JP5732262B2 - Construction method of cylindrical tank - Google Patents

Construction method of cylindrical tank Download PDF

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Publication number
JP5732262B2
JP5732262B2 JP2011007783A JP2011007783A JP5732262B2 JP 5732262 B2 JP5732262 B2 JP 5732262B2 JP 2011007783 A JP2011007783 A JP 2011007783A JP 2011007783 A JP2011007783 A JP 2011007783A JP 5732262 B2 JP5732262 B2 JP 5732262B2
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outer
side plate
inner tank
tank
jack
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JP2012149416A (en
Inventor
寿一郎 山田
寿一郎 山田
昌彦 酒見
昌彦 酒見
成貴 加藤
成貴 加藤
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株式会社Ihi
株式会社Ihi
Ihiプラント建設株式会社
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C3/00Vessels not under pressure
    • F17C3/02Vessels not under pressure with provision for thermal insulation
    • F17C3/022Land-based bulk storage containers
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02Containers for fluids or gases; Supports therefor
    • E04H7/04Containers for fluids or gases; Supports therefor mainly of metal
    • E04H7/06Containers for fluids or gases; Supports therefor mainly of metal with vertical axis
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02Containers for fluids or gases; Supports therefor
    • E04H7/04Containers for fluids or gases; Supports therefor mainly of metal
    • E04H7/06Containers for fluids or gases; Supports therefor mainly of metal with vertical axis
    • E04H7/065Containers for fluids or gases; Supports therefor mainly of metal with vertical axis roof constructions
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02Containers for fluids or gases; Supports therefor
    • E04H7/18Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0104Shape cylindrical
    • F17C2201/0109Shape cylindrical with exteriorly curved end-piece
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0104Shape cylindrical
    • F17C2201/0119Shape cylindrical with flat end-piece
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03Orientation
    • F17C2201/032Orientation with substantially vertical main axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05Size
    • F17C2201/052Size large (>1000 m3)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602Wall structures; Special features thereof
    • F17C2203/0604Liners
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602Wall structures; Special features thereof
    • F17C2203/0612Wall structures
    • F17C2203/0614Single wall
    • F17C2203/0619Single wall with two layers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0636Metals
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0678Concrete
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/03Mixtures
    • F17C2221/032Hydrocarbons
    • F17C2221/033Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/03Mixtures
    • F17C2221/032Hydrocarbons
    • F17C2221/035Propane butane, e.g. LPG, GPL
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033Small pressure, e.g. for liquefied gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2270/00Applications
    • F17C2270/01Applications for fluid transport or storage
    • F17C2270/0134Applications for fluid transport or storage placed above the ground
    • F17C2270/0136Terminals

Description

  The present invention relates to a method for constructing a cylindrical tank.

  A double-shell cylindrical tank having an inner tank and an outer tank is used for storing low-temperature liquids such as LNG (liquefied natural gas) and LPG (liquefied petroleum gas). Patent Document 1 discloses a cylindrical tank having a metal inner tank and a concrete outer tank.

  Patent Document 1 discloses a technique for simultaneously constructing a metal inner tank and a concrete outer tank in order to shorten the construction period of the cylindrical tank. Specifically, a jack stand is erected at the bottom of the outer tub, and the jack-up device is supported at a predetermined height (see FIG. 4B of Patent Document 1). And when carrying out the side wall construction of the outer tub, the inner tub roof and the outer tub roof are assembled on the bottom of the outer tub, and then the inner tub roof and the outer tub roof are raised by the jack-up device. By installing the inner tank side plates on the roof from the uppermost one to the lowermost one in that order, simultaneous construction of the metal inner tank and the concrete outer tank is realized.

Japanese Patent Laid-Open No. 7-62924

By the way, in the above prior art, after attaching the inner tank side plate to the lowest one on the inner tank roof, a part of the grounding portion of the jack mount is removed, and the pearlite concrete block and the annular plate are assembled (Patent Literature). 1 (see FIG. 10).
Thus, in the above prior art, since the jack stand is erected on the bottom of the outer tub, the cold insulation work of laying the cold insulation material on the bottom of the outer tub is a critical path, and the cylindrical tank There is a problem that the construction period cannot be shortened sufficiently.

  The present invention has been made in view of the above problems, and a cylindrical tank capable of shortening the construction period without laying the cold insulation material and assembling the annular plate at the bottom of the outer tub as a critical path. The purpose is to provide a construction method.

In order to solve the above problems, the present invention is a method of constructing a cylindrical tank having a metal inner tub and a concrete outer tub, wherein the side wall of the outer tub is formed on the bottom of the outer tub. During assembly in order from the bottom to the top, a stand is provided on the side wall of the outer tub above and below the bottom and between the inner and outer tubs. The step of supporting the jack-up device and the inner tank roof and the outer tank roof are integrally assembled on the bottom, and the inner tank side plates are sequentially arranged on the inner tank roof from the top to the bottom. And a step of sequentially raising the attached inner tank side plate by the jack-up device while being attached to the housing.
By adopting this method, in the present invention, after assembling the side wall of the outer tub to a certain height, a stand is provided on the side wall to support the jack-up device. And the inner tank side board attached with the outer tank roof and the inner tank roof is jacked up sequentially, and the next inner tank side board is attached to the space formed in the lower part. Since the gantry for supporting the jack-up device is provided between the inner and outer tubs so as to be separated from the bottom of the outer tub, it is possible to eliminate interference with the cold insulation work at the bottom of the outer tub. For this reason, in this invention, while constructing an inner tank and an outer tank simultaneously, interference with the cool-keeping operation | work of the bottom part of an outer tank can be avoided.

Further, in the present invention, a step of detachably connecting the attached inner tank side plate and an annular member extending annularly along the outer periphery of the attached inner tank side plate between the inner and outer tanks, A plurality of jack-up devices are provided, and the plurality of jack-up devices raises the attached inner tank side plate via the connected annular members.
By adopting this method, in the present invention, an annular member is connected to a plurality of jack-up devices, and the annular member and the attached inner tub side plate are detachably connected to each other, thereby promptly after jack-up. The connection can be released and the next inner tank side plate can be jacked up.

Further, in the present invention, a technique is adopted in which the number of connecting portions that detachably connect the attached inner tank side plate and the annular member is larger than the number of installed jack-up devices.
By adopting this method, in the present invention, the concentrated load applied to the attached inner tub side plate can be reduced by increasing the number of connecting portions more than the number of jackup devices installed. Thereby, the number of jack-up devices can be reduced, and the installation work can be shortened.

Moreover, in this invention, the method of having a conveying apparatus in the said annular member, and having the process of conveying the said inner tank side plate along the said annular member by this conveying apparatus is employ | adopted.
By adopting this method, in the present invention, since the annular member extends annularly between the inner and outer tubs, the inner tub side plate can be efficiently transported by conveying the inner tub side plate along the annular member. Can be transported and attached.

Moreover, in this invention, the 2nd conveying apparatus which delivers the said inner tank side plate to the said conveying apparatus through the opening part provided in the side wall of the said outer tank is provided, and the said inner tank is provided with this 2nd conveying apparatus. A technique of having a step of conveying the side plate in a direction along the annular member is adopted.
By adopting this method, in the present invention, the inner tank side plate can be conveyed and transferred in a direction along the annular member, thereby realizing a smooth transfer operation of the inner tank side plate.

Further, in the present invention, prior to assembling the side wall of the outer tub, the bottom plate of the outer tub is disposed on the bottom of the outer tub along the inner side of the region where the side wall of the outer tub should be assembled. And a step of sequentially assembling the outer tub side plate from the outermost plate and a step of assembling the side walls of the outer tub through the scaffold.
By adopting this technique, in the present invention, prior to assembling the side wall of the outer tub, a scaffold for assembling the outer tub side plate along the inner side and assembling the outer tub side wall on the outer side of the outer tub side plate is provided. By providing, interference with the jack-up work performed inside the outer tank side plate can be avoided.

