JPS6331633B2 - - Google Patents
Info
- Publication number
- JPS6331633B2 JPS6331633B2 JP56118178A JP11817881A JPS6331633B2 JP S6331633 B2 JPS6331633 B2 JP S6331633B2 JP 56118178 A JP56118178 A JP 56118178A JP 11817881 A JP11817881 A JP 11817881A JP S6331633 B2 JPS6331633 B2 JP S6331633B2
- Authority
- JP
- Japan
- Prior art keywords
- caisson
- water
- storage tank
- tip
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000002689 soil Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 7
- 239000003673 groundwater Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【発明の詳細な説明】
本発明は、LNG等の地下式貯槽（所謂地下タ
ンク）の構築工法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction method for an underground storage tank (so-called underground tank) for LNG or the like.
大きな地下式貯槽を構築する場合、地下水の問
題があることから、従来においては第１図に示す
ように、貯槽構築箇所の周囲に不透水層ａに到達
するように止水壁ｂを打ち込んで内部に入る地下
水を止め、止水壁内の地下水はデイープウエルｃ
を利用して揚水し、止水壁ｂ内をドライな状態に
して穴を掘り、この穴内に貯槽躯体ｄを構築する
という手段がとられている。 When constructing a large underground storage tank, there is a problem with groundwater, so in the past, as shown in Figure 1, a water stop wall b was built around the tank construction site to reach the impermeable layer a. Stops the groundwater entering the interior, and drains the groundwater inside the water-stop wall into a deep well c.
The method is to pump water using water, keep the inside of the water stop wall b in a dry state, dig a hole, and construct the storage tank frame d in this hole.
しかし、上記のように止水壁ｂを利用して地下
水を止め、デイープウエルｃで揚水しながらドラ
イな状態で貯槽躯体を構築するようにすると、貯
槽躯体を構築するために多くの時間と経費がかか
るという問題がある。本発明は、斯かる点に鑑み
て提案されるもので、短かい工期で低コストによ
り構築を行なうことのできる地下式貯槽の構築工
法を提案するのが目的である。 However, if the water stop wall b is used to stop the groundwater and the deep well c is used to pump up the water while constructing the storage tank frame in a dry state as described above, it will take a lot of time and money to construct the storage tank frame. There is a problem that it takes The present invention has been proposed in view of these points, and an object of the present invention is to propose a construction method for an underground storage tank that can be constructed in a short construction period and at low cost.
以下に本発明の構成を詳記する。 The configuration of the present invention will be described in detail below.
ケーソンの先端にウオータージエツトノズルを
取り付け、このウオータージエツトノズルから水
を噴射し、この噴射力によりケーソンの先端地盤
を掘削してこの掘削した溝内にケーソンを所定の
深さまで沈下させ、次に、このケーソンで囲まれ
た中の土を排土し、この排土終了後にケーソン内
底部に配筋を行ない、ここにコンクリートを打設
して底盤を構築することにより貯槽躯体を構成
し、次に、貯槽躯体内にある水の排水を行なつて
からこの貯槽躯体内にタンクを構築する地下式貯
槽の構築方法。 A water jet nozzle is attached to the tip of the caisson, water is injected from the water jet nozzle, and the ground at the tip of the caisson is excavated using the force of this injection, and the caisson is lowered into the excavated trench to a predetermined depth. Next, the soil surrounded by this caisson is removed, and after this removal, reinforcement is placed at the inner bottom of the caisson, and concrete is poured here to construct the bottom plate, thereby constructing the storage tank frame. Next, there is a method for constructing an underground storage tank, in which a tank is constructed within the storage tank structure after draining the water inside the storage tank structure.
実施例
以下第２，３図に基づいて本発明の実施例を詳
記する。Embodiments Hereinafter, embodiments of the present invention will be described in detail based on FIGS. 2 and 3.
先ず、貯槽躯体の側壁となる円筒形のケーソン
１の先端２を鋭角に形成し、この先端２にウオー
タージエツトノズル３を取り付け、ウオータージ
エツトノズル３にはケーソン１内のパイプ４を経
由して圧水が供給されるようにする。 First, the tip 2 of the cylindrical caisson 1 that will become the side wall of the storage tank body is formed at an acute angle, and the water jet nozzle 3 is attached to the tip 2. so that pressurized water is supplied.
上記ケーソン１を所定の位置に置き、パイプ４
からウオータージエツトノズル３に対してウオー
タージエツトを供給して噴出させると、この噴出
エネルギーにより地盤が掘削され、溝となり、ケ
ーソン１はこの溝に沿つて自重により沈下して行
く。 Place the caisson 1 in place and pipe 4
When waterjet is supplied to the waterjet nozzle 3 and ejected, the ground is excavated by the ejection energy to form a groove, and the caisson 1 sinks along this groove due to its own weight.
なお、ケーソン１は原理的には自重で溝内に沈
下するが、必要に応じてジヤツキを使用する。そ
して、沈下が進行したなら次のケーソン１′を継
ぎ足して所定の深さまでケーソン１を沈下させ
る。 In principle, the caisson 1 sinks into the groove under its own weight, but jacks may be used if necessary. When the sinking progresses, the next caisson 1' is added to sink the caisson 1 to a predetermined depth.
このようにして、所定の深さまでケーソン１，
１′を沈下させたなら、ウオータージエツトを止
めてケーソン１，１′で囲まれた中から土を排土
する。この排土に際しては、ケーソン１，１′内
には先ほどのウオーターヅエツト水が溜つている
が、構わずグラブ或いはポンプ等を利用して排土
を行なう。 In this way, the caisson 1,
Once 1' is settled, the water jet is stopped and the soil is removed from the area surrounded by caissons 1 and 1'. At the time of this soil removal, although the aforementioned water waste remains in the caissons 1 and 1', a grab or a pump or the like is used to remove the soil.
ケーソン１，１′内からの排土が終了したなら、
次にケーソン１，１′内の底部に配筋を行ない、
これに水中コンクリートを打設してケーソン１，
１′内底部に底盤５を構築する。なお、あらかじ
めケーソン１の先端２に鉄筋６を埋め込んでおく
ことにより、前記底盤５とケーソン１の先端２と
の結合は強固となる。 Once the earth has been removed from inside caissons 1 and 1',
Next, reinforcement is placed at the bottom of the caissons 1 and 1'.
Caisson 1 was constructed by pouring underwater concrete on this.
A bottom plate 5 is constructed at the inner bottom of 1'. Note that by embedding reinforcing bars 6 in the tip 2 of the caisson 1 in advance, the connection between the bottom plate 5 and the tip 2 of the caisson 1 becomes strong.
上記のようにして貯槽躯体が出来上つたなら、
内部から揚水ポンプを利用して排水を行ない、そ
の後躯体内にタンクを構築する。 Once the storage tank frame is completed as described above,
Water is drained from inside using a water pump, and then a tank is constructed within the structure.
本発明は以上のように、ケーソンの先端からウ
オータージエツトを噴出させ、この噴出エネルギ
ーにより地盤を掘削して溝をつくり、この溝内に
ケーソンを沈下させ、所定の深さに到達したなら
内部から排土し、底盤構築後に排水して躯体内に
タンクを構築するので、従来のように止水壁を利
用して止水を図り、デイープウエルを利用して揚
水を行なうという必要がない。 As described above, the present invention ejects a water jet from the tip of a caisson, uses this ejected energy to excavate the ground to create a groove, sinks the caisson into this groove, and when it reaches a predetermined depth, the inside Since the earth is removed from the ground, the water is drained after the base is constructed, and a tank is constructed within the frame, there is no need to use a water stop wall to stop water or use a deep well to pump water, as in the past.
よつて、止水壁とデイープウエル構築に要する
工期と経費の削減を図ることができる。 Therefore, it is possible to reduce the construction period and costs required for constructing a water stop wall and a deep well.
第１図は従来における貯槽躯体工事例を示す説
明図、第２，３図は本発明工法を示す説明図であ
る。
１……ケーソン、３……ウオータージエツトノ
ズル、５……底盤。
FIG. 1 is an explanatory diagram showing an example of conventional construction of a storage tank frame, and FIGS. 2 and 3 are explanatory diagrams showing the construction method of the present invention. 1...Caisson, 3...Water jet nozzle, 5...Bottom plate.
Claims (1)
を取り付け、このウオータージエツトノズルから
水を噴射し、この噴射力によりケーソンの先端地
盤を掘削してこの掘削した溝内にケーソンを所定
の深さまで沈下させ、次に、このケーソンで囲ま
れた中の土を排土し、この排土終了後にケーソン
内底部に配筋を行ない、ここにコンクリートを打
設して底盤を構築することにより貯槽躯体を構成
し、次に、貯槽躯体内にある水の排水を行なつて
からこの貯槽躯体内にタンクを構築する地下式貯
槽の構築工法。1. Attach a water jet nozzle to the tip of the caisson, inject water from the water jet nozzle, use this injection force to excavate the ground at the tip of the caisson, and sink the caisson into the excavated trench to a predetermined depth; Next, the soil surrounded by this caisson is removed, and after this removal, reinforcement is placed at the inner bottom of the caisson, and concrete is poured here to construct the bottom plate, thereby constructing the storage tank frame. , Next, there is a method for constructing an underground storage tank, in which water in the storage tank structure is drained, and then a tank is constructed within the storage tank structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56118178A JPS5820870A (en) | 1981-07-28 | 1981-07-28 | Method of constructing underground storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56118178A JPS5820870A (en) | 1981-07-28 | 1981-07-28 | Method of constructing underground storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5820870A JPS5820870A (en) | 1983-02-07 |
| JPS6331633B2 true JPS6331633B2 (en) | 1988-06-24 |
Family
ID=14730061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56118178A Granted JPS5820870A (en) | 1981-07-28 | 1981-07-28 | Method of constructing underground storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5820870A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02244476A (en) * | 1989-02-22 | 1990-09-28 | Nichimen Denshi R & D Kk | Radio frequency broadcast signal generating method and its recorder |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2809105B2 (en) * | 1994-06-22 | 1998-10-08 | 鹿島建設株式会社 | How to build an underground tank |
| GB2316767B (en) * | 1995-06-01 | 1999-09-29 | Joshua David Silver | An optical apparatus and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55132870A (en) * | 1979-04-02 | 1980-10-16 | Mitsubishi Heavy Ind Ltd | Method of sequentially constructing underground tank |
-
1981
- 1981-07-28 JP JP56118178A patent/JPS5820870A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55132870A (en) * | 1979-04-02 | 1980-10-16 | Mitsubishi Heavy Ind Ltd | Method of sequentially constructing underground tank |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02244476A (en) * | 1989-02-22 | 1990-09-28 | Nichimen Denshi R & D Kk | Radio frequency broadcast signal generating method and its recorder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5820870A (en) | 1983-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101260664A (en) | Soft soil foundation large scale steel float lock head construction method | |
| JPS6331633B2 (en) | ||
| JP4011209B2 (en) | Construction method of shaft | |
| JP2000130065A (en) | Construction method for vertical shaft | |
| JP4066340B2 (en) | Ground improvement method | |
| JP2000130066A (en) | Construction method for vertical shaft | |
| JP2809105B2 (en) | How to build an underground tank | |
| JPS5936058B2 (en) | How to construct a structure using underground continuous walls | |
| JPS6357566B2 (en) | ||
| JPH04108910A (en) | Method for processing pile head of sunk concrete pile | |
| JPH0525828A (en) | Final excavation level lift-preventive construction | |
| JPH03281829A (en) | Construction method of underground structure | |
| JP3387398B2 (en) | How to penetrate caisson foundation | |
| JPS57155432A (en) | Method of erecting construction of existing pile | |
| JP2612669B2 (en) | Underground tank construction method and underground tank constructed thereby | |
| JPH02311620A (en) | Underground structure construction method | |
| JP2784314B2 (en) | How to set up an open caisson | |
| JPH07216903A (en) | Bulkhead caisson and construction method of bulkhead | |
| JPH06336721A (en) | Prevention of displacement of ground | |
| JP2526333B2 (en) | How to build a vertical shaft | |
| JPH0615773B2 (en) | Steel pipe extension caisson foundation sealing method | |
| JP2581602B2 (en) | Waste treatment method | |
| JP3254546B2 (en) | How to construct a waterway crossing tunnel | |
| JPH0323689B2 (en) | ||
| JP2002088771A (en) | Method for constructing structure with enlarged bottom |