JPH07111055B2 - Wall concrete structure with joints - Google Patents
Wall concrete structure with jointsInfo
- Publication number
- JPH07111055B2 JPH07111055B2 JP14493591A JP14493591A JPH07111055B2 JP H07111055 B2 JPH07111055 B2 JP H07111055B2 JP 14493591 A JP14493591 A JP 14493591A JP 14493591 A JP14493591 A JP 14493591A JP H07111055 B2 JPH07111055 B2 JP H07111055B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- concrete structure
- joints
- wall
- shaped body
- 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 - Lifetime
Links
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ひび割れ誘発のための
目地を備えた壁状コンクリート構造物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall-shaped concrete structure provided with joints for inducing cracks.
【０００２】[0002]
【従来の技術】従来、鉄筋で補強された壁状コンクリー
ト構造物に発生するひび割れを特定の箇所に発生させる
ために、間隔を存して目地を設けることは行われてい
る。壁状コンクリート構造物が例えば土留め壁の場合、
図１に示すように補強の鉄筋ａは縦横に組まれ、ひび割
れｂは目地ｃに於いて発生することになる。2. Description of the Related Art Heretofore, joints have been provided at intervals in order to generate cracks in a wall-shaped concrete structure reinforced with reinforcing bars at specific places. If the wall concrete structure is, for example, a retaining wall,
As shown in FIG. 1, the reinforcing bars a are assembled vertically and horizontally, and cracks b occur at joints c.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のもののよう
に鉄筋ａが連続して設けられていると、コンクリートの
断面を欠損させた目地だけは特定の箇所にひび割れを誘
発させることが困難であった。また、ひび割れｂが発生
すると、そこから水が該構造物内に侵入し、鉄筋ａが腐
食して構造物の強度を低下させる不都合があり、その不
都合の解消のために目地に充填材を施し、水の侵入を防
止することが可能であるが、前記のようにひび割れの箇
所は目地の箇所とは限らないので、充填材の効果が十分
に発揮できず無駄になることが多い。When the reinforcing bars a are continuously provided as in the above-mentioned conventional ones, it is difficult to induce cracks at specific locations only in joints where the concrete cross section is lost. It was Further, when the crack b is generated, water intrudes into the structure from the crack b, and the reinforcing bar a is corroded to reduce the strength of the structure. To solve the problem, a filler is applied to the joint. Although it is possible to prevent water from entering, since the cracked portion is not limited to the joint portion as described above, the effect of the filler cannot be fully exerted and is often wasted.
【０００４】本発明は、ひび割れを特定の箇所に発生さ
せ得られ、また、ひび割れの発生による浸水で強度が低
下しない壁状コンクリート構造物を提供することを目的
とするものである。It is an object of the present invention to provide a wall-like concrete structure which can be caused to have a crack at a specific place and whose strength is not deteriorated by the inundation caused by the crack.
【０００５】[0005]
【課題を解決するための手段】本発明に於いては、鉄筋
で補強された壁状コンクリート構造物の適当箇所にひび
割れ誘発目地を設けるようにしたものに於いて、該壁状
コンクリート構造物の補強材を鉄筋と樹脂含浸繊維の棒
状体とを連結したもので構成し、該棒状体と対向する箇
所にひび割れ誘発目地を設けることにより、上記の目的
を達成するようにした。DISCLOSURE OF THE INVENTION In the present invention, a crack-inducing joint is provided at an appropriate point of a wall-shaped concrete structure reinforced by reinforcing bars, and the wall-shaped concrete structure is The above-mentioned object was achieved by constructing the reinforcing material by connecting a reinforcing bar and a rod-shaped body of resin-impregnated fiber, and providing a crack-inducing joint at a position facing the rod-shaped body.
