JPH0681351A - Concrete double-slab structure - Google Patents
Concrete double-slab structureInfo
- Publication number
- JPH0681351A JPH0681351A JP4238396A JP23839692A JPH0681351A JP H0681351 A JPH0681351 A JP H0681351A JP 4238396 A JP4238396 A JP 4238396A JP 23839692 A JP23839692 A JP 23839692A JP H0681351 A JPH0681351 A JP H0681351A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- post
- slab
- reinforcing bars
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は地下室等の地下構造物
中に浸入する地下水を排水するなどを目的とするコンク
リート二重スラブの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a concrete double slab for draining groundwater invading an underground structure such as a basement.
【０００２】[0002]
【従来の技術】従来、コンクリートの二重スラブを構築
するには図４のごとく、鉄筋コンクリートの基礎スラブ
１上に脚部３を有するプラスチック製等の捨型枠２を配
置し、その上に鉄筋４、あるいはワイヤメッシュ等をス
ペーサーで支持し浮上がらせて配筋した後、後打ちコン
クリートスラブ５を打設している。この後打ちコンクリ
ートスラブ５は自由収縮してクラックを発生するので、
クラックの無造作な発生を制御し、誘発目地に集中させ
るために、数メートル間隔にカッター目地６を設けてい
る。2. Description of the Related Art Conventionally, in order to construct a concrete double slab, as shown in FIG. 4, a scrap frame 2 made of plastic or the like having legs 3 is arranged on a reinforced concrete foundation slab 1, and the reinforcing bar is placed on it. 4, or a wire mesh or the like is supported by a spacer to float and arrange the reinforcement, and then a post-cast concrete slab 5 is placed. Since this post-cast concrete slab 5 shrinks freely and cracks occur,
Cutter joints 6 are provided at intervals of several meters in order to control the random occurrence of cracks and concentrate them on the induced joints.
【０００３】ところが、図５のようにカッター目地６が
浅いと、鉄筋４を切断しないため、ひび割れを集中させ
る誘発目地としての機能を発揮することはむずかしい。
また深くして鉄筋を切断すると、ひび割れを集中させる
ことができるが、隣接する後打ちコンクリートスラブ
５，５が互いに垂直方向にずれることを拘束し得なくな
る。このために図６のように、予めカッター目地６を施
す位置にスリップバー７を配筋しておく方法がとられて
いる。However, if the cutter joint 6 is shallow as shown in FIG. 5, the reinforcing bar 4 is not cut, so that it is difficult to exhibit the function as an induction joint for concentrating cracks.
Further, when the reinforcing bars are cut deeply to cut the reinforcing bars, the cracks can be concentrated, but it becomes impossible to prevent the adjacent post-cast concrete slabs 5 and 5 from being vertically displaced from each other. For this reason, as shown in FIG. 6, a method in which the slip bar 7 is arranged in advance at a position where the cutter joint 6 is provided is adopted.
【０００４】このように、従来は誘発目地にひび割れを
効果的に集中させるための工法は複雑で手間がかかり、
工期も長くなる欠点があった。As described above, the conventional method for effectively concentrating the cracks on the induced joint is complicated and labor-intensive.
There was a drawback that the construction period was long.
【０００５】[0005]
【発明が解決しようとする課題】この発明は上記事情に
鑑みなされたものである。その目的は、鉄筋やワイヤメ
ッシュ、スリップバーの配筋工事を省略でき、かつ自由
な位置にカッター目地を施し、誘発目地としてひび割れ
を集中させることができるコンクリート二重スラブ構造
を提案するにある。The present invention has been made in view of the above circumstances. The purpose is to propose a concrete double slab structure that can omit reinforcing bar, wire mesh, and slip bar arranging work, and can provide cutter joints at free positions to concentrate cracks as induced joints.
【０００６】[0006]
【課題を解決するための手段】このコンクリート二重ス
ラブ構造は、基礎スラブ上に脚部を有する捨型枠を配
し、その上に後打ちコンクリートを打設してなるコンク
リート二重スラブ構造において、後打ちコンクリートは
スチールファイバー補強コンクリートからなることを特
徴とする。[Means for Solving the Problems] This concrete double slab structure is a concrete double slab structure in which a scrap frame having legs is arranged on a foundation slab and a post-cast concrete is placed on it. The post-cast concrete is characterized by being made of steel fiber reinforced concrete.
