JPH03217515A - Construction of sheathing and cut-off wall - Google Patents
Construction of sheathing and cut-off wallInfo
- Publication number
- JPH03217515A JPH03217515A JP980390A JP980390A JPH03217515A JP H03217515 A JPH03217515 A JP H03217515A JP 980390 A JP980390 A JP 980390A JP 980390 A JP980390 A JP 980390A JP H03217515 A JPH03217515 A JP H03217515A
- Authority
- JP
- Japan
- Prior art keywords
- constructed
- piles
- ground
- underground
- vertical holes
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title description 15
- 239000008267 milk Substances 0.000 claims abstract description 18
- 210000004080 milk Anatomy 0.000 claims abstract description 18
- 235000013336 milk Nutrition 0.000 claims abstract description 18
- 239000004568 cement Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 9
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 7
- 239000000440 bentonite Substances 0.000 claims abstract description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002689 soil Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000013019 agitation Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野]
この発明は土留め止水壁の施工方法に関するものである
。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method of constructing an earth retaining water-stop wall.
(従来の技術及び解決しようとする課題〕従来、土留め
止水璧の施工方法として三軸オカーを使用したいわゆる
SMW工法が一般に知られている。(Prior Art and Problems to Be Solved) Conventionally, the so-called SMW construction method using a triaxial drill is generally known as a construction method for earth retaining and water stop walls.
この種の施工方法は三軸オーガーを使用して地盤に縦孔
を削孔し、続いて当該縦孔内にベントナイトセメントミ
ルクを注入撹拌してソイルモルタルを作り、その中にH
鋼等の地中杭を立て込んで土留め壁を連続的に施工する
ものである。This type of construction method uses a triaxial auger to drill a vertical hole in the ground, then injects and stirs bentonite cement milk into the vertical hole to create a soil mortar.
An earth retaining wall is constructed continuously using underground piles made of steel or other materials.
ところで、この施工方法を橋桁の下等のような上に障害
物がある場所で行おうとすると、大型三軸オーガーの使
用が困難となる。By the way, if this construction method is attempted in a place where there are obstacles above, such as under a bridge girder, it will be difficult to use a large three-shaft auger.
この為、小型の三軸オ−ガー機を使用せざるを得す、ま
た土留壁が深い場合には土留の深さに応してオーガーを
適宜継ぎ足す必要かあり、さらに、ガード下等の作業は
列車の往来のない夜間帯を利用して行う必要がある為、
作業性が著しく低下し、一区画の施工が数日に及ぶこと
がよくある。For this reason, it is necessary to use a small three-shaft auger machine, and if the retaining wall is deep, it is necessary to add more augers depending on the depth of the retaining wall. The work must be carried out at night when there is no train traffic, so
Work efficiency is significantly reduced, and construction of a single section often takes several days.
ところが、この施工にはヘントナイト泥水として比較的
硬化の早いベントナイトセメントミルクが使用される為
、施工が数日にも及ぶと地中杭の立て込みが出来なくな
ってしまうことがある。However, because bentonite cement milk, which hardens relatively quickly, is used in this construction, it may become impossible to drive underground piles if the construction lasts several days.
この発明はこのような前記従来の課題を解消する為に提
案されたもので、地盤中の縦孔にヘントナイトミルク製
造後、数日経過してもH形鋼等の地中杭をM無く立て込
むことが可能な土留め止水壁の施工方法を提供すること
を目的とするものである。This invention was proposed in order to solve the above-mentioned conventional problems, and it is possible to install underground piles such as H-section steel without M even after several days have passed after producing hentonite milk in a vertical hole in the ground. The purpose of the present invention is to provide a construction method for an earth-retaining water-stop wall that can be built up.
この発明は土留め止水壁の施工方法に関するもので、地
盤中に縦孔を削孔し、続いて当該縦孔内にヘントナイト
ミルクを注入攪拌して泥土柱を施工し、続いて前記縦孔
内に複数本の地中杭を立て込み、続いて前記地中杭間に
セメントミルクを注入攪拌してソイルモルタル柱を施工
することにより前記目的を達成するものである。This invention relates to a method for constructing an earth retaining water cutoff wall, in which a vertical hole is drilled in the ground, then hentonite milk is poured into the vertical hole and stirred to construct a mud pillar, and then a mud column is constructed in the vertical hole. The above object is achieved by driving a plurality of underground piles into the hole, then pouring and stirring cement milk between the underground piles and constructing a soil mortar column.
〔実施例]
以下、この発明を図示する一実施例に基づいて説明する
。[Example] The present invention will be described below based on an illustrative example.
:軸オーガーによって地盤中に図のように紀孔1、2、
3をこの順序で削孔する。: Holes 1, 2, and 2 are drilled into the ground by the shaft auger as shown in the figure.
Drill holes 3 in this order.
かかる場合、削孔及びミキシングに用いる注入材には比
較的硬化の遅いベントナイトミルクを使用する。In such cases, bentonite milk, which hardens relatively slowly, is used as the injection material for drilling and mixing.
尚、ヘントナイトミルクは工事日程に応して、材料の調
合を適当に変えることにより硬化時間を調整するものと
する。The curing time of the hentonite milk shall be adjusted by appropriately changing the mixture of materials according to the construction schedule.
縦孔3の削孔が終了したら、縦孔1、2、3に1つおき
乃至2つおきに地中杭4,4を立て込む。After drilling of the vertical holes 3 is completed, underground piles 4, 4 are driven into every other or every two vertical holes 1, 2, and 3.
尚、地中杭4には原則としてH形鋼を使用するものとす
るが、ほかにI形鋼を使用しても良い。In principle, H-section steel is used for the underground pile 4, but I-section steel may also be used.
また、地中杭4の設置間隔は土留め止水壁の規模によっ
て異なるが、深くて軟弱地盤の場合には設置間隔を狭く
且つ多く立て込むことにより強度を高め、逆に浅くて硬
質地盤の場合には設置間隔を広く且つ少なめに立て込む
ことにより材料の節約を回るものとる。In addition, the installation interval of the underground piles 4 varies depending on the scale of the earth retaining water cutoff wall, but in the case of deep and soft ground, the strength is increased by narrowing the installation interval and increasing the number of installations, and conversely, in the case of shallow and hard ground In some cases, it is possible to save material by widening the installation interval and making the installation space a little smaller.
地中杭4の立て込みが終了したら紹孔1、2及び3に立
て込まれた地中杭4と4との間にボノングマシンを用い
て注入材にセメントミルクを用いた高圧ジェット撹拌工
法によってモルタル抗5を施工する。After the installation of the underground piles 4 is completed, mortar is placed between the underground piles 4 and 4 installed in the introduction holes 1, 2, and 3 using a Bonong machine using a high-pressure jet stirring method using cement milk as the injection material. Construct resistor 5.
モルタル抗5は左右地中杭4,4の溝部4a,4 aに
確実に達するように施工する。The mortar shaft 5 is constructed so as to surely reach the grooves 4a, 4a of the left and right underground piles 4,4.
以下、同様な方法で地中連続壁を連続的に施工する。Thereafter, underground walls will be constructed continuously using the same method.
尚、注入材にはセメントミルク以外に薬液注入材の使用
が可能である。Note that, in addition to cement milk, a chemical injection material can be used as the injection material.
この発明は以上の構成からなるので以下の効果を有する
。Since the present invention has the above configuration, it has the following effects.
■ この発明に係る土留め止水璧の施工方法は基本的に
は従来のS M W工法と同しであるが、縦孔内Cこ最
初Cこ注入撹拌するのは、硬化の早いセメントミルクで
はなく、比較的硬化の遅いベントナイトミルクである為
、数日経過後でも縦孔内に地中杭を簡単に立て込むこと
ができる。■ The construction method of the earth retaining water stop wall according to this invention is basically the same as the conventional SMW construction method, but the method of injecting and stirring the fast-hardening cement milk into the vertical hole is C. Instead, bentonite milk hardens relatively slowly, so underground piles can be easily driven into vertical holes even after several days have passed.
また、地中杭の立て込み後、H形ロ間にセメントミルク
を用いた高圧ジェyトPA拌工法でソイルモルタル柱を
連続的に施工する為、止水施工も確実に行うことができ
る。In addition, after installing the underground piles, soil mortar columns are continuously constructed using the high-pressure jet PA stirring method using cement milk between the H-shaped holes, making it possible to reliably perform water-stop construction.
したがって、ガード下等といった、数日にまたがって施
工せざるを得ないような場所においても容易に施工する
ことができる。Therefore, the construction can be easily carried out even in places such as under a guard where construction must be carried out over several days.
図はこの発明にかかる土留め止水壁の施工方法を示す平
面図である。
1,2.3・・・樅孔、4・・・地中杭、5・・・モル
タル杭。The figure is a plan view showing a method of constructing an earth retaining water stop wall according to the present invention. 1, 2. 3...Fir hole, 4...Underground pile, 5...Mortar pile.
Claims (1)
トナイトミルクを注入撹拌して泥土柱を施工し、続いて
前記縦孔内に複数本の地中杭を立て込み、続いて前記地
中杭間にセメントミルクを注入撹拌してソイルモルタル
柱を施工することを特徴とする土留め止水壁の施工方法
。(1) Drill a vertical hole in the ground, then inject and stir bentonite milk into the vertical hole to construct a mud column, and then drive a plurality of underground piles into the vertical hole, A method for constructing an earth retaining and water-stopping wall, which comprises subsequently injecting and stirring cement milk between the underground piles and constructing soil mortar columns.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP980390A JPH03217515A (en) | 1990-01-19 | 1990-01-19 | Construction of sheathing and cut-off wall |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP980390A JPH03217515A (en) | 1990-01-19 | 1990-01-19 | Construction of sheathing and cut-off wall |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03217515A true JPH03217515A (en) | 1991-09-25 |
JPH0541766B2 JPH0541766B2 (en) | 1993-06-24 |
Family
ID=11730349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP980390A Granted JPH03217515A (en) | 1990-01-19 | 1990-01-19 | Construction of sheathing and cut-off wall |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03217515A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013127189A (en) * | 2011-12-19 | 2013-06-27 | Takenaka Komuten Co Ltd | Lattice ground improvement body, impervious wall, and construction method for the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS524846A (en) * | 1975-06-13 | 1977-01-14 | Hoechst Ag | Device for electrostatically charging recording material |
JPS59145821A (en) * | 1983-02-09 | 1984-08-21 | Sanwa Kizai Co Ltd | Method and apparatus for construction of pillar-row pile |
-
1990
- 1990-01-19 JP JP980390A patent/JPH03217515A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS524846A (en) * | 1975-06-13 | 1977-01-14 | Hoechst Ag | Device for electrostatically charging recording material |
JPS59145821A (en) * | 1983-02-09 | 1984-08-21 | Sanwa Kizai Co Ltd | Method and apparatus for construction of pillar-row pile |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013127189A (en) * | 2011-12-19 | 2013-06-27 | Takenaka Komuten Co Ltd | Lattice ground improvement body, impervious wall, and construction method for the same |
Also Published As
Publication number | Publication date |
---|---|
JPH0541766B2 (en) | 1993-06-24 |
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