JP3090060U - Joint structure of joint part of precast floor slab - Google Patents
Joint structure of joint part of precast floor slabInfo
- Publication number
- JP3090060U JP3090060U JP2002002864U JP2002002864U JP3090060U JP 3090060 U JP3090060 U JP 3090060U JP 2002002864 U JP2002002864 U JP 2002002864U JP 2002002864 U JP2002002864 U JP 2002002864U JP 3090060 U JP3090060 U JP 3090060U
- Authority
- JP
- Japan
- Prior art keywords
- joint
- floor slab
- joint structure
- reinforcing bars
- precast
- 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.)
- Expired - Fee Related
Links
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
(57)【要約】
【課題】 継目部鉄筋を埋め込んだプレキャスト床版を
製造する際の型枠の組み立て、脱型を容易にする継ぎ手
構造を提供する。
【解決手段】 プレキャスト床版間の継目部Ｘにおける
継ぎ手構造であって、床版１、１´の上面付近および下
面付近に埋め込む鉄筋２ａ、２ｂを、それぞれ相対向す
る床版方向に、上面付近の鉄筋と下面付近の鉄筋とは千
鳥状に配筋すると共に、上面付近の鉄筋と下面付近の鉄
筋は、それぞれ適当間隔置きに配置し、かつ、適当寸法
Ｙほど床版より真直に棒状に突出して設けたことを特徴
とするプレキャスト床版の継目部の継ぎ手構造。
(57) [Summary] [PROBLEMS] To provide a joint structure that facilitates assembling and removing a formwork when manufacturing a precast slab in which a seam reinforcing bar is embedded. SOLUTION: A joint structure at a joint portion X between precast slabs, in which reinforcing bars 2a and 2b embedded near the upper surface and the lower surface of the slabs 1 and 1 'are arranged near the upper surface in the direction of the opposing slabs. The reinforcing steel near the lower surface and the reinforcing steel near the lower surface are arranged in a zigzag pattern, and the reinforcing steel near the upper surface and the reinforcing steel near the lower surface are arranged at appropriate intervals, respectively, and protrude straight from the floor slab by an appropriate dimension Y. The joint structure of the joint part of the precast floor slab characterized by being provided.
Description
【０００１】[0001]
本考案は、プレキャスト床版の継目部の継ぎ手構造に関するものである。 The present invention relates to a joint structure of a joint portion of a precast slab.
【０００２】[0002]
従来、プレキャスト床版継目部鉄筋の継ぎ手方法としては、ループ鉄筋継ぎ手 が一般的に採用されている。これは、図４に示すように、このループ鉄筋の重ね 継ぎ手により、床版を連続一体化する現場打ち継ぎ手構造である。しかし、ルー プ継ぎ手には、次のような問題点があった。 Conventionally, a loop reinforcing joint has been generally used as a joint method of the reinforcing steel of the precast floor slab. As shown in FIG. 4, this is an in-situ joint structure in which floor slabs are continuously integrated by the lap joint of the loop reinforcing bar. However, the loop joint had the following problems.
【０００３】 即ち、床版の製造において、ループ上の鉄筋を埋め込むため、型枠の加工、組 み立て、脱型などの作業において、極めて作業性が悪いものであった。[0003] That is, in the manufacture of a floor slab, since the reinforcing bars on the loops are embedded, workability in formwork processing, assembling, demolding, and the like is extremely poor.
【０００４】 さらに、現場での継目部鉄筋の組み立てにおいて、左右プレキャスト床版に埋 め込まれたループ鉄筋により形成される円形部内（Ａ）への鉄筋配置に対する作 業性も悪いものであった。[0004] Furthermore, in assembling the joint reinforcement at the site, workability for disposing the reinforcement in the circular portion (A) formed by the loop reinforcement embedded in the left and right precast slabs is also poor. .
【０００５】 そして、その具体的な作業としては、鉄筋を上から落とし込むことができない ため、床版側面から、円形部内に向けて鉄筋を挿入することになる。[0005] As a specific operation, since the reinforcing bar cannot be dropped from above, the reinforcing bar is inserted from the side surface of the floor slab into the circular portion.
【０００６】 しかし、広幅員の場合、挿入する鉄筋の長さも長尺となり、クレーンなどの揚 重設備が必要となり、建築限界等による現場ヤードの制約を受ける可能性がある ことなど、施工性だけでなく、経済性の面からも大きな問題となっている。[0006] However, in the case of a wide member, the length of the inserted rebar is also long, requiring lifting equipment such as a crane, and there is a possibility of being restricted by a site yard due to construction limitations and the like, so that only the workability is improved. But it is also a big problem from the economic point of view.
【０００７】 これらの問題を解決する方策として、従来からの鉄筋継ぎ手方法である重ね継 ぎ手も考えられるが、この方法も鉄筋を重ねると（段重ね）その部分にコンクリ ートが回らず、鉄筋とコンクリートの付着性能の低下を招くなどの問題が生ずる 。[0007] As a measure to solve these problems, a lap joint, which is a conventional rebar joint method, can be considered. However, when this method is used, when the rebar is overlapped (tiered), the concrete does not turn around the part, Problems such as a decrease in the adhesion performance between the reinforcing steel and the concrete occur.
【０００８】[0008]
そこで、従来工法の問題点を改善する、プレキャスト床版の継目部の継ぎ手構 造を開発することにある。 Therefore, it is necessary to develop a joint structure at the seam of the precast slab, which solves the problems of the conventional method.
【０００９】[0009]
その手段として本考案は、プレキャスト床版の上面および下面付近に、それぞ れ棒状の鉄筋を、該鉄筋が重ならないように、千鳥状に配筋し、相対するプレキ ャスト床版の上面の鉄筋と下面の鉄筋とも重ならないように配置したことを特徴 とするプレキャスト床版の継ぎ手構造とすることにある。 As a means for this, the present invention provides a bar-shaped reinforcing bar in the vicinity of the upper surface and the lower surface of the precast slab in a staggered manner so that the reinforcing bars do not overlap with each other. And a joint structure of a precast floor slab characterized by being arranged so as not to overlap with the reinforcing steel on the lower surface.
【００１０】[0010]
本考案の一実施例を図１、図２そして図３に基づいて詳細に説明すると、プレ キャスト床版間の継目部（Ｘ）における継ぎ手構造であって、床版（１）（１´ ）の上面付近および下面付近に埋め込む鉄筋（２ａ）（２ｂ）を、それぞれ相対 向する床版方向に、上面付近の鉄筋（２ａ）と下面付近の鉄筋（２ｂ）とは、千 鳥状に設けると共に、上面付近の鉄筋（２ａ）と下面付近の鉄筋（２ｂ）は、そ れぞれ床版（１）（１´）より棒状に突出して配筋したことを特徴とするプレキ ャスト床版の継目部の継ぎ手構造からなるものである。 One embodiment of the present invention will be described in detail with reference to FIGS. 1, 2 and 3, which show a joint structure at a joint (X) between precast slabs, and the slabs (1) (1 '). Reinforcing bars (2a) and (2b) to be embedded near the upper surface and the lower surface are provided in a staggered manner with the reinforcing bar (2a) near the upper surface and the reinforcing bar (2b) near the lower surface in the facing slab direction, respectively. The reinforcing bars (2a) near the upper surface and the reinforcing bars (2b) near the lower surface protrude from the floor slabs (1) and (1 ') in a bar shape, and are laid out. It has a joint structure.
【００１１】 なお、（２ａ）および（２ｂ´）は、相対向する床版（１´）のそれぞれ上面 付近の鉄筋と下面付近の鉄筋であり、これらの各鉄筋は、前記床版（１）の鉄筋 とは、図１に示すように、互いにクシ歯状に配筋されており、それぞれの継目部 に入り込む状態となり、さらに、それぞれの上面付近の鉄筋と下面付近の鉄筋と は、図２および図３に示すように、千鳥状に配筋されている。[0011] Note that (2a) and (2b ') are a reinforcing bar near the upper surface and a reinforcing bar near the lower surface of the opposing floor slab (1'), respectively. As shown in FIG. 1, the reinforcing bars are arranged in a comb-like shape and come into each joint, and the reinforcing bar near the upper surface and the reinforcing bar near the lower surface are shown in FIG. And as shown in FIG. 3, the bars are arranged in a staggered manner.
【００１２】 そして、継目部（Ｘ）における鉄筋の重ね長さ（Ｚ）の寸法は、一例としては ２５〜３０ｃｍくらいであり、鉄筋の径も、一例としては１６〜２２ｍｍのもの を使用するものである。また、（３）は、継目部に床版支間方向に配設された主 筋である。The dimension of the overlapping length (Z) of the reinforcing bars at the joint (X) is, for example, about 25 to 30 cm, and the diameter of the reinforcing bars is, for example, 16 to 22 mm. It is. Further, (3) is a main reinforcement arranged at the joint portion in the direction of the floor slab span.
【００１３】[0013]
以上、説明したように本考案によると、床版の継目部には、ループ状の鉄筋で はなく、棒状の鉄筋を設けており、型枠の加工、組み立て、脱型などの作業にお いて、また、継目部鉄筋の組み立てに関する施工性および経済性が向上でき、さ らに、千鳥状に配筋したため、段重ねとならず、従って、鉄筋とコンクリートの 付着性能もよく、施工性の向上が図れるなど極めて有益となる効果を奏する。 As described above, according to the present invention, the seam of the floor slab is provided with a bar-shaped reinforcing bar instead of a loop-shaped reinforcing bar. In addition, the workability and economy of assembling the seam reinforcement can be improved, and the staggered arrangement does not result in the formation of tiers, thus improving the adhesion between the reinforcement and concrete, improving workability. This has an extremely beneficial effect, for example.
