JP2963281B2 - Cavity mat slab - Google Patents
Cavity mat slabInfo
- Publication number
- JP2963281B2 JP2963281B2 JP4211611A JP21161192A JP2963281B2 JP 2963281 B2 JP2963281 B2 JP 2963281B2 JP 4211611 A JP4211611 A JP 4211611A JP 21161192 A JP21161192 A JP 21161192A JP 2963281 B2 JP2963281 B2 JP 2963281B2
- Authority
- JP
- Japan
- Prior art keywords
- mat slab
- slab
- concrete
- cavity
- mat
- 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
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は地下構造物基礎の下面
にキャビティー（空間）を有するマットスラブに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mat slab having a cavity (space) on a lower surface of an underground structure foundation .
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】従
来、地下室等の地下構造物は浸入する地下水を排出する
排水空間を確保するために、図４のように、地下構造物
基礎のマットスラブ１上に、下面に脚部３を有する平板
状の捨型枠２を敷設し、その上に後打ちコンクリートを
打設して上部スラブ４を構築し、マットスラブ１と上部
スラブ４との間に縦横に連通する排水用の空間５を設け
ていた。図４において、６は柱、７はコンクリートブロ
ック二重壁、８は壁、９は捨てコンクリート、１０は通
水管であり、立上り壁１１を貫通し、二重壁内の排水溝
１２と空間５を連通する。2. Description of the Related Art Conventionally, an underground structure such as a basement is provided with an underground structure as shown in FIG. 4 in order to secure a drainage space for discharging infiltrated groundwater.
On the base mat slab 1, a flat discarded form frame 2 having legs 3 on the lower surface is laid, and after-cast concrete is cast thereon to form an upper slab 4, and the mat slab 1 and the upper slab are constructed. 4, a space 5 for drainage communicating vertically and horizontally is provided. In FIG. 4, 6 is a column, 7 is a concrete block double wall, 8 is a wall, 9 is discarded concrete, 10 is a water pipe, penetrates the rising wall 11, and has a drainage groove 12 and a space 5 in the double wall. To communicate.
【０００３】上記のような従来のマットスラブの基礎構
造は、全体に一様な接地圧をうけ、その接地圧は構造物
重量が大きくなるに従って大きくなり、マットスラブを
厚くする必要がある。このためにコンクリートおよび鉄
筋の使用量が嵩みコスト高となった。この様な欠点を解
消する手段として、図５のように、従来の地下構造物基
礎のマットスラブ１の下面にクッション材１３を介在さ
せてマットスラブ１に作用する接地圧を制御・調整する
構造がある。[0003] The basic structure of the conventional mat slab as described above receives a uniform contact pressure as a whole, and the contact pressure increases as the weight of the structure increases, and the mat slab needs to be thickened. For this reason, the amount of concrete and reinforcing steel used increased and the cost increased. As a means to solve such drawbacks, as in FIG. 5, the conventional underground structures group
There is a structure for controlling and adjusting the ground pressure acting on the mat slab 1 by interposing a cushion material 13 on the lower surface of the foundation mat slab 1.
【０００４】しかし、図４，５のような従来の構造で
は、マットスラブを施工した後、上部スラブを構築する
までに長時間を要し、工期が長くなり、その間、地下構
造物中に浸入する地下水等がマットスラブ上に滞留し、
施工環境が低下する欠点があった。However, in the conventional structure as shown in FIGS. 4 and 5, after the mat slab is constructed, it takes a long time to construct the upper slab, and the construction period is long. Underground water stays on the mat slab,
There was a disadvantage that the construction environment was reduced.
【０００５】この発明は上記問題点に着目しなされたも
のである。その目的は工期の短縮、工費の節減を図るこ
とができ、かつ、接地圧緩衝機能及び排水機能を持った
キャビティーマットスラブを提案するにある。The present invention has been made in view of the above problems. An object of the present invention is to propose a cavity mat slab which can shorten a construction period and a construction cost, and has a function of buffering a contact pressure and a drainage function.
