CN112478082B - Construction precision control method for large ocean oil and gas module multilayer deck - Google Patents

Construction precision control method for large ocean oil and gas module multilayer deck Download PDF

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CN112478082B
CN112478082B CN202011459658.0A CN202011459658A CN112478082B CN 112478082 B CN112478082 B CN 112478082B CN 202011459658 A CN202011459658 A CN 202011459658A CN 112478082 B CN112478082 B CN 112478082B
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deck
layer
weight
gas module
oil
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CN112478082A (en
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徐玉宝
黄付龙
张阳
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Bomesc Offshore Engineering Co Ltd
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Bomesc Offshore Engineering Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B71/00—Designing vessels; Predicting their performance
    • B63B71/10—Designing vessels; Predicting their performance using computer simulation, e.g. finite element method [FEM] or computational fluid dynamics [CFD]

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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  • Ocean & Marine Engineering (AREA)
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Abstract

The invention discloses a construction precision control method for a large-scale marine oil and gas module multilayer deck, which obtains the amount of sinking K respectively generated by each layer of deck of a marine oil and gas module under unit weight through modeling simulationiThe amount of sinking J of each deck layer caused by the settlement of unit foundationi. Estimation of the weight G of decks and equipment thereon from design drawings and previous ground settlement dataiAnd the settlement l of the foundation after the completion of each decki. Calculating the sunken deformation H of each layer of deck according to the datai. Applying total concave amount H to each deck during constructioniThe same pre-deformation upward projection is adopted to offset the downward sinking of the deck caused by self weight and foundation settlement of each deck. The method can improve the construction precision of the ocean oil and gas module deck.

Description

Construction precision control method for large ocean oil and gas module multilayer deck
Technical Field
The invention relates to a building precision control method of an ocean oil and gas module, in particular to a building precision control method of a large ocean oil and gas module multilayer deck.
Background
With the trend of large-scale ocean oil and gas modules, the total weight of the ocean oil and gas modules is heavier and heavier, and the total weight of the largest ocean oil and gas module reaches 3 ten thousand tons. The ocean module with huge weight can generate huge pressure to the ground in the construction process, thereby causing foundation settlement. Due to the uneven distribution of the oil and gas modules, the foundation settlement is also uneven. The oil and gas module construction site has the largest foundation settlement in the central part and the smallest foundation settlement around the site. The foundation subsides and to make the pad mound of oil gas module take place to subside, because the height that the pad mound of mid portion descends is big than pad mound all around, and each layer deck of oil gas module all can produce recessedly. The depth of such foundation settlement tends to become greater as the oil and gas modules are built, and thus the depth of the sag of the deck due to the foundation settlement becomes greater in order from the upper deck to the lower deck. In addition, the dead weight of the decks of the various layers of oil and gas modules and the various devices thereon can also cause the decks to sag.
Uneven foundation settlement and the dead weight of the deck and equipment on the deck can cause the manufacturing precision of the oil gas module to be reduced, the construction quality of the oil gas module is influenced, and potential safety hazards are brought to offshore oil gas production.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a construction precision control method for a large-scale marine oil and gas module multi-layer deck. By adopting the method, the sinking deformation of the deck of the ocean oil and gas module caused by the foundation settlement and the dead weight of the deck and equipment on the deck can be effectively compensated, and the plane precision of the deck is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the construction precision control method of the large-scale marine oil and gas module multilayer deck comprises the following steps:
step one, respectively calculating to obtain the total weight G of each deck of the ocean oil and gas module and equipment on each deckiAdding the total weight of each layer of deck of the ocean oil and gas module and equipment on each layer of deck to obtain the total weight G of the ocean oil and gas module;
step two, respectively calculating and obtaining the concave amount K respectively generated by each layer of deck of the ocean oil and gas module under the unit weighti；
Step three, respectively calculating the sunken volume h of each layer of deck caused by the weight of all decks and own decks on the upper layer and the weight of equipment on all decks and own decks on the upper layerHeavy loadConcave amount h of each deckHeavy loadThe calculation formula of (2) is as follows:
hheavy loadThe weight of the deck (the sum of the weight of the deck and the weight of the equipment on the deck on the layer, the weight of the deck on all layers above the layer and the weight of the equipment on the deck on all layers above the layer) x the sinking rate K of the deck on the layer under the action of unit weight forcei；
Step four, obtaining the sinking amount J of each layer of deck caused by unit foundation settlement through simulation calculationi；
Step five, estimating the total foundation settlement l of the constructed marine oil and gas module from the beginning to the completion according to the foundation settlement data in the construction process of the previous marine oil and gas module0Respectively calculating the settlement l of the foundation after each deck is finishedi，li＝l0X (deck weight of all layers above each layer and on each layerThe sum of the total weight of the equipment of all layers above each layer deck) ÷ G;
step six, adopting a formula Ji×liThe concave amount h of each layer of deck caused by foundation settlement is obtained by calculationSink with a metal plate；
Step seven, adopting a formula hHeavy load+hSink with a metal plateCalculating to obtain the total concave quantity H of each layer of decki；
Step eight, respectively applying the total concave amount H of each layer of deck plate in the construction processiThe same pre-deformation upward projection is adopted to offset the downward sinking of the deck caused by self weight and foundation settlement of each deck.
The method can effectively compensate the sinking deformation of the deck of the ocean oil and gas module caused by the foundation settlement and the dead weight of the deck and the equipment on the deck. By the method, the unevenness of the deck in the construction process of the ocean oil and gas module can be effectively compensated, and the construction precision of the deck of the ocean oil and gas module is improved.
Drawings
FIG. 1 is a distribution diagram of marine oil and gas module pad piers;
FIG. 2 is a diagram of deck deformation without unevenness compensation for marine oil and gas modules;
FIG. 3 is a diagram of deck deformation when the marine oil and gas module takes unevenness compensation.
Detailed Description
The method of the present invention is further described below with reference to the accompanying drawings.
The invention discloses a construction precision control method for a large-scale marine oil and gas module multilayer deck, which comprises the following steps:
step one, respectively calculating to obtain the total weight G of each layer of deck and equipment on each layer of deck of the ocean oil and gas module 2iAdding the total weight of each layer of deck of the ocean oil and gas module and equipment on each layer of deck to obtain the total weight G of the ocean oil and gas module;
take four layers of decks as an example: the quality of steel used for four layers of decks is respectively obtained through design drawings, and the weight of equipment arranged on each deck layer is added on the basis of the quality, so that the first layer of deck (namely the lowest layer of deck, as shown in the figure) is estimatedDeck 2-1) and weight G of equipment thereon1The weight G of the second deck and the equipment thereon2Weight G of third deck and equipment thereon3And weight G of fourth deck and equipment thereon4. Calculating the total weight G of the ocean oil gas module1+G2+G3+G4；
Step two, respectively calculating and obtaining the concave amount K respectively generated by each layer of deck of the ocean oil and gas module under the unit weighti；
As an implementation mode of the invention, a model is established for an ocean oil and gas module in Ansys analysis software, force of unit weight is respectively applied to each layer of deck of the model, and the sinking rate K generated by each layer of deck under the unit weight is obtained through simulationi(ii) a Such as: respectively applying force of unit weight to the first layer deck, the second layer deck, the third layer deck and the fourth layer deck, and simulating to obtain the sinking rate K of the first layer deck under the action of the force of the unit weight1The concave amount K of the second deck under the action of unit weight force2The sinking K of the third deck under the action of unit weight force3And the sinking K of the fourth deck under the action of unit weight force4。
Of course, the concave amount K of each layer of deck under the action of the unit weight force can also be obtained by adopting other modeling simulation methodsi。
Step three, respectively calculating the sunken volume h of each layer of deck caused by the weight of all decks and own decks on the upper layer and the weight of equipment on all decks and own decks on the upper layerHeavy loadConcave amount h of each deckHeavy loadThe calculation formula of (2) is as follows:
hheavy loadThe weight of the deck (the sum of the weight of the deck and the weight of the equipment on the deck on the layer, the weight of the deck on all layers above the layer and the weight of the equipment on the deck on all layers above the layer) x the sinking rate K of the deck on the layer under the action of unit weight forcei；
Such as: sag h of first deck1The concave amount h of the second deck2The concave amount h of the third deck3And the sag h of the fourth deck4The calculation formulas are respectively as follows:
h1＝K1×(G1+G2+G3+G4)
h2＝K2×(G2+G3+G4)
h3＝K3×(G3+G4)
h4＝K4×G4
step four, obtaining the sinking amount J of each layer of deck caused by unit foundation settlement through simulation calculationi。
As an embodiment of the invention, firstly, a ground, a pad pier erected on the ground 3 and a marine oil and gas module supported on the pad pier are respectively modeled in Ansys analysis software, four pad piers 1-1, 1-4, 1-8 and 1-5 at the side are respectively erected at four corners of the marine oil and gas module, four pad piers 1-2, 1-3, 1-6 and 1-7 at the middle are respectively erected below two long sides of the marine oil and gas module and are arranged at equal intervals below each long side of the marine oil and gas module; in the second step, a downward unit displacement is applied to the pad pier in the middle of the model, thereby simulating foundation settlement. Simulating to obtain the downward sinking J of each layer deck caused by unit foundation settlementiThe amount of sag J of the first deck1The concave amount J of the second deck2Third layer of deck sag J3And the sag J of the fourth deck4。
Fifthly, the total foundation settlement of the ocean oil and gas module from the beginning to the completion is in direct proportion to the total weight of the oil and gas module, and the total foundation settlement l from the beginning to the completion of the construction of the ocean oil and gas module under construction is estimated according to the foundation settlement data in the construction process of the previous ocean oil and gas module0. Respectively calculating the settlement l of the foundation after each deck is finishedi，li＝l0X (sum of deck weight of all layers above each layer deck and total weight of equipment of all layers above each layer deck) ÷ G;
such as: first layer deck construction is completed to ocean oil gasSettlement of foundation l for complete module1；
Foundation settlement l from second deck construction completion to ocean oil and gas module overall completion2；
Foundation settlement l from completion of third deck construction to overall completion of ocean oil and gas module3；
Foundation settlement l from completion of fourth deck construction to overall completion of ocean oil and gas module4；
The calculation is as follows:
l1＝l0×(G2+G3+G4)÷G
l2＝l0×(G3+G4)÷G
l3＝l0×G4÷G
l4＝0
the total settlement of the foundation is proportional to the total weight of the marine oil and gas module. While the amount of foundation settlement increases linearly with the completed construction weight of the marine oil and gas module, 14And 0, the oil and gas module is built after the fourth layer of module is built, and then the ship is loaded, so that the foundation settlement has no influence on the oil and gas module.
Step six, adopting a formula Ji×liThe concave amount h of each layer of deck caused by foundation settlement is obtained by calculationSink with a metal plate。
Such as: sag h of first deck5The concave amount h of the second deck6The concave amount h of the third deck 2-37And the sag h of the fourth deck8The calculation is as follows:
h5＝J1×l1
h6＝J2×I2
h7＝J3×I3
h8＝J4×I4
step seven, adopting a formula hHeavy load+hSink with a metal plateCalculating to obtain the total concave quantity H of each layer of decki。
Total sag H of the first deck1The total concave amount H of the second deck2Total sag H of the third deck3And total sag H of the fourth deck4The calculation is as follows:
H1＝h1+h5
H2＝h2+h6
H3＝h3+h7
H4＝h4+h8
step eight, respectively applying the total concave amount H of each layer of deck plate in the construction processiThe same pre-deformation upward projection is adopted to offset the downward sinking of the deck caused by self weight and foundation settlement of each deck.
Such as: the first layer of deck, the second layer of deck, the third layer of deck and the fourth layer of deck are H1、H2、H3、H4The amount of protrusion of (a). The upward convex amount is used as a pre-deformation amount to offset the downward concave amount of the deck caused by self weight and foundation settlement of each layer of deck.

Claims (3)

1. The construction precision control method of the large-scale marine oil and gas module multilayer deck is characterized by comprising the following steps:
step one, respectively calculating to obtain the total weight G of each deck of the ocean oil and gas module and equipment on each deckiAdding the total weight of each layer of deck of the ocean oil and gas module and equipment on each layer of deck to obtain the total weight G of the ocean oil and gas module;
step two, respectively calculating and obtaining the concave amount K respectively generated by each layer of deck of the ocean oil and gas module under the unit weighti；
Step three, respectively calculating the sinking amount h of each layer of deck due to the weight of all the upper deck and the own deck as well as the weight of the equipment on all the upper deck and the weight of the equipment on the own deckHeavy loadConcave amount h of each deckHeavy loadThe calculation formula of (2) is as follows:
hheavy load(weight of own deck and on deck of the layer)The sum of the weight of the equipment, the weight of the deck of all layers above the layer and the weight of the equipment on the deck of all layers above the layer) multiplied by the sinking rate K of the deck of the layer under the action of unit weight forcei；
Step four, obtaining the sinking amount J of each layer of deck caused by unit foundation settlement through simulation calculationi；
Step five, estimating the total foundation settlement l of the constructed marine oil and gas module from the beginning to the completion according to the foundation settlement data in the construction process of the previous marine oil and gas module0Respectively calculating the settlement l of the foundation after each deck is finishedi，li＝l0X (sum of deck weight of all layers above each layer deck and total weight of equipment of all layers above each layer deck) ÷ G;
step six, adopting a formula Ji×liThe concave amount h of each layer of deck caused by foundation settlement is obtained by calculationSink with a metal plate；
Step seven, adopting a formula hHeavy load+hSink with a metal plateCalculating to obtain the total concave quantity H of each layer of decki；
Step eight, respectively applying the total concave amount H of each layer of deck plate in the construction processiThe same pre-deformation upward projection is adopted to offset the downward sinking of the deck caused by self weight and foundation settlement of each deck.
2. The large-scale marine oil and gas module multi-deck construction accuracy control method of claim 1, characterized in that: the specific process of the second step is as follows: modeling the ocean oil and gas module in Ansys analysis software, applying force of unit weight to each layer of deck of the ocean oil and gas model respectively, and simulating to obtain the concave amount K generated by each layer of deck under the unit weighti。
3. The large-scale marine oil and gas module multi-deck construction accuracy control method according to claim 1 or 2, characterized in that: the specific process of the step four is as follows:
the method comprises the following steps that firstly, a ground surface, pad piers erected on the ground surface and ocean oil and gas modules supported on the pad piers are modeled in Ansys analysis software respectively, four pad piers on the side edges are erected at four corners of the ocean oil and gas modules respectively, four pad piers in the middle are erected below two long side edges of the ocean oil and gas modules respectively, and the pad piers located below each long side edge of the ocean oil and gas module are arranged at equal intervals;
secondly, applying downward unit displacement to the middle pad pier to simulate foundation settlement, and obtaining the sunken amount J of each layer of deck caused by the unit foundation settlement through simulationi。
CN202011459658.0A 2020-12-11 2020-12-11 Construction precision control method for large ocean oil and gas module multilayer deck Active CN112478082B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007107195A (en) * 2005-09-16 2007-04-26 Yokogawa Bridge Corp Steel floor slab reinforcing construction method and precast reinforcing slab used therefor
CN201974164U (en) * 2010-12-30 2011-09-14 中国海洋石油总公司 Large marine structure soft foundation weighing fulcrum displacement measurement device with high accuracy
CN103324842A (en) * 2013-06-08 2013-09-25 博迈科海洋工程股份有限公司 Method for positioning temporary supporting point of large structure base layer deck piece
CN104764413A (en) * 2014-12-22 2015-07-08 博迈科海洋工程股份有限公司 Novel method for measuring welding deformation of marine structure deck plate
CN107554687A (en) * 2017-07-24 2018-01-09 中航威海船厂有限公司 A kind of quick calculation method of high-end deep water ocean engineering platform light weight
CN110284529A (en) * 2018-03-19 2019-09-27 天津大学（青岛）海洋工程研究院有限公司 Foundation deformation measurement method and device in larger hydrocarbon platform construction
CN111516823A (en) * 2020-04-24 2020-08-11 江苏科技大学 Dynamic compensation method for ship section construction curved surface deformation
CN113779749A (en) * 2021-07-20 2021-12-10 海洋石油工程股份有限公司 Method for evaluating influence of construction site settlement on upper module of ocean platform

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007107195A (en) * 2005-09-16 2007-04-26 Yokogawa Bridge Corp Steel floor slab reinforcing construction method and precast reinforcing slab used therefor
CN201974164U (en) * 2010-12-30 2011-09-14 中国海洋石油总公司 Large marine structure soft foundation weighing fulcrum displacement measurement device with high accuracy
CN103324842A (en) * 2013-06-08 2013-09-25 博迈科海洋工程股份有限公司 Method for positioning temporary supporting point of large structure base layer deck piece
CN104764413A (en) * 2014-12-22 2015-07-08 博迈科海洋工程股份有限公司 Novel method for measuring welding deformation of marine structure deck plate
CN107554687A (en) * 2017-07-24 2018-01-09 中航威海船厂有限公司 A kind of quick calculation method of high-end deep water ocean engineering platform light weight
CN110284529A (en) * 2018-03-19 2019-09-27 天津大学（青岛）海洋工程研究院有限公司 Foundation deformation measurement method and device in larger hydrocarbon platform construction
CN111516823A (en) * 2020-04-24 2020-08-11 江苏科技大学 Dynamic compensation method for ship section construction curved surface deformation
CN113779749A (en) * 2021-07-20 2021-12-10 海洋石油工程股份有限公司 Method for evaluating influence of construction site settlement on upper module of ocean platform

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