US3300986A - Method of constructing storage tank - Google Patents

Method of constructing storage tank Download PDF

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Publication number
US3300986A
US3300986A US357379A US35737964A US3300986A US 3300986 A US3300986 A US 3300986A US 357379 A US357379 A US 357379A US 35737964 A US35737964 A US 35737964A US 3300986 A US3300986 A US 3300986A
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United States
Prior art keywords
tank
sand
foundation
ground
sinking
Prior art date
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Expired - Lifetime
Application number
US357379A
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English (en)
Inventor
Hirata Hiroshi
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.)
Chiyoda Corp
Original Assignee
Chiyoda Chemical Engineering and Construction Co Ltd
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Publication date
Application filed by Chiyoda Chemical Engineering and Construction Co Ltd filed Critical Chiyoda Chemical Engineering and Construction Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02—Containers for fluids or gases; Supports therefor
    • E04H7/04—Containers for fluids or gases; Supports therefor mainly of metal
    • E04H7/06—Containers for fluids or gases; Supports therefor mainly of metal with vertical axis
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site

Definitions

  • the present invention relates to la method of constructing a cylindrical storage tank, more particularly to a method of construction a cylindrical storage tank in which the ground immediately below the tank is completely, or almost completely, compacted beforehand as ⁇ a foundation by means of a simple p-rocess. Thereafter, the permanent bottom plates and the tank itself are assembled and the tank serves to receive liquid such as oil, water and the like, pulverized subs-tance such as cement, grain and the like or granular matter such as soybean, wheat and so on.
  • liquid such as oil, water and the like, pulverized subs-tance such as cement, grain and the like or granular matter such as soybean, wheat and so on.
  • An object of the present invent-ion is to provide a novel method for construction tanks thereby overcoming the dili-culties encountered in the conventional technique as described hereinabove. That is, in order to prevent a tank from being involved in serious troubles of various kinds caused by a sinking of the soft ground, the ground immediately below the tank is to sink beforehand suiciently until a safe sinking of the ground is attained and firmly hardened to the extent that substantially no more sinking will occur, prior to assembling the inner bottom portion of said tank. For this purpose, a temporary bottom of exible water impervious film will be provided on the sketch plate (the bottom plate upon which the shell rests), which tank is not yet provided with its proper inner bottom member, and the water is lled into this tank.
  • An object of the present invention is to reduce a time required 'for attaining required sinking by providing sand piles in the grou-nd and to fit the temporary bottom ⁇ member simply and securely by providing particular reinforcing members and protection sheets (precautionary flexible sheets) over the connection between the flexible water impervious film and the sketch plates which are connected to the side wall in the lowest part thereof, and by meohanizing a jointing and inspecting process of the flexible water impe-rvious lm.
  • FIG. 1 is a vertical longitudinal sectional view showing a tank and its foundation in a condition prior to uneven sinking;
  • FIG. 2 is a vertical longitudinal sectional view showing a condition after uneven sinking by means of water ballast
  • FIG. 3 is a vertical longitudinal sectional view showing a complete condition ⁇ of the predetermined configuration by levelling an uneven surface
  • FIG. 6 is a detailed sectional View show-ing a part A in FIG. l, in an enlarged scale
  • FIG. 7 is ⁇ a vertical sectional view showing a process of welding together the water impervious film
  • FIG. 8 is a vertical sectional view showing an inspecting process of the Water impervious film to detect a flaw such as a pin hole by means of la hole detector;
  • FIG. 9 is a cross sectional View showing a reinforcing member.
  • 3 a support member for a side wall of the tank, for instance, of concrete, brick or steel plate, designed for preventing a sketch plate 4 immediately below the side wall from deforming due to the weight of the side wall of the tank and ⁇ for easy assembly work of the side plates of the tank; 4 the skitch plates constituting peripheral parts of the bottom; 5 side plates of the tank; 6 a temporary bottom member of flexible water impervious lm; 6 a iiexible wate-r impervious lm brought into the tank separately; 7 an overlapped joint lof the temporary bottom 6 with the sketch plate 4; 8 a nozzle and valve mounted on the tank in the lower part thereof intended for filling or discharging water or liquid; 9 the water ballast; 10 a piece of soft ground; 11 sand piles; 12 bottom plates of the tank located inwardly of the sketch plates; 13 a soft resilient reinforcing member fitted annularly over the inner edge of the sketch plates designed Ifor preventing the temporary bottom 6 lfrom damage when in
  • FIG. 1 sand piles having the aforementioned diameter and spacing will be provided in a soft ground 10 and a sand banking 2 will be built on the ground 1 while compacting it, Furthermore, a support member 3 for the side wall is provided annularly in a location immediately below the side wall 5 of the tank.
  • the sketch plates 4 and the tank side wall S are placed thereupon with necessary parts being welded together in a tight manner.
  • the configuration and number of the sketch plates 4 and the inner bottom plating 12 as illustrated in FIGS. 4 and 5 are intended to show merely an embodiment according to the present invention and may be designed in any other way.
  • a soft resilient reinforcing member 13 is fitted annularly over said sketch plates 4 along its inner edge in order to prevent the fiexible water impervious lm from damage as illustrated in FIG. 6. Further, a protection film 14 is adhered annularly on the sketch plate 4 covering the reinforcing member 13. And then, a temporary bottom 6 of flexible water impervious film is laid out on the sand banking within a tank and adhered to the upper surface of the sketch plate along its periphery using suitable adhesive. As the bottom area of the tank becomes larger, a coverage of flexible water impervious film 6 will also become bigger, rendering a transportation and laying out thereof difficult. Therefore, the film may be divided into any suitable size and then brought into the tank. In this case, said flexible water impervious film will be welded together in place by a process as illustrated in FIG. 7. That is, a welding is carried out -by means of a high frequency electric welding process.
  • a positive electrode 18 and a negative electrode 18 are disposed adjacent to each other in such a manner as to weld in two portions, By moving the conductive metal plate 19 under the overlapping end portions and the welding electrodes 18 and 18', a weld is made in the form of two continuous seams.
  • a continuous watertight temporary bottom is obtained all over the bottom area of the tank.
  • the inspection of defects such as pin holes causing a leakage in such temporary bottom will naturally cost much labor and time due to a large area of examination.
  • a pinhole detector comprising a collector 4brush 26 attached at the end of handle 25 of insulating material is used.
  • the collector brush is connected at one end with a high voltage generator 22 by means of a circuit 23.
  • the high voltage generator 22 is a stepup transformer, connected with a high voltage circuit in the secondary side, having a collector brush 26 at one end, and grounded at the other end in a sand pile outside the tank through a ground bar 24. Further, the sand pile, previously moistened by sprinkling as described hereinabove, will become electrically conductive so that a high voltage circuit will be formed as follows: 22 23 26 6- 2 24 22 (see FIG. 8). If film 6 has no defect, such as a pin hole, the film will be a perfect insulating material permitting no high voltage circuit to be formed with no current flowing.
  • the collector brush '26 will come into contact with the moistened sand pile 2 through the defective spot to form a high voltage circuit in which electric current flows. The detection of this electric currentl will locate a defective spot and then sound a buzzer.
  • Sweeping of the temporary bottom by means of a pin hole detector comprising such a collector brush will permit a large area of the temporary bottom to be inspected in a short time.
  • a leaking part may be adhered together and mended -by using the same material as the flexible water impervious film 6.
  • the water impervious film 6 is fitted merely as a temporary bottom member and an examination and mending of defective parts will be completed in this manner. And then water will be directed into the tank through a valve 8. Actually, water is gradually filled therein in such a manner to avoid a shearing type flow.
  • the temporary bottom 6 will be removed and then the sand banking 2 and uneven sinking under the side plates of the tank will be corrected to a predetermined configuration as illustrated in FIG. 3.
  • many bottom plates 12 constituting an inner portion of the tank bottom are laid out in a close contact with each other and welded together tightly among themselves and to the sketch plates 4 thereby completing a construction of the tank main body.
  • a roof and other annexed equipments will be mounted thereon, thus finishing the construction of the whole tank.
  • the sand pile 11 can be eliminated thereby reducing a construction period and assuring an economical construction of the tank.
  • a water load is applied on a soft ground by filling the tank to the full prior to fitting and welding of the permanent bottom structure of the proper design. Therefore, sinking and compacting of the ground will be effected to a considerable depth where the load of the tank is transmitted. Uneven sinking of the ground is effected beforehand and a foundation of the sand banking is corrected to a predetermined conguration and then the bottom platings of proper design are laid out and welded together thereby entirely safe-guarding against sinking in the future. Since water ballast is used as a temporary load instead of a conventional load including soil and sand, the loading operation is facilitated and construction Will be carried out in a reduced period of time and hence be very economical.
  • a method of constructing storage tanks wherein a foundation of sand banking is built on soft ground intended to support the tank, placing a support member, upon said foundation to form the peripheral foundation of the tank, mounting a sketch plate which extends about the inner periphery of the support member on said support member and sealingly engaging the sketch plate with the side walls of said tank, placing a temporary bottom member of a flexible water impervious film over the bottom portion of said tank to cover the entire surface area thereof with its peripheral portion being sealingly attached to said sketch plate, filling said tank with water to effect a sinking and settling of said soft ground and sand foundation, draining said tank, removing said temporary bottom member, correcting said ground surface and seal- References Cited by the Examiner ingly fitting a permanent bottom into said tank fastened about its periphery to said sketch plate.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US357379A 1964-03-17 1964-04-06 Method of constructing storage tank Expired - Lifetime US3300986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1459064 1964-03-17

Publications (1)

Publication Number Publication Date
US3300986A true US3300986A (en) 1967-01-31

Family

ID=11865369

Family Applications (1)

Application Number Title Priority Date Filing Date
US357379A Expired - Lifetime US3300986A (en) 1964-03-17 1964-04-06 Method of constructing storage tank

Country Status (5)

Country Link
US (1) US3300986A (da)
DE (1) DE1634287B1 (da)
DK (1) DK111479B (da)
GB (1) GB1017117A (da)
NL (1) NL6405192A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854265A (en) * 1972-06-12 1974-12-17 Ishikawajima Harima Heavy Ind Method for constructing an underground storage tank

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2388870C1 (ru) * 2008-12-18 2010-05-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Способ устройства основания фундамента резервуара
RU2475596C2 (ru) * 2009-08-03 2013-02-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Способ подготовки основания цилиндрических резервуаров на сжимаемых грунтах
RU2437987C1 (ru) * 2010-05-18 2011-12-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Способ возведения фундамента резервуара
RU2592929C1 (ru) * 2015-06-10 2016-07-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Омский государственный технический университет" Фундамент резервуара с улучшенными теплоизоляционными свойствами
RU2676778C1 (ru) * 2018-02-27 2019-01-11 Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" Фундамент резервуара с улучшенными теплоизоляционными свойствами
RU2684558C1 (ru) * 2018-06-14 2019-04-09 Федеральное государственное автономное образовательное учреждение высшего образования "Северный (Арктический) федеральный университет имени М.В. Ломоносова" Способ подготовки основания здания на слабых грунтах
RU2731234C1 (ru) * 2020-01-31 2020-08-31 Федеральное государственное автономное образовательное учреждение высшего образования «Северный (Арктический) федеральный университет имени М. В. Ломоносова» Способ подготовки основания сооружения на слабых грунтах

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1049221A (en) * 1911-05-31 1912-12-31 Edgard Frankignoul Foundation.
US2301061A (en) * 1940-12-30 1942-11-03 Richard T Logeman Tank construction and the like

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE828256C (de) * 1949-09-20 1952-01-17 Walter Kjellman Verfahren zum Zusammendruecken und/oder Stabilisieren von Erdmassen
DE976300C (de) * 1949-10-13 1963-06-20 Karl Dr-Ing Habil Jurczyk Stehender Fluessigkeitsbehaelter
DE1145337B (de) * 1957-07-24 1963-03-14 Hoffmann & Hartl Abdichtung von Bauwerksteilen gegen Wasser und Vorrichtung zu ihrer Pruefung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1049221A (en) * 1911-05-31 1912-12-31 Edgard Frankignoul Foundation.
US2301061A (en) * 1940-12-30 1942-11-03 Richard T Logeman Tank construction and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854265A (en) * 1972-06-12 1974-12-17 Ishikawajima Harima Heavy Ind Method for constructing an underground storage tank

Also Published As

Publication number Publication date
DE1634287B1 (de) 1971-06-09
NL6405192A (da) 1964-10-26
GB1017117A (en) 1966-01-19
DK111479B (da) 1968-08-26

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