WO2014073239A1 - 円筒型タンクの構築方法 - Google Patents
円筒型タンクの構築方法 Download PDFInfo
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- WO2014073239A1 WO2014073239A1 PCT/JP2013/067853 JP2013067853W WO2014073239A1 WO 2014073239 A1 WO2014073239 A1 WO 2014073239A1 JP 2013067853 W JP2013067853 W JP 2013067853W WO 2014073239 A1 WO2014073239 A1 WO 2014073239A1
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- roof
- outer tub
- tank
- jack
- tub
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
- E04B7/10—Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
- E04B7/10—Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
- E04B7/102—Shell structures
-
- 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
-
- 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
- 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
- E04H7/065—Containers for fluids or gases; Supports therefor mainly of metal with vertical axis roof constructions
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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
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/06—Large containers rigid cylindrical
- B65D88/08—Large containers rigid cylindrical with a vertical axis
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/04—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for structures of spherical, spheroid or similar shape, or for cupola structures of circular or polygonal horizontal or vertical section; Inflatable forms
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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
-
- 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
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
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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
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
- E04H7/26—Constructions, with or without perforated walls, depending on the use of specified materials mainly of concrete, e.g. reinforced concrete or other stone-like materials
- E04H7/28—Constructions, with or without perforated walls, depending on the use of specified materials mainly of concrete, e.g. reinforced concrete or other stone-like materials composed of special building elements
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- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
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- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/032—Orientation with substantially vertical main axis
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- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
-
- 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
- F17C2203/0636—Metals
Definitions
- the present invention relates to a method for constructing a cylindrical tank. This application claims priority based on Japanese Patent Application No. 2012-244690 for which it applied to Japan on November 6, 2012, and uses the content here.
- a cylindrical tank having a structure 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 method for constructing a cylindrical tank having a metal inner tank and a PC (precast) concrete outer tank.
- a PC side wall as an outer tub is raised from the bottom formed of concrete, the roof assembled on the bottom is air-raised, and the outer tub roof is placed on the top of the PC wall. Installed. Thereafter, an annular portion is laid at the bottom, and an inner tank is raised on the annular portion.
- the inner tank is assembled by welding a plurality of inner tank side plates carried in from the construction opening of the PC wall in an annular shape and welding them in order from the lowest level to the highest level.
- a cylindrical tank which has the function to cool LNG etc. is constructed
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a method for constructing a cylindrical tank that can shorten the construction period.
- a first aspect according to the present invention is a method for constructing a cylindrical tank having a metal inner tub and a concrete outer tub, and is provided outside the bottom of the outer tub. Assembling the side wall of the outer tub at the peripheral edge, assembling the roof portion of the outer tub on the bottom of the outer tub other than the outer peripheral edge, and assembling the side wall of the outer tub, The step of raising the roof portion of the outer tub on the bottom of the outer tub with a jack-up device and holding it on the side wall of the outer tub, and the space below the roof portion of the outer tub generated by the raising, And assembling the inner tub independently of the roof of the outer tub.
- the side wall of the outer tub is assembled at the outer peripheral edge of the bottom of the outer tub, and the roof of the outer tub is assembled on the bottom of the outer tub other than the outer peripheral edge.
- the roof part of the outer tub is assembled to some extent, the roof part is raised by a jack-up device and held on the side wall of the outer tub during assembly, and a space for assembling the inner tub below the roof part of the outer tub Secure.
- the 2nd aspect which concerns on this invention has the process of assembling in the state hold
- the roof portion of the outer tub before the roof portion of the outer tub is finally installed on the top of the side wall of the outer tub, the roof portion of the outer tub is held in the middle of the side wall of the outer tub, It is assembled in advance before completion (for example, including rebar work for placing roof concrete).
- this invention after the assembly of the side wall of an outer tank is completed, it becomes possible to install the roof part of an outer tank to the top part, and to complete an outer tank rapidly.
- the third aspect according to the present invention is to alternately repeat the rise of the inner tank side plate by the jack-up device and the attachment of the next inner tank side plate to the lower side of the raised inner tank side plate, A step of assembling the inner tank.
- the inner tub side plate is raised by the jack-up device, and the inner tub side plate is successively added to the lower side, thereby lowering the addition of the inner tub side plate. Therefore, it is possible to assemble the inner tank safely in a low place while avoiding interference with the roof portion of the outer tank held in the middle of the side wall of the outer tank.