【図１】この考案の一実施例を示す一部欠載平面図であ
る。FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention.
【図２】この考案の一実施例を示す一部欠載平正面図で
ある。FIG. 2 is a partially cutaway front view showing an embodiment of the present invention.
【図３】この考案の一実施例を示す一部欠載側面図であ
る。FIG. 3 is a partially cutaway side view showing an embodiment of the present invention.
【図４】従来例を示す一部欠載斜視図である。FIG. 4 is a partially omitted perspective view showing a conventional example.
【図５】この考案の一実施例を示す２ａ、２ａ´、２
ｂ、２ｂ´の先端形状図である。FIG. 5 shows 2a, 2a ', and 2a showing one embodiment of the present invention.
It is a front-end | tip shape figure of b, 2b '.
１ 床版 １´床版 ２ａ 上面付近の鉄筋 ２ａ´上面付近の鉄筋 ２ｂ 下面付近の鉄筋 ２ｂ´下面付近の鉄筋 ３ 主筋 Ａ ループ鉄筋により形成される円形部 Ｘ 継目部 Ｙ 寸法 Ｚ 継目部における床版１と床版１´から突出している
鉄筋相互の重ね合わせ長さDESCRIPTION OF SYMBOLS 1 Floor slab 1 'Floor slab 2a Reinforcing bar near the upper surface 2a' Reinforcing bar near the upper surface 2b Reinforcing bar near the lower surface 2B 'Reinforcing bar near the lower surface 3 Main bar A Round part formed by loop reinforcing bar X Joint Y dimension Z Floor at joint Overlap length of rebar projecting from plate 1 and floor slab 1 '
Claims (1)
ぎ手構造であって、床版の上面付近および下面付近に埋
め込む鉄筋を、それぞれ相対向する床版方向に、上面付
近の鉄筋と下面付近の鉄筋とは千鳥状に配筋すると共
に、上面付近の鉄筋と下面付近の鉄筋は、それぞれ適当
間隔置きに配置し、かつ、適当寸法ほど床版より真直に
棒状に突出もしくわ、下面付近の鉄筋を突出後上に曲げ
上げて設けたことを特徴とするプレキャスト床版の継目
部の継ぎ手構造。1. A joint structure at a joint portion between precast slabs, wherein reinforcing bars embedded near an upper surface and a lower surface of the slab are provided with reinforcing bars near the upper surface and lower surfaces near the lower surface, respectively, in opposing directions. In addition to arranging the reinforcing bars in a staggered manner, the reinforcing bars near the upper surface and the reinforcing bars near the lower surface are arranged at appropriate intervals, respectively, and may have a suitable size and project straight from the floor slab in a bar shape. The joint structure of the joint part of the precast floor slab characterized by being bent upward after projecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002002864U JP3090060U (en) | 2002-05-17 | 2002-05-17 | Joint structure of joint part of precast floor slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002002864U JP3090060U (en) | 2002-05-17 | 2002-05-17 | Joint structure of joint part of precast floor slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3090060U true JP3090060U (en) | 2002-11-22 |
Family
ID=43241299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002002864U Expired - Fee Related JP3090060U (en) | 2002-05-17 | 2002-05-17 | Joint structure of joint part of precast floor slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3090060U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005023726A (en) * | 2003-07-01 | 2005-01-27 | Taisei Corp | Joining structure of beam and floor slab and joining method for beam and floor slab |
| KR101283542B1 (en) * | 2011-06-21 | 2013-07-15 | 주식회사 장헌산업 | Constructing Method of Bridge using Half Precast Panel having Connecting Bar |
| JP2018080460A (en) * | 2016-11-14 | 2018-05-24 | 鹿島建設株式会社 | Connection structure and connection method |
| JP2018150754A (en) * | 2017-03-14 | 2018-09-27 | 株式会社竹中工務店 | Joining structure of precast concrete plate and joining method of precast concrete plate |
-
2002
- 2002-05-17 JP JP2002002864U patent/JP3090060U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005023726A (en) * | 2003-07-01 | 2005-01-27 | Taisei Corp | Joining structure of beam and floor slab and joining method for beam and floor slab |
| KR101283542B1 (en) * | 2011-06-21 | 2013-07-15 | 주식회사 장헌산업 | Constructing Method of Bridge using Half Precast Panel having Connecting Bar |
| JP2018080460A (en) * | 2016-11-14 | 2018-05-24 | 鹿島建設株式会社 | Connection structure and connection method |
| JP2018150754A (en) * | 2017-03-14 | 2018-09-27 | 株式会社竹中工務店 | Joining structure of precast concrete plate and joining method of precast concrete plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |