JP2688101B2 - Continuous underground wall - Google Patents
Continuous underground wallInfo
- Publication number
- JP2688101B2 JP2688101B2 JP2045749A JP4574990A JP2688101B2 JP 2688101 B2 JP2688101 B2 JP 2688101B2 JP 2045749 A JP2045749 A JP 2045749A JP 4574990 A JP4574990 A JP 4574990A JP 2688101 B2 JP2688101 B2 JP 2688101B2
- Authority
- JP
- Japan
- Prior art keywords
- underground wall
- continuous underground
- continuous
- wall
- section
- 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
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は曲げ応力があまり大きくない連続地中壁に係
るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a continuous underground wall in which bending stress is not so large.
（従来の技術） 従来、連続壁の施工に際しては、掘削機械を使用して
地盤（ａ）に溝孔を削孔し、同削孔部に充填した泥水に
よって掘削部壁の地山を安定させ、所要の幅で所要深度
まで掘削したのち、泥水中に鉄筋（ｂ）を挿入し、トレ
ミー管を介してコンクリート（ｃ）を打設して山止め用
地中連続壁（ｄ）を構築し、同地中連続壁（ｄ）で囲ま
れた地盤を所定のレベルまで掘削して、所要の地中構築
物を施工している。（第５図参照） （発明が解決しようとする課題） 前記従来の施工法においては、鉄筋挿入作業が難し
く、特に大深度の場合には精度上、問題が大きい。(Prior Art) Conventionally, when constructing a continuous wall, a drilling machine was used to drill a slot in the ground (a), and the mud water filled in the drilling portion stabilized the ground of the drilled wall. After excavating with a required width to a required depth, insert the reinforcing bar (b) into the muddy water, and place concrete (c) through the tremie pipe to construct the earth retaining wall (d) for earth retaining, The ground surrounded by the continuous underground wall (d) is excavated to a predetermined level to construct a required underground structure. (Refer to FIG. 5) (Problems to be Solved by the Invention) In the above-mentioned conventional construction method, it is difficult to insert the reinforcing bar, and particularly in the case of a large depth, there is a problem in accuracy.
また大深度になる程、鉄筋挿入時間が長くなる。 Also, the greater the depth, the longer the reinforcing bar insertion time.
本発明は前記従来技術の有する問題点に鑑みて提案さ
れたもので、その目的とする処は、鉄筋挿入作業が省略
され、施工性が向上され、工期が短縮された連続地中壁
を構成する点にある。The present invention has been proposed in view of the problems of the above-mentioned conventional technology, and the purpose thereof is to construct a continuous underground wall in which the work of inserting the reinforcing bar is omitted, the workability is improved, and the construction period is shortened. There is a point to do.
（課題を解決するための手段） 前記の目的を達成するため、本発明に係る連続地中壁
は、平断面形状が円形状または多角形状の閉鎖形となる
山止め用連続地中壁の構造部材を、フアイバーコンクリ
ートより構成したものである。(Means for Solving the Problems) In order to achieve the above-mentioned object, the continuous underground wall according to the present invention has a structure of a continuous earth underground wall for earth retaining which is a closed shape having a circular cross section or a polygonal cross section. The member is made of fiber concrete.
（作用） 本発明に係る連続地中壁は平断面形状が円形状、また
は多角形状の閉鎖形となっており、外周面から土圧がか
かるため、連続地中壁に働く曲げ応力はあまり大きくな
く、大半が圧縮応力となるので、同連続地中壁の構造部
材として、鉄筋コンクリートに代えてフアイバーコンク
リートを使用し、同フアイバーコンクリートの曲げ耐力
で対抗せしめるものである。(Operation) The continuous underground wall according to the present invention has a closed cross-section with a circular or polygonal plane cross section, and earth pressure is applied from the outer peripheral surface. Therefore, the bending stress acting on the continuous underground wall is too large. Since most of them have compressive stress, fiber concrete is used as a structural member of the continuous underground wall instead of reinforced concrete, and the bending strength of the fiber concrete is used to oppose it.
（実施例） 以下本発明を橋梁基礎構築のための連続地中壁に適用
した図示の実施例について説明する。(Example) Below, the example of illustration which applied this invention to the continuous underground wall for bridge foundation construction is demonstrated.
第１図及び第２図において、地盤（１）に公知の施工
機械によって、平断面が多角形、例えば８角形の山止め
用の連続地中壁（２）及び基礎杭（３）を構築したの
ち、前記山止め用の連続地中壁（２）で囲繞された地盤
（１）を所定レベルまで掘削して、公知の施工法によっ
て橋梁基礎（４）を施工する。In FIG. 1 and FIG. 2, a continuous ground wall (2) and a foundation pile (3) for a mountain stopper having a polygonal plane cross section, for example, an octagon, were constructed by a known construction machine for the ground (1). After that, the ground (1) surrounded by the continuous underground wall (2) for damming is excavated to a predetermined level, and the bridge foundation (4) is constructed by a known construction method.
而して前記山止め用連続地中壁（２）は平断面が閉鎖
形の多角形に形成され、外周面から土圧、水圧が作用す
るので、同土圧、水圧の大半が圧縮応力となり、比較的
小さい曲げ応力に対しては、前記連続地中壁（２）を従
来の鉄筋コンクリートに代えてフアイバーコンクリート
より構成したことによって、同フアイバーコンクリート
の曲げ耐力で対応せしめるものである。Since the earth retaining continuous underground wall (2) is formed into a polygonal shape having a closed cross section, and earth pressure and water pressure act from the outer peripheral surface, most of the earth pressure and water pressure become compressive stress. With respect to a relatively small bending stress, the continuous underground wall (2) is made of fiber concrete instead of conventional reinforced concrete, so that the bending strength of the fiber concrete can be dealt with.
従って前記実施例によれば、従来の如き鉄筋の挿入作
業時の煩雑な作業がなくなり、工期が著しく短縮される
ものである。Therefore, according to the above-mentioned embodiment, the complicated work of inserting the reinforcing bar as in the conventional case is eliminated, and the construction period is remarkably shortened.
なお必要に応じて前記多角形平断面の山止め用連続地
中壁（２）における多角形の各辺を構成するパネル部の
継手部には鋼材（５）を挿入する。If necessary, a steel material (5) is inserted into the joint portion of the panel portion forming each side of the polygon in the continuous earth retaining wall (2) having the polygonal flat cross section.
また地表部に近い部分において、地形、作用荷重等の
関係から偏圧が存在する場合、前記連続地中壁の上部に
鉄筋コンクリート構造を採用することも可能である。In addition, when a partial pressure exists due to the topography, acting load, etc., in the portion near the surface of the earth, it is also possible to adopt a reinforced concrete structure above the continuous underground wall.
なお圧縮応力が主体となる連続地中壁で構成された第
３図及び第４図に示す前記基礎杭（３）も、フアイバー
コンクリートを使用して、曲げ応力に対抗せしめるもの
である。The foundation pile (3) shown in FIG. 3 and FIG. 4, which is composed of a continuous underground wall mainly composed of compressive stress, also uses fiber concrete to resist bending stress.
（発明の効果） 本発明によれば前記したように、山止め用連続地中壁
を、外面部分から作用する土圧、水圧の大半が圧縮応力
となるように、平断面形状が円形状または多角形状の閉
鎖形となるように構成し、比較的小さい曲げ応力に対し
ては鉄筋コンクリートに代えてフアイバーコンクリート
の曲げ耐力で対応せしめることによって、鉄筋挿入作業
を省略し、施工性を向上し、工期を著しく短縮しうるも
のである。(Effects of the Invention) According to the present invention, as described above, the continuous earth wall for mountain stopper has a circular or flat cross section so that most of earth pressure and water pressure acting from the outer surface become compressive stress. By constructing a polygonal closed shape and responding to comparatively small bending stress with the bending strength of fiber concrete instead of reinforced concrete, the work of inserting the reinforcing bar can be omitted and the workability can be improved. Can be significantly shortened.
請求項２の発明は、基礎杭に使用される閉鎖形平断面
形状の連続地中壁の構造部材をフアイバコンクリートよ
り構成して、鉄筋挿入作業を省略し、作業性の向上と工
期の短縮を図ったものである。According to the invention of claim 2, the structural member of the continuous underground wall of the closed flat cross-section shape used for the foundation pile is made of fiber concrete, and the work of inserting the reinforcing bar is omitted to improve the workability and shorten the construction period. It is intended.
第１図は本発明に係る連続地中壁を橋梁基礎構築に適用
した実施例を示す縦断面図、第２図は山止め用連続地中
壁の平面図、第３図は基礎杭の平面図、第４図はその部
分拡大図、第５図は従来の連続地中壁を示す縦断面図で
ある。 （１）……地盤、（２）……山止め用連続地中壁、
（３）……基礎杭。FIG. 1 is a vertical cross-sectional view showing an embodiment in which a continuous underground wall according to the present invention is applied to construct a bridge foundation, FIG. 2 is a plan view of a continuous underground wall for earth retaining, and FIG. 3 is a plan view of a foundation pile. Fig. 4 and Fig. 4 are partially enlarged views thereof, and Fig. 5 is a vertical sectional view showing a conventional continuous underground wall. (1) …… Ground, (2) …… Continuous underground wall for mountain stop,
(3) …… Foundation pile.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 林 英雄 東京都渋谷区千駄ケ谷４丁目６番15号 フジタ工業株式会社内 (56)参考文献 特開 昭59−15119（ＪＰ，Ａ) 特開 昭63−247423（ＪＰ，Ａ) 特開 昭54−50116（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Hayashi 4-6-15 Sendagaya, Shibuya-ku, Tokyo Within Fujita Industry Co., Ltd. (56) References JP-A-59-15119 (JP, A) JP-A-63 -247423 (JP, A) JP-A-54-50116 (JP, A)
Claims (2)
形となる山止め用連続地中壁の構造部材を、フアイバー
コンクリートより構成してなることを特徴とする連続地
中壁。1. A continuous underground wall comprising fiber-concrete as a structural member of a continuous earth retaining wall for a mountain stopper having a circular or polygonal closed cross section.
続地中壁の構造部材を、フアイバーコンクリートより構
成してなることを特徴とする連続地中壁。2. A continuous underground wall, characterized in that the structural member of the closed underground cross-section continuous underground wall used for the foundation pile is made of fiber concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2045749A JP2688101B2 (en) | 1990-02-28 | 1990-02-28 | Continuous underground wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2045749A JP2688101B2 (en) | 1990-02-28 | 1990-02-28 | Continuous underground wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03250112A JPH03250112A (en) | 1991-11-07 |
| JP2688101B2 true JP2688101B2 (en) | 1997-12-08 |
Family
ID=12727956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2045749A Expired - Fee Related JP2688101B2 (en) | 1990-02-28 | 1990-02-28 | Continuous underground wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2688101B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258520A (en) * | 2019-06-20 | 2019-09-20 | 中铁十局集团西北工程有限公司 | A kind of construction method of underground continuous wall under the operating condition suitable for low clearance |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5450116A (en) * | 1977-09-28 | 1979-04-19 | Fudo Giken | Method of soil stabilizing treating constrution |
| JPS5915119A (en) * | 1982-07-16 | 1984-01-26 | Kajima Corp | Construction of wall type underground structure |
-
1990
- 1990-02-28 JP JP2045749A patent/JP2688101B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03250112A (en) | 1991-11-07 |
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