- the side wall of the said outer tank is assembled by placing concrete using the outer tank side plate as an inner formwork.
- the 4th aspect which concerns on this invention is the process of forming the opening part in the said outer tank side plate previously, the process of attaching the anchor part to which the anchor embedded in the said concrete was connected, and the said opening part Supporting the jack-up device via the anchor portion attached to the device.
- the jack-up device supports the weight of the roof portion when raising the roof portion of the outer tub, and supports the weight of the inner tub side plate when raising the inner tub side plate. .
- an anchor portion is attached to an opening provided in advance in the outer tub side plate and integrated with the outer tub side plate. This eliminates the need to secure the strength to support the jack-up device by increasing the thickness of the outer tank side plate, etc., so securing the necessary anchor points while minimizing the thickness of the outer tank side plate Can do.
- the roof of the outer tub can be installed at the location of the jack-up device. Can not. Therefore, in the fifth aspect according to the present invention, the height of the roof portion of the outer tub is regulated by providing a protrusion on the inner peripheral surface of the side wall of the outer tub to be the final installation position of the roof portion of the outer tub. Is done. Moreover, a coupler is provided on the inner peripheral surface of the side wall of the outer tub, and the roof portion of the outer tub is installed on the inner peripheral surface of the side wall of the outer tub through the coupler.
- the roof of the outer tub is It can be quickly installed on the inner peripheral surface of the side wall of the outer tub.
- a method for constructing a cylindrical tank that can shorten the construction period can be obtained.
- the support pile 1 is driven into the ground, and a part of the foundation plate (the bottom of the outer tub) 2 is constructed thereon.
- a part of the foundation slab 2 constructed here is a ring-shaped annular part which is a part where the side wall of the tank stands.
- a PC wall (side wall of the outer tub) 3 is set up on the annular portion of the foundation plate 2 that was constructed in advance. Specifically, the PC wall 3 is raised by assembling the side liner (outer tank side plate) 4 on the foundation plate 2 and placing concrete 5 on the outside of the side liner 4.
- the side liner 4 is a steel liner and doubles as a concrete formwork.
- the leg-mounted base 9 is installed along the inside of the base end portion of the side liner 4.
- the outer tank roof (outer tank roof part) 10 is assembled on the roof frame 8 and the leg frame 9.
- the outer tank roof 10 is assembled by, for example, mounting an aerial work vehicle or the like on the base plate 2 and assembling a steel frame and mounting a roof block thereon. Since the outer tub roof 10 is assembled in a region other than the outer peripheral edge of the foundation plate 2 on which the PC wall 3 is assembled, the assembly of the PC wall 3 and the assembly of the outer tub roof 10 do not interfere with each other. Work can be performed simultaneously in parallel.
- the jack-up device 11 is then installed on the PC wall 3 being assembled, as shown in FIG.
- a plurality of suspension-side jack mounts (suspension points) 12 are installed along the circumferential direction of the tank on the PC wall 3 above the base plate 2 and above the outer peripheral edge of the outer tub roof 10.
- the suspension side jack mount 12 is installed so as to protrude substantially horizontally from the PC wall 3 having a predetermined height toward the inside of the tank.
- the suspension side jack mount 12 is firmly and detachably fixed to an anchor plate (anchor portion) 13 embedded in the PC wall 3 shown in FIG.
- the anchor plate 13 has a strength superior to that of the side liner 4 by connecting a plurality of anchors 14 embedded in the concrete 5.
- the anchor plate 13 is installed by fitting the anchor plate 13 into an opening 15 formed in advance in the side liner 4 and integrating it with the side liner 4 by fillet welding or the like. That is, an appropriate position of the side liner 4 is partially constituted by the anchor plate 13, and the suspension side jack mount 12 is fixed to the anchor plate 13.
- the suspension-side jack mount 12 is fixed and the jack-up device 11 is supported through the anchor plate 13 that is attached to the opening 15 of the side liner 4 and has a partially increased support strength. ing.
- a plurality of suspended-side jack mounts 16 corresponding to the plurality of suspended-side jack mounts 12 are installed on the outer peripheral edge of the outer tub roof 10.
- the suspended-side jack mount 16 is installed so as to protrude substantially horizontally from the outer peripheral edge of the outer tank roof 10 toward the outside of the tank.