【０００６】[0006]
【作用】ひび割れ誘発目地の箇所に設けられた樹脂含浸
繊維の棒状体は、弾性率が鉄筋よりも小さいため、確実
にその箇所にひび割れを発生させることが出来、また発
生したひび割れから地下水等が壁状コンクリート構造物
の内部へ侵入するが、ひび割れによって現れる箇所の補
強材は樹脂含浸繊維の棒状体で構成されているので、水
分により腐食することがなく、補強材の強度が低下する
ことがなくなり、従って該構造体自体の耐久性が向上す
る。[Function] Since the resin-impregnated fiber rod provided at the location of the crack-inducing joint has a smaller elastic modulus than the reinforcing bar, it is possible to reliably produce a crack at that location, and the groundwater etc. can be generated from the produced crack. Since the reinforcing material at the place where it penetrates into the wall-shaped concrete structure but appears due to cracking is composed of resin-impregnated fiber rods, it does not corrode due to moisture and the strength of the reinforcing material may decrease. Therefore, the durability of the structure itself is improved.
【０００７】[0007]
【実施例】本発明の実施例を図面に基づき説明すると、
図２に於いて符号１は内部に補強材２を埋設してコンク
リート打ちされた土留め壁等の壁状コンクリート構造物
を示し、該構造物１には適当な間隔を存して上下方向の
ひび割れ誘発のための目地５が形成される。該補強材２
は棒状材を縦横に編組してコンクリートの打設箇所に用
意されるが、該補強材２を鉄筋３と樹脂含浸繊維の棒状
体４を直線状に連結したもので構成し、該棒状体４と対
向する箇所に目地５が位置するようにコンクリート６を
打設するようにした。該棒状体４は例えば図３に見られ
るように、全芳香族ポリアミド繊維の紐７にエポキシ樹
脂８を含浸させて形成した可撓性のある棒状体で構成さ
れ、その両端は適当な連結具或いは金属線により鉄筋３
に連結する。該棒状体４を構成する紐７を炭素繊維等の
引張強度の大きい繊維とし、含浸させる樹脂としてフェ
ノール樹脂等の紐７を接合出来る樹脂を使用してもよい
が、その全体としての引張強度は鉄筋のそれを越える強
度を有する棒状体が使用される。Embodiments of the present invention will be described with reference to the drawings.
In FIG. 2, reference numeral 1 indicates a wall-shaped concrete structure such as an earth retaining wall in which a reinforcing material 2 is embedded and is concrete-cast. The structure 1 is vertically spaced with an appropriate interval. Joints 5 are formed for inducing cracks. The reinforcing material 2
Is prepared at a place where concrete is placed by braiding rod-shaped members in the vertical and horizontal directions. The reinforcing member 2 is composed of a reinforcing rod 3 and a rod-shaped body 4 of resin-impregnated fiber linearly connected to each other. The concrete 6 is placed so that the joint 5 is located at a position opposite to. As shown in FIG. 3, for example, the rod-shaped body 4 is made of a flexible rod-shaped body formed by impregnating a cord 7 of wholly aromatic polyamide fiber with an epoxy resin 8, and both ends thereof are provided with suitable connecting members. Or rebar 3 by metal wire
Connect to. The string 7 forming the rod-shaped body 4 may be a fiber having a high tensile strength such as carbon fiber, and a resin such as a phenol resin capable of joining the string 7 may be used as the impregnating resin. A rod-shaped body having a strength exceeding that of the reinforcing bar is used.
【０００８】該棒状体４は鉄筋よりも弾性率が小さいた
めに、これを設けた目地５の箇所からひび割れ９を発生
させることが出来、ひび割れ９から地下水、雨水が該構
造物１の内部へ侵入しても、そのひび割れした箇所に現
れる補強材２は樹脂含浸繊維の棒状体４であるので、水
分により補強材２が腐食されることがなくなり、目地に
充填材を設けることなく構造物１の強度を保つことがで
きる。Since the rod-shaped body 4 has a smaller elastic modulus than the reinforcing bar, cracks 9 can be generated from the joint 5 where the bar is provided, and groundwater and rainwater can flow from the cracks 9 into the structure 1. Even if it penetrates, the reinforcing material 2 that appears at the cracked portion is the rod-shaped body 4 of the resin-impregnated fiber, so that the reinforcing material 2 will not be corroded by moisture, and the structure 1 without the filler being provided in the joints. The strength of can be maintained.
