JP5055028B2 - Precast slab joint structure - Google Patents

Precast slab joint structure Download PDF

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JP5055028B2
JP5055028B2 JP2007149184A JP2007149184A JP5055028B2 JP 5055028 B2 JP5055028 B2 JP 5055028B2 JP 2007149184 A JP2007149184 A JP 2007149184A JP 2007149184 A JP2007149184 A JP 2007149184A JP 5055028 B2 JP5055028 B2 JP 5055028B2
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joining
precast floor
precast
reinforcing
floor slab
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JP2008303538A (en
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光男 斉藤
和真 吉村
克之 出羽
達朗 長澤
直行 杉橋
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Shimizu Corp
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Description

本発明は、橋梁や道路などに設置されるプレキャスト床版の接合構造に関する。   The present invention relates to a joint structure of a precast floor slab installed on a bridge or a road.

従来、橋梁や道路などの床版の施工では、工期短縮、現場の作業効率の向上といった利点があることから、床版を工場などでプレキャスト化したプレキャスト床版を設置する工法が採用されている。プレキャスト床版同士の接合構造には、互いの接合端面から突出させてなる円弧状のループ鉄筋を使用したループ継手がある(例えば、特許文献1及び特許文献2参照)。
従来のループ継手を使用したプレキャスト床版の接合構造は、図6に示すように、プレキャスト床版1の接合端面1aから突出する薄板状の突出底部3が形成され、突出底部3の上部に接合空間Tが形成されている。そして、この突出底部3、3同士を当接させるようにして一方の既設側のプレキャスト床版1Aに他方の組立て側のプレキャスト床版1Bを設置させて、突出底部3を底型枠にして接合空間Tにコンクリートを打設して接合させている。
特開平10−159227号公報 特開2000−328704号公報
Conventionally, the construction of floor slabs such as bridges and roads has the advantage of shortening the construction period and improving the work efficiency of the site. Therefore, a method of installing precast slabs that have been precast at the factory has been adopted. . The joint structure between the precast floor slabs includes a loop joint that uses arc-shaped loop reinforcing bars protruding from the joint end faces (see, for example, Patent Document 1 and Patent Document 2).
As shown in FIG. 6, a precast floor slab joining structure using a conventional loop joint is formed with a thin plate-like projecting bottom 3 projecting from the joining end surface 1 a of the precast floor slab 1, and joined to the top of the projecting bottom 3. A space T is formed. Then, the precast floor slab 1B on the other assembly side is installed on the precast floor slab 1A on the other side so that the projecting bottoms 3 and 3 are brought into contact with each other, and the projecting bottom 3 is joined as a bottom mold. Concrete is placed in the space T and joined.
Japanese Patent Laid-Open No. 10-159227 JP 2000-328704 A

しかしながら、従来のループ継手を有するプレキャスト床版では、突出底部の厚さは、プレキャスト床版の厚さ寸法に対し、埋設されたループ鉄筋のコンクリート被り寸法程度の厚さとなっている。さらに、突出底部は、内部に鉄筋が埋設されていないことから、構造的に弱い部分となっている。このため、組立て側のプレキャスト床版を既設のプレキャスト床版に当接させる際、互いの接合端面同士が斜めに突き合わされて接触したりすると、突出底部に欠けやひび割れが生じて損傷するといった問題があった。   However, in the precast floor slab having the conventional loop joint, the thickness of the protruding bottom portion is about the thickness of the concrete covering of the embedded loop reinforcement with respect to the thickness dimension of the precast floor slab. Furthermore, since the reinforcing bar is not embedded inside, the protruding bottom portion is a structurally weak portion. Therefore, when the precast floor slab on the assembly side is brought into contact with the existing precast floor slab, if the joint end surfaces are abutted against each other and come into contact with each other, the protruding bottom portion may be chipped or cracked and damaged. was there.

本発明は、上述する問題点に鑑みてなされたもので、突出底部を補強することで、プレキャスト床版同士の接合時における接合端面の損傷を防止するようにしたプレキャスト床版の接合構造を提供することを目的とする。   The present invention has been made in view of the above-described problems, and provides a joint structure for a precast floor slab that prevents damage to the joint end faces when joining the precast floor slabs by reinforcing the protruding bottoms. The purpose is to do.

上記目的を達成するため、本発明に係るプレキャスト床版の接合構造は、互いに接合されるプレキャスト床版の接合端面から突出する突出底部と、接合端面から突出底部の上部に形成される接合空間に突出するループ鉄筋と、接合空間に打設される固結材とを設けたプレキャスト床版の接合構造であって、突出底部の下面には、突出底部の厚みを増大させた補強部が設けられ、補強部の接合側端面は、突出底部の端面より接合方向に張り出し、プレキャスト床版の接合時に補強部同士が突出底部の端面同士に当接により先行して当接することを特徴としている。
本発明によれば、プレキャスト床版の厚さ寸法に対して薄い構造をなす突出底部に、厚さを増大させるようにして補強部を設けることで、突出底部の構造を補強することができる。このため、一方のプレキャスト床版に他方のプレキャスト床版を当接させて接合させる際、双方の突出底部における欠けやひび割れの発生を抑制することができる。
また、プレキャスト床版を接合させるときに、先行して補強部の接合側端面同士が当接することになるため、プレキャスト床版の接合端面同士が直接当接することがなくなり、突出底部の損傷を防ぐことができる。
In order to achieve the above object, a precast floor slab joining structure according to the present invention includes a projecting bottom portion projecting from a joining end surface of precast floor slabs to be joined to each other, and a joining space formed from the joining end surface to the upper portion of the projecting bottom portion. This is a precast floor slab joint structure that includes projecting loop rebars and a caulking material that is cast into the joint space. The bottom surface of the projecting bottom part is provided with a reinforcing part that increases the thickness of the projecting bottom part. The joining-side end face of the reinforcing part projects in the joining direction from the end face of the protruding bottom part, and the reinforcing parts are brought into contact with each other in advance by contacting the end faces of the protruding bottom part when the precast floor slab is joined .
According to the present invention, the structure of the protruding bottom portion can be reinforced by providing the reinforcing portion so as to increase the thickness at the protruding bottom portion that forms a thin structure with respect to the thickness dimension of the precast slab. For this reason, when the other precast floor slab is brought into contact with and joined to one precast floor slab, it is possible to suppress the occurrence of chipping or cracking at both projecting bottoms.
In addition, when joining the precast floor slabs, the joining side end surfaces of the reinforcing portions are brought into contact with each other in advance, so that the joining end surfaces of the precast floor slabs are not in direct contact with each other, thereby preventing damage to the protruding bottom portion. be able to.

また、本発明に係るプレキャスト床版の接合構造では、補強部は、弾性を有する部材であることが好ましい。
本発明によれば、プレキャスト床版同士が当接して接合する際、弾性を有する補強部によって当接時の衝撃を低減させることができ、構造的に弱い突出底部が受ける力を抑制することができる。
In the precast slab joining structure according to the present invention, the reinforcing portion is preferably a member having elasticity.
According to the present invention, when the precast slabs are brought into contact with each other and joined, the impact at the time of contact can be reduced by the elastic reinforcing portion, and the force received by the structurally weak protruding bottom can be suppressed. it can.

また、本発明に係るプレキャスト床版の接合構造では、突出底部の端面には、弾性を有する緩衝部材が設けられていることが好ましい。
本発明によれば、接合するプレキャスト床版の突出底部同士が緩衝部材を介して当接することになり、この突出底部が受ける衝撃を低減できる。
Further, in the precast slab joining structure according to the present invention, it is preferable that a shock-absorbing member having elasticity is provided on the end surface of the protruding bottom portion.
According to the present invention, the protruding bottom portions of the precast slabs to be joined come into contact with each other via the buffer member, and the impact received by the protruding bottom portions can be reduced.

本発明のプレキャスト床版の接合構造によれば、プレキャスト床版の接合端面から突出する突出底部に、厚さを増大させるようにして補強部を設けることで、突出底部の構造を強化させることができる。したがって、プレキャスト床版同士を当接させる際の衝撃に対する耐力を向上させることができ、従来のように突出底部の欠けやひび割れなどの損傷を防ぐことができる。
また、補強部の設置領域が突出底部の下面領域のみであって、プレキャスト床版全体の厚みを増大させることがないことから、プレキャスト床版の製作コストの増加を抑える効果を奏する。
According to the joint structure of the precast floor slab of the present invention, it is possible to reinforce the structure of the projecting bottom by providing a reinforcing portion so as to increase the thickness at the projecting bottom protruding from the joint end surface of the precast floor slab. it can. Therefore, it is possible to improve the resistance to impact when the precast floor slabs are brought into contact with each other, and it is possible to prevent damage such as chipping or cracking of the protruding bottom as in the conventional case.
Moreover, since the installation area | region of a reinforcement part is only the lower surface area | region of a protrusion bottom part, and it does not increase the thickness of the whole precast floor slab, there exists an effect which suppresses the increase in the manufacturing cost of a precast floor slab.