- the suspended-side jack mount 16 is detachably fixed to the outer peripheral edge of the outer tub roof 10.
- the suspended-side jack mount 16 may be installed above the outer tank roof 10 instead of the side of the outer tank roof 10 as shown in FIG.
- the jack-up device 11 is installed across the suspended side jack mount 12 and the suspended side jack mount 16.
- the jack-up device 11 is configured as a center hole jack, and has a cylindrical jack main body 11 a suspended below the suspended-side jack mount 16, and a vertical stroke extending to the jack main body 11 a. And a jack-up rod 17 which is held so as to be engaged with the suspension-side jack mount 12 via an equalizer 17a.
- a plurality of jackup devices 11 having the above-described configuration are installed at predetermined intervals along the circumferential direction of the tank.
- the roof mount 8 can be removed when the roof steel frame portion of the outer tub roof 10 is assembled, and when the jack-up device 11 is installed as described above, a part of the leg mount 9 can be removed. it can.
- the weight of the outer tub roof 10 is supported by a plurality of jack-up devices 11.
- the outer tank roof 10 assembled on the base plate 2 is raised by the jack-up device 11. Specifically, when the jack main body 11a is driven to rotate forward, the jack main body 11a rises along with the suspended-side jack mount 16 so as to be transmitted along the jack-up rod 17, and jacks up the outer tub roof 10 being assembled. . By jacking up the outer tank roof 10, the inner tank side plate 20 can be carried under the outer tank roof 10 and a work space for assembling the inner tank can be secured.
- the outer tub roof 10 can be easily raised as compared with the air lasing technique.
- the outer tub roof 10 in order to raise the outer tub roof 10 by air pressure, the outer tub roof 10 must be assembled to the extent that there is no air leakage, and the outer tub roof 10 is halfway as in the present embodiment. It cannot be raised.
- it is necessary to install a blower or the like for blowing air in order to raise the outer tub roof 10 by air pressure, the outer tub roof 10 must be assembled to the extent that there is no air leakage, and the outer tub roof 10 is halfway as in the present embodiment. It cannot be raised.
- it is necessary to install a blower or the like for blowing air it is necessary to assemble the PC wall 3 and the inner tank side plate 20 in advance.
- the outer tub roof 10 raised by the jack-up device 11 is held on the PC wall 3.
- the outer tub roof 10 is held on the PC wall 3 via the holding frame 21 installed in the middle stage of the PC wall 3.
- the holding base 21 is installed so as to protrude substantially horizontally from the PC wall 3 having a predetermined height toward the inside of the tank.
- the holding frame 21 is firmly and detachably fixed to an anchor plate 13 as shown in FIG. 5, for example, embedded in the PC wall 3 in advance.
- the suspension of the suspended side jack base 16 to the outer tank roof 10 is released.
- the weight of the outer tub roof 10 is supported by the holding rack 21.
- the jack body 11a is driven in reverse and lowered to the vicinity of the base plate 2. Then, the space below the outer tank roof 10 can be used for assembling the inner tank side plate 20.
- the suspended side jack mount 16 is separately attached to the inner tank side plate 20, the suspended side jack mount 16 of the outer tank roof 10 may be diverted.
- each inner tank side plate 20 is assembled cyclically
- the inner tank side plate 20 assembled here corresponds to the uppermost stage (the eighth stage in the present embodiment).
- a plurality of suspended side mounting stands 22 corresponding to the plurality of suspended side jack stands 16 are installed on the inner tank side plate 20 assembled in an annular shape.
- the suspended side mounting base 22 is installed so as to protrude substantially horizontally from the outer peripheral surface of the inner tank side plate 20 assembled in an annular shape toward the outside of the tank.
- the suspended-side jack mount 16 of the jack-up device 11 is detachably fixed to the suspended-side mounting mount 22.
- all or part of the weight of the inner tank side plate 20 assembled in an annular shape is supported by the jack-up device 11.
- the inner tank side plate 20 by alternately raising the inner tank side plate 20 by the jack-up device 11 and attaching the next inner tank side plate to the lower side of the raised inner tank side plate 20,
- the inner tank is assembled. Specifically, first, by jacking up the jackup device 11, the inner tank side plate 20 assembled in an annular shape is raised by an amount corresponding to the vertical width of the single inner tank side plate 20.
- the next inner tank side plate 20 is carried into a space formed in the lower part of the inner tank side plate 20 by jacking up through a construction port (not shown) provided in the PC wall 3, and the inner tank side plate 20 is attached with legs. It is lowered onto the gantry 9 and is annularly arranged below the jacked up inner tank side plate 20.
- the inner tank side plates 20 are formed into an integral cylindrical shape.
- the inner tank side plates 20 may be welded together in the vertical direction after the inner tank side plates 20 are connected to each other in the lateral direction outside the tank in advance and formed into an annular shape. In this way, by connecting the plurality of inner tank side plates 20 to each other outside the PC wall 3 with a limited work space, welding work is facilitated and the inner tank can be assembled efficiently.
- the raising of the inner tank side plate 20 by the jack-up device 11 and the attachment of the next inner tank side plate 20 to the lower side of the raised inner tank side plate 20 are alternately repeated, and the inner tank side plate 20 By adding the next inner tank side plate 20 to the lower side, the addition of the inner tank side plate 20 is performed at a low position near the base plate 2. Therefore, it is possible to assemble the inner tank safely in a low place while avoiding interference with the outer tank roof 10 held in the middle stage of the PC wall 3.
- the outer tank roof 10 in the middle of the assembly held on the PC wall 3 is assembled. Specifically, before the outer tank roof 10 is finally installed on the top of the PC wall 3, the reinforcement work for placing concrete in the roof is performed with the outer tank roof 10 held in the middle stage of the PC wall 3. It is assembled to the point before completion. In this embodiment, since the installation of the top part of the PC wall 3 of the outer tank roof 10 is performed via a coupler described later, this rebar work is started when the outer tank roof 10 is at an intermediate point. Thereby, in this embodiment, after the assembly of the PC wall 3 is completed, the outer tub roof 10 can be installed on the top of the PC wall 3 to complete the outer tub quickly.
- the PC wall 3 is assembled at the outer peripheral edge portion of the foundation plate 2 in this way, and the outer tank roof 10 is assembled on the foundation plate 2 other than the outer periphery portion in parallel therewith.
- the jack tank 11 will raise the outer tank roof 10, and it will be hold
- an inner tank can be assembled independently of the outer tank roof 10. Therefore, according to this embodiment, the simultaneous parallel operation
- a thermal corner protection 40 for preventing leakage of tank contents can be provided in the annular portion between the inner and outer tanks.
- the thermal corner protection 40 is constructed using the space below the legged mount 9 using foam glass, pearlite concrete block, or the like.
- the thermal corner protection 40 is a member that protects the corner.
- the thermal corner protection 40 is continuously applied not only to the corner but also to the inside of the base plate 1.
- a jack-up device 11 is then provided on the top of the PC wall 3 as shown in FIG. Specifically, the suspension-side jack mount 12 is fixed to the middle stage of the PC wall 3 and the suspension-side jack mount 12 is fixed to the top of the PC wall 3 via a temporary mount. Fixing to the inner tank side plate 20 is released, and the suspended side jack mount 16 is fixed to the outer peripheral edge of the outer tank roof 10. The jack-up device 11 is installed across the suspended-side jack mount 12 and the suspended-side jack mount 16. When the jack-up device 11 is installed in this way, the holding frame 21 can be removed, and thereafter the holding frame 21 is removed at an appropriate timing.
- the outer tank roof 10 is raised by the jack-up device 11 and installed on the top of the PC wall 3.
- the jack-up device 11 is provided on the side of the PC wall 3 to lift the outer tub roof 10 held in the middle stage of the PC wall 3, the concrete portion of the outer tub roof 10 is placed at the place of the jack-up device 11. It cannot be installed. Therefore, in this method, as shown in FIGS. 11A and 11B, the jackup device 11 is provided on the top of the PC wall 3, and the coupler 30 is provided on the inner peripheral surface of the PC wall 3. The concrete part is installed. In FIG. 11A and FIG. 11B, the placed concrete 5 is not shown.
- FIG. 11A shows a state before the outer tank roof 10 is installed.
- the vicinity of the top of the PC wall 3 has a configuration as shown in FIG. 11A, and a pre-assembled part of the structure of the side liner 4 is mounted on the upper end.
- An angle (projection) 31 is provided on the inner peripheral surface of the PC wall 3.
- the angle 31 is installed so as to protrude substantially horizontally from the PC wall 3 having a predetermined height toward the inside of the tank.
- a plurality of couplers 30 are provided above the angle 31 and connect the reinforcing bars 32 of the outer tub roof 10 to the inner peripheral surface of the PC wall 3.
- FIG. 11B shows a state after the outer tank roof 10 is installed.
- the rising height of the outer tub roof 10 is regulated by the angle 31 provided on the inner peripheral surface of the PC wall 3. That is, the height of the outer tub roof 10 is restricted by a part of the outer peripheral edge of the jacked up outer tub roof 10 engaging with the angle 31 protruding inward from the PC wall 3 to the tank.
- the outer tank roof 10 is fixed to the locked position by welding or the like, and the outer tank roof 10 is installed at a predetermined position.
- the remaining ones of the reinforcing bars 32 laid on the outer tank roof 10 are connected to the coupler 30 so that the concrete portion of the outer tank roof 10 is hit. Ready to set up.
- the reinforcing bar work on the outer tub roof 10 is started while being held in the middle stage of the PC wall 3 as shown in FIGS.
- the outer tank roof 10 can be quickly installed on the top of the PC wall 3 by connecting the reinforcing bars 32 of the outer tank roof 10 with the coupler 30. That is, the connecting structure using the coupler 30 can start the reinforcing bar work when the outer tank roof 10 is at an intermediate point, independently of the work of the reinforcing bars on the outer tank roof 10. As a result, the start time of the roof frame described later is inevitably advanced.
- a jack-up device 11 is provided in the middle stage of the PC wall 3 as shown in FIG. 12. And by this jackup apparatus 11, an inner tank is assembled to the last. That is, as described above, the raising of the inner tank side plate 20 by the jack-up device 11 and the attachment of the next inner tank side plate 20 to the lower side of the raised inner tank side plate 20 are alternately repeated, and the inner tank side plate 20 are sequentially assembled from the uppermost stage to the lowermost stage (8 stages in this embodiment).
- the inner tank when the inner tank is assembled to the end, the inner tank is lowered to a predetermined position on the base plate 2.
- the reason for this is to accurately lower the inner tank to a predetermined position on the base plate 2 in the subsequent process.
- the inner tank side plate 20 on the lower side is thickened corresponding to the relatively large liquid pressure of the content liquid after completion of the tank, but the inner tank side plate 20 on the upper side (especially the uppermost stage) is the inner solution. Since the plate thickness is reduced corresponding to the relatively small hydraulic pressure, it is advantageous in terms of strength to connect the suspended side jack mount 16 below the inner tank side plate 20.
- the legged base 9 is removed, and a cold insulation work for laying a cold insulation material 41 on the foundation plate 2 is performed.
- the cold insulation material 41 is provided with foam glass on the bottom thermal resistance reducing material laid on the base plate 2, and a hard lightweight cellular concrete, a pearlite concrete block, or a structural lightweight at the part where the inner tank is lowered. It is formed by providing concrete blocks and laying an inner tank bottom plate on them.
- an elevating staircase 50 is provided along the PC wall 3, a roof frame 51, a barrel nozzle 52, and the like are provided on the outer tank roof 10, and concrete is placed on the outer tank roof 10.
- the concrete placement may be performed immediately after the reinforcing bars 32 on the outer tub roof 10 are connected to the coupler 30 in order to quickly perform the construction work on the outer tub roof 10.
- the construction method of the cylindrical tank 100 having the metal inner tank and the concrete outer tank in the present embodiment described above is a process of assembling the PC wall 3 at the outer peripheral edge of the base plate 2.
- the outer tub roof 10 on the base slab 2 is raised by the jack-up device 11.
- the outer tub roof 10 is installed on the top thereof, The outer tank can be completed quickly.
- the inner tank is repeatedly repeated by alternately raising the inner tank side plate 20 by the jack-up device 11 and attaching the next inner tank side plate 20 to the lower side of the raised inner tank side plate 20.
- the addition of the inner tank side plate 20 becomes a low position, avoiding interference with the outer tank roof 10 held in the middle stage of the PC wall 3, and a safe inner tank at a low place. Assembly work is possible.
- the PC wall 3 is assembled by placing concrete using the side liner 4 as an inner mold. Further, the step of forming the opening 15 in the side liner 4 in advance, the step of attaching the anchor plate 13 to which the anchor 14 embedded in the concrete is connected to the opening 15, and the anchor plate 13 attached to the opening 15 are used. And the step of supporting the jackup device 11, it is not necessary to secure the strength to support the jackup device 11 by increasing the thickness of the side liner 4. Necessary anchor points can be secured while minimizing to the necessary minimum.
- the jackup device 11 is provided on the top of the PC wall 3, the step of raising the outer tub roof 10, and the angle 31 is provided on the inner peripheral surface of the PC wall 3, Adopting a step of regulating the rising height of the outer tub roof 10 and a step of attaching the outer tub roof 10 whose height is regulated by the angle 31 to the inner peripheral surface of the PC wall 3 via the coupler 30.
- the reinforcing bar work on the outer tank roof 10 is started while being held in the middle stage of the PC wall 3, and after the assembly of the PC wall 3 is completed, the outer tank is placed on the inner peripheral surface of the PC wall 3 via the coupler 30.
- the roof 10 can be quickly installed.
- the method of lifting the outer tub roof 10 with the jack-up device 11 has been described.
- the type of the jack-up device 11 may be changed to push up the outer tub roof 10.
- a conventional structure can be adopted without a structure.
- the method of lifting the outer tank roof 10 with the jack-up device 11 has been described.
- the type of the jack-up device 11 is not limited to this form, and for example, the positions of the jack body 11a and the equalizer 17a It may be a form in which the relationship is upside down.
- the method of lifting the inner tank side plate 20 with the jackup device 11 has been described.
- the type of the jackup device 11 may be changed to push up the inner tank side plate 20.
- the jackup device 11 for lifting the outer tank roof 10 is prepared and used for one set, so that the necessary jackup device 11 is used. Can be reduced.
- the outer tank roof 10 being assembled is jacked up and held in the middle stage of the PC wall 3, but for example, the suspension deck 43 and the roof frame 51 on the foundation plate 2 It is also possible to assemble up to the barrel nozzle 52 and the like, jack up the almost completed outer tub roof 10 and hold it on the middle stage of the PC wall 3. In this case, it is necessary to take into consideration the influence on the roof top frame 51 due to the deformation of the steel frame portion of the outer tank roof 10 related to the concrete placement of the outer tank roof 10.
- the jackup device 11 is provided via the anchor plate 13 to support the outer tub roof 10 or the like.
- the opening 15 may be provided depending on the magnitude of the load to be supported. Ensuring a reaction force sufficient to support the outer tank roof 10 and the like by placing an additional concrete stud on the side liner 4 without depositing and depositing the load of the outer tank roof 10 or the like on a support having a stay or the like. Is also possible.
- the common jackup device 11 is used for jacking up the outer tub roof 10 and jacking up the inner tub side plate 20, but a dedicated jackup device may be used. If a dedicated jack-up device is used, it is almost unnecessary to change the installation position of the jack-up device as in the above embodiment, but the number of devices increases, so that it depends on the scale of the cylindrical tank 100 to be constructed. It is preferable to select any suitable one.
- a method for constructing a cylindrical tank that can shorten the construction period can be obtained.
Abstract
Description
本願は、2012年11月6日に日本に出願された特願2012-244690号に基づき優先権を主張し、その内容をここに援用する。
本発明に係る第一の態様では、外槽の底部の外周縁部で外槽の側壁が組み上げられ、それと並行して外周縁部以外の外槽の底部上で外槽の屋根部が組み立てられる。そして、外槽の屋根部がある程度組み立てられたら、この屋根部をジャッキアップ装置により上昇させて組み上げ途中の外槽の側壁に保持させ、外槽の屋根部の下方に内槽を組み立てるための空間を確保する。これにより、本発明では、外槽の側壁の組み上げ、及び外槽の屋根部の組み立て、及び内槽の組み立ての同時並行作業が可能となるため、工期の大幅な短縮化が可能となる。
本発明に係る第二の態様では、外槽の屋根部を最終的に外槽の側壁の頂部に据え付ける前に、外槽の屋根部が、外槽の側壁の中段に保持された状態で、予め完成の手前(例えば屋根コンクリート打設のための鉄筋作業を含む)まで組み立てられる。これにより、本発明では、外槽の側壁の組み上げが完成した後、その頂部へ外槽の屋根部を据え付けて、外槽を速やかに完成させることが可能となる。
本発明に係る第三の態様では、内槽側板をジャッキアップ装置により上昇させつつ、順次その下に内槽側板を継ぎ足していくことで、内槽側板の継ぎ足しが低位置となる。そのため、外槽の側壁の中段に保持されている外槽の屋根部との干渉を避けつつ、低所での安全な内槽の組み立て作業が可能となる。
本発明に係る第四の態様では、ジャッキアップ装置は外槽の屋根部を上昇させる際には屋根部の重量を支え、また、内槽側板を上昇させる際には内槽側板の重量を支える。このジャッキアップ装置にかかる荷重を外槽の側壁で受けさせるために、外槽側板に予め設けられた開口部にアンカー部を取り付けて、外槽側板と一体化させる。これにより、外槽側板の板厚を厚くする等してジャッキアップ装置を支える強度を確保する必要がなくなるため、外槽側板の板厚を必要最小限にしつつ、必要なアンカー点を確保することができる。
外槽の側壁の中段に保持されていた外槽の屋根部を引き上げるためにジャッキアップ装置を外槽の側壁の頂部に設けると、ジャッキアップ装置の場所には外槽の屋根部を据え付けることができない。そのため、本発明に係る第五の態様では、外槽の側壁の内周面に突起部を設けて外槽の屋根部の最終設置位置とすることで、外槽の屋根部の高さが規制される。また、外槽の側壁の内周面にカプラーを設けて、このカプラーを介して外槽の屋根部が外槽の側壁の内周面に据え付けられる。これにより、例えば外槽の側壁の中段に保持された状態で外槽の屋根部での鉄筋作業を開始し、外槽の側壁の組み上げが完成した後、カプラーを介して外槽の屋根部を外槽の側壁の内周面に速やかに据え付けることが可能となる。
図4に戻り、次に、外槽屋根10の外周縁部に、複数の吊側ジャッキ架台12に対応する複数の被吊側ジャッキ架台16が設置される。被吊側ジャッキ架台16は、外槽屋根10の外周縁部からタンク外方に向けて略水平に突出するよう設置される。この被吊側ジャッキ架台16は外槽屋根10の外周縁部に着脱可能に固定される。
なお、この被吊側ジャッキ架台16は、図4に示すような外槽屋根10の側方でなく、外槽屋根10の上方に設置されてもよい。
なお、複数の内槽側板20同士をタンク外で予め横方向に連結し、これをタンク内に搬入して環状に形成した後、上下に並ぶ内槽側板20同士を溶接してもよい。このように複数の内槽側板20同士の連結を作業空間の制限の少ないPC壁3の外側で行うことで、溶接作業が容易になり、効率よく内槽を組み立てることができる。
なお、被吊側ジャッキ架台16の内槽側板20に対する接続位置を下方に変更してもよい。その理由は、その後の工程で内槽を基礎版2上の所定の位置に精度よく下ろすためである。また、下段側の内槽側板20はタンク完成後における内容液の比較的大きな液圧に対応して板厚を厚くしているが、上段側(特に最上段)の内槽側板20は内溶液の比較的小さな液圧に対応して板厚を薄くしているため、被吊側ジャッキ架台16を内槽側板20の下方で接続した方が、強度的には有利となる。
また、PC壁3に沿って昇降階段50が設けられ、外槽屋根10に屋根上架構51やバレルノズル52等が設けられると共に、外槽屋根10にコンクリートが打設される。なお、このコンクリートの打設は、外槽屋根10上における架構工事を早く行うために、外槽屋根10上の鉄筋32をカプラー30に接続した後直ぐに行ってもよい。
最後に、図15に示すように、内外槽間18に保冷材42(例えばパーライト)が充填されて内外槽間保冷工事が行われ、また、外槽屋根10の屋根裏に設けたサスペンションデッキ43に保冷材44(例えばグラスウール)が敷設されて屋根裏保冷工事が行われる。
その後、塗装工事、配管保冷工事等を経て、LNG101を収容する円筒型タンク100の構築が完了する。
3 PC壁(外槽の側壁)、
4 側ライナー(外槽側板)、
5 コンクリート、
10 外槽屋根(外槽の屋根部)、
11 ジャッキアップ装置、
13 アンカープレート(アンカー部)、
14 アンカー、
15 開口部、
20 内槽側板、
30 カプラー、
31 アングル(突起部)、
100 円筒型タンク
Claims (5)
- 金属製の内槽とコンクリート製の外槽とを有する円筒型タンクの構築方法であって、
前記外槽の底部の外周縁部で前記外槽の側壁を組み上げていく工程と、
