性能を適切に確保することができる。   Since the joint metal fitting 6 is arranged inside the hoop bar 3, the integrity of the hoop bar 3 and the column main bar 1 and the column concrete 4 is not impaired, and the early peeling of the column concrete 4 can be performed. It can prevent and can ensure the structural performance of RC pillar 1 appropriately.
RC柱1に埋設する雌ネジ部材12の先端部分12cのネジ孔12bを、RC柱1の側面に開口するようにしたので、背景技術のようにRC柱の外周面から接合用部品が突出することがなく、接合箇所が損傷を受けることを防止することができる。   Since the screw hole 12b of the tip portion 12c of the female screw member 12 embedded in the RC column 1 is opened to the side surface of the RC column 1, the joining component protrudes from the outer peripheral surface of the RC column as in the background art. It is possible to prevent the joint portion from being damaged.
接合ネジ部材17に関し、せん断変形が生じるRC柱1とS梁5の接合境界面であるRC柱1の側面を経過する箇所に、ネジを形成しない軸体部17cを位置させるようにしていて、当該軸体部17cは、背景技術における雄ネジ部分よりも高いせん断変形能を発揮するので、RC柱1とS梁5との接合部分の変形性能を向上でき、せん断破壊を防止することができる。軸体部17cを、第1及び第2ネジ部17a,17bの谷径よりも細径にすれば、接合ネジ部材17は、軸体部17cで確実に変形するので、設計段階での性能把握も適切に行うことができる。   With respect to the joining screw member 17, a shaft body portion 17 c that does not form a screw is located at a location where the side surface of the RC pillar 1, which is a joining boundary surface between the RC pillar 1 and the S beam 5, where shear deformation occurs, Since the shaft body portion 17c exhibits higher shear deformability than the male screw portion in the background art, it is possible to improve the deformability of the joint portion between the RC column 1 and the S beam 5 and to prevent shear fracture. . If the shaft body portion 17c is made smaller than the root diameter of the first and second screw portions 17a and 17b, the joining screw member 17 is reliably deformed by the shaft body portion 17c. Can also be done appropriately.
RC柱1の側面とS梁5端部のエンドプレート15との間に、グラウト材Gを充填するようにしたので、構造的連続性を確保でき、S梁5からRC柱1への応力伝達を十分に確保できて、接合部分の性能を向上することができる。   Since the grout material G is filled between the side surface of the RC column 1 and the end plate 15 at the end of the S beam 5, structural continuity can be secured and stress transmission from the S beam 5 to the RC column 1 can be ensured. Can be sufficiently secured, and the performance of the joint portion can be improved.
エンドプレート15に、接合ネジ部材17との間にグラウト材Gが回り込むルーズホール16を形成したので、当該ルーズホール16内で接合ネジ部材17を定着させることができ、S梁5端部に大きなせん断力が作用したり、接合境界面におけるせん断方向の摩擦力が低下しても、ルーズホール16に対し、接合ネジ部材17が動いて点接触状態となることを防止できて、当該箇所に曲げ(引張)せん断力が集中することを防止できる。   Since the loose hole 16 into which the grout material G wraps around is formed between the end plate 15 and the joining screw member 17, the joining screw member 17 can be fixed in the loose hole 16, and the end of the S beam 5 is large. Even if a shearing force acts or a frictional force in the shearing direction at the joining boundary surface decreases, the joining screw member 17 can be prevented from moving to the point contact state with respect to the loose hole 16 and bent to the relevant part. Concentration of (tensile) shear force can be prevented.
RC柱1の側面に面する雌ネジ部材12の先端部分12cの端縁にネジ無し孔部12dを形成したので、これに充填されるグラウト材Gとも相俟って、せん断力によって接合ネジ部材17とネジ孔12bとが点接触状態になることを防止でき、せん断破壊を防止できて、せん断耐力を向上することができる。   Since the screwless hole 12d is formed at the end edge of the tip portion 12c of the female screw member 12 facing the side surface of the RC pillar 1, together with the grout material G filled therein, a joining screw member is obtained by shearing force. 17 and the screw hole 12b can be prevented from being in a point contact state, shear failure can be prevented, and shear strength can be improved.
接合金物6は、S梁5の上下フランジ5aに対応する上部及び下部接合部6a,6bを有し、各接合部6a,6bには図8に示すように、例えばH形鋼7の一対のフランジ7aと2つのT字ユニット8の脚片8aによってS梁5の長さ方向に3段、またH形鋼7のウエブ7bと2つのT字ユニット8の左右方向腕片8bによってS梁5と直交する方向に3段の補剛部分を確保することができ、高い接合性能を確保することができる。   The joint metal 6 has upper and lower joint portions 6a and 6b corresponding to the upper and lower flanges 5a of the S beam 5, and each joint portion 6a and 6b has, for example, a pair of H-section steel 7 as shown in FIG. The flange 7a and the leg pieces 8a of the two T-shaped units 8 are arranged in three stages in the length direction of the S beam 5, and the web 7b of the H-section steel 7 and the left and right arm pieces 8b of the two T-shaped units 8 are It is possible to secure a three-stage stiffening portion in a direction orthogonal to the above, and to ensure high joining performance.
他方、施工面からすると、基本的にネジ接合であり、背景技術のように煩雑で作業精度が要求される張力の導入による場合に比べて、容易に施工することができる。   On the other hand, in terms of construction, it is basically screw connection, and can be constructed more easily than in the case of introducing tension which is complicated and requires work accuracy as in the background art.
エンドプレート15にはルーズホール16を形成し、RC柱1に埋設した雌ネジ部材12と接合する接合ネジ部材17を、このルーズホール16に挿通するようにしたので、S梁5の接合位置調整に融通を利かせることができ、容易かつ的確にS梁5をRC柱1に接合することができる。   A loose hole 16 is formed in the end plate 15, and a joining screw member 17 joined to the female screw member 12 embedded in the RC pillar 1 is inserted into the loose hole 16, so that the joining position of the S beam 5 is adjusted. The S beam 5 can be joined to the RC pillar 1 easily and accurately.
S梁5をRC柱1に接合する前に、雌ネジ部材12付きの接合金物6を柱のコンクリート4中に埋設して、柱梁仕口部を含めてRC柱1を完成しておくことができ、背景技術のように、柱のコンクリートを打設する前に、S梁との接合部を施工するのに比べて、容易に施工することができる。   Before joining the S beam 5 to the RC column 1, a joint metal 6 with a female screw member 12 is embedded in the column concrete 4 to complete the RC column 1 including the column beam joint. As in the background art, it can be constructed more easily than the construction of the joint with the S beam before placing the column concrete.
また、接合金物6に、コンクリート流通部9を形成したので、柱のコンクリート4の充填性を良好に確保することができる。   Moreover, since the concrete distribution | circulation part 9 was formed in the joining metal fitting 6, the filling property of the concrete 4 of a pillar can be ensured favorable.
第1実施形態にあっては、接合ネジ部材17として第2ネジ部17bにナット19が螺合されるものを例示して説明したが、ナットを省略して、頭付きの高力ボルトなどを採用してもよい。第1及び第2ネジ部17a,17bは、転造加工によるものが好ましい。   In the first embodiment, an example in which the nut 19 is screwed to the second screw portion 17b as the joining screw member 17 has been described as an example, but the nut is omitted and a high-strength bolt with a head or the like is used. It may be adopted. The first and second screw portions 17a and 17b are preferably formed by rolling.
なお、RC柱1の側面に開口するネジ孔12bについては、使用しないネジ孔12bがある場合には、当該ネジ孔12bに栓をすることなどで塞ぐことができ、これにより、例えば中央柱に適用するものを、側柱や隅柱に流用することができる。   In addition, about the screw hole 12b opened to the side surface of the RC pillar 1, when there is a screw hole 12b that is not used, it can be closed by plugging the screw hole 12b. What is applied can be diverted to the side pillars and corner pillars.
図9から図14には、本発明に係るRC柱とS梁の接合装置の第2実施形態が示されている。第2実施形態では、接合金物6として、左右2面にS梁5が接合される側柱用のものが示されている。図14では、4面に雌ネジ部材12が取り付けられているが、使用しない雌ネジ部材12には上述したように、栓などをすればよい。   9 to 14 show a second embodiment of the RC column / S beam joining apparatus according to the present invention. In 2nd Embodiment, the thing for the side pillar by which S beam 5 is joined to two right-and-left surfaces as the metal fitting 6 is shown. In FIG. 14, the female screw member 12 is attached to the four surfaces, but the female screw member 12 that is not used may be plugged as described above.
この接合金物6は、1つのH形鋼7に、4枚の短尺な鋼板20を組み付けることで構成されている。4枚の鋼板20は、H形鋼7の上方部分及び下方部分それぞれに2枚ずつ、H形鋼7のフランジ7a間を閉塞するように組み付けられる。具体的にはH形鋼7の上方部分においては、2枚の鋼板20の縦向き両端縁がそれぞれ各フランジ7a先端に接合される。H形鋼7の下方部分においても、同様にして、2枚の鋼板20が接合される。   This metal joint 6 is configured by assembling four short steel plates 20 to one H-section steel 7. The four steel plates 20 are assembled so as to block between the flanges 7 a of the H-section steel 7, two on each of the upper portion and the lower portion of the H-section steel 7. Specifically, in the upper part of the H-section steel 7, both longitudinal end edges of the two steel plates 20 are respectively joined to the tips of the flanges 7 a. Similarly, the two steel plates 20 are joined at the lower portion of the H-section steel 7.
