JPS5936058B2 - How to construct a structure using underground continuous walls - Google Patents
How to construct a structure using underground continuous wallsInfo
- Publication number
- JPS5936058B2 JPS5936058B2 JP16767581A JP16767581A JPS5936058B2 JP S5936058 B2 JPS5936058 B2 JP S5936058B2 JP 16767581 A JP16767581 A JP 16767581A JP 16767581 A JP16767581 A JP 16767581A JP S5936058 B2 JPS5936058 B2 JP S5936058B2
- Authority
- JP
- Japan
- Prior art keywords
- underground continuous
- continuous wall
- drain
- steel
- constructing
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/04—Flat foundations in water or on quicksand
- E02D27/06—Floating caisson foundations
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Description
【発明の詳細な説明】
この発明は構造物の施工時は止水性を有し、構造物完成
時は透水性を有するドレーン層を設けた地下連続壁を利
用した構造物の構築方法に関するものである。[Detailed Description of the Invention] This invention relates to a method of constructing a structure using an underground continuous wall provided with a drain layer that is watertight when the structure is constructed and has water permeability when the structure is completed. be.
下水処理場における諸施設など一般に地下に構築される
構造物は地下水面以下に構築される。Structures built underground, such as various facilities in sewage treatment plants, are generally built below the groundwater table.
従来、これら諸施設の設計についてみると、例えばその
基礎杭の設計にみられるように地下水を有効に利用した
設計がなされていない。Conventionally, when looking at the designs of these facilities, they have not been designed to utilize groundwater effectively, as seen, for example, in the design of their foundation piles.
これは掘削に使用する土留壁が施工中遮水構造を必要と
することや、構造物底盤付近に粘性土層など不透水層が
あり、確実に底盤に地下水による揚圧力を期待できない
ためである。This is because the earth retaining walls used for excavation require a water-tight structure during construction, and because there is an impermeable layer such as a clayey soil layer near the base of the structure, it is not possible to reliably expect uplift pressure from groundwater to reach the base. .
基礎杭について言えば地下水による揚圧力をフルに考え
れば従来に比べ太幅に基礎杭を減少させることができる
。Regarding foundation piles, if the uplift pressure caused by groundwater is taken into account, it is possible to reduce the width of the foundation piles to a greater extent than in the past.
このため、この発明では土留壁としての地下連続壁にド
レーン層を設け、施工中は止水構造、構造物完成後は透
水性土留構造となる地下連続壁を考えた。For this reason, in this invention, a drain layer is provided in the underground continuous wall as an earth retaining wall, and an underground continuous wall is designed to have a water-stop structure during construction and a water-permeable earth retaining structure after the structure is completed.
すなわち、この発明の工法は構築すべき構造物の周囲に
地下連続壁を施工して内部掘削を行なう地下連続壁を利
用した構造物の構築方法において、まず掘削溝に所定間
隔をおいて中空の鋼材を建込み、前記鋼材内部にドレー
ン材を充填するとともに各鋼材間に硬化材を打設してＩ
Ｌ水性を有する地下連続壁を施工し、止水した状態で地
下連続壁で囲まれる内部の掘削を行ない、この掘削底部
にドレーン材を敷設してなるドレーン層を設け、このド
レーン層上に構造物本体の施工を行なった後、前記鋼材
を引抜き、地下連続壁に前記鋼材内部に充填していたド
レーン材からなるドレーン層を形成し構造物本体下部の
ドレーン層と連通させることを特徴とする。In other words, the construction method of the present invention is a method for constructing a structure using an underground continuous wall in which an underground continuous wall is constructed around the structure to be constructed and internal excavation is performed. The steel materials are erected, drain material is filled inside the steel materials, and hardened material is placed between each steel material.
Construct an underground continuous wall with water resistance, excavate the interior surrounded by the underground continuous wall with water stopped, install a drain layer by laying drain material at the bottom of this excavation, and build a structure on top of this drain layer. After the construction of the structure body, the steel material is pulled out, and a drain layer made of the drain material filled inside the steel material is formed in the underground continuous wall, and the drain layer is communicated with the drain layer at the bottom of the structure body. .
以下、この発明を図示した実施例に基づいて説明する。The present invention will be described below based on illustrated embodiments.
第１図は従来の地下連続壁１による土留めの様子を示し
ている。FIG. 1 shows the state of earth retention using a conventional underground continuous wall 1.
地下水位ａ以下に構造物本体２を構築するため、まず止
水性を有する地下連続壁１を施工した後、内部掘削およ
び構造物本体２の構築を行なう。In order to construct the structure main body 2 below the groundwater level a, first, a water-stopping underground continuous wall 1 is constructed, and then internal excavation and construction of the structure main body 2 are performed.