前記外周縁部以外の前記外槽の底部上で前記外槽の屋根部を組み立てる工程と、
前記外槽の側壁の組み上げ途中で、前記外槽の底部上にある前記外槽の屋根部をジャッキアップ装置により上昇させ、前記外槽の側壁に保持させる工程と、
前記上昇により生じた前記外槽の屋根部の下方の空間で、前記外槽の屋根部と独立して前記内槽を組み立てる工程と、を有する、円筒型タンクの構築方法。 - 前記外槽の屋根部を前記外槽の側壁に保持された状態で組み立てる工程を有する、請求項1に記載の円筒型タンクの構築方法。
- ジャッキアップ装置による内槽側板の上昇と、前記上昇した内槽側板の下側への次の内槽側板の取り付けと、を交互に繰り返すことで、前記内槽を組み立てる工程を有する、請求項1または2に記載の円筒型タンクの構築方法。
- 前記外槽の側壁は、外槽側板を内側型枠としてコンクリートを打設することにより組み上げられ、
前記外槽側板に予め開口部を形成する工程と、
前記コンクリートに埋め込まれるアンカーが接続されたアンカー部を前記開口部に取り付ける工程と、
前記開口部に取り付けられた前記アンカー部を介してジャッキアップ装置を支持させる工程と、を有する、請求項1~3のいずれか一項に記載の円筒型タンクの構築方法。 - 前記外槽の側壁の組み上げ後、前記外槽の側壁の頂部にジャッキアップ装置を設け、前記外槽の屋根部を上昇させる工程と、
前記外槽の側壁の内周面に突起部を設け、前記外槽の屋根部の上昇する高さを規制する工程と、
前記突起部により高さを規制された前記外槽の屋根部を前記外槽の側壁の内周面にカプラーを介して取り付ける工程と、を有する、請求項1~4のいずれか一項に記載の円筒型タンクの構築方法。
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AU2013342823A AU2013342823B2 (en) | 2012-11-06 | 2013-06-28 | Method for constructing cylindrical tank |
SG11201502328YA SG11201502328YA (en) | 2012-11-06 | 2013-06-28 | Method for constructing cylindrical tank |
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CA2886664A CA2886664C (en) | 2012-11-06 | 2013-06-28 | Method for constructing cylindrical tank |
CN201380054323.2A CN104704180B (zh) | 2012-11-06 | 2013-06-28 | 圆筒型罐的构筑方法 |
RU2015114560A RU2611091C2 (ru) | 2012-11-06 | 2013-06-28 | Способ строительства цилиндрического резервуара |
US14/668,416 US9546495B2 (en) | 2012-11-06 | 2015-03-25 | Method for constructing cylindrical tank |
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- 2013-06-28 RU RU2015114560A patent/RU2611091C2/ru active
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CA2886664C (en) | 2017-06-06 |
PH12015500710A1 (en) | 2015-05-18 |
TW201420856A (zh) | 2014-06-01 |
KR20150037970A (ko) | 2015-04-08 |
US20150197953A1 (en) | 2015-07-16 |
AU2013342823B2 (en) | 2016-07-14 |
PH12015500710B1 (en) | 2015-05-18 |
CN104704180B (zh) | 2017-06-23 |
SG11201502328YA (en) | 2015-05-28 |
JP2014092004A (ja) | 2014-05-19 |
IN2015DN02717A (ja) | 2015-09-04 |
JP6127453B2 (ja) | 2017-05-17 |
RU2611091C2 (ru) | 2017-02-21 |
KR101641142B1 (ko) | 2016-07-20 |
RU2015114560A (ru) | 2016-12-27 |
US9546495B2 (en) | 2017-01-17 |
AU2013342823A1 (en) | 2015-04-23 |
CN104704180A (zh) | 2015-06-10 |
MY173268A (en) | 2020-01-09 |
TWI595145B (zh) | 2017-08-11 |
CA2886664A1 (en) | 2014-05-15 |
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