以下、本発明の第一の実施の形態によるプレキャスト床版の接合構造について、図1乃至図3に基づいて説明する。
図1は本発明の第一の実施の形態によるプレキャスト床版の設置工程を示す斜視図、図2はプレキャスト床版の接合構造を示す縦断面図、図3はプレキャスト床版の接合部の拡大斜視図である。
図1に示すように、本第一の実施の形態によるプレキャスト床版1は、橋梁、道路、あるいは鉄道の軌条基盤などの床版に使用されるものであり、その床版を予め工場などでプレキャスト化させたものである。
ここで、プレキャスト床版1、1を接合させる方向すなわち設置方向をX方向とし、この設置方向Xに直交したプレキャスト床版1の幅方向をY方向として以下説明する。また、必要に応じて既設側のプレキャスト床版を符号1Aとし、組立て側の床版を符号1Bとして説明する。
Hereinafter, the joint structure of the precast slab according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 is a perspective view showing an installation process of a precast floor slab according to the first embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a joint structure of a precast floor slab, and FIG. 3 is an enlarged view of a joint portion of the precast floor slab. It is a perspective view.
As shown in FIG. 1, a precast floor slab 1 according to the first embodiment is used for a floor slab such as a bridge, a road, or a railroad foundation of a railway. It is precast.
Here, the direction in which the precast floor slabs 1 and 1 are joined, that is, the installation direction is defined as the X direction, and the width direction of the precast floor slab 1 perpendicular to the installation direction X is defined as the Y direction. In addition, the precast floor slab on the existing side is denoted by reference numeral 1A and the floor slab on the assembly side is denoted by reference numeral 1B as necessary.

図1及び図2に示すように、プレキャスト床版1の接合構造は、接合される隣り合うプレキャスト床版1A、1Bの接合端面1a、1aから突出する薄板状の突出底部3を有し、突出底部3の上部が接合空間Tを形成している。
図2に示すように、プレキャスト床版1に埋設される鉄筋4は、設置方向Xに延設される主筋4Aと、この主筋4Aに直交する方向に配設される配筋4Bとからなる。そして、この主筋4Aが接合端面1aより接合空間T側に突出し、プレキャスト床版1の厚み方向に円弧状をなすループ鉄筋2を形成させている。プレキャスト床版1A、1Bの接合状態で、ループ鉄筋2、2は幅方向Y方向にずれて交互に配列され、X方向に互いにオーバーラップしている。
As shown in FIG.1 and FIG.2, the joining structure of the precast floor slab 1 has the thin-plate-like projecting bottom part 3 which protrudes from the joining end surfaces 1a and 1a of the adjacent precast floor slabs 1A and 1B to be joined. The upper part of the bottom 3 forms a joint space T.
As shown in FIG. 2, the reinforcing bar 4 embedded in the precast floor slab 1 includes a main reinforcing bar 4A extending in the installation direction X and a reinforcing bar 4B arranged in a direction orthogonal to the main reinforcing bar 4A. And this main reinforcement 4A protrudes from the joining end surface 1a to the joining space T side, and the loop reinforcement 2 which makes circular arc shape in the thickness direction of the precast floor slab 1 is formed. In the joined state of the precast slabs 1A and 1B, the loop reinforcing bars 2 and 2 are alternately arranged in the width direction Y direction and overlap each other in the X direction.

また、プレキャスト床版1、1同士の接合時には、互いの突出底部3、3の端面3a、3a同士を対向させて配置させることで、略U字状の凹陥部、すなわち接合空間Tが形成されることになる。
さらに、接合空間Tには、ループ鉄筋2、2に直交する方向に適当数の補強配筋4Bを配置させて結束し、コンクリートなどの固結材5を打設する。これにより、相互のプレキャスト床版1A、1Bが接合される。このとき、端面3a、3a同士を当接させた状態の突出底部3、3は、固結材5の底型枠の機能をなしている。
In addition, when joining the precast floor slabs 1, 1, the end surfaces 3 a, 3 a of the projecting bottom portions 3, 3 are arranged to face each other, thereby forming a substantially U-shaped recessed portion, that is, a joining space T. Will be.
Further, in the joining space T, an appropriate number of reinforcing bar arrangements 4B are arranged and bound in a direction orthogonal to the loop reinforcing bars 2 and 2, and a solidified material 5 such as concrete is placed. Thereby, the mutual precast floor slabs 1A and 1B are joined. At this time, the protruding bottom portions 3 and 3 in a state where the end surfaces 3 a and 3 a are in contact with each other function as a bottom mold of the consolidated material 5.

図3に示すように、突出底部3の下面の所定領域には、突出底部3の厚みを増大させる方向に突出させた板状の補強板部材6(補強部)が固着されている。図1に示すように、補強板部材6は、Y方向に連続して設けられている。この補強板部材6は、例えばゴム製など弾性を有した材料からなり、その補強板端面6aは突出底部3の端3aより接合方向に張り出している。
そして、図1に示すプレキャスト床版1は、例えば300mmの厚さ寸法であるとき、突出底部3の厚さ寸法を25mm、補強板部材6の厚さ寸法を15mmとし、突出底部3と補強板部材6と合わせた厚さ寸法を40mmに設計することができる。
このような構造により、プレキャスト床版1A、1Bの接合時に補強板部材6、6同士が、突出底部3の端3a、3a同士の当接より先行して当接することになる。
また、図1に示すように、プレキャスト床版1、1同士を接合させる前に、接合端面1aにも補強板端面6aと同一面となるように緩衝部材7を接着させておくことが好ましい。
As shown in FIG. 3, a plate-like reinforcing plate member 6 (reinforcing portion) that protrudes in a direction that increases the thickness of the protruding bottom portion 3 is fixed to a predetermined region on the lower surface of the protruding bottom portion 3. As shown in FIG. 1, the reinforcing plate member 6 is provided continuously in the Y direction. The reinforcing plate member 6 is made of an elastic material such as rubber, for example, and the reinforcing plate end surface 6 a projects from the end surface 3 a of the projecting bottom portion 3 in the joining direction.
The precast floor slab 1 shown in FIG. 1 has a thickness dimension of, for example, 300 mm, the thickness dimension of the protruding bottom portion 3 is 25 mm, the thickness dimension of the reinforcing plate member 6 is 15 mm, and the protruding bottom portion 3 and the reinforcing plate The thickness dimension combined with the member 6 can be designed to be 40 mm.
With such a structure, the reinforcing plate members 6 and 6 come into contact with each other prior to contact between the end surfaces 3a and 3a of the projecting bottom portion 3 when the precast floor slabs 1A and 1B are joined.
Moreover, as shown in FIG. 1, before joining the precast floor slabs 1 and 1, it is preferable to adhere | attach the buffer member 7 so that it may become the same surface as the reinforcement board end surface 6a also to the joining end surface 1a.

上述したように第一の実施の形態によるプレキャスト床版の接合構造では、プレキャスト床版1の接合端面1aから突出する突出底部3に、厚さを増大させるようにして補強板部材6を設けることで、突出底部3の構造を強化させることができる。したがって、プレキャスト床版1、1同士を当接させる際の衝撃に対する耐力を向上させることができ、従来のように突出底部の欠けやひび割れなどの損傷を防ぐことができる。
また、補強板部材6の設置領域が突出底部3の下面領域のみであって、プレキャスト床版1全体の厚みを増大させることがないことから、プレキャスト床版の製作コストの増加を抑える効果を奏する。
As described above, in the precast floor slab joining structure according to the first embodiment, the reinforcing plate member 6 is provided on the projecting bottom 3 projecting from the joining end surface 1a of the precast floor slab 1 so as to increase the thickness. Thus, the structure of the protruding bottom 3 can be strengthened. Therefore, it is possible to improve the proof strength against impact when the precast floor slabs 1 and 1 are brought into contact with each other, and it is possible to prevent damage such as chipping and cracking of the protruding bottom portion as in the past.
Moreover, since the installation area | region of the reinforcement board member 6 is only the lower surface area | region of the protrusion bottom part 3, and it does not increase the thickness of the precast floor slab 1 whole, there exists an effect which suppresses the increase in the manufacturing cost of a precast floor slab. .

次に、本第一の実施の形態の変形例及び第二の実施の形態について、図4、図5に基づいて説明するが、上述の第一の実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、第一の実施の形態と異なる構成について説明する。
図4は第一の実施の形態の変形例によるプレキャスト床版の接合構造を示す縦断面図である。
図4に示すように、本変形例は、補強板部材6の補強板端面6aの形状を、第一の実施の形態における緩衝部材7(図2参照)の領域にまで連続させた突出部6bを一体に形成したものである。
Next, a modification of the first embodiment and the second embodiment will be described with reference to FIGS. 4 and 5, but the same or similar members and parts as those in the first embodiment described above. The same reference numerals are used to omit the description, and a configuration different from that of the first embodiment will be described.
FIG. 4 is a longitudinal sectional view showing a joint structure of precast floor slabs according to a modification of the first embodiment.
As shown in FIG. 4, in this modification, the protruding portion 6 b in which the shape of the reinforcing plate end surface 6 a of the reinforcing plate member 6 is continued to the region of the buffer member 7 (see FIG. 2) in the first embodiment. Are integrally formed.

次に、図5は第二の実施の形態によるプレキャスト床版の接合構造を示す縦断面図であって、図2に対応する図である。
図5に示すように、第二の実施の形態は、第一の実施の形態の補強板部材6(図2参照)に代えてプレキャスト床版1の突出底部3の下方を厚み方向に増大した厚み補強部9(補強部)を設けたものである。
この厚み補強部9には、プレキャスト床版1の設置方向X(図1参照)に補強鉄筋8が埋設され、補強鉄筋8に直交する方向に配筋4Bが適宜数設けられている。なお、厚み補強部9および突出底部3の端部9a、3aには緩衝部材7を接着させておくことが好ましい。
本第二の実施の形態は、第一の実施の形態と同様の効果を得ることができる。
Next, FIG. 5 is a longitudinal sectional view showing a joint structure of precast slabs according to the second embodiment, and corresponds to FIG.
As shown in FIG. 5, in the second embodiment, the lower portion of the projecting bottom portion 3 of the precast floor slab 1 is increased in the thickness direction in place of the reinforcing plate member 6 (see FIG. 2) of the first embodiment. A thickness reinforcing part 9 (reinforcing part) is provided.
In the thickness reinforcing portion 9, reinforcing reinforcing bars 8 are embedded in the installation direction X (see FIG. 1) of the precast floor slab 1, and a suitable number of reinforcing bars 4 </ b> B are provided in a direction perpendicular to the reinforcing reinforcing bars 8. The buffer member 7 is preferably bonded to the thickness reinforcing portion 9 and the end portions 9 a and 3 a of the protruding bottom portion 3.
The second embodiment can obtain the same effects as those of the first embodiment.

以上、本発明によるプレキャスト床版の接合構造の第一及び第二の実施の形態及びについて説明したが、本発明は上記の第一及び第二の実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。
例えば、本発明による第一及び第二の実施の形態では突出底部3の端3aに緩衝部材7を設けているが、これに限定されることはなく設けなくてもよい。例えば緩衝部材7を設けない場合として、第一の実施の形態で補強部をなす補強板部材6が突出底部3の端3aより張り出している構成を採用してもよい。この場合、プレキャスト床版1A、1B同士の接合時に、先行して補強板部材6同士が当接することになり、互いの接合端面1a、1aが直接当接することがなくなる効果がある。
また、第一及び第二の実施の形態では、補強部(第一の実施の形態では補強板部材6、第2の実施の形態では厚み補強部9に相当)を突出底部3の下面領域に設けているが、この設置範囲は適宜でよい。また、プレキャスト床版の幅方向Yに連続して設置されているが、部分的な範囲であってもかまわない。さらに補強部の厚さ寸法は、プレキャスト床版1や突出底部3の厚さに応じて、突出底部3に欠けやひび割れが発生しない構造に補強できるように設定すればよい。
The first and second embodiments of the precast floor slab joining structure according to the present invention have been described above, but the present invention is not limited to the above first and second embodiments, and Changes can be made as appropriate without departing from the spirit of the invention.
For example, in the first and second embodiments according to the present invention, the buffer member 7 is provided on the end surface 3a of the projecting bottom 3, but the present invention is not limited to this and need not be provided. For example, as a case where the buffer member 7 is not provided, a configuration in which the reinforcing plate member 6 that forms the reinforcing portion in the first embodiment protrudes from the end surface 3 a of the protruding bottom portion 3 may be employed. In this case, at the time of joining the precast floor slabs 1A and 1B, the reinforcing plate members 6 come into contact with each other in advance, and there is an effect that the joining end faces 1a and 1a are not brought into direct contact with each other.
In the first and second embodiments, a reinforcing portion (corresponding to the reinforcing plate member 6 in the first embodiment and the thickness reinforcing portion 9 in the second embodiment) is provided in the lower surface region of the projecting bottom portion 3. Although provided, this installation range may be appropriate. Moreover, although installed continuously in the width direction Y of the precast slab, it may be a partial range. Further, the thickness dimension of the reinforcing portion may be set so that the protruding bottom portion 3 can be reinforced so as not to be chipped or cracked according to the thickness of the precast floor slab 1 or the protruding bottom portion 3.

本発明の第一の実施の形態によるプレキャスト床版の設置状態を示す斜視図である。It is a perspective view which shows the installation state of the precast floor slab by 1st embodiment of this invention. プレキャスト床版の接合構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the joining structure of a precast floor slab. プレキャスト床版の接合部の拡大斜視図である。It is an expansion perspective view of the junction part of a precast floor slab. 第一の実施の形態の変形例によるプレキャスト床版の接合構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the joining structure of the precast slab by the modification of 1st embodiment. 第二の実施の形態によるプレキャスト床版の接合構造を示す縦断面図であって、図2に対応する図である。It is a longitudinal cross-sectional view which shows the joining structure of the precast slab by 2nd embodiment, Comprising: It is a figure corresponding to FIG. 従来のプレキャスト床版の接合構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the joining structure of the conventional precast floor slab.

符号の説明Explanation of symbols

1 プレキャスト床版
1a 接合端面
2 ループ鉄筋
3 突出底部
4 鉄筋
5 固結材
6 補強板部材(補強部)
7 緩衝部材
8 補強鉄筋
9 厚み補強部(補強部)
T 接合空間
DESCRIPTION OF SYMBOLS 1 Precast floor slab 1a Joining end surface 2 Loop reinforcement 3 Protruding bottom part 4 Reinforcement 5 Solidification material 6 Reinforcement board member (reinforcement part)
7 Buffer member 8 Reinforcement reinforcing bar 9 Thickness reinforcement part (reinforcement part)
T joint space

Claims (3)

互いに接合されるプレキャスト床版の接合端面から突出する突出底部と、前記接合端面から突出底部の上部に形成される接合空間に突出するループ鉄筋と、前記接合空間に打設される固結材とを設けたプレキャスト床版の接合構造であって、
前記突出底部の下面には、前記突出底部の厚みを増大させた補強部が設けられ
該補強部の接合側端面は、前記突出底部の端面より接合方向に張り出し、
前記プレキャスト床版の接合時に前記補強部同士が前記突出底部の端面同士の当接より先行して当接することを特徴とするプレキャスト床版の接合構造。
A projecting bottom portion projecting from the joining end surface of the precast slabs to be joined together, a loop reinforcing bar projecting from the joining end surface to a joining space formed at an upper portion of the projecting bottom portion, and a caking material to be placed in the joining space; A precast floor slab joint structure provided with
On the lower surface of the protruding bottom portion, a reinforcing portion that increases the thickness of the protruding bottom portion is provided ,
The joining side end face of the reinforcing part projects in the joining direction from the end face of the protruding bottom part,
The joining structure of a precast floor slab , wherein the reinforcing portions are brought into contact with each other prior to contact between end surfaces of the protruding bottom portions when the precast floor slabs are joined.
前記補強部は、弾性を有する部材であることを特徴とする請求項1に記載のプレキャスト床版の接合構造。 The said reinforcement part is a member which has elasticity, The joining structure of the precast slab of Claim 1 characterized by the above-mentioned. 前記突出底部の端面には、弾性を有する緩衝部材が設けられていることを特徴とする請求項1又は2に記載のプレキャスト床版の接合構造。 The joining structure of the precast slab according to claim 1 or 2 , wherein a buffer member having elasticity is provided on an end surface of the protruding bottom portion .
JP2007149184A 2007-06-05 2007-06-05 Precast slab joint structure Active JP5055028B2 (en)

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JP6857937B2 (en) * 2017-05-31 2021-04-14 株式会社Ihiインフラシステム Precast floor slab joint structure
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