【０００６】[0006]
【課題を解決するための手段】この発明のキャビティー
マットスラブは、支持地盤上に、防湿シートを敷設し、
捨てコンクリートを打設した後、その上に、下面に脚部
が突出し緩衝性を持つ平板、および、その平板を取囲む
コンクリート堰止め用ブロックを敷設し、その上に、コ
ンクリートを打設して構築され、マットスラブ下面に排
水空間を有し、接地圧緩衝性を備えていることを特徴と
する。 The cavity mat slab of the present invention has a moisture-proof sheet laid on a supporting ground,
After placing the discarded concrete, place the legs on
Has a protruding and shock-absorbing flat plate, and surrounds the flat plate
Laying concrete blocking blocks,
It is constructed by casting concrete and discharged to the bottom of the mat slab.
It has a water space and has a ground pressure buffering property .
【０００７】[0007]
【実施例】以下、図１に示すキャビティーマットスラブ
の施工実施例を挙げ説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the construction of the cavity mat slab shown in FIG. 1 will be described below.
【０００８】地下構造物基礎のマットスラブを構築すべ
き掘削した根切り底に、防湿シート１４を敷設し、その
上に墨出しおよびレベリングのための捨てコンクリート
９を打設する。捨てコンクリート９には、マイナス側に
設けた集水枡１５に水が誘導されるように、水勾配をと
る。この捨てコンクリート９上に、コンクリート堰止め
用ブロック１６を敷並べ、この敷並べられたコンクリー
ト堰止め用ブロック１６で囲まれた内部に、図２，３に
示す発泡ポリスチレン製の平板１７の下面に脚部１８が
突設してある緩衝性をもった捨型枠１９を敷並べ、所定
の位置に通水管１０を配設した後、コンクリートを打設
してキャビティーマットスラブ２０を構築する。[0008] excavated Excavation bottom should build mat slab of underground structures foundation, laying the moisture-proof sheet 14, for pouring the discarded concrete 9 for the marking and leveling on it. The waste concrete 9 has a water gradient so that water is guided to the water collecting basin 15 provided on the minus side. On this discarded concrete 9, concrete blocking blocks 16 are laid, and the concrete
In the interior surrounded by the block 16 for damming, a buffering disposable frame 19 having legs 18 projecting from the lower surface of a flat plate 17 made of expanded polystyrene shown in FIGS. After arranging the water pipe 10 at a predetermined position, concrete is cast to construct the cavity mat slab 20.
【０００９】この様に構築してなるキャビティーマット
スラブ２０は、マットスラブ１の下面と捨てコンクリー
ト９との間に、脚部１８で支えられた排水用の空間５が
形成され、同時に緩衝性をもったポリスチレン製の捨型
枠の介在により、マットスラブに作用する接地圧の緩衝
機能が付与される。In the cavity mat slab 20 constructed in this manner, the drainage space 5 supported by the legs 18 is formed between the lower surface of the mat slab 1 and the abandoned concrete 9, and at the same time, the cushioning property is improved. With the interposition of the polystyrene frame having the shape, a function of buffering the ground pressure acting on the mat slab is provided.
【００１０】[0010]
【発明の効果】この発明は以下の効果を奏する。The present invention has the following effects.
【００１１】従来の地下構造物基礎のように、上部スラ
ブを必要とせず、一度の施工でマットスラブの下面に排
水空間と接地緩衝機能をもったキャビティーマットスラ
ブを構築できる。また、従来の基礎構造に比べ、捨型枠
および上部スラブの厚さに相当する厚さを薄くできるの
で、掘削深さを浅くできる。従って工期の短縮、工費の
節減を達成できる。Unlike a conventional underground structure foundation , a cavity mat slab having a drainage space and a grounding buffer function can be constructed on the lower surface of the mat slab in one operation without the need for an upper slab. In addition, since the thickness corresponding to the thickness of the discarded formwork and the upper slab can be reduced as compared with the conventional foundation structure, the excavation depth can be reduced. Therefore, it is possible to shorten the construction period and reduce the construction cost.