これら鋼板20及びH形鋼7により、S梁5の上端及び下端に対応する接合金物6の上部及び下部にはそれぞれ、平面外形輪郭が閉鎖型断面の正方形状で、内部にウエブ7bが介在する中空筒状の上部接合部6a及び下部接合部6bが形成される。これら上部接合部6aと下部接合部6bで挟まれた接合金物6の中央部(H形鋼7の中間部分)には、第1実施形態と同様に、コンクリート流通部9が形成される。   By these steel plate 20 and H-section steel 7, the upper and lower portions of the joint hardware 6 corresponding to the upper end and the lower end of the S beam 5 are respectively square in the shape of a closed cross section, and the web 7b is interposed therein. A hollow cylindrical upper joint portion 6a and lower joint portion 6b are formed. The concrete distribution part 9 is formed in the center part (intermediate part of the H-section steel 7) of the metal joint 6 sandwiched between the upper joint part 6a and the lower joint part 6b, as in the first embodiment.
コンクリート流通部9に位置するウエブ7b部分には、コンクリート流通用の丸穴部10が形成される。H形鋼7のウエブ7bの上下端縁及び各鋼板20の上下端縁には、弧状の切り欠き部11が形成される。これら切り欠き部11、丸穴部10、並びに横向き開口部9aにより、第1実施形態と同様に、柱のコンクリート4の充填性と、接合金物6の軽量化が図られる。   A round hole portion 10 for distributing concrete is formed in the web 7b portion located in the concrete distributing portion 9. Arc-shaped notches 11 are formed at the upper and lower edges of the web 7 b of the H-shaped steel 7 and the upper and lower edges of each steel plate 20. These notches 11, round holes 10, and sideways openings 9 a make it possible to fill the column concrete 4 and reduce the weight of the joint hardware 6 as in the first embodiment.
H形鋼7について、これに代えて、鋼板をH字状に組んで作成したH字ユニットを用いるようにしてもよい。第2実施形態では、ボルト挿通孔13は、H形鋼7のフランジ7aに形成されている。   Instead of this, an H-shaped unit formed by assembling steel plates into an H shape may be used for the H-shaped steel 7. In the second embodiment, the bolt insertion hole 13 is formed in the flange 7 a of the H-section steel 7.
第2実施形態では、接合金物6と雌ネジ部材12は、高力ボルトに代えて、軸体状の全ネジ部材21で接合される。全ネジ部材21は、接合金物6のボルト挿通孔13に挿通されて雌ネジ部材12のネジ孔12bに一端が螺合されると共に、フランジ7aから突出する他端がナット22で接合金物6に締結されて、雌ネジ部材12を接合金物6に接合する。その他の構成は、第1実施形態と同様であって、第1実施形態と同様の作用効果を奏する。   In the second embodiment, the metal joint 6 and the female screw member 12 are joined by a shaft-like full screw member 21 instead of a high-strength bolt. The entire screw member 21 is inserted into the bolt insertion hole 13 of the metal fitting 6 and one end is screwed into the screw hole 12b of the female screw member 12, and the other end protruding from the flange 7a is joined to the metal fitting 6 by the nut 22. Fastened to join the female screw member 12 to the metal fitting 6. Other configurations are the same as those of the first embodiment, and the same effects as those of the first embodiment are achieved.
図15には、上記実施形態の変形例が示されている。この変形例では、接合金物6は、平面断面形状が十字形状の開断面で形成される。十字形状の4つの先端にはそれぞれ、フランジ片23が接合され、このフランジ片23に、雌ネジ部材12が溶接接合Wにより取付固定される。   FIG. 15 shows a modification of the above embodiment. In this modified example, the metal joint 6 is formed with an open cross section having a cross-sectional shape in plan view. A flange piece 23 is joined to each of the four cross-shaped tips, and the female screw member 12 is attached and fixed to the flange piece 23 by welding joint W.
図16には、上記実施形態の他の変形例が示されている。この変形例は、おおよそ第1実施形態のT字ユニット8を、H形鋼7の全高に亘るように形成したものである。これら変形例にあっても、上記実施形態と同様の作用効果を奏することはもちろんである。   FIG. 16 shows another modification of the above embodiment. In this modification, the T-shaped unit 8 of the first embodiment is formed so as to cover the entire height of the H-section steel 7. Even in these modifications, it is a matter of course that the same operational effects as those of the above-described embodiment can be obtained.
1 RC柱
3 フープ筋
5 S梁
6 接合金物
12 雌ネジ部材
12a 雌ネジ部材の基端部分
12b 雌ネジ部材のネジ孔
12c 雌ネジ部材の先端部分
15 エンドプレート
16 ルーズホール
17 接合ネジ部材
17a 接合ネジ部材の第1ネジ部
17b 接合ネジ部材の第2ネジ部
17c 接合ネジ部材の軸体部
G グラウト材
Q グラウト充填空間
DESCRIPTION OF SYMBOLS 1 RC pillar 3 Hoop reinforcement 5 S beam 6 Joint metal 12 Female screw member 12a Female screw member base end part 12b Female screw member screw hole 12c Female screw member tip part 15 End plate 16 Loose hole 17 Joining screw member 17a Joining First screw portion 17b of screw member Second screw portion 17c of joint screw member Shaft body portion of joint screw member G Grout material Q Grout filling space

Claims (2)

  1. 鉄筋コンクリート柱に鉄骨梁を接合するための装置であって、
    フープ筋内方に配設して上記鉄筋コンクリート柱に埋設するための接合金物と、
    該接合金物に基端部分を接合し、先端部分のネジ孔を上記鉄筋コンクリート柱の側面に開口すべく、上記フープ筋を避けて該鉄筋コンクリート柱に埋設するための雌ネジ部材と、
    ルーズホールが形成され、上記鉄筋コンクリート柱の側面との間にグラウト充填空間を形成すべく、該鉄筋コンクリート柱の側面に面する上記鉄骨梁の端部に設けるためのエンドプレートと、
    該エンドプレートと上記雌ネジ部材を結合するために上記ルーズホールに挿通して設けられ、上記ネジ孔を介して上記雌ネジ部材と螺合される第1ネジ部が一端に形成され、他端に上記エンドプレートと締結される第2ネジ部が形成されると共に、該第1ネジ部と該第2ネジ部の間に位置して上記鉄筋コンクリート柱の側面を経過する箇所に、軸体部が形成された接合ネジ部材とを備えたことを特徴とする鉄筋コンクリート柱と鉄骨梁の接合装置。
    A device for joining steel beams to reinforced concrete columns,
    A metal fitting to be placed inside the hoop and embedded in the reinforced concrete column,
    A female screw member for embedding in the reinforced concrete column while avoiding the hoop, so as to open the screw hole of the distal end portion to the side surface of the reinforced concrete column,
    A loose hole is formed, and an end plate for providing at the end of the steel beam facing the side surface of the reinforced concrete column to form a grout filling space between the side surface of the reinforced concrete column;
    A first screw portion is formed at one end and is inserted into the loose hole to be coupled to the end plate and the female screw member, and is screwed into the female screw member through the screw hole. A second screw portion to be fastened to the end plate is formed, and a shaft body portion is located at a position between the first screw portion and the second screw portion and passing through the side surface of the reinforced concrete column. An apparatus for joining a reinforced concrete column and a steel beam, comprising a formed joining screw member.
  2. 請求項1記載の鉄筋コンクリート柱と鉄骨梁の接合装置を用い、
    前記鉄筋コンクリート柱には、前記雌ネジ部材を接合した前記接合金物が埋設され、
    前記鉄骨梁には、前記エンドプレートが設けられ、
    前記ルーズホールに挿通され、上記鉄筋コンクリート柱の側面を前記軸体部が経過して、前記第1ネジ部が上記雌ネジ部材に螺合されると共に、前記第2ネジ部が上記エンドプレートに締結される前記接合ネジ部材により、該鉄筋コンクリート柱の側面に上記鉄骨梁が接続され、
    上記鉄筋コンクリート柱の側面と上記エンドプレートとの間に上記ルーズホールに亘ってグラウト材が充填されることを特徴とする鉄筋コンクリート柱と鉄骨梁の接合構造。
    Using the reinforced concrete column and steel beam joining device according to claim 1,
    In the reinforced concrete column, the metal fitting to which the female screw member is bonded is embedded,
    The steel beam is provided with the end plate,
    The shaft is inserted into the loose hole, the shaft portion passes through the side surface of the reinforced concrete column, the first screw portion is screwed to the female screw member, and the second screw portion is fastened to the end plate. The steel beam is connected to the side surface of the reinforced concrete column by the joining screw member that is
    A joint structure of a reinforced concrete column and a steel beam, characterized in that a grout material is filled between the side surface of the reinforced concrete column and the end plate over the loose hole.
JP2009154413A 2009-06-29 2009-06-29 Reinforced concrete column and steel beam jointing device and reinforced concrete column and steel beam joint structure Active JP5306922B2 (en)

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