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 PDFInfo
- Publication number
- 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
- Authority
- JP
- Japan
- Prior art keywords
- screw
- column
- steel
- joining
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 89
- 239000010959 steel Substances 0.000 title claims description 89
- 239000011150 reinforced concrete Substances 0.000 title claims description 34
- 238000005304 joining Methods 0.000 claims description 93
- 239000002184 metals Substances 0.000 claims description 49
- 239000011440 grout Substances 0.000 claims description 28
- 239000000463 materials Substances 0.000 claims description 24
- 239000004567 concrete Substances 0.000 description 37
- 238000010276 construction Methods 0.000 description 11
- 230000000875 corresponding Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000006011 modification reaction Methods 0.000 description 6
- 230000003014 reinforcing Effects 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- 230000002093 peripheral Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 210000003205 Muscles Anatomy 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 210000001503 Joints Anatomy 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 1
- 210000002356 Skeleton Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 230000001771 impaired Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Images
Description
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.
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.
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
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)
- 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. - 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009154413A JP5306922B2 (en) | 2009-06-29 | 2009-06-29 | Reinforced concrete column and steel beam jointing device and reinforced concrete column and steel beam joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009154413A JP5306922B2 (en) | 2009-06-29 | 2009-06-29 | Reinforced concrete column and steel beam jointing device and reinforced concrete column and steel beam joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011007018A JP2011007018A (en) | 2011-01-13 |
| JP5306922B2 true JP5306922B2 (en) | 2013-10-02 |
Family
ID=43563958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009154413A Active JP5306922B2 (en) | 2009-06-29 | 2009-06-29 | Reinforced concrete column and steel beam jointing device and reinforced concrete column and steel beam joint structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5306922B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5908798B2 (en) * | 2012-06-08 | 2016-04-26 | 前田建設工業株式会社 | Connecting device and concrete member connecting device using the same |
| JP6159535B2 (en) * | 2013-01-31 | 2017-07-05 | 公益財団法人鉄道総合技術研究所 | Horizontal structure |
| KR101490808B1 (en) * | 2013-08-27 | 2015-02-06 | 이승우 | Prefabricated steel frame equipped with removable concrete form for composite member of steel and concrete |
| KR101683670B1 (en) * | 2016-04-28 | 2016-12-08 | 주식회사 엔알씨구조 | Prefabricated beam structure with concrete form |
| KR101939949B1 (en) * | 2018-06-29 | 2019-01-17 | 염정수 | Half-pc column based on framed rebar column |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2669305B2 (en) * | 1993-08-31 | 1997-10-27 | 鹿島建設株式会社 | Structure using covered steel tube concrete columns |
| JP2007162289A (en) * | 2005-12-13 | 2007-06-28 | Hironobu Kuroda | Building steel structure |
-
2009
- 2009-06-29 JP JP2009154413A patent/JP5306922B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011007018A (en) | 2011-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4721273B2 (en) | Seismic reinforcement method for existing buildings with reinforced concrete frame structures | |
| JP4649250B2 (en) | Seismic reinforcement joint structure | |
| JP4245657B1 (en) | Rigid connection structure between pier and concrete girder | |
| JP3789402B2 (en) | Crossing method of beam-to-column joints of architectural steel structures | |
| KR101520002B1 (en) | Precast Concrete Member With Assembly Plate And Fixing Channel | |
| KR101440434B1 (en) | Construction Method for Composite Type Rahmen Bridge | |
| JP4754347B2 (en) | High-strength bolt tension joint structure of concrete filled square steel tube column and beam | |
| JP2008280787A (en) | Joint structure of bearing wall made of lightweight shape steel sheet and foundation | |
| KR20060115698A (en) | Composite truss girder with multi-composite concept and improved structural performance at the junction | |
| JP2015224460A (en) | Structure and method for joining column and beam | |
| JP2006183444A (en) | Method of reinforcing opening of steel frame girder | |
| KR101453407B1 (en) | Non-welding type seismic reinforcing method for column using key hole type bolt jointed double C-type steels | |
| JP2003268878A (en) | Beam-column joint structure | |
| JP2645365B2 (en) | Beam-column joint | |
| JP2005248623A (en) | High tension bolt joint structure of column and beam having h-shaped cross section | |
| HUE030423T2 (en) | Steel plate structure and steel plate concrete wall | |
| KR20110032687A (en) | Construction method for joining steel or reinforced steel concrete column and beam with reinforcing end part | |
| KR101136926B1 (en) | Composite beam by prestressed concrete filled tube | |
| KR20060102785A (en) | Dry joint structure of precast concrete beam and column unit with bolt connector | |
| JP2008223370A (en) | Rigidly connecting structure of corner part | |
| JP2005282339A (en) | Structure for reinforcing hollow-steel-pipe steel tower by using splice l-shaped material | |
| JP5205130B2 (en) | Method for constructing a concrete structure in which a PC member and a concrete member are joined, and a method for constructing a structure comprising a joint and a beam | |
| WO2020108013A1 (en) | Partially encased structure frame assembly joint having restoration function | |
| JP6450577B2 (en) | Clamping bracket and member fixing structure using the same | |
| JP3050297B2 (en) | Seismic retrofitting method of concrete frame and joint of reinforced steel plate used for it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20120511 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130523 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130611 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130626 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 5306922 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |