JPS5953994B2 - Underground tank construction method - Google Patents

Underground tank construction method

Info

Publication number
JPS5953994B2
JPS5953994B2 JP56046317A JP4631781A JPS5953994B2 JP S5953994 B2 JPS5953994 B2 JP S5953994B2 JP 56046317 A JP56046317 A JP 56046317A JP 4631781 A JP4631781 A JP 4631781A JP S5953994 B2 JPS5953994 B2 JP S5953994B2
Authority
JP
Japan
Prior art keywords
pipe
cooling
concrete
continuous wall
underground
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
Application number
JP56046317A
Other languages
Japanese (ja)
Other versions
JPS57161400A (en
Inventor
弘 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nishimatsu Construction Co Ltd
Original Assignee
Nishimatsu Construction Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nishimatsu Construction Co Ltd filed Critical Nishimatsu Construction Co Ltd
Priority to JP56046317A priority Critical patent/JPS5953994B2/en
Publication of JPS57161400A publication Critical patent/JPS57161400A/en
Publication of JPS5953994B2 publication Critical patent/JPS5953994B2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/10—Arrangements for preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0678—Concrete
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/031—Dealing with losses due to heat transfer
    • F17C2260/032—Avoiding freezing or defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0142—Applications for fluid transport or storage placed underground

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Description

【発明の詳細な説明】 低温の液体ガスなどを地下に貯蔵する方法は、第１図、
ａのように地中４に連続壁１を仮設として平面的に円形
に所定深さまで打ち込み、ｂのように次に掘削しながら
本構造のコンクリート２を順次上から帯状に打設し、Ｃ
のように所定の深度に達したら底盤のコンクリートを打
設し、その内部に断熱材を置きライナープレートを張っ
て終了する。[Detailed Description of the Invention] A method for storing low-temperature liquid gas underground is shown in Figure 1.
As shown in a, a temporary continuous wall 1 is poured into the ground 4 in a circular plane to a predetermined depth, and as shown in b, while excavating, the concrete 2 of the main structure is sequentially poured in a strip from above.
When the specified depth is reached, the concrete for the bottom is poured, insulation is placed inside, and a liner plate is placed inside.

この時、連続壁１は、例えば２ｍの厚さのコンクリート
を１００ｍ深度にわたって一時に打設する。At this time, for the continuous wall 1, concrete having a thickness of, for example, 2 m is poured at once over a depth of 100 m.

このコンクリート温度が未だ冷却しない時に、掘削と共
に一工程につき厚さ３ｍ、深さ６ｍのコンクリート２を
順次打設する。When the temperature of the concrete has not yet cooled, concrete 2 with a thickness of 3 m and a depth of 6 m is sequentially poured in each step along with excavation.

未だ冷却せぬコンクリート１に接してコンクリート２を
新たに打設するから、コンクリートの温度は益々高温に
なる。Since concrete 2 is newly placed in contact with concrete 1 which has not yet cooled, the temperature of the concrete becomes increasingly high.

このため、仮設、構造物コンクリート１゜２が冷却する
時点では、各点に収縮応力を生じ、壁体に引張応力を生
じせしめたり、あるいはクラックを生じて漏水の原因と
なる。For this reason, when the temporary or structural concrete 1.2 cools, shrinkage stress is generated at each point, causing tensile stress in the wall or causing cracks, causing water leakage.

次に、ｄのように地下貯蔵タンクが完成して、低温貯蔵
物を貯蔵する時には、ｅのように低温物９は周囲４の土
壌８を凍結するので、凍結土８は膨張力でタンク２を圧
縮したり、タンク２を凍結膨張力で凍上させたりする。Next, when the underground storage tank is completed and the low-temperature storage material is stored as shown in d, the low-temperature material 9 freezes the surrounding soil 8 as shown in e, so the frozen soil 8 is expanded into the tank 2. or freeze up the tank 2 by freezing expansion force.

本発明はこれらの欠点を克服して、コンクリートの収縮
応力を減少させ、そして凍結膨張による応力を減少させ
んとする工法である。The present invention is a construction method that overcomes these drawbacks and reduces the shrinkage stress of concrete and the stress caused by freezing and expansion.

本発明方法では、第１図ａのごとく、地盤４に連続地中
盤１を所定の深度まで打設する。In the method of the present invention, as shown in FIG. 1a, a continuous underground foundation 1 is poured into the ground 4 to a predetermined depth.

この時、ｂのごとく１中に冷却管７を設備し、７は冷却
水供給管６と排出管５に第２図のごとく各々管７３と管
７２で接触される。At this time, a cooling pipe 7 is installed in 1 as shown in b, and 7 is brought into contact with the cooling water supply pipe 6 and the discharge pipe 5 through pipes 73 and 72, respectively, as shown in FIG.

コンクリート固化中は、６から冷却水を供給して管７で
連続壁を冷却する。During concrete solidification, cooling water is supplied from 6 to cool the continuous wall through pipe 7.

この操作を繰り返えして行い、第１図すのごとく、掘削
しながら構造物コンクリート２を、必要な場合には隙間
３をあけて、段階的に打設する。This operation is repeated, and as shown in Figure 1, structural concrete 2 is poured in stages while excavating, leaving gaps 3 if necessary.

この時、２の温度が上昇しない様に７に冷却水を流して
温度上昇を防ぐ。At this time, to prevent the temperature of 2 from rising, flow cooling water through 7 to prevent the temperature from rising.

掘削とコンクリートが所定の深度に達した時は第１図Ｃ
のごとく、底版コンクリートを打設し、内側に断熱材を
置き、内面にライニング鋼板を施工する。When the excavation and concrete reach the specified depth, Figure 1C
As shown below, concrete is poured on the bottom slab, insulation is placed on the inside, and a lining steel plate is installed on the inside.

次に、第１図ｄのごとく内部に冷熱液体等を満す。Next, as shown in FIG. 1d, the inside is filled with a cold liquid or the like.

この時は、１中に埋設した冷却管７内に６に温水又は不
凍結液体を供給し、管７中を循環させて管５で冷却され
た温水を排水し、１及び周辺４の凍結を防止する。At this time, warm water or non-freezing liquid is supplied to 6 into cooling pipe 7 buried in 1, and the hot water cooled by pipe 5 is drained by circulating through pipe 7 to prevent freezing of 1 and the surrounding area 4. To prevent.

冷却管は第３図のごとく、冷却水の往路は７３を通って
管７の周囲を流れ、還りは内部の７１を通って７２で接
続されて管５に接続される。As shown in FIG. 3, the cooling water passes through the cooling pipe 73 and flows around the pipe 7, and the return water passes through the interior 71 and is connected to the pipe 5 at 72.

冷却水は、コンクート温度の上昇が激しくない時は、河
水、海水、地下水などの冷却水を、夏季でコンクリート
温度上昇の甚しい時は、冷却器で冷却した冷却ブライン
などを循環させる。When the concrete temperature does not rise sharply, cooling water such as river water, seawater, or underground water is used, and when the concrete temperature rises significantly in the summer, cooling brine cooled by a cooler is used.

同様に、構造物２及び１を保温する時は、６から温水又
は不凍液ブラインなどを送り、７を循環させて５に接続
して循環させる。Similarly, when keeping the structures 2 and 1 warm, warm water or antifreeze brine is sent from 6, circulated through 7, and connected to 5 for circulation.

冷却管７の配置は、１の鉄筋に予じめ正確に配置して鉄
筋と同時に投入が可能である。The cooling pipes 7 can be placed accurately in advance on one reinforcing bar and inserted at the same time as the reinforcing bars.

循環の方法は第３図のごとく２重管循環方式の他に、単
管循環方式を設備することができる。As for the circulation method, in addition to the double pipe circulation system as shown in Fig. 3, a single pipe circulation system can be installed.

冷却の循環方法は、管５で供給、管６で排水することも
できる。The cooling circulation method can also be such that the pipe 5 is used to supply the water and the pipe 6 is used to drain the water.

冷却水を使用する時は、管５． ６． ７２． ７３は
保温する必要があり、管７、管５，６の接続が容易な様
に、７２，７３はポリエチレン管などの可撓性の管を使
用することが出来る。When using cooling water, pipe 5. 6. 72. 73 needs to be kept warm, and for easy connection of pipe 7 and pipes 5 and 6, flexible pipes such as polyethylene pipes can be used for 72 and 73.

管７の冷却液の温度管理は、１または２に埋め込まれた
温度計により、視覚であるいは、電気的に連動させて冷
却液の温度の上下、送水量の管理を行うことができる。The temperature of the coolant in the tube 7 can be controlled visually or electrically by using a thermometer embedded in 1 or 2 to control the temperature of the coolant and the amount of water to be fed.

送水量の管理にはｖＳモーターなどを使用して行うこと
も出来る。It is also possible to use a vS motor etc. to manage the water supply amount.

本発明はこの様に行うので、従来の地中連続壁や構造物
のごとく過大なコンクリート硬化熱に伴う温度上昇がな
く、そのため、大きな収縮力やクラックを生じることが
ない。Since the present invention is carried out in this manner, there is no temperature rise due to excessive concrete curing heat, unlike in conventional underground continuous walls and structures, and therefore large shrinkage forces and cracks do not occur.

その上、工事が完了して低温物質をタンク内に充填した
時には、冷却管を利用して保温するので、周囲の地盤を
凍結することがなく、凍結圧縮力をタンク躯体に与える
こともない。Furthermore, when the construction is completed and the tank is filled with low-temperature material, cooling pipes are used to keep it warm, so the surrounding ground will not freeze and no freezing compressive force will be applied to the tank frame.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は低温物質貯蔵タンクの建設法と、冷却管の設置
法の順序、及び冷却物体貯蔵時の周囲の凍結状況を示す
断面図、第２図は、冷却管設置の斜面図、第３図は、冷
却管の詳細断面図である。 図において、１は仮設連続壁体、２は本構造コンクリー
ト （タンク）、７は冷却管である。Figure 1 is a cross-sectional view showing the construction method of a low-temperature material storage tank, the order of cooling pipe installation methods, and the frozen state of the surrounding area during storage of cooled objects. Figure 2 is a slope view of cooling pipe installation. The figure is a detailed sectional view of the cooling pipe. In the figure, 1 is the temporary continuous wall, 2 is the main structural concrete (tank), and 7 is the cooling pipe.

Claims (1)

【特許請求の範囲】 １ 低温物質貯蔵地下タンクの施工法に於て、地中連続
壁を施工する時に、連続壁体内にコンクリート冷却管を
埋設し、そして、地中連続壁体コンクリートを冷却し次
いで、本構造コンクリートを打設した時も、冷却し、地
下タンクが完成して、低温物質がタンク内に貯蔵された
時は、冷却管に温水または不凍結液などを循環させて周
辺が凍結することを防止することを特徴とするコンクリ
ート冷却管設置地下タンク建設方法。 ２ 上記の冷却に際して、内部が二重管の冷却管を使用
し、冷却水が内管と外管の間を往き内管を還えるように
するか、あるいは、内管を往き内管と外管の間を還える
ようにすることを特徴とする特許請求の範囲第１項に記
載の方法。 ３ 冷却管を地中連続壁の鉄筋に緊結して正確に配置し
、地中連続壁内に投入することを特徴とする特許請求の
範囲第１項に記載の方法。[Scope of Claims] 1. In the construction method of an underground tank for storing low-temperature substances, when constructing an underground continuous wall, a concrete cooling pipe is buried in the continuous wall, and the concrete of the underground continuous wall is cooled. Next, when the main structural concrete is placed, it is cooled, and when the underground tank is completed and low-temperature materials are stored in the tank, hot water or anti-freeze liquid is circulated through the cooling pipes to prevent the surrounding area from freezing. A method of constructing an underground tank with concrete cooling pipes, characterized by preventing 2 For the above cooling, either use a cooling pipe with a double pipe inside and allow the cooling water to go between the inner pipe and the outer pipe and return to the inner pipe, or 2. A method according to claim 1, characterized in that the tubes are recirculated. 3. The method according to claim 1, characterized in that the cooling pipe is tied to reinforcing bars of the underground continuous wall, placed accurately, and inserted into the underground continuous wall.
JP56046317A 1981-03-31 1981-03-31 Underground tank construction method Expired JPS5953994B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56046317A JPS5953994B2 (en) 1981-03-31 1981-03-31 Underground tank construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56046317A JPS5953994B2 (en) 1981-03-31 1981-03-31 Underground tank construction method

Publications (2)

Publication Number Publication Date
JPS57161400A JPS57161400A (en) 1982-10-04
JPS5953994B2 true JPS5953994B2 (en) 1984-12-27

Family

ID=12743781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56046317A Expired JPS5953994B2 (en) 1981-03-31 1981-03-31 Underground tank construction method

Country Status (1)

Country Link
JP (1) JPS5953994B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58146798A (en) * 1982-02-25 1983-09-01 Ohbayashigumi Ltd Underground tank for storing low temperature liquefied gas and execution thereof
JPS60196500A (en) * 1984-03-15 1985-10-04 Taisei Corp Pipeline structure of heating side portion of low-temperature underground tank
JPH01256673A (en) * 1988-04-06 1989-10-13 Tokyo Gas Co Ltd Method for building super-low temperature liquid storing underground tank
JP2009150409A (en) * 2007-12-18 2009-07-09 Shimizu Corp Low temperature tank and method for constructing same
JP5877997B2 (en) * 2011-10-26 2016-03-08 鹿島建設株式会社 Method for underground storage of low-temperature liquefied gas and construction method of storage facility
JP5888727B2 (en) * 2011-12-08 2016-03-22 鹿島建設株式会社 Low temperature liquefied gas underground freezing controlled storage facility
JP2017082542A (en) * 2015-10-30 2017-05-18 五洋建設株式会社 Simple heat exchanger and concrete cooling method using the same
JP6886378B2 (en) * 2017-09-28 2021-06-16 鹿島建設株式会社 How to build underground tank structure and underground continuous wall

Also Published As

Publication number Publication date
JPS57161400A (en) 1982-10-04

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