【図１】実施例のキャビティーマットスラブの一部断面
で示す斜視図である。FIG. 1 is a perspective view showing a partial cross section of a cavity mat slab of an embodiment.
【図２】実施例の捨型枠の側面図である。FIG. 2 is a side view of the discarded formwork of the embodiment.
【図３】実施例の捨型枠の下面からみた平面図である。FIG. 3 is a plan view as seen from the lower surface of the discarding frame of the embodiment.
【図４】従来の地下構造物底部の一部断面で示す斜視図
である。FIG. 4 is a perspective view showing a partial cross section of a bottom portion of a conventional underground structure.
【図５】クッション材を介在させて接地圧を制御した従
来の地下構造物基礎の一部断面で示す斜視図である。FIG. 5 is a perspective view showing a partial cross section of a conventional underground structure foundation in which the contact pressure is controlled by interposing a cushion material.
１…マットスラブ、２…捨型枠、３…脚部、４…上部ス
ラブ、５…排水空間、６…柱、７…コンクリートブロッ
ク二重壁、８…壁、９…捨てコンクリート、１０…通水
管、１１…立上り壁、１２…排水溝、１３…クッション
材、１４…防湿シート、１５…集水枡、１６…堰止め用
ブロック、１７…平板、１８…脚部、１９…緩衝性捨型
枠、２０…キャビティーマットスラブ。DESCRIPTION OF SYMBOLS 1 ... Mat slab, 2 ... Disposal form, 3 ... Leg, 4 ... Upper slab, 5 ... Drainage space, 6 ... Column, 7 ... Double wall of concrete block, 8 ... Wall, 9 ... Discard concrete, 10 ... Through Water pipe, 11: rising wall, 12: drain groove, 13: cushion material, 14: moisture-proof sheet, 15: water collecting basin, 16: blocking block, 17: flat plate, 18: leg, 19: cushioning type Frame, 20 ... Cavity mat slab.
フロントページの続き (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 (56)参考文献 実開 平３−13344（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) E02D 29/00 Continuation of the front page (72) Inventor Yasuo Okawa 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Yasuo Komatsu 2-26-6-404 Kitamachi, Nerima-ku, Tokyo (72) Inventor Katsutoshi Nakamura 1000 Kawajiri-cho, Yokkaichi, Mie Prefecture Inside Mitsubishi Yuka Birdishe Co., Ltd. (56) References Japanese Utility Model 3-13344 (JP, U) (58) Field surveyed (Int. Cl. 6 , DB name) ) E02D 29/00
Claims (1)
てコンクリートを打設した後、その上に、下面に脚部が
突出し緩衝性を持つ平板、および、その平板を取囲むコ
ンクリート堰止め用ブロックを敷設し、その上に、コン
クリートを打設して構築してなり、マットスラブ下面に
排水空間を有し、接地圧緩衝性を備えた地下構造物基礎
のキャビティーマットスラブ。 (1) A moisture-proof sheet is laid on a supporting ground and discarded.
After casting concrete, the legs on the bottom
A flat plate with an overhanging buffer and a
Laying concrete blocking blocks,
It is constructed by casting cleats and on the lower surface of the mat slab
Underground structure foundation with drainage space and shock-absorbing pressure
Cavity mat slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4211611A JP2963281B2 (en) | 1992-08-07 | 1992-08-07 | Cavity mat slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4211611A JP2963281B2 (en) | 1992-08-07 | 1992-08-07 | Cavity mat slab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0657766A JPH0657766A (en) | 1994-03-01 |
| JP2963281B2 true JP2963281B2 (en) | 1999-10-18 |
Family
ID=16608631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4211611A Expired - Fee Related JP2963281B2 (en) | 1992-08-07 | 1992-08-07 | Cavity mat slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2963281B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7362447B2 (en) * | 2019-11-25 | 2023-10-17 | 株式会社竹中工務店 | How to build buildings |
-
1992
- 1992-08-07 JP JP4211611A patent/JP2963281B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0657766A (en) | 1994-03-01 |
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