  Moreover, in this invention, the method that the said outer tank is a product made from prestress concrete is employ | adopted.

According to the present invention, there is provided a method for constructing a cylindrical tank having a metal inner tub and a concrete outer tub, wherein the side wall of the outer tub is placed on the bottom of the outer tub from the bottom to the top. In order to assemble one by one, a pedestal is provided on the side wall of the outer tub above and below the bottom and between the inner and outer tubs to support the jack-up device. Assembling the inner tank roof and the outer tank roof integrally on the bottom, and attaching the inner tank side plates to the inner tank roof in order from the uppermost to the lowermost By adopting a method of having the inner tank side plate raised by the jack-up device one after another, while simultaneously constructing the inner tank and the outer tank, and also keeping the bottom of the outer tank cold. Interference can be avoided.
Therefore, in the present invention, the construction of the cold insulating material and the assembly of the annular plate at the bottom of the outer tub does not become a critical path, so that the construction period can be shortened.

It is a figure which shows the 1st process of the construction method in embodiment of this invention. It is a figure which shows the 2nd process of the construction method in embodiment of this invention. It is a figure which shows the 3rd process of the construction method in embodiment of this invention. It is a figure which shows the 4th process of the construction method in embodiment of this invention. It is a figure which shows the 5th process of the construction method in embodiment of this invention. It is a figure which shows the 6th process of the construction method in embodiment of this invention. It is a figure which shows the 7th process of the construction method in embodiment of this invention. It is a figure which shows the 8th process of the construction method in embodiment of this invention. It is a figure which shows the 9th process of the construction method in embodiment of this invention. It is a figure which shows the mount frame for jacks and the jackup apparatus in embodiment of this invention. It is a figure which shows the connection part in embodiment of this invention. It is a plane sectional view for explaining the connection state of the jack up ring and the inner tank side plate in the embodiment of the present invention. It is a figure which shows the jackup operation | work in embodiment of this invention. It is a figure which shows the jackup operation | work in embodiment of this invention. It is a figure which shows the 10th process of the construction method in embodiment of this invention. It is a figure which shows the 11th process of the construction method in embodiment of this invention. It is a figure which shows the 12th process of the construction method in embodiment of this invention. It is a figure which shows the 13th process of the construction method in embodiment of this invention. It is the whole flowchart which shows the construction method in the embodiment of the present invention. It is a figure which shows the 2nd process of the construction method in another embodiment of this invention. It is a figure which shows the jackup apparatus in another embodiment of this invention.

  Hereinafter, the construction method of the cylindrical tank of the present invention will be described with reference to the drawings. In the following description, a ground type PC (prestressed concrete) double-shell storage tank for storing LNG is exemplified as the cylindrical tank.

  First, as shown in FIG. 1, the construction of a substantially disc-shaped base plate (the bottom of the outer tub) 1 is performed. A base portion 3 for assembling a PC wall (side wall of the outer tub) 2 to be described later is provided on the outer peripheral edge portion of the base plate 1. Moreover, the inner tank anchor strap 4 is installed along the inner side of the foundation part 3.

  Next, as shown in FIG. 2A, a side liner (outer tank side plate) 5 is assembled on the base plate 1. The side liner 5 also serves as a concrete formwork. The side liner 5 is usually a steel material having a plate thickness of about 6 mm, but in this embodiment, the plate thickness is set to about 20 mm to improve the strength.

  The side liner 5 is assembled along the inside of the base portion 3. As shown in FIG. 2 (b), a substantially L-shaped embedded plate 6 is installed at the base end portion of the base portion 3, and the side liner 5 is installed thereon. Further, as shown in FIG. 2A, a bottom liner 7 is laid on the base plate 1. As shown in FIG. 2B, the edge of the bottom liner 7 is laid on the embedded plate 6.

Next, as shown in FIG. 3, the side liner 5 is further assembled. A temporary mount 8 for assembling the inner tank side plate is installed along the inside of the base end portion of the side liner 5.
Then, as shown in FIG. 4, the side liners 5 are assembled in order from the lowermost one to the uppermost one. Here, the side liner 5 is assembled up to, for example, the fourth stage.

  Next, as shown in FIG. 5, the lowermost (first stage) PC wall 2 is placed on the foundation portion 3 along the side liner 5 assembled up to the fourth stage in advance. Moreover, the inner tank side plate 9 is erected on the temporary mount 8, the adjacent inner tank side plates 9 are welded together, and assembled in an annular shape. The inner tank side plate 9 corresponds to the uppermost stage (the ninth stage in the present embodiment). The inner tank side plate 9 is made of a Ni steel material having excellent toughness and strength.

  Next, as shown in FIG. 6, the roof mount 10 is assembled at the center of the base plate 1. Further, the knuckle plate 11 is assembled to the upper end portion of the inner tank side plate 9. In addition, an aerial work vehicle 12 is placed on the basic version 1. In addition, constituent members of the annular portion 13 such as a pearlite concrete block and a structural lightweight concrete block are temporarily placed under the temporary mount 8.

  Next, as shown in FIG. 7, the inner tank roof block is mounted on the roof mount 10 and the inner tank roof 14 is assembled. Further, the inner tank side plate 9 is attached to the outer peripheral edge portion of the inner tank roof 14 via the knuckle plate 11. At this time, the PC wall 2 is assembled by being driven along the side liner 5 from the lowermost one to the uppermost one (in this case, up to the fifth step in the middle).

  Next, a jack stand (base) 16 is installed on the PC wall 2 between the inner and outer tanks (between the PC wall 2 and the inner tank side plate 9) above the base plate 1. The jack mount 16 is protruded in the horizontal direction from the PC wall 2 having a predetermined height toward the inside. The jack mount 16 is firmly assembled through, for example, a J-type anchor embedded when the PC wall 2 is placed.

  Next, as shown in FIG. 8, the outer tank roof 17 is assembled on the inner tank roof 14. Further, here, the outer peripheral edge of the outer tub roof 17 is supported by using the jack mount 16. In addition, the inner tank roof 14 and the outer tank roof 17 are connected by a connecting material (not shown) and assembled integrally.

  Also, the side liner 5 is assembled. Then, a one-leg scaffold (scaffold) 18 is provided on the outside of the side liner 5 and the placement of the PC wall 2 is continued. As described above, since the PC wall 2 is adjusted in thickness and increased in strength, it can be used as a one-legged scaffold 18 instead of a conventional two-legged scaffold. By doing in this way, interference with the jackup operation | work mentioned later performed inside the side liner 5 can be avoided.

Next, as shown in FIG. 9, a jack-up device 19 is installed on the jack mount 16. The jackup device 19 has a jackup rod 20.
Next, as shown in FIG. 10, a jackup ring (annular member) 21 is connected to the lower end portion of the jackup rod 20. The jack-up ring 21 extends in an annular shape along the outer periphery of the attached inner tank side plate 9 between the inner and outer tanks 15 by connecting a plurality of H-shaped steels.

  The jack-up ring 21 and the inner tank side plate 9 are configured to be detachably connectable. More specifically, as shown in FIG. 11, the suspension piece 22 is integrally provided by welding to the web of the jackup ring 21, and the suspension piece 23 is integrally welded to the outer peripheral portion of the inner tank side plate 9. The suspending piece 22 and the suspending piece 23 are detachably connected using pins 24 to form a connecting portion 25. The suspension piece 23 of the inner tank side plate 9 is preferably left as a permanent piece without being cut out after jacking up from the viewpoint of work efficiency.

  FIG. 12 is a cross-sectional plan view for explaining a connection state between the jack-up ring 21 and the inner tank side plate 9. A plurality of jackup devices 19 are provided, and a jackup ring 21 is supported by a plurality of jackup rods 20 arranged at intervals. A plurality of connecting portions 25 are provided at intervals smaller than the interval between the jack-up rods 20.

  The number of connecting portions 25 that detachably connect the inner tank side plate 9 and the jack up ring 21 is larger than the number of jack up devices 19 installed (the number of jack up rods 20). Thereby, the concentrated load concerning the inner tank side plate 9 at the time of jackup can be reduced. Thereby, the number of jackup devices 19 can be reduced, and the installation work can be shortened.

  Returning to FIG. 10, the conveying device 26 is provided on the jack-up ring 21. The transport device 26 includes a rail 27 attached to the lower part of the jack-up ring 21 and a trolley 28 that is movable along the rail 27. The rail 27 extends in an annular shape along the outer periphery of the attached inner tank side plate 9 between the inner and outer tanks 15 by connecting a plurality of I-shaped steels. A trolley 28 is provided on the rail 27 so that the inner tank side plate 9 can be conveyed in the circumferential direction between the inner and outer tanks 15.

  In addition, a second transfer device 30 is provided to deliver the inner tank side plate 9 to the transfer device 26 through a construction port (opening) 29 provided in the PC wall 2. The second transport device 30 includes a rail 31 that extends from the construction port 29 to the outside of the PC wall 2, and a trolley 32 that is movable along the rail 31. The rail 31 is extended in the direction along the jackup ring 21 as shown in FIG. 12 by connecting a plurality of I-shaped steels. A trolley 32 is provided on the rail 31 so that the inner tank side plate 9 can be conveyed in a direction along the jack-up ring 21.

  Next, as shown in FIG. 13, the inner tank side plate 9 is raised together with the inner tank roof 14 and the outer tank roof 17 by the jack-up device 19. Then, the next inner tank side plate 9 (eighth stage) is carried into the space formed in the lower part of the inner tank side plate 9. Next, the inner tank side plate 9 to be attached is transported in the direction along the jack up ring 21 by the second transport device 30 and transferred to the transport device 26 provided at the lower portion of the jack up ring 21.

  As shown in FIG. 12, the second transport device 30 transports the inner tank side plate 9 in a direction along the jack-up ring 21, so that the second transport device 30 smoothly transfers to the transport device 26 without adjusting the direction of the inner tank side plate 9. It can be performed. Then, the received inner tank side plate 9 is transferred by the transfer device 26 in the circumferential direction along the space 15 between the inner and outer tanks where the rail 31 connected to the lower part of the jackup ring 21 extends, and the temporary mount 8 is placed at a predetermined position. It is lowered and placed annularly below the jacked up inner tank side plate 9. And the inner tank side plates 9 arranged annularly are welded together, and the inner tank side plate 9 arranged annularly and the inner tank side plate 9 jacked up are welded and attached.

  Next, as shown in FIG. 14, the connection between the jacked up inner tank side plate 9 and the jackup ring 21 is released, the jackup rod 20 is lowered, and the newly installed inner tank side plate 9 and the jackup ring are lowered. 21 is connected. Thereafter, the inner tank side plate 9 attached by the jack-up device 19 is raised, and the inner tank side plate 9 to be newly attached is carried in. This process is repeated, and the inner tank side plate 9 is attached in order from the uppermost one to the lowermost one.

  During this process, as shown in FIG. 15, the cold insulation work for the annular portion 13 and the cold insulation work for the central portion are performed on the base plate 1. The cold insulation work in the center is performed by sequentially laminating a cold insulation material 33, more specifically, a bottom thermal resistance reducing material, bubble glass, lightweight cellular concrete, and the like on the bottom liner 7 laid on the base plate 1. Further, the cold insulation work of the annular portion 13 is performed by assembling a pearlite concrete block or a structural lightweight concrete block under the temporary mount 8, and attaching an annular plate thereon.

  Further, during this process, the PC wall 2 is assembled to the uppermost stage while providing the one-foot scaffold 18. Further, during this process, a fire extinguishing staircase 34 is provided outside the PC wall 2. Further, during this process, the outer tank roof 17 is provided with a roof staircase 35, a perlite manhole 36, an inner and outer tank roof manhole 37, and the like.

  Next, as shown in FIG. 16, when the attachment of the inner tank side plate 9 to the lowermost stage is completed, the temporary mount 8 is removed, and the lower end of the lowermost stage of the inner tank side plate 9 is lowered onto the annular portion 13. Attached to the inner tank anchor strap 4 installed in the base plate 1. The jacked up outer tank roof 17 is attached to the upper end of the PC wall 2 assembled up to the uppermost level via a knuckle plate (not shown). Then, the jack cradle 16 and the jack-up device 19 are removed.

  Next, as shown in FIG. 17A, an inner tank bottom plate 38 is laid. Thereby, the cold insulation work of a bottom part is complete | finished. In FIG. 17B, reference numeral 1 denotes the basic plate 1, reference numeral 7 denotes a bottom liner, reference numeral 38 denotes an inner tank bottom plate 38, reference numeral 39 denotes a bottom cooling resistance reducing material, reference numeral 40 denotes wax glass, Reference numeral 41 denotes lightweight aerated concrete, reference numerals 41A and 41B denote pearlite concrete blocks, reference numeral 42 denotes a structural lightweight concrete block, and reference numeral 43 denotes an annular plate.

After that, tension work on the PC wall 2 is performed. Then, after closing the inner tank construction port (not shown) and installing the pump barrel (not shown), the water tank is filled and a pressure resistance / air tightness test is performed.
Finally, as shown in FIG. 18, the inside / outside tank 15 is filled with a cold insulation material 44 (for example, pearlite), and the inside / outside tank is cooled, and then the cylindrical tank 100 is constructed through painting work and piping cooling work. Is done.

FIG. 19 is an overall flowchart showing the construction method in the embodiment of the present invention. In FIG. 19, hatched processes (foundation, PC wall, side PUF) are processes performed by a civil engineering company.
According to this method, as shown in FIG. 19, after the foundation is constructed, the liner (side liner 5)) is constructed prior to the PC wall, and the roof, inner tub, and bottom plate are installed during the construction of the PC wall. The construction period can be greatly shortened by construction.

Therefore, according to the above-described embodiment, a method for constructing a cylindrical tank 100 having a metal inner tank and a concrete outer tank, in which the PC wall 2 is placed at the lowest stage on the base plate 1. During the assembly from the top to the top one after another, a jack stand 16 is provided on the PC wall 2 above the base plate 1 and between the inner and outer tanks 15 between the inner and outer tanks. The process of supporting the apparatus 19 and the inner tank roof 14 and the outer tank roof 17 are integrally assembled on the base plate 1, and the inner tank side plate 9 is changed from the uppermost to the lowermost on the inner tank roof 14. The jack cradle 16 for supporting the jack-up device 19 is adopted by adopting a method of sequentially raising the attached inner tub side plate 9 by the jack-up device 19 while being attached in sequence. Between inner and outer tanks 15 Since it is provided apart from the base plate 1, interference with the cold insulation work in the basic plate 1 can be eliminated, and the inner tank and the outer tank can be constructed at the same time, Interference can be avoided.
Therefore, in the present embodiment, since the cold insulation work for laying the cold insulation material on the foundation plate 1 does not become a critical path, the construction period can be shortened.

  Moreover, in this embodiment, the attached inner tank side plate 9 and the jack-up ring 21 extending annularly along the outer periphery of the attached inner tank side plate 9 between the inner and outer tanks 15 are detachable. A plurality of jack-up devices 19, and the plurality of jack-up devices 19 raise the attached inner tub side plate 9 via the connected jack-up rings 21. By adopting the technique, a jack up ring 21 is connected to a plurality of jack up devices 19, and the jack up ring 21 and the attached inner tub side plate 9 are detachably connected, so that after jack up, The connection can be quickly released and the next inner tank side plate 9 can be jacked up.

  Further, in the present embodiment, a method is employed in which the number of connecting portions 25 that detachably connect the attached inner tank side plate 9 and the jack-up ring 21 is larger than the number of jack-up devices 19 installed. Thus, the concentrated load applied to the attached inner tank side plate 9 can be reduced by increasing the number of the connecting portions 25 as compared with the number of the jack-up devices 19 installed. Thereby, the number of jackup devices 19 can be reduced, and the installation work can be shortened.

  Further, in the present embodiment, the jack up ring 21 is provided with a transport device 26 and the transport device 26 has a step of transporting the inner tank side plate 9 along the jack up ring 21 to thereby adopt the jack. Since the up ring 21 extends in an annular shape between the inner and outer tanks 15, the inner tank side plate 9 can be transported and attached along the jack up ring 21 to efficiently transport and attach the inner tank side plate 9. It becomes.

  Further, in the present embodiment, a second transfer device 30 is provided for transferring the inner tank side plate 9 to the transfer device 26 through a construction port 29 provided in the PC wall 2. By adopting a method of transporting the tank side plate 9 in the tangential direction of the jack up ring 21, the inner tank side plate 9 can be transferred and transferred in the tangential direction of the jack up ring 21. It is possible to realize smooth delivery work.

  In the present embodiment, prior to the assembly of the PC wall 2, the side liner 5 is moved from the bottom to the top on the base plate 1 along the inside of the region where the PC wall 2 is to be assembled. By adopting a technique that includes a step of sequentially assembling into a thing and a step of providing a one-foot scaffold 18 on the outside of the side liner 5 and assembling the PC wall 2 via the one-leg scaffold 18, the PC wall 2 Prior to assembling, the side liner 5 is assembled along the inside thereof, and the one-leg scaffold 18 for assembling the PC wall 2 is provided outside the side liner 5, thereby jacking up the inside of the side liner 5. Can be avoided.

  As mentioned above, although preferred embodiment of this invention was described referring drawings, this invention is not limited to the said embodiment. The means and the shapes and combinations of the constituent members shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements and the like without departing from the spirit of the present invention.

  For example, in the above-described embodiment, it has been described that the strength of the side liner 5 is improved by setting the thickness of the side liner 5 to about 20 mm. However, the present invention is not limited to this means. You may install a stiffener.

  Further, for example, in the above-described embodiment, it has been described that the substantially L-shaped embedded plate 6 is installed at the base end portion of the base portion 3 in the step shown in FIG. 2, but the present invention is limited to this means. Instead, for example, as shown in FIG. 20, the embedded plate 6 may have a flat plate shape.

  Further, for example, in the above-described embodiment, it has been described that the inner tank side plate 9 is erected on the temporary mount 8 in the step shown in FIG. 5, but the present invention is not limited to this means, for example, The knuckle plate 11 may be assembled prior to the inner tank side plate 9. Furthermore, a means for lifting the previously assembled knuckle plate 11 with the jack-up device 19 may be employed.

For example, in the above-described embodiment, as shown in FIGS. 11 to 14, the jack-up device 19 has been described as lifting the inner tank side plate 9 using the jack-up ring 21, but the present invention is limited to this means. For example, as shown in FIG. 21, a means for lifting the inner tank side plate 9 using the rod connector 50 may be employed.
The rod coupler 50 is attached to the lower end portion of the jackup rod 20. The rod coupler 50 has a cannula 51 that can be directly coupled to the inner tank side plate 9 or the knuckle plate 11. Specifically, as shown in FIG. 21, the kanuki 51 has a configuration that can be locked to a locking piece 51 welded to the inner tank side plate 9.
According to this configuration, it is possible to reduce the trouble of assembling and disassembling the jackup ring 21 and the interference with the structure in the space 15 between the inner and outer tanks.

  DESCRIPTION OF SYMBOLS 1 ... Base plate (bottom part of outer tank), 2 ... PC wall (side wall of outer tank), 5 ... Side liner (outer tank side plate), 9 ... Inner tank side plate, 14 ... Inner tank roof, 15 ... Between inner and outer tanks, DESCRIPTION OF SYMBOLS 16 ... Jack mount (frame), 17 ... Outer tank roof, 18 ... One foot scaffold (scaffold), 19 ... Jack up apparatus, 21 ... Jack up ring (annular member), 25 ... Connection part, 26 ... Conveyance apparatus, 29 ... Construction port (opening), 30 ... Second transfer device, 100 ... Cylindrical tank

