JP2021055472A - Construction method of column-beam joint structure and column-beam joint structure - Google Patents

Construction method of column-beam joint structure and column-beam joint structure Download PDF

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JP2021055472A
JP2021055472A JP2019181374A JP2019181374A JP2021055472A JP 2021055472 A JP2021055472 A JP 2021055472A JP 2019181374 A JP2019181374 A JP 2019181374A JP 2019181374 A JP2019181374 A JP 2019181374A JP 2021055472 A JP2021055472 A JP 2021055472A
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column
main bar
beam member
insertion hole
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JP7330048B2 (en
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竹内　博幸
Hiroyuki Takeuchi
博幸 竹内
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Penta Ocean Construction Co Ltd
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Abstract

To provide a construction method of a column-beam joint structure which can surely join and fix beam members by precast to a column-beam joint part by precast from two or four directions.SOLUTION: A construction method of a column-beam joint structure, in precast of beam members 12 and 13 and a column-beam joint part 11, forms horizontal holes 17 through which beam main reinforcements 14 penetrate in a column-beam joint part, embeds mechanical filling joints 15 and 16 in the beam members, forms insertion holes 18 and 19 from the beam member end to the joint, installs the one beam member to the column-beam joint part, inserts the beam main reinforcements from the horizontal holes to the insertion hole of the one beam and arranges it in the joints, inserts the beam main reinforcement projecting from the column-beam joint part into the insertion hole of the other beam member and arranges it in the joints, fills the joints with a filler and joins the beam main reinforcement to the beam main reinforcement on the beam member side, fills a gap between the beam main reinforcement and the inside of the horizontal hole, and the inside of the insertion hole with the filler and fixes the beam main reinforcement, previously forms a plurality of vertical grooves on each of the joined surfaces between the two beam members and the column-beam joint part, and fills the vertical groove with the filler after joining of the beam main reinforcement.SELECTED DRAWING: Figure 1

Description

本発明は、柱梁接合構造を構築する工法および柱梁接合構造に関する。 The present invention relates to a construction method for constructing a beam-column joint structure and a beam-column joint structure.

鉄筋コンクリート構造（RC造）の建物の柱、梁をプレキャスト（以下、「PCa」と略す場合がある。）部材とした場合、その柱梁接合部における梁主筋は、通し配筋となるか、または、柱梁接合部内で機械式継ぎ手となる場合が多い（たとえば、特許文献１参照）。一方、柱梁接合部もPCa化する構工法がいくつか提案されており、柱梁接合部を含むすべての部材がPCa化された構工法として、LRV工法とスクライム工法の２工法が実用化されている。 When columns and beams of a reinforced concrete structure (RC structure) are used as precast (hereinafter, may be abbreviated as "PCa") members, the beam main reinforcement at the column-beam joint is either through reinforcement or , In many cases, it becomes a mechanical joint in the beam-column joint (see, for example, Patent Document 1). On the other hand, some construction methods have been proposed in which the beam-column joints are also converted to PCa, and two construction methods, the LRV method and the sclime method, have been put into practical use as construction methods in which all members including the beam-column joints are converted to PCa. ing.

（１）LRV工法
LRV工法（Left Right Vertical Method）の概要を図６に示す。同工法においては、図６（ａ）のように、PCa柱梁接合部から両方向に半スパン分延びるPCa梁（LRビーム）の梁主筋は、接合されるPCa梁に内蔵された機械式継ぎ手にグラウト接合される。PCa梁の接合後に、図６（ｂ）（ｃ）のように、PCa柱梁接合部の柱主筋貫通孔をPCa柱下端の柱主筋（余長≧接合部高さ＋定着長さ）が貫通し、かつ、１層下のPCa柱（Vコラム）に内蔵された機械式継ぎ手にグラウト定着する機構が基本となっている。 (1) LRV method
The outline of the LRV method (Left Right Vertical Method) is shown in FIG. In the same construction method, as shown in FIG. 6A, the beam main bar of the PCa beam (LR beam) extending by half a span in both directions from the PCa column-beam joint is a mechanical joint built in the PCa beam to be joined. Grouted. After joining the PCa beams, as shown in FIGS. 6 (b) and 6 (c), the column main bars at the lower end of the PCa columns (extra length ≥ joint height + anchoring length) penetrate through the column main bar through holes at the PCa column beam joint. However, the basic mechanism is to ground the mechanical joint built into the PCa column (V column) one layer below.

（２）スクライム-Ｈ工法
スクライム-Ｈ工法（Sumitomo Mitsui Quick RC Integration-Horizontal Method）の概要を図７に示す。図７（ａ）〜（ｄ）のように、同工法においては、PCa柱は、上部が柱梁接合部と一体となった形状で、PCa梁の梁主筋は、（柱せい＋定着長さ）以上の余長を有し、片側からPCa柱梁接合部を貫通し、逆側のPCa梁の雌孔（機械式継ぎ手）にグラウト定着する機構が基本となっている。基本的に、片側端部より１方向に順次組み立てていく施工手順となる。 (2) Slime-H method The outline of the Slime-H method (Sumitomo Mitsui Quick RC Integration-Horizontal Method) is shown in FIG. As shown in FIGS. 7A to 7D, in the same construction method, the PCa column has a shape in which the upper part is integrated with the column-beam joint, and the beam main bar of the PCa beam is (column sill + anchoring length). ) The basic mechanism is that it has a surplus length of more than that, penetrates the PCa column-beam joint from one side, and is ground-fixed to the female hole (mechanical joint) of the PCa beam on the other side. Basically, the construction procedure is to assemble sequentially in one direction from one end.

（３）TT−JOINT工法
さらにTT-JOINT工法は、柱梁接合部の中央で定着金物を両方向より定着させて、柱梁接合部には繊維補強コンクリートを打設し、せん断補強筋は配筋しないという構工法となっている。 (3) TT-JOINT method Furthermore, in the TT-JOINT method, fixing hardware is fixed from both directions at the center of the beam-column joint, fiber reinforced concrete is placed at the beam-column joint, and shear reinforcement is arranged. It is a construction method that does not.

また、特許文献２は、梁端部に埋入れされた梁主筋連結用継ぎ手を有する第１，第２ＰＣ梁と、中継筋が挿入される梁主筋孔を有する仕口パネルと、を備えるＰＣ柱梁の接合構造の接合方法において、仕口パネルの左脇に配置された第１ＰＣ梁の梁主筋連結用継ぎ手に対し仕口パネル右端から梁主筋孔に挿入された中継筋が挿入され、次に、仕口パネル右端から突出した中継筋が第２ＰＣ梁の梁主筋連結用継ぎ手に挿入されてから、仕口パネルの外表面と梁主筋孔とを連通するグラウト注入孔からグラウトが注入されて中継筋が梁主筋孔及び梁主筋連結用継ぎ手に定着されることで、仕口パネルの左脇に位置するＰＣ梁の右端部が仕口パネルに接合されるともに右脇に位置するＰＣ梁の左端部も仕口パネルに接合されることを開示する（図１２）。 Further, Patent Document 2 provides a PC column including first and second PC beams having a beam main bar connecting joint embedded in a beam end portion and a joint panel having a beam main bar hole into which a relay bar is inserted. In the method of joining the beam joining structure, the relay bar inserted into the beam main bar hole from the right end of the joint panel is inserted into the beam main bar connecting joint of the first PC beam arranged on the left side of the joint panel, and then After the relay bar protruding from the right end of the joint panel is inserted into the beam main bar connecting joint of the second PC beam, the grout is injected from the grout injection hole that communicates the outer surface of the joint panel with the beam main bar hole and relays. By fixing the streaks to the beam main bar hole and the beam main bar connecting joint, the right end of the PC beam located on the left side of the joint panel is joined to the joint panel and the left end of the PC beam located on the right side. It is disclosed that the part is also joined to the joint panel (Fig. 12).

特開2017-179997号公報Japanese Unexamined Patent Publication No. 2017-179997 特開2006-22494号公報Japanese Unexamined Patent Publication No. 2006-22494

上述の構工法は、いずれもこれまで常識的に捉えられていた鉄筋の接合方法を、一方は部材全体を貫通し、なおかつ逆側の部材に定着させると言う、発想の転換を図り、他方は、部材中央で両方からの定着で、部材内で一体化を図ると言う、画期的な継ぎ手方法となっている。 The above-mentioned construction methods change the way of thinking by changing the way of thinking, that is, one of them penetrates the entire member and is fixed to the other member, instead of the method of joining reinforcing bars, which has been generally accepted until now. It is an epoch-making joint method in which the members are fixed from both sides at the center of the members to integrate them inside the members.

しかしながら、これらの構工法は、それぞれ制限事項ないし弱点が見受けられる。前２工法については、いずれも片押しで、施工せざるを得なく、また、最終スパンでの納まり、施工方法が工法標準と異なるものと推察される。また、何れも梁PCa部材の端面同士が直接接するため、その部分の界面処理が問題となる。加えて、スクライムH工法は、梁主筋が柱上部の接合部を貫通し、向かい側の梁PCaに挿入されるが、グラウト材注入後、所要の強度が得られるまで、梁PCaの位置、高さを保持するために支保工が必要となり、サイクル工程に影響を及ぼす可能性がある。また、梁主筋が定着するPCa梁は、定着部を確保するために、断面を矩形に保つ必要があるが、一方でスラブとの取合いでは、鉄筋定着が難しい納まりとならざるを得ない。 However, each of these construction methods has some restrictions or weaknesses. It is presumed that the first two construction methods have to be constructed by pushing one side, and that the final span fits and the construction method is different from the construction method standard. In addition, since the end faces of the beam PCa members are in direct contact with each other, the interface treatment of that portion becomes a problem. In addition, in the sclime H method, the beam main bar penetrates the joint at the top of the column and is inserted into the beam PCa on the opposite side, but after injecting the grout material, the position and height of the beam PCa are obtained until the required strength is obtained. Support work is required to hold the, which may affect the cycle process. In addition, the PCa beam to which the main beam reinforcement is fixed needs to keep its cross section rectangular in order to secure the fixing portion, but on the other hand, in the connection with the slab, it is inevitable that the reinforcing bar is difficult to fix.

後の１工法については、柱梁接合部がPCa部材でなく、特殊コンクリートの場所打ちであること、に加えて、せん断補強筋不要と繊維補強コンクリートの適用の組合せについては、材料強度を含めて、都度、構造検証が必要となるものと推察される。 Regarding the latter one method, in addition to the fact that the beam-column joint is not a PCa member but cast-in-place of special concrete, the combination of the need for shear reinforcement and the application of fiber reinforced concrete includes material strength. It is presumed that structural verification is required each time.

建築、土木ともに、生産性向上が叫ばれているが、部材のPCa化（工場生産化）が生産性向上に大きく寄与することは、論を待たないところである。その適用範囲が大きければ大きいほど、現場での施工労力が削減され、工期も大幅に短縮される。PCa化は、柱、梁の各部材については、様々な構工法が提案され、実用化されているが、柱梁接合部とスラブについては、まだ開発途上と言わざるを得ない。 There are calls for productivity improvement in both construction and civil engineering, but it is undeniable that the conversion of parts to PCa (factory production) will greatly contribute to productivity improvement. The larger the scope of application, the less labor is required on-site and the shorter the construction period is. Various construction methods have been proposed and put into practical use for each member of columns and beams, but it must be said that the column-beam joints and slabs are still under development.

柱梁接合部については、柱主筋に加えて所要量のせん断補強筋が含まれ、さらに梁主筋がXY両方向から、また低層部においては上下２段筋として入り込んでくるため、柱・梁主筋とも接合部内で継ぎ手を構成することは至難と言わざるを得ない。 As for the column-beam joint, the required amount of shear reinforcement is included in addition to the column main reinforcement, and since the beam main reinforcement enters from both XY directions and in the lower part as upper and lower two-stage reinforcement, both the column and beam main reinforcement It must be said that it is extremely difficult to construct a joint within the joint.

LRV工法は、上層のPCa柱の下端から延伸した柱主筋が、スクライム−H工法は片方向から接合するPCa梁から接合部側に延伸した梁主筋が、それぞれ柱梁接合部を貫通し、他端の部材に収納された継ぎ手にグラウト定着する接合方法を基本としている。しかしながら、これらの工法は、片側から順次部材を接合しながらスパン間のフレームを構築していくため、X・Y方向とも建物の平面端部から他端に向かう施工手順となり、最終端は、いずれも最終部材にPCa梁部材の梁主筋を差し込んで定着させる納まりとなる。その場合、両方向から梁主筋を定着できる納まりのPCa柱梁接合部の構築工法があれば、最終端の部材として適用することが可能となるばかりでなく、建物平面の両端から中央に向けてPCa部材の組立て施工が可能となる。そこで、本発明者は、特願２０１８−５４３５９において、柱梁接合部の平断面中央に機械式充填継ぎ手を配置し、定着分梁主筋が延伸した梁PCaを両側から２体接合する方式の柱梁接合構造を提案した。 In the LRV method, the column main bars extending from the lower end of the upper PCa column, and in the sclime-H method, the beam main bars extending from the PCa beam joined from one direction to the joint side penetrate the column-beam joint, and others. It is based on a joining method in which the joints housed in the end members are ground-fixed. However, in these construction methods, since the frame between the spans is constructed by sequentially joining the members from one side, the construction procedure is from the plane end of the building to the other in both the X and Y directions, and the final end will eventually be. The beam main bar of the PCa beam member is inserted into the final member and fixed. In that case, if there is a method of constructing a PCa column-beam joint that can fix the beam main bars from both directions, it will not only be possible to apply it as a member at the final end, but also PCa from both ends of the building plane toward the center. Assembling and construction of members becomes possible. Therefore, in Japanese Patent Application No. 2018-54359, the present inventor arranges a mechanical filling joint in the center of the planosection of the beam-column joint, and joins two beams PCa with the main bars of the anchoring beam extended from both sides. A beam joint structure was proposed.

特許文献２のＰＣ柱梁の接合構造は、その図１２等から明らかであるが、ＰＣ梁の端部に継ぎ手が配置され、梁主筋の定着長さが継ぎ手長さの半分以下であるため、梁主筋をＰＣ梁に確実に定着させる機構となっていない。 The joint structure of the PC column beam of Patent Document 2 is clear from FIG. 12 and the like, but since the joint is arranged at the end of the PC beam and the fixing length of the beam main bar is less than half of the joint length. It is not a mechanism to securely fix the beam main bar to the PC beam.

本発明は、上述のような従来技術の問題に鑑み、プレキャストによる梁部材同士を２または４方向からプレキャストによる柱梁接合部に確実に接合し定着させることのできる柱梁接合構造の構築工法および柱梁接合構造を提供することを目的とする。 In view of the above-mentioned problems of the prior art, the present invention provides a method for constructing a beam-column joint structure capable of reliably joining and fixing precast beam members to a beam-column joint portion by precast from two or four directions. It is an object of the present invention to provide a beam-column joint structure.

上記目的を達成するための柱梁接合構造の構築工法は、プレキャストによる一方の梁部材と他方の梁部材とをプレキャストによる柱梁接合部に接合することで柱梁接合構造を構築する工法であって、前記柱梁接合部において梁主筋が貫通するような横孔および前記梁部材と接合する接合面に複数の縦溝を形成しておき、
前記２つの梁部材において梁部材端部から所定距離の位置に機械式充填継ぎ手を予め埋め込むとともに前記梁部材端部から前記機械式充填継ぎ手まで延びる挿入孔および前記柱梁接合部と接合する接合面に複数の縦溝を形成しておき、
前記一方の梁部材を前記柱梁接合部に据え付ける際に、梁主筋を前記一方の梁部材と反対側の前記柱梁接合部の横孔を通して前記一方の梁部材の挿入孔に挿入し、その先端部分を前記機械式充填継ぎ手内に配置し、
次に、前記一方の梁部材と反対側の前記柱梁接合部から突き出た状態の前記梁主筋が前記他方の梁部材の前記挿入孔に挿入されるようにして前記他方の梁部材を据え付け、前記柱梁接合部から突き出た状態の前記梁主筋の先端部分を前記他方の梁部材の前記機械式充填継ぎ手内に配置し、
次に、前記機械式充填継ぎ手内に充填材を充填し、前記機械式充填継ぎ手内で前記梁主筋と前記梁部材側の梁主筋とを接合するとともに、前記梁主筋と前記横孔内および前記挿入孔内との間の隙間に充填材を充填し、前記梁主筋を前記横孔内および前記挿入孔内に定着させ、
前記梁主筋の接合後に前記縦溝に充填材を充填して前記接合面において付着力を確保するものである。 The beam-column joint structure construction method for achieving the above objectives is a construction method for constructing a beam-column joint structure by joining one beam member and the other beam member by precasting to the beam-column joint portion by precasting. Therefore, a plurality of vertical grooves are formed in the horizontal hole through which the beam main bar penetrates in the beam-column joint and the joint surface to be joined with the beam member.
In the two beam members, a mechanical filling joint is preliminarily embedded at a position at a predetermined distance from the beam member end, and an insertion hole extending from the beam member end to the mechanical filling joint and a joint surface to be joined to the column-beam joint. Multiple flutes are formed in the
When installing the one beam member in the column-beam joint, the beam main bar is inserted into the insertion hole of the one beam member through the lateral hole of the column-beam joint on the opposite side of the one beam member. The tip portion is placed in the mechanical filling joint,
Next, the other beam member is installed so that the beam main bar protruding from the column-beam joint on the opposite side of the one beam member is inserted into the insertion hole of the other beam member. The tip portion of the beam main bar protruding from the column-beam joint is arranged in the mechanical filling joint of the other beam member.
Next, the filling material is filled in the mechanical filling joint, the beam main bar and the beam main bar on the beam member side are joined in the mechanical filling joint, and the beam main bar and the lateral hole and the said A filler is filled in the gap between the inside of the insertion hole, and the beam main bar is fixed in the side hole and the insertion hole.
After joining the beam main bars, the vertical groove is filled with a filler to secure an adhesive force at the joint surface.

この柱梁接合構造の構築工法によれば、梁部材と柱梁接合部のプレキャスト工程において、柱梁接合部に梁主筋が貫通する横孔を形成し、梁部材に梁部材端部から所定距離の位置に機械式充填継ぎ手を埋め込み、梁部材端部から機械式充填継ぎ手まで挿入孔を形成しておき、次に、梁部材と柱梁接合部との接合工程において、一方の梁部材を柱梁接合部に据え付け、梁主筋を一方の梁部材と反対側の柱梁接合部の横孔から一方の梁部材の挿入孔に挿入し、その先端部分を機械式充填継ぎ手内に配置し、柱梁接合部から突き出た状態の梁主筋を他方の梁部材の挿入孔に挿入するようにして他方の梁部材を据え付け、その先端部分を機械式充填継ぎ手内に配置し、次に、機械式充填継ぎ手内に充填材を充填して機械式充填継ぎ手内で梁主筋と梁部材側の梁主筋とを接合し、梁主筋と横孔内および挿入孔内との間の隙間に充填材を充填して梁主筋を横孔内および挿入孔内に定着させることができる。また、２つの梁部材と柱梁接合部との各接合面に予め複数の縦溝を形成し、梁主筋の接合後に縦溝に充填材を充填して接合面で付着力を確保することにより、接合面の外周における開きなどの発生を防止できる。このようにして、プレキャストによる梁部材同士を２または４方向からプレキャストによる柱梁接合部に確実に接合することができる。 According to the construction method of this beam-column joint structure, in the precast process of the beam member and the beam-column joint, a lateral hole through which the beam main bar penetrates is formed in the beam-column joint, and the beam member is at a predetermined distance from the end of the beam member. A mechanical filling joint is embedded at the position of, and an insertion hole is formed from the end of the beam member to the mechanical filling joint. Installed at the beam joint, the beam main bar is inserted into the insertion hole of one beam member from the lateral hole of the beam-beam joint on the opposite side of one beam member, and the tip portion is placed in the mechanical filling joint to form the column. The other beam member is installed so that the beam main bar protruding from the beam joint is inserted into the insertion hole of the other beam member, and the tip portion thereof is placed in the mechanical filling joint, and then the mechanical filling is performed. Filling the joint with a filler and mechanically filling The beam main bar and the beam main bar on the beam member side are joined in the joint, and the gap between the beam main bar and the inside of the lateral hole and the inside of the insertion hole is filled with the filler. The beam main bar can be fixed in the lateral hole and the insertion hole. Further, by forming a plurality of vertical grooves in advance on each joint surface between the two beam members and the column-beam joint portion, and filling the vertical grooves with a filler after joining the beam main bars, the adhesive force is secured at the joint surface. , It is possible to prevent the occurrence of opening on the outer periphery of the joint surface. In this way, the precast beam members can be reliably joined to the precast beam-column joint from two or four directions.

上記柱梁接合構造の構築工法において、前記梁部材端部から前記機械式充填継ぎ手の水平方向中心位置までの距離は、前記梁部材の梁せい以上であることが好ましい。 In the method for constructing a beam-column joint structure, the distance from the end of the beam member to the center position in the horizontal direction of the mechanical filling joint is preferably greater than or equal to the beam length of the beam member.

また、前記柱梁接合部または前記２つの梁部材の少なくとも一方に前記充填材の注入管を前記横孔または前記挿入孔に連通するように予め埋め込んでおき、前記充填材を前記注入管から前記機械式充填継ぎ手、前記横孔および前記挿入孔内に充填することが好ましい。 Further, an injection pipe of the filler is preliminarily embedded in the column-beam joint or at least one of the two beam members so as to communicate with the lateral hole or the insertion hole, and the filler is poured from the injection pipe to the injection pipe. It is preferable to fill the mechanical filling joint, the lateral hole and the insertion hole.

また、前記接合面における前記縦溝は、縦方向下端が有底になっていることが好ましい。 Further, it is preferable that the vertical groove on the joint surface has a bottom in the vertical direction.

また、前記横孔および前記挿入孔を、前記柱梁接合部内に予め埋め込まれたシース管および前記梁部材内に予め埋め込まれたシース管により形成することが好ましい。 Further, it is preferable that the lateral hole and the insertion hole are formed by a sheath pipe pre-embedded in the column-beam joint portion and a sheath pipe pre-embedded in the beam member.

上記目的を達成するための柱梁接合構造は、プレキャストによる一方の梁部材と他方の梁部材とがプレキャストによる柱梁接合部に接合された柱梁接合構造であって、
前記柱梁接合部は梁主筋が貫通する横孔を備え、前記２つの梁部材は、梁部材端部から所定距離の位置に埋め込まれた機械式充填継ぎ手と、前記梁部材端部から前記機械式充填継ぎ手まで延びた挿入孔と、を備え、
梁主筋が前記柱梁接合部の横孔と一方の梁部材の挿入孔とを貫通してその先端部分が前記機械式充填継ぎ手内に位置し、前記柱梁接合部から突き出た前記梁主筋が他方の梁部材の前記挿入孔を貫通してその先端部分が前記機械式充填継ぎ手内に位置し、
前記機械式充填継ぎ手内に充填された充填材により前記機械式充填継ぎ手内で前記梁主筋と前記梁部材側の梁主筋とが接合され、前記梁主筋と前記横孔内および前記挿入孔内との間の隙間に充填された充填材により前記梁主筋が前記横孔内および前記挿入孔内に定着させられており、
前記梁部材と前記柱梁接合部との各接合面は予め形成された複数の縦溝を備え、前記梁主筋の接合後に前記縦溝に充填された充填材により前記接合面において付着力が確保されているものである。 The beam-column joint structure for achieving the above object is a beam-column joint structure in which one beam member and the other beam member by precast are joined to the beam-column joint portion by precast.
The beam-column joint is provided with a lateral hole through which the beam main bar penetrates, and the two beam members are a mechanical filling joint embedded at a predetermined distance from the end of the beam member and the machine from the end of the beam member. With an insertion hole extending to the type filling joint,
The beam main bar penetrates the lateral hole of the column-beam joint and the insertion hole of one of the beam members, the tip portion thereof is located in the mechanical filling joint, and the beam main bar protruding from the column-beam joint is formed. Through the insertion hole of the other beam member, the tip portion thereof is located in the mechanical filling joint.
The beam main bar and the beam main bar on the beam member side are joined in the mechanical filling joint by the filler filled in the mechanical filling joint, and the beam main bar, the lateral hole, and the insertion hole are joined. The beam main bar is fixed in the lateral hole and the insertion hole by the filler filled in the gap between the beams.
Each joint surface between the beam member and the column-beam joint portion is provided with a plurality of flutes formed in advance, and an adhesive force is ensured at the joint surface by a filler filled in the flutes after the beam main bar is joined. It is what has been done.

この柱梁接合構造によれば、梁主筋が柱梁接合部の横孔と一方の梁部材の挿入孔を通してその先端部分が一方の梁部材の機械式充填継ぎ手内に位置し、柱梁接合部から突き出た梁主筋が他方の梁部材の挿入孔を通してその先端部分が他方の梁部材の機械式充填継ぎ手内に位置し、機械式充填継ぎ手内に充填された充填材により機械式充填継ぎ手内で梁主筋と梁部材側の梁主筋とが接合され、梁主筋と横孔内および挿入孔内との間の隙間に充填された充填材により梁主筋が横孔内および挿入孔内に定着させることができる。また、梁部材と柱梁接合部との各接合面は予め形成された複数の縦溝に梁主筋の接合後に充填された充填材により接合面において付着力を確保することにより、接合面の外周における開きなどの発生を防止できる。このようにして、プレキャストによる梁部材同士が２または４方向からプレキャストによる柱梁接合部に確実に接合する柱梁接合構造を実現できる。 According to this beam-column joint structure, the beam main bar is located in the mechanical filling joint of one beam member through the lateral hole of the beam-column joint and the insertion hole of one beam member, and the beam-column joint is formed. The beam main bar protruding from the beam is located in the mechanical filling joint of the other beam member through the insertion hole of the other beam member, and the filling material filled in the mechanical filling joint is used in the mechanical filling joint. The beam main bar and the beam main bar on the beam member side are joined, and the beam main bar is fixed in the horizontal hole and the insertion hole by the filler filled in the gap between the beam main bar and the inside of the lateral hole and the insertion hole. Can be done. Further, each joint surface between the beam member and the column-beam joint portion is provided with a filler filled in a plurality of pre-formed vertical grooves after the beam main bar is joined to secure the adhesive force on the joint surface, thereby ensuring the outer circumference of the joint surface. It is possible to prevent the occurrence of opening in. In this way, it is possible to realize a beam-column joint structure in which the beam members by precast are surely joined to the beam-column joint portion by precast from two or four directions.

上記柱梁接合構造において前記梁部材端部から前記機械式充填継ぎ手の水平方向中心位置までの距離は、前記梁部材の梁せい以上であることが好ましい。 In the beam-column joint structure, the distance from the end of the beam member to the center position in the horizontal direction of the mechanical filling joint is preferably greater than or equal to the beam length of the beam member.

本発明によれば、プレキャストによる梁部材同士を２または４方向からプレキャストによる柱梁接合部に確実に接合し定着させることのできる柱梁接合構造の構築工法および柱梁接合構造を提供することができる。 According to the present invention, it is possible to provide a method for constructing a beam-column joint structure and a beam-column joint structure capable of reliably joining and fixing precast beam members to a beam-column joint portion by precast from two or four directions. it can.

本実施形態において第１のPCa梁部材と第２のPCa梁部材とをPCa柱梁接合部に接合した柱梁接合構造を示す断面図である。It is sectional drawing which shows the column-beam joint structure which joined the 1st PCa beam member and the 2nd PCa beam member to the PCa column-beam joint part in this embodiment. 図１の第１のPCa梁部材とPCa柱梁接合部との接合面を上面から見た要部上面図（ａ）および第１のPCa梁部材の接合面を示す平面図（ｂ）である。It is the top view (a) of the main part which looked at the joint surface of the 1st PCa beam member and the PCa column beam joint part of FIG. 1 from the upper surface, and the plan view (b) which shows the joint surface of the 1st PCa beam member. .. 本実施形態による柱梁接合構造の構築工法の工程Ｓ０１〜Ｓ１２を説明するためのフローチャートである。It is a flowchart for demonstrating the steps S01-S12 of the construction method of the beam-column joint structure by this embodiment. 本実施形態による柱梁接合構造の構築工法の各工程における各部の断面図（ａ）〜（ｃ）である。It is sectional drawing (a)-(c) of each part in each step of the construction method of the beam-column joint structure by this embodiment. 図４（ｃ）から続く各工程における各部の断面図（ａ）〜（ｃ）である。It is sectional drawing (a)-(c) of each part in each step which continues from FIG. 4C. 従来のLRV工法の主な工程（ａ）〜（ｃ）を示す図である。It is a figure which shows the main steps (a)-(c) of the conventional LRV construction method. 従来のスクライム-Ｈ工法の主な工程（ａ）〜（ｄ）を示す図であIt is a figure which shows the main steps (a)-(d) of the conventional sclime-H method.

以下、本発明を実施するための形態について図面を用いて説明する。図１は本実施形態において第１のPCa梁部材と第２のPCa梁部材とをPCa柱梁接合部に接合した柱梁接合構造を示す断面図である。図２は図１の第１のPCa梁部材とPCa柱梁接合部との接合面を上面から見た要部上面図（ａ）および第１のPCa梁部材の接合面を示す平面図（ｂ）である。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a column-beam joint structure in which a first PCa beam member and a second PCa beam member are joined to a PCa column-beam joint portion in the present embodiment. FIG. 2 is a top view (a) of a main part of the joint surface between the first PCa beam member and the PCa column-beam joint portion of FIG. 1 as viewed from above, and a plan view (b) showing the joint surface of the first PCa beam member. ).

図１のように、本実施形態による柱梁接合構造１０は、鉄筋コンクリート構造であって、PCa柱梁接合部１１に貫通させた鉄筋からなる梁主筋１４を第１のPCa梁部材１２，第２のPCa梁部材１３内の機械式充填継ぎ手１５，１６により接合することで、第１のPCa梁部材１２，第２のPCa梁部材１３をPCa柱梁接合部１１に接合したものである。 As shown in FIG. 1, the beam-column joint structure 10 according to the present embodiment is a reinforced concrete structure, and the beam main bar 14 made of a reinforcing bar penetrating the PCa column-beam joint portion 11 is inserted into the first PCa beam member 12 and the second. The first PCa beam member 12 and the second PCa beam member 13 are joined to the PCa column-beam joint portion 11 by joining with the mechanical filling joints 15 and 16 in the PCa beam member 13.

PCa柱梁接合部１１には、複数の柱主筋１１ｄと、柱主筋１１ｄに直交して接続する複数の柱内せん断補強筋１１ｅとが配置され、また、図１の破線で示すように、梁主筋１４が挿入される鋼管からなる複数のシース管１７が梁主筋１４の位置に対応して配置されている。各シース管１７が水平方向に貫通した横孔を構成する。 A plurality of column main bars 11d and a plurality of intra-column shear reinforcing bars 11e connected orthogonally to the column main bars 11d are arranged at the PCa column-beam joint portion 11, and as shown by the broken line in FIG. 1, the beam A plurality of sheath pipes 17 made of steel pipes into which the main bars 14 are inserted are arranged corresponding to the positions of the beam main bars 14. Each sheath tube 17 constitutes a horizontal hole penetrating in the horizontal direction.

第１，第２のPCa梁部材１２，１３には、それぞれ、複数の梁主筋１２ａ，１３ａと、梁主筋１２ａ、１３ａに直交して接続する複数のせん断補強筋１２ｂ，１３ｂとが配置されている。複数の梁主筋１２ａ，１３ａは、２本ずつ上下二段に配置されている。 A plurality of beam main bars 12a and 13a and a plurality of shear reinforcing bars 12b and 13b connected orthogonally to the beam main bars 12a and 13a are arranged on the first and second PCa beam members 12 and 13, respectively. There is. The plurality of beam main bars 12a and 13a are arranged in two upper and lower stages, two each.

また、第１，第２のPCa梁部材１２，１３には、プレキャストのとき、それぞれ、梁部材端部から水平方向の所定距離に機械式充填継ぎ手１５，１６が配置され、図１の破線で示すように機械式充填継ぎ手１５，１６から梁部材端部まで鋼管からなるシース管１８，１９が配置され、機械式充填継ぎ手１５、１６とシース管１８，１９とが鉄筋からなる梁主筋１２ａ，１３ａおよびせん断補強筋１２ｂ，１３ｂとともに埋め込まれている。機械式充填継ぎ手１５，１６の一方側には梁主筋１２ａ，１３ａが挿入されグラウド材等の充填材により定着されている。PCa梁部材１２，１３にはシース管１８，１９により梁主筋１４が挿入される挿入孔が形成される。機械式充填継ぎ手１５，１６およびシース管１８，１９は、梁主筋１２ａ、１３ａの数に対応して複数設置される。 Further, at the time of precasting, the mechanical filling joints 15 and 16 are arranged at predetermined distances in the horizontal direction from the end of the beam member on the first and second PCa beam members 12 and 13, respectively, and the broken lines in FIG. As shown, sheath pipes 18 and 19 made of steel pipes are arranged from the mechanical filling joints 15 and 16 to the ends of the beam members, and the beam main bars 12a in which the mechanical filling joints 15 and 16 and the sheath pipes 18 and 19 are made of reinforcing bars. It is embedded together with 13a and shear reinforcements 12b, 13b. Beam main bars 12a and 13a are inserted into one side of the mechanical filling joints 15 and 16 and are fixed by a filling material such as a ground material. Insertion holes into which the beam main bar 14 is inserted are formed in the PCa beam members 12 and 13 by the sheath pipes 18 and 19. A plurality of mechanical filling joints 15 and 16 and sheath pipes 18 and 19 are installed according to the number of beam main bars 12a and 13a.

シース管１７，１８，１９は、その内径が梁主筋１４の径よりも大きくなっており、また、その内周面にらせん状の溝が形成されている。シース管１７〜１９の内周面と、シース管１７〜１９に挿入された梁主筋１４との間の隙間に充填されたグラウト材等の充填材により梁主筋定着部が形成され確実な定着力が得られる。 The inner diameters of the sheath pipes 17, 18 and 19 are larger than the diameter of the beam main bar 14, and a spiral groove is formed on the inner peripheral surface thereof. A beam main bar fixing portion is formed by a filler such as a grout material filled in the gap between the inner peripheral surface of the sheath pipes 17 to 19 and the beam main bar 14 inserted into the sheath pipes 17 to 19, and a reliable fixing force is obtained. Is obtained.

PCa柱梁接合部１１には、その上面１１ａから複数の注入管２０が複数のシース管１７まで延びるようにして予め埋め込まれている。グラウト材等の充填材が上面１１ａに形成された注入口から各注入管２０を通して注入され梁主筋１４とシース管１７，１８，１９との隙間を通して機械式充填継ぎ手１５，１６内に充填され、さらに各隙間に充填される。かかる充填材の充填により梁主筋１４が機械式充填継ぎ手１５，１６内で梁主筋１２ａ、１３ａと接合する。また、PCa柱梁接合部１１内のシース管１７内の隙間および各PCa梁部材１２，１３のシース管１８，１９内の隙間に充填材が充填されて梁主筋定着部が形成されて梁主筋１４が定着する。 A plurality of injection pipes 20 are preliminarily embedded in the PCa column-beam joint portion 11 so as to extend from the upper surface 11a to the plurality of sheath pipes 17. A filler such as a grout material is injected through each injection pipe 20 from an injection port formed on the upper surface 11a, and is filled into the mechanical filling joints 15 and 16 through the gap between the beam main bar 14 and the sheath pipes 17, 18 and 19. Furthermore, each gap is filled. By filling the filler, the beam main bar 14 is joined to the beam main bars 12a and 13a in the mechanical filling joints 15 and 16. Further, the gap in the sheath pipe 17 in the PCa column-beam joint portion 11 and the gap in the sheath pipes 18 and 19 of the PCa beam members 12 and 13 are filled with the filler to form the beam main bar fixing portion, and the beam main bar is formed. 14 is fixed.

また、図１に示す機械式充填継ぎ手１５、１６のカプラ長Ｌｃ、機械式充填継ぎ手１５、１６内の梁主筋１４の挿入長さＬｉおよび梁部材端部から機械式充填継ぎ手１５，１６の中央部までの梁主筋１４の定着長Ｌについては、使用する機械式充填継ぎ手の仕様により決定されるが、梁主筋１４の定着長Ｌは、少なくともPCa梁部材１２，１３の高さ（梁せい）Ｈとする（Ｌ≧Ｈ）。梁主筋１４の定着長Ｌを少なくとも梁せいＨとすることで、PCa梁部材１２，１３において降伏ヒンジ長よりも長い定着長Ｌを確保することができ、梁主筋１４をPCa梁部材１２，１３に確実に定着させることができる。なお、定着長Ｌの上限は経済合理性で判断することが好ましい。 Further, the coupler length Lc of the mechanical filling joints 15 and 16 shown in FIG. 1, the insertion length Li of the beam main bar 14 in the mechanical filling joints 15 and 16, and the center of the mechanical filling joints 15 and 16 from the beam member end. The fixing length L of the beam main bar 14 up to the portion is determined by the specifications of the mechanical filling joint used, but the fixing length L of the beam main bar 14 is at least the height of the PCa beam members 12 and 13 (beam cause). Let H be (L ≧ H). By setting the anchoring length L of the beam main bar 14 to at least the beam beam H, it is possible to secure a anchoring length L longer than the yield hinge length in the PCa beam members 12 and 13, and the beam main bar 14 is used as the PCa beam members 12 and 13. Can be firmly fixed. The upper limit of the fixing length L is preferably determined by economic rationality.

図２（ａ）（ｂ）のように、PCa柱梁接合部１１と第１，第２のPCa梁部材１２，１３とが接合したとき、それらの界面である接合面に複数の空洞からなる注入孔２１が形成されるように、PCa柱梁接合部１１、第１，第２のPCa梁部材１２，１３の各接合面、たとえば第１のPCa梁部材１２の接合面１２ｃに複数の縦溝２１ａがプレキャスト部材製造のときに形成されている。PCa柱梁接合部１１の接合面（図示省略）にも同様の複数の縦溝が形成されている。また、各注入孔２１は、縦方向下側に貫通せず、縦方向下端に底部２１ｂを有する。 As shown in FIGS. 2 (a) and 2 (b), when the PCa column-beam joint portion 11 and the first and second PCa beam members 12 and 13 are joined, a plurality of cavities are formed in the joint surface which is the interface between them. A plurality of vertical portions are formed on the joint surfaces of the PCa column-beam joint portion 11 and the first and second PCa beam members 12 and 13, for example, the joint surface 12c of the first PCa beam member 12 so that the injection hole 21 is formed. The groove 21a is formed at the time of manufacturing the precast member. Similar vertical grooves are also formed on the joint surface (not shown) of the PCa column-beam joint portion 11. Further, each injection hole 21 does not penetrate downward in the vertical direction and has a bottom portion 21b at the lower end in the vertical direction.

PCa柱梁接合部１１と第１，第２のPCa梁部材１２，１３との接合後に縦溝２１ａ等からなる複数の注入孔２１にグラウド材等の充填材を注入し充填して接合面において付着力を確保する。なお、図２（ａ）のように上面から見た注入孔２１の形状は円形であるが、たとえば、長円や四角形であってもよい。 After joining the PCa column-beam joint portion 11 and the first and second PCa beam members 12 and 13, a filler such as a ground material is injected into a plurality of injection holes 21 composed of vertical grooves 21a and the like to fill the joint surface. Secure adhesion. The shape of the injection hole 21 as seen from the upper surface as shown in FIG. 2A is circular, but it may be, for example, an oval or a quadrangle.

次に、本実施形態による柱梁接合構造の構築工法の工程Ｓ０１〜Ｓ１２について図１〜図５を参照して説明する。図３は、本実施形態による柱梁接合構造の構築工法の工程Ｓ０１〜Ｓ１２を説明するためのフローチャートである。図４は、本実施形態による柱梁接合構造の構築工法の各工程における各部の断面図（ａ）〜（ｃ）である。図５は、図４（ｃ）から続く各工程における各部の断面図（ａ）〜（ｃ）である。 Next, steps S01 to S12 of the beam-column joint structure construction method according to the present embodiment will be described with reference to FIGS. 1 to 5. FIG. 3 is a flowchart for explaining steps S01 to S12 of the beam-column joint structure construction method according to the present embodiment. FIG. 4 is a cross-sectional view (a) to (c) of each part in each step of the beam-column joint structure construction method according to the present embodiment. 5 is a cross-sectional view (a) to (c) of each part in each step following from FIG. 4 (c).

まず、図４（ａ）のPCa柱梁接合部１１に図４（ｂ）のように第１のPCa梁部材１２を据え付け（Ｓ０１）、第１のPCa梁部材１２を支える支保材を取り付け、その位置を調整する（Ｓ０２）。 First, the first PCa beam member 12 is installed (S01) on the PCa column-beam joint portion 11 of FIG. 4 (a) as shown in FIG. 4 (b), and the support material for supporting the first PCa beam member 12 is attached. The position is adjusted (S02).

次に、図４（ｃ）のように第１のPCa梁部材１２の反対側のPCa柱梁接合部１１の側面に開口した各シース管１７にそれぞれ所定長さの梁主筋１４を挿入し（Ｓ０３）、その梁主筋１４の位置を調整する（Ｓ０４）。 Next, as shown in FIG. 4C, a beam main bar 14 having a predetermined length is inserted into each sheath pipe 17 opened on the side surface of the PCa column-beam joint 11 on the opposite side of the first PCa beam member 12 ( S03), the position of the beam main bar 14 is adjusted (S04).

次に、図５（ａ）のように梁主筋１４が第１のPCa梁部材１２内でその一端１４ａが機械式充填継ぎ手１５内に位置するとともに梁主筋１４がPCa柱梁接合部１１の反対側から定着長Ｌ（図１）だけ突き出た状態で、図５（ｂ）のように第２のPCa梁部材１３を、突き出た梁主筋１４を呑み込むようにしてPCa柱梁接合部１１に据え付け（Ｓ０５）、第２のPCa梁部材１３を支える支保材を取り付け、その位置を調整する（Ｓ０６）。 Next, as shown in FIG. 5A, the beam main bar 14 is located in the first PCa beam member 12, one end 14a thereof is located in the mechanical filling joint 15, and the beam main bar 14 is opposite to the PCa column beam joint 11. With the anchorage length L (FIG. 1) protruding from the side, the second PCa beam member 13 is installed on the PCa column-beam joint 11 so as to swallow the protruding beam main bar 14 as shown in FIG. 5 (b). (S05), a support material for supporting the second PCa beam member 13 is attached, and the position thereof is adjusted (S06).

次に、図５（ｃ）のように梁主筋１４が第１のPCa梁部材１２内でその一端１４ａが機械式充填継ぎ手１５内に位置しかつ第２のPCa梁部材１３内でその他端１４ｂが機械式充填継ぎ手１６内に位置する状態で、グラウト材等の充填材を、PCa柱梁接合部１１の上面１１ａの注入口から各注入管２０を通し、さらにシース管１７，１８，１９と梁主筋１４との間の隙間を通して、機械式充填継ぎ手１５，１６内の梁主筋の一端１４ａ，他端１４ｂとの間の隙間に注入し充填する（Ｓ０７）。次に、機械式充填継ぎ手１５，１６内の充填材の硬化状態を確認する（Ｓ０８）。 Next, as shown in FIG. 5C, the beam main bar 14 is located in the first PCa beam member 12, one end 14a thereof is located in the mechanical filling joint 15, and the other end 14b in the second PCa beam member 13. Is located in the mechanical filling joint 16, and a filling material such as a grout material is passed through each injection pipe 20 from the injection port of the upper surface 11a of the PCa beam-beam joint portion 11, and further, sheath pipes 17, 18 and 19 and Through the gap between the beam main bar 14 and the mechanical filling joints 15 and 16, the gap between one end 14a and the other end 14b of the beam main bar is injected and filled (S07). Next, the cured state of the filler in the mechanical filling joints 15 and 16 is confirmed (S08).

次に、グラウト材等の充填材を、PCa柱梁接合部１１内の各注入管２０を通してさらに注入し、PCa柱梁接合部１１内のシース管１７，第１のPCa梁部材１２内のシース管１８および第２のPCa梁部材１３内のシース管１９と梁主筋１４との間の各隙間にグラウト材等の充填材を充填する（Ｓ０９）。このグラウト材等の充填材が充填された隙間が梁主筋定着部となる。次に、梁主筋定着部内のグラウト材等の充填材の硬化状態を確認する（Ｓ１０）。 Next, a filler such as a grout material is further injected through each injection pipe 20 in the PCa beam-column joint 11, and the sheath pipe 17 in the PCa beam-column joint 11 and the sheath in the first PCa beam member 12 are further injected. Each gap between the sheath pipe 19 and the beam main bar 14 in the pipe 18 and the second PCa beam member 13 is filled with a filler such as a grout material (S09). The gap filled with the filler such as the grout material serves as the beam main bar fixing portion. Next, the cured state of the filler such as the grout material in the beam main bar fixing portion is confirmed (S10).

上述のようにして、図１のように、梁主筋１４を第１のPCa梁部材１２内の機械式充填継ぎ手１５で第１のPCa梁部材１２の梁主筋１２ａと接合させかつ第２のPCa梁部材１３内の機械式充填継ぎ手１６で第２のPCa梁部材１３の梁主筋１３ａと接合させることができ、さらに、梁主筋１４をPCa柱梁接合部１１内のシース管１７（横孔）内，第１のPCa梁部材１２内のシース管１８（挿入孔）内および第２のPCa梁部材１３内のシース管１９（挿入孔）内に定着させることができる。このようにして、第１，第２のPCa梁部材１２，１３がPCa柱梁接合部１１に接合される。 As described above, as shown in FIG. 1, the beam main bar 14 is joined to the beam main bar 12a of the first PCa beam member 12 by the mechanical filling joint 15 in the first PCa beam member 12, and the second PCa The mechanical filling joint 16 in the beam member 13 can be joined to the beam main bar 13a of the second PCa beam member 13, and the beam main bar 14 is further joined to the sheath pipe 17 (horizontal hole) in the PCa column beam joint portion 11. Among them, it can be fixed in the sheath pipe 18 (insertion hole) in the first PCa beam member 12 and in the sheath pipe 19 (insertion hole) in the second PCa beam member 13. In this way, the first and second PCa beam members 12 and 13 are joined to the PCa column-beam joint portion 11.

次に、図２（ａ）（ｂ）のように、PCa柱梁接合部１１と第１，第２のPCa梁部材１２，１３との接合面に形成された複数の注入孔２１に上方からグラウド材等の充填材を注入し充填する（Ｓ１１）。かかるグラウト材等の充填材の充填で得られる付着力により接合面（界面）の開きやずれなどの挙動を制約することができる。PCa柱梁接合部１１と第１，第２のPCa梁部材１２，１３との梁主筋１４による接合に加えて、接合面における付着力を確保することで、接合面の外周における開きなどの不具合の発生を未然に防止できる。なお、各注入孔２１は底部２１ｂを有し、注入孔２１内は充填材が満たされるようになっている。 Next, as shown in FIGS. 2A and 2B, a plurality of injection holes 21 formed on the joint surface between the PCa column-beam joint portion 11 and the first and second PCa beam members 12 and 13 are inserted from above. A filler such as a glaude material is injected and filled (S11). The behavior such as opening and shifting of the joint surface (interface) can be restricted by the adhesive force obtained by filling the filler such as grout material. In addition to joining the PCa column-beam joint portion 11 and the first and second PCa beam members 12 and 13 by the beam main bar 14, problems such as opening on the outer circumference of the joint surface are ensured by ensuring the adhesive force on the joint surface. Can be prevented from occurring. Each injection hole 21 has a bottom portion 21b, and the inside of the injection hole 21 is filled with a filler.

次に、次のPCa柱梁接合部まで移動し（Ｓ１２）、同様の工程を繰り返す。 Next, the process is moved to the next PCa column-beam joint (S12), and the same process is repeated.

以上のように、本実施形態の柱梁接合構造の構築工法によれば、プレキャストによる梁同士を２または４方向からプレキャストによる柱梁接合部に確実に接合でき定着させることができる。 As described above, according to the construction method of the beam-column joint structure of the present embodiment, the beams by precast can be reliably joined to and fixed to the beam-column joint by precast from two or four directions.

なお、本工法については、PCa柱梁接合部１１、第１，第２のPCa梁部材１２，１３の各部材の寸法、配筋、コンクリート強度を同一とした構造性能確認試験により所要の構造性能を検証した上で、実用に供する。また、PCa柱梁接合部１１内の横補強筋（せん断補強筋）比は、0.2％以上とするが、これも構造性能確認実験で検証した上で適用する。 Regarding this method, the required structural performance is obtained by a structural performance confirmation test in which the dimensions, reinforcement arrangement, and concrete strength of each member of the PCa column-beam joint 11 and the first and second PCa beam members 12 and 13 are the same. After verifying, put it into practical use. In addition, the ratio of lateral reinforcing bars (shear reinforcing bars) in the PCa column-beam joint 11 is 0.2% or more, but this is also applied after being verified by a structural performance confirmation experiment.

以上のように本発明を実施するための形態について説明したが、本発明はこれらに限定されるものではなく、本発明の技術的思想の範囲内で各種の変形が可能である。たとえば、本実施形態では、グラウト材等の充填材の注入のための注入管を柱梁接合部に設けたが、本発明はこれに限定されず、梁側に設けてもよい。 Although the embodiments for carrying out the present invention have been described above, the present invention is not limited to these, and various modifications can be made within the scope of the technical idea of the present invention. For example, in the present embodiment, an injection pipe for injecting a filler such as a grout material is provided at the column-beam joint, but the present invention is not limited to this, and an injection pipe may be provided on the beam side.

また、PCa梁部材１２，１３にも別に注入管を予め設けてグラウト材等の充填材を注入してもよく、先にPCa梁部材１２，１３に設けた注入管から梁主筋１４と機械式充填継ぎ手１５、１６との間の隙間に充填材を充填し硬化を確認してから、次に、PCa柱梁接合部１１の注入管２０から梁主筋１４とシース管１７、１８および１９との間の隙間にグラウト材等の充填材を充填するようにしてもよい。つまり、PCa柱梁接合部１１の注入管２０に加えてPCa梁部材１２，１３に別の注入管を設けることで、機械式充填継ぎ手内での充填と、シース管内の隙間への充填との順番は、必要に応じて変更できる。いずれの場合でも、梁主筋１４がグラウト材等の充填材の硬化により接合し定着し、第１，第２のPCa梁部材１２，１３がPCa柱梁接合部１１に接合される。 Further, an injection pipe may be separately provided in the PCa beam members 12 and 13 in advance to inject a filler such as a grout material, and the beam main bar 14 and the beam main bar 14 may be mechanically injected from the injection pipe previously provided in the PCa beam members 12 and 13. After filling the gap between the filling joints 15 and 16 with the filler and confirming the hardening, the beam main bar 14 and the sheath pipes 17, 18 and 19 are then connected from the injection pipe 20 of the PCa column-beam joint 11. A filler such as a grout material may be filled in the gap between them. That is, by providing another injection pipe in the PCa beam members 12 and 13 in addition to the injection pipe 20 of the PCa column-beam joint portion 11, filling in the mechanical filling joint and filling in the gap in the sheath pipe can be performed. The order can be changed as needed. In either case, the beam main bar 14 is joined and fixed by hardening the filler such as grout material, and the first and second PCa beam members 12 and 13 are joined to the PCa column beam joint portion 11.

また、図１，図４，図５では、PCa梁部材を２方向からPCa柱梁接合部で接合し定着させる例を説明したが、PCa梁部材を４方向からPCa柱梁接合部で接合し定着させることも可能である。 Further, in FIGS. 1, 4 and 5, an example of joining and fixing the PCa beam members at the PCa column-beam joints from two directions has been described, but the PCa beam members are joined at the PCa column-beam joints from four directions. It is also possible to fix it.

本発明の柱梁接合構造の構築工法および柱梁接合構造によれば、PCa梁部材同士を２または４方向からPCa柱梁接合部に確実に接合でき定着させることができるので、建物の柱梁接合構造を工場生産可能なプレキャスト部材として構築することで、建物構築の際の現場施工部分が低減され、現場での施工労力が削減され、工期も大幅に短縮できるため、生産性向上に大きく寄与できる。 According to the construction method of the column-beam joint structure and the column-beam joint structure of the present invention, the PCa beam members can be reliably joined to and fixed to the PCa column-beam joint portion from two or four directions, so that the columns and beams of the building can be fixed. By constructing the joint structure as a precast member that can be produced at the factory, the on-site construction part at the time of building construction is reduced, the on-site construction labor is reduced, and the construction period can be significantly shortened, which greatly contributes to the improvement of productivity. it can.

１０ 柱梁接合構造
１１ PCa柱梁接合部
１１ａ 上面
１２ 第１のPCa梁部材
１２ａ 梁主筋
１２ｃ 接合面
１３ 第２のPCa梁部材
１３ａ 梁主筋
１４ 梁主筋
１４ａ 一端
１４ｂ 他端
１５，１６ 機械式充填継ぎ手
１７ シース管（横孔）
１８，１９ シース管（挿入孔）
２０ 注入管
２１ 注入孔
２１ａ 縦溝
２１ｂ 底部
Ｌ 定着長
Ｈ 梁せい 10 Beam-column joint structure 11 PCa Column-beam joint 11a Top surface 12 First PCa beam member 12a Beam main bar 12c Joint surface 13 Second PCa beam member 13a Beam main bar 14 Beam main bar 14a One end 14b Other end 15, 16 Mechanical filling Joint 17 Sheath tube (horizontal hole)
18, 19 Sheath tube (insertion hole)
20 Injection pipe 21 Injection hole 21a Vertical groove 21b Bottom L Fixation length H Beam beam

Claims (7)

プレキャストによる一方の梁部材と他方の梁部材とをプレキャストによる柱梁接合部に接合することで柱梁接合構造を構築する工法であって、
前記柱梁接合部において梁主筋が貫通するような横孔および前記梁部材と接合する接合面に複数の縦溝を形成しておき、
前記２つの梁部材において梁部材端部から所定距離の位置に機械式充填継ぎ手を予め埋め込むとともに前記梁部材端部から前記機械式充填継ぎ手まで延びる挿入孔および前記柱梁接合部と接合する接合面に複数の縦溝を形成しておき、
前記一方の梁部材を前記柱梁接合部に据え付ける際に、梁主筋を前記一方の梁部材と反対側の前記柱梁接合部の横孔を通して前記一方の梁部材の挿入孔に挿入し、その先端部分を前記機械式充填継ぎ手内に配置し、
次に、前記一方の梁部材と反対側の前記柱梁接合部から突き出た状態の前記梁主筋が前記他方の梁部材の前記挿入孔に挿入されるようにして前記他方の梁部材を据え付け、前記柱梁接合部から突き出た状態の前記梁主筋の先端部分を前記他方の梁部材の前記機械式充填継ぎ手内に配置し、
次に、前記機械式充填継ぎ手内に充填材を充填し、前記機械式充填継ぎ手内で前記梁主筋と前記梁部材側の梁主筋とを接合するとともに、前記梁主筋と前記横孔内および前記挿入孔内との間の隙間に充填材を充填し、前記梁主筋を前記横孔内および前記挿入孔内に定着させ、
前記梁主筋の接合後に前記縦溝に充填材を充填して前記接合面において付着力を確保する柱梁接合構造の構築工法。 It is a construction method to construct a beam-column joint structure by joining one beam member and the other beam member by precast to the beam-column joint by precast.
A plurality of vertical grooves are formed in the horizontal hole through which the beam main bar penetrates in the beam-column joint and the joint surface to be joined with the beam member.
In the two beam members, a mechanical filling joint is preliminarily embedded at a position at a predetermined distance from the beam member end, and an insertion hole extending from the beam member end to the mechanical filling joint and a joint surface to be joined to the column-beam joint. Multiple flutes are formed in the
When installing the one beam member in the column-beam joint, the beam main bar is inserted into the insertion hole of the one beam member through the lateral hole of the column-beam joint on the opposite side of the one beam member. The tip portion is placed in the mechanical filling joint,
Next, the other beam member is installed so that the beam main bar protruding from the column-beam joint on the opposite side of the one beam member is inserted into the insertion hole of the other beam member. The tip portion of the beam main bar protruding from the column-beam joint is arranged in the mechanical filling joint of the other beam member.
Next, the filling material is filled in the mechanical filling joint, the beam main bar and the beam main bar on the beam member side are joined in the mechanical filling joint, and the beam main bar and the lateral hole and the said A filler is filled in the gap between the inside of the insertion hole, and the beam main bar is fixed in the side hole and the insertion hole.
A method for constructing a beam-column joint structure in which a filler is filled in a vertical groove after joining the beam main bars to secure an adhesive force on the joint surface. 前記梁部材端部から前記機械式充填継ぎ手の水平方向中心位置までの距離は、前記梁部材の梁せい以上である請求項１に記載の柱梁接合構造の構築工法。 The method for constructing a column-beam joint structure according to claim 1, wherein the distance from the end of the beam member to the center position in the horizontal direction of the mechanical filling joint is equal to or greater than the beam length of the beam member. 前記柱梁接合部または前記２つの梁部材の少なくとも一方に前記充填材の注入管を前記横孔または前記挿入孔に連通するように予め埋め込んでおき、前記充填材を前記注入管から前記機械式充填継ぎ手、前記横孔および前記挿入孔内に充填する請求項１または２に記載の柱梁接合構造の構築工法。 An injection pipe of the filler is pre-embedded in the column-beam joint or at least one of the two beam members so as to communicate with the lateral hole or the insertion hole, and the filler is mechanically formed from the injection pipe. The method for constructing a beam-column joint structure according to claim 1 or 2, wherein the filling joint, the lateral hole and the insertion hole are filled. 前記接合面における前記縦溝は、縦方向下端が有底になっている請求項１乃至３のいずれかに記載の柱梁接合構造の構築工法。 The method for constructing a beam-column joint structure according to any one of claims 1 to 3, wherein the vertical groove on the joint surface has a bottom in the vertical direction. 前記横孔および前記挿入孔を、前記柱梁接合部内に予め埋め込まれたシース管および前記梁部材内に予め埋め込まれたシース管により形成する請求項１乃至４のいずれかに記載の柱梁接合構造の構築工法。 The column-beam joint according to any one of claims 1 to 4, wherein the lateral hole and the insertion hole are formed by a sheath pipe pre-embedded in the beam-column joint portion and a sheath pipe pre-embedded in the beam member. Structure construction method. プレキャストによる一方の梁部材と他方の梁部材とがプレキャストによる柱梁接合部に接合された柱梁接合構造であって、
前記柱梁接合部は梁主筋が貫通する横孔を備え、
前記２つの梁部材は、梁部材端部から所定距離の位置に埋め込まれた機械式充填継ぎ手と、前記梁部材端部から前記機械式充填継ぎ手まで延びた挿入孔と、を備え、
梁主筋が前記柱梁接合部の横孔と一方の梁部材の挿入孔とを貫通してその先端部分が前記機械式充填継ぎ手内に位置し、前記柱梁接合部から突き出た前記梁主筋が他方の梁部材の前記挿入孔を貫通してその先端部分が前記機械式充填継ぎ手内に位置し、
前記機械式充填継ぎ手内に充填された充填材により前記機械式充填継ぎ手内で前記梁主筋と前記梁部材側の梁主筋とが接合され、前記梁主筋と前記横孔内および前記挿入孔内との間の隙間に充填された充填材により前記梁主筋が前記横孔内および前記挿入孔内に定着させられており、
前記梁部材と前記柱梁接合部との各接合面は予め形成された複数の縦溝を備え、前記梁主筋の接合後に前記縦溝に充填された充填材により前記接合面において付着力が確保されている柱梁接合構造。 It is a beam-column joint structure in which one beam member and the other beam member by precast are joined to the beam-column joint by precast.
The beam-column joint is provided with a lateral hole through which the beam main bar penetrates.
The two beam members include a mechanical filling joint embedded at a predetermined distance from the beam member end and an insertion hole extending from the beam member end to the mechanical filling joint.
The beam main bar penetrates the lateral hole of the column-beam joint and the insertion hole of one of the beam members, the tip portion thereof is located in the mechanical filling joint, and the beam main bar protruding from the column-beam joint is formed. Through the insertion hole of the other beam member, the tip portion thereof is located in the mechanical filling joint.
The beam main bar and the beam main bar on the beam member side are joined in the mechanical filling joint by the filler filled in the mechanical filling joint, and the beam main bar, the lateral hole, and the insertion hole are joined. The beam main bar is fixed in the lateral hole and the insertion hole by the filler filled in the gap between the beams.
Each joint surface between the beam member and the column-beam joint portion is provided with a plurality of flutes formed in advance, and an adhesive force is ensured at the joint surface by a filler filled in the flutes after the beam main bar is joined. Beam-beam joint structure. 前記梁部材端部から前記機械式充填継ぎ手の水平方向中心位置までの距離は、前記梁部材の梁せい以上である請求項６に記載の柱梁接合構造。 The column-beam joint structure according to claim 6, wherein the distance from the end of the beam member to the center position in the horizontal direction of the mechanical filling joint is equal to or greater than the beam length of the beam member.
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