この場合構造物本体２の底盤は粘性土層などの不透水層
３中に位置するため地下水による揚圧力を期待できず、
基礎杭５の本数の増加などで対処しなげればならない。In this case, since the bottom of the structure body 2 is located in an impermeable layer 3 such as a clayey soil layer, uplift pressure from groundwater cannot be expected.
This must be dealt with by increasing the number of foundation piles 5, etc.
これに対し第２図はこの発明の工法を利用した場合を示
したもので、施工中は止水構造の地下連続壁１を構造物
本体２地下部分の構築後透水性の構造とし、構造物本体
２の底盤部分に地下水による揚圧力が作用するようにし
ている。On the other hand, Fig. 2 shows the case where the construction method of the present invention is used. Lifting pressure from groundwater is applied to the bottom of the main body 2.
こＱ結果、設計において基礎杭５の削減等を図ることが
できる。As a result of this, it is possible to reduce the number of foundation piles 5 in the design.
第３図〜第６図はこの発明における地下連続壁１の施工
中および構造物本体２完成時の様子を示したもので、次
のような手順で作業が行なわれる。3 to 6 show the underground continuous wall 1 of the present invention during construction and when the structure main body 2 is completed, and the work is carried out in the following steps.
（１）構造物構築位置の周囲に掘削溝を設け、必要な鉄
筋、型鋼あるいはジヨイント材などを建込みコンクリー
ト、ソイルモルタルその他の硬化材を充填する。(1) An excavation trench is created around the location where the structure will be constructed, and the necessary reinforcing bars, shaped steel, or joint materials are placed and filled with concrete, soil mortar, or other hardening material.
溝壁安定のためには通常ベントナイト泥水等が用いられ
る。Bentonite mud is usually used to stabilize trench walls.
このとき掘削溝には同時に所定間隔をおいてボックス型
鋼６等の中空の鋼材を建込み、内部には砂利７等透水性
を有するドレーン材を充填しておく。At this time, hollow steel members such as box-shaped steel 6 are placed in the excavated trench at predetermined intervals, and the inside is filled with water-permeable drainage material such as gravel 7.
またボックス型鋼６は構造物本体２の完成後引抜きやす
いように予め減摩剤を塗布しておく。Further, the box-shaped steel 6 is coated with an anti-friction agent in advance so that it can be easily pulled out after the structure main body 2 is completed.
（２）硬化剤の硬化により第３図および第５図に示すよ
うな止水性を有する地下連続壁１が形成され、内部掘削
および構造物本体２の構築を行なう。(2) By curing the curing agent, an underground continuous wall 1 having water-stop properties as shown in FIGS. 3 and 5 is formed, and internal excavation and construction of the structure body 2 are performed.
なお構造物本体２のベースには砂第１８を敷いて構築す
る。Note that the base of the structure body 2 is constructed by laying sand No. 18.
（３）内部施工後前記ボックス型鋼６をジヤツキ等で引
抜く。(3) After internal construction, pull out the box-shaped steel 6 using jacks or the like.
その際ジェットにどでドレーン層となる砂利７の部分を
洗浄すれば確実なドレーンとなる。At this time, if the part of the gravel 7 that will become the drain layer is washed with a jet, a reliable drain can be obtained.
従って完成時においては透水層４の地下水が砂利７およ
び砂利８のドレーン層の存在により構造物本体２の底盤
に揚圧力として作用する。Therefore, at the time of completion, groundwater in the permeable layer 4 acts as an uplift force on the bottom of the structure body 2 due to the presence of the drainage layer of gravel 7 and gravel 8.
この発明は以上の構成からなり、地下連続壁を施工時は
土留壁兼止水壁として利用し内部施工を行ない、構造物
完成時は透水性を有する土留壁として利用することがで
きる。This invention has the above-mentioned configuration, and when the underground continuous wall is constructed, it can be used as an earth retaining wall and a water-stopping wall for internal construction, and when the structure is completed, it can be used as a water-permeable earth retaining wall.
従って下部が不透水層中にある構造物についても地下水
の揚圧力を有効に利用することができ、経済的な構造物
の構築が可能である。Therefore, even for a structure whose lower part is in an impermeable layer, the uplift pressure of groundwater can be effectively utilized, making it possible to construct an economical structure.
なおドレーン層部分の中空の鋼材は建込みに際し、減摩
剤を塗布しておくことにより地下連続壁の施工後容易に
引抜ける。Furthermore, if the hollow steel material in the drain layer section is coated with an anti-friction agent during construction, it can be easily pulled out after the underground continuous wall is constructed.
第１図は従来の土留構造を示す断面図、第２図はこの発
明における土留構造を示す断面図、第３図および第４図
はそれぞれ施工中および完成時の地下連続壁の横断面図
、第５図および第６図はそれぞれ施工中および完成時の
地下連続壁の斜視図である。
１・・・・・・地下連続壁、２・・・・・・構造物本体
、３・・・・・・不透水層、４・・・・・・透水層、５
・・・・・・基礎杭、６・・・・・・ボックス型鋼、７
・・・・・・砂利、８・・・・・・砂利。FIG. 1 is a sectional view showing a conventional earth retaining structure, FIG. 2 is a sectional view showing an earth retaining structure according to the present invention, and FIGS. 3 and 4 are cross sectional views of an underground continuous wall during construction and when completed, respectively. Figures 5 and 6 are perspective views of the underground continuous wall during construction and at completion, respectively. 1... Underground continuous wall, 2... Structure body, 3... Impermeable layer, 4... Permeable layer, 5
...Foundation pile, 6...Box type steel, 7
...Gravel, 8...Gravel.
Claims (1)
部掘削を行なう地下連続壁を利用した構造物の構築方法
において、まず掘削溝に所定間隔をおいて中空の鋼材を
建込み、前記鋼材内部にドレーン材を充填するとともに
各鋼材間に硬化材を打設して止水性を有する地下連続壁
を施工し、止水した状態で地下連続壁で囲まれる内部の
掘削を行ない、この掘削底部にドレーン材を敷設してな
るドレーン層を設け、このドレーン層−トに構造物本体
の施工を行なった後、前記鋼材を引抜き、地下連続壁に
前記鋼材内部に充填していたドレーン材からなるドレー
ン層を形成し構造物本体下部のドレーン層と連通させる
ことを特徴とする地下連続壁を利用した構造物の構築方
法。 ２ 鋼材はボックス型鋼である特許請求の範囲第１項記
載の地下連続壁を利用した構造物の構築方法。 ３ 鋼材には建込みに際し、予め減摩剤を塗布しておく
特許請求の範囲第１項または第２項記載の地下連続壁を
利用した構造物の構築方法。 ４ ドレーン材は砂利である特許請求の範囲第１項、第
２項または第３項記載の地下連続壁を利用した構造物の
構築方法。[Claims] 1. In a method for constructing a structure using an underground continuous wall in which an underground continuous wall is constructed around the structure to be constructed and internal excavation is carried out, first hollow A continuous underground wall with water-stop properties is constructed by erecting steel materials, filling the interior of the steel materials with drain material, and placing a hardening material between each steel material. After excavation is carried out, a drain layer is provided by laying drain material at the bottom of the excavation, and the main body of the structure is constructed on this drain layer, the steel material is pulled out and filled inside the steel material in the underground continuous wall. A method for constructing a structure using an underground continuous wall, characterized by forming a drain layer made of drain material that has been used for a long time, and communicating it with a drain layer at the bottom of the structure main body. 2. The method for constructing a structure using an underground continuous wall according to claim 1, wherein the steel material is box-shaped steel. 3. A method for constructing a structure using an underground continuous wall according to claim 1 or 2, wherein the steel materials are coated with an anti-friction agent in advance during construction. 4. The method for constructing a structure using an underground continuous wall according to claim 1, 2 or 3, wherein the drain material is gravel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16767581A JPS5936058B2 (en) | 1981-10-20 | 1981-10-20 | How to construct a structure using underground continuous walls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16767581A JPS5936058B2 (en) | 1981-10-20 | 1981-10-20 | How to construct a structure using underground continuous walls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5869923A JPS5869923A (en) | 1983-04-26 |
| JPS5936058B2 true JPS5936058B2 (en) | 1984-09-01 |
Family
ID=15854130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16767581A Expired JPS5936058B2 (en) | 1981-10-20 | 1981-10-20 | How to construct a structure using underground continuous walls |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5936058B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173763A (en) * | 1984-02-17 | 1985-09-07 | Pioneer Electronic Corp | Front loading disc player |
| JPS6157061A (en) * | 1984-08-28 | 1986-03-22 | Pioneer Electronic Corp | Front loading type disc player |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS611720A (en) * | 1984-06-12 | 1986-01-07 | Takenaka Komuten Co Ltd | Underground continuous wall |
| JPH01163315A (en) * | 1987-12-17 | 1989-06-27 | Taisei Corp | Continuous underground wall construction |
| NL2001295C2 (en) * | 2008-02-19 | 2009-08-20 | Dura Vermeer Business Dev B V | Method for manufacturing a structure. |
| JP6374736B2 (en) * | 2014-09-17 | 2018-08-15 | 大成建設株式会社 | Underground structure and construction method of underground structure |
-
1981
- 1981-10-20 JP JP16767581A patent/JPS5936058B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173763A (en) * | 1984-02-17 | 1985-09-07 | Pioneer Electronic Corp | Front loading disc player |
| JPS6157061A (en) * | 1984-08-28 | 1986-03-22 | Pioneer Electronic Corp | Front loading type disc player |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5869923A (en) | 1983-04-26 |
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