Claims (5)

  1. A construction method of a cylindrical tank having a metal inner tank and a concrete outer tank,
    While assembling the side walls of the outer tub in order from the bottom to the top on the bottom of the outer tub, the inner tub and the outer tub are above and below the bottom. Between the tanks, providing a pedestal on the side wall of the outer tank and supporting the jack-up device;
    The inner tank roof and the outer tank roof are integrally assembled on the bottom, and the inner tank side plate is attached to the inner tank roof in order from the uppermost one to the lowermost one. A step of sequentially raising the side plates by the jack-up device;
    A step of detachably connecting the attached inner tank side plate and an annular member extending annularly along the outer periphery of the attached inner tank side plate between the inner and outer tanks;
    Providing a plurality of the jack-up devices, and raising the attached inner tub side plate via the connected annular members by the plurality of jack-up devices,
    The method for constructing a cylindrical tank characterized in that the number of connecting portions for detachably connecting the attached inner tank side plate and the annular member is larger than the number of installed jack-up devices .
  2. The method for constructing a cylindrical tank according to claim 1, further comprising a step of providing a conveying device on the annular member and conveying the inner tank side plate along the annular member by the conveying device .
  3. A second transfer device is provided for transferring the inner tank side plate to the transfer device through an opening provided in a side wall of the outer tank, and the inner tank side plate is aligned with the annular member by the second transfer device. The method for constructing a cylindrical tank according to claim 2, further comprising a step of conveying in a direction .
  4. Prior to assembling the side walls of the outer tub, on the bottom of the outer tub, the outer tub side plates are changed from the bottom to the top along the inside of the region where the side walls of the outer tub should be assembled. The process of assembling one by one,
    A step of providing a scaffold on the outer side of the outer tank side plate and assembling a side wall of the outer tank through the scaffold, The cylindrical tank according to any one of claims 1 to 3 , Construction method.
  5. The said outer tank is a product made from prestress concrete , The construction method of the cylindrical tank as described in any one of Claims 1-4 characterized by the above-mentioned.
JP2011007783A 2011-01-18 2011-01-18 Construction method of cylindrical tank Active JP5732262B2 (en)

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JP5905802B2 (en) * 2012-09-14 2016-04-20 大成建設株式会社 Construction method of breakwater using multi-purpose post
JP6018865B2 (en) * 2012-09-28 2016-11-02 株式会社Ihi Construction method of cylindrical tank
JP6127453B2 (en) 2012-11-06 2017-05-17 株式会社Ihi Construction method of cylindrical tank
JP6127459B2 (en) * 2012-11-12 2017-05-17 株式会社Ihi Construction method of cylindrical tank
JP6349652B2 (en) * 2013-08-28 2018-07-04 株式会社Ihi Cylindrical tank construction method, side plate transfer device
JP6345547B2 (en) * 2014-09-03 2018-06-20 鹿島建設株式会社 Construction method of PC / metal double shell tank
JP6371182B2 (en) * 2014-09-29 2018-08-08 鹿島建設株式会社 Tank construction method and tank
JP6448024B2 (en) * 2014-11-19 2019-01-09 株式会社Ihi Jackup system tuning method and cylindrical tank construction method
JP6465488B2 (en) * 2015-09-11 2019-02-06 株式会社Ihi Construction method of cylindrical tank
JP6461757B2 (en) * 2015-09-11 2019-01-30 株式会社Ihi Construction method of cylindrical tank

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JPH0257183B2 (en) * 1983-04-05 1990-12-04 Ishii Tekkosho Kk
JPS6414478A (en) * 1987-07-09 1989-01-18 Mitsubishi Heavy Ind Ltd Method of assembling construction of tank
JPH0762924A (en) * 1993-08-23 1995-03-07 Mitsubishi Heavy Ind Ltd Construction method for concrete outer tank low-temperature tank
JP2002181300A (en) * 2000-12-14 2002-06-26 Ishikawajima Harima Heavy Ind Co Ltd Carrying-in device for inner tank side plate

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