【０００９】[0009]
【発明の効果】以上のように本発明によるときは、壁状
コンクリート構造物の補強材を鉄筋と樹脂含浸繊維の棒
状体とを連結したもので構成し、該棒状体と対向する箇
所にひび割れ誘発目地を設けたので、該構造物の目地に
於いて確実にひび割れを発生させ得ると共に発生するひ
び割れが原因で補強材が腐食する不都合がなくなり、腐
蝕による構造物の強度の低下を簡単に防止できる等の効
果がある。As described above, according to the present invention, the reinforcing material for the wall-shaped concrete structure is constituted by connecting the reinforcing bar and the rod-shaped body of the resin-impregnated fiber, and the portion facing the rod-shaped body is cracked. Since the induced joints are provided, cracks can be reliably generated in the joints of the structure, and the inconvenience that the reinforcing material is corroded due to the generated cracks is eliminated, and the deterioration of the strength of the structure due to corrosion can be easily prevented. There are effects such as being able to.
【図１】従来例の截断平面図FIG. 1 is a cutaway plan view of a conventional example.
【図２】本発明の実施例の截断平面図FIG. 2 is a cutaway plan view of an embodiment of the present invention.
【図３】樹脂含浸繊維の棒状体の側面図FIG. 3 is a side view of a rod-shaped body of resin-impregnated fiber.
１ 壁状コンクリート構造物 ２ 補強材 ３ 鉄筋 ４ 樹脂含浸繊維の棒状体 ５ 目地 1 Wall-like concrete structure 2 Reinforcing material 3 Reinforcing bar 4 Resin-impregnated fiber rod 5 Joint
Claims (2)
の適当箇所にひび割れ誘発目地を設けるようにしたもの
に於いて、該壁状コンクリート構造物の補強材を鉄筋と
樹脂含浸繊維の棒状体とを連結したもので構成し、該棒
状体と対向する箇所にひび割れ誘発目地を設けたことを
特徴とする目地を備えた壁状コンクリート構造物。1. A wall-shaped concrete structure reinforced with reinforcing bars, wherein a crack-inducing joint is provided at an appropriate position, and the reinforcing material for the wall-shaped concrete structure is a rod-shaped body of reinforcing bars and resin-impregnated fibers. A wall-shaped concrete structure provided with joints, characterized in that the joints are formed by connecting and, and a crack-inducing joint is provided at a position facing the rod-shaped body.
リアミド繊維の紐にエポキシ樹脂を含浸させて形成した
棒状体から成ることを特徴とする目地を備えた壁状コン
クリート構造物。2. A wall-shaped concrete structure with joints, wherein the rod-shaped body of the resin-impregnated fiber is a rod-shaped body formed by impregnating a cord of wholly aromatic polyamide fiber with an epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14493591A JPH07111055B2 (en) | 1991-06-17 | 1991-06-17 | Wall concrete structure with joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14493591A JPH07111055B2 (en) | 1991-06-17 | 1991-06-17 | Wall concrete structure with joints |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04368510A JPH04368510A (en) | 1992-12-21 |
| JPH07111055B2 true JPH07111055B2 (en) | 1995-11-29 |
Family
ID=15373618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14493591A Expired - Lifetime JPH07111055B2 (en) | 1991-06-17 | 1991-06-17 | Wall concrete structure with joints |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07111055B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5574288B2 (en) * | 2009-11-30 | 2014-08-20 | 日本コンクリート技術株式会社 | Wall structure joints |
| JP6370561B2 (en) * | 2014-02-25 | 2018-08-08 | 三井住友建設株式会社 | Reinforced concrete structure wall |
| CN107119808B (en) * | 2017-05-23 | 2019-05-10 | 中国建筑第八工程局有限公司 | Induce crack structure and its construction method |
-
1991
- 1991-06-17 JP JP14493591A patent/JPH07111055B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04368510A (en) | 1992-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960730 |