【０００７】[0007]
【作用】上記構成からなる二重スラブ構造は、後打ちコ
ンクリートスラブに混入してあるスチールファイバーが
スリップバーの機能を発揮し、カッター目地部に発生す
るスラブ間の垂直方向のずれを拘束する。従って、後打
ちコンクリートスラブの任意の位置にカッター目地を施
工できる。また、スチールファイバーは均等にスラブを
補強するので、カッター目地の断面欠損部に収縮クラッ
クが集中し、無造作の収縮クラックの発生を極めて少と
することができる。In the double slab structure having the above structure, the steel fibers mixed in the post-cast concrete slab exert the function of a slip bar, and restrain the vertical deviation between the slabs generated at the joint portion of the cutter. Therefore, the cutter joint can be installed at any position of the post-cast concrete slab. Further, since the steel fiber uniformly reinforces the slab, shrinkage cracks are concentrated in the cross-section defective portion of the cutter joint, and the occurrence of random shrinkage cracks can be extremely reduced.
【０００８】[0008]
【実施例】図１，２において、基礎スラブ１上に実開平
３−１３３４４号公報に示される脚部３が下面に突出し
たプラスチック製の捨型枠２を複数敷並べ配置し、その
上にスチールファイバーを予め混入してあるスチールフ
ァイバーコンクリート８を打設して後打ちコンクリート
スラブを施工し、収縮クラック９を集中させる位置にカ
ッター目地６を施す。1 and 2, a plurality of plastic scrap frames 2 in which a leg portion 3 shown in Japanese Utility Model Laid-Open No. 3-13344 is projected on the lower surface are laid on a basic slab 1 and arranged on top of it. Steel fiber concrete 8 in which steel fibers are mixed in advance is cast, a post-cast concrete slab is constructed, and cutter joints 6 are provided at positions where shrinkage cracks 9 are concentrated.
【０００９】図３に示す実施例は、図１，２の実施例の
捨型枠２の形状を変えたものである。いずれも脚部３の
高さに見合った空隙が基礎スラブ１とスチールファイバ
ーコンクリート８との間に設けられる。The embodiment shown in FIG. 3 is obtained by changing the shape of the scrap frame 2 of the embodiment shown in FIGS. In each case, a void corresponding to the height of the leg portion 3 is provided between the foundation slab 1 and the steel fiber concrete 8.
【００１０】[0010]
【発明の効果】この二重スラブ構造によると、後打ちコ
ンクリートの鉄筋、スリップバー、あるいは配筋を支持
するスペーサー等の工事が省略でき工事の省力化、工期
の短縮が可能となる。また、無造作な収縮クラックの発
生を極めて少なくすることができる。According to this double slab structure, it is possible to omit the work such as the reinforcing bars of the post-cast concrete, the slip bars, or the spacers for supporting the bar arrangement, thereby saving labor and shortening the construction period. Further, the occurrence of random shrinkage cracks can be extremely reduced.
【図１】実施例の二重スラブ構造を一部断面で示す斜視
図である。FIG. 1 is a perspective view showing a partial cross section of a double slab structure of an embodiment.
【図２】図１の縦断面図である。FIG. 2 is a vertical sectional view of FIG.
【図３】別の実施例の二重スラブ構造を示す縦断面図で
ある。FIG. 3 is a vertical sectional view showing a double slab structure of another embodiment.
【図４】従来の二重スラブ構造を一部断面で示す斜視図
である。FIG. 4 is a perspective view showing a conventional double slab structure in a partial cross section.
【図５】図４の縦断面図である。5 is a vertical cross-sectional view of FIG.
【図６】スリップバーを配筋した従来の二重スラブ構造
を示す縦断面図である。FIG. 6 is a vertical cross-sectional view showing a conventional double slab structure in which slip bars are arranged.
１…基礎スラブ、２…捨型枠、３…脚部、４…鉄筋、５
…後打ちコンクリートスラブ、６…カッター目地、７…
スリップバー、８…スチールファイバーコンクリート、
９…収縮クラック。1 ... Foundation slab, 2 ... Waste form, 3 ... Leg part, 4 ... Reinforcing bar, 5
… Post-cast concrete slab, 6… Cutter joint, 7…
Slip bar, 8 ... Steel fiber concrete,
9 ... Shrinkage crack.
───────────────────────────────────────────────────── フロントページの続き (71)出願人 000112967 ブリヂストン・ベカルト・スチール・コー ド株式会社 東京都中央区京橋１丁目18番１号 (72)発明者 大川 安雄 東京都港区元赤坂１丁目２番７号 鹿島建 設株式会社内 (72)発明者 小松 康夫 東京都練馬区北町２丁目26−６−404 (72)発明者 中村 勝敏 三重県四日市市川尻町1000番地 三菱油化 バーディッシェ株式会社内 (72)発明者 深津 章文 千葉県柏市富里２−４ 柏富里ハイツ２− 702 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000112967 Bridgestone Bekaert Steel Cord Co., Ltd. 1-18.1 Kyobashi, Chuo-ku, Tokyo (72) Inventor Yasuo Okawa 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Yasuo Komatsu 2-26-6-404 Kitamachi, Nerima-ku, Tokyo (72) Inventor Katsutoshi Nakamura 1000 Kawajiri-cho, Yokkaichi-shi, Mie Mitsubishi Petrochemical Badishe Co., Ltd. (72) Inventor Akifumi Fukatsu 2-4 Tomisato, Kashiwa City, Chiba Prefecture 2-702 Kashiwa Tomisato Heights
Claims (1)
し、その上に後打ちコンクリートを打設してなるコンク
リート二重スラブ構造において、後打ちコンクリートは
スチールファイバー補強コンクリートからなることを特
徴とするコンクリート二重スラブ構造。1. In a concrete double slab structure in which a scrap frame having legs is arranged on a foundation slab and a post-cast concrete is placed thereon, the post-cast concrete is made of steel fiber reinforced concrete. Concrete double slab structure featuring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4238396A JPH0681351A (en) | 1992-09-07 | 1992-09-07 | Concrete double-slab structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4238396A JPH0681351A (en) | 1992-09-07 | 1992-09-07 | Concrete double-slab structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0681351A true JPH0681351A (en) | 1994-03-22 |
Family
ID=17029581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4238396A Pending JPH0681351A (en) | 1992-09-07 | 1992-09-07 | Concrete double-slab structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0681351A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8611581B2 (en) | 2006-01-12 | 2013-12-17 | Sony Corporation | Earphone device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01290827A (en) * | 1988-05-19 | 1989-11-22 | Taisei Corp | Spring water discharge method for building and cement press panel for spring water discharge |
| JPH02300423A (en) * | 1989-10-30 | 1990-12-12 | Shimizu Corp | Form panel and sump water-disposing structure therewith |
| JPH0462248A (en) * | 1990-06-29 | 1992-02-27 | Taisei Corp | Spring treatment member and apparatus |
-
1992
- 1992-09-07 JP JP4238396A patent/JPH0681351A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01290827A (en) * | 1988-05-19 | 1989-11-22 | Taisei Corp | Spring water discharge method for building and cement press panel for spring water discharge |
| JPH02300423A (en) * | 1989-10-30 | 1990-12-12 | Shimizu Corp | Form panel and sump water-disposing structure therewith |
| JPH0462248A (en) * | 1990-06-29 | 1992-02-27 | Taisei Corp | Spring treatment member and apparatus |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8611581B2 (en) | 2006-01-12 | 2013-12-17 | Sony Corporation | Earphone device |
| US8913773B2 (en) | 2006-01-12 | 2014-12-16 | Sony Corporation | Earphone device |
| US9008345B2 (en) | 2006-01-12 | 2015-04-14 | Sony Corporation | Earphone device |
| US9014410B2 (en) | 2006-01-12 | 2015-04-21 | Sony Corporation | Earphone device |
| US9020181B2 (en) | 2006-01-12 | 2015-04-28 | Sony Corporation | Earphone device |
| US9179212B2 (en) | 2006-01-12 | 2015-11-03 | Sony Corporation | Earphone device |
| US9232294B2 (en) | 2006-01-12 | 2016-01-05 | Sony Corporation | Earphone device |
| US9491533B2 (en) | 2006-01-12 | 2016-11-08 | Sony Corporation | Earphone device |
| US9930437B2 (en) | 2006-01-12 | 2018-03-27 | Sony Corporation | Earphone device |
| US9949006B2 (en) | 2006-01-12 | 2018-04-17 | Sony Corporation | Earphone device |
| US9949007B2 (en) | 2006-01-12 | 2018-04-17 | Sony Corporation | Earphone device |
| US9961428B2 (en) | 2006-01-12 | 2018-05-01 | Sony Corporation | Earphone device |
| US11375307B2 (en) | 2006-01-12 | 2022-06-28 | Sony Group Corporation | Earphone device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19960723 |