CN102704506B - Offshore submerged foundation structure and construction method thereof - Google Patents
Offshore submerged foundation structure and construction method thereof Download PDFInfo
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- CN102704506B CN102704506B CN201210173523.7A CN201210173523A CN102704506B CN 102704506 B CN102704506 B CN 102704506B CN 201210173523 A CN201210173523 A CN 201210173523A CN 102704506 B CN102704506 B CN 102704506B
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Abstract
The invention discloses an offshore submerged foundation structure and a construction method thereof. The foundation structure comprises a sealed hollow foundation main body, wherein an anchor chain passage with a positioning groove at the bottom end is formed in the center of the foundation main body; and an anchor chain of which one end is fixedly arranged on the top of the foundation main body, the middle part is tightly wedged in the positioning groove through a positioning wedge and the other end is connected to an anchor body is arranged in the anchor chain passage. The construction method of the offshore submerged foundation structure comprises the following steps of: connecting the anchor body to the foundation main body through the anchor chain; charging water body into the foundation main body until the foundation main body sinks to tightly wedge the positioning wedge in the positioning groove; bringing the anchor chain out of the top of the anchor chain passage until the anchor chain is in the preliminarily tensioned vertical state; fixing the anchor chain to the top of the foundation main body; charging gas into the foundation main body to replace the water body in the foundation main body out; and after the overall buoyancy of the foundation main body is increased to a design value, sealing the foundation main body. The offshore submerged foundation structure and the construction method thereof have the advantages of clear core technology principle, reliable and stable operation of the foundation structure, low material cost, simple and quick construction, less required construction equipment, low construction cost and comprehensive manufacturing cost saving.
Description
Technical field
The present invention relates to the foundation structure system of ocean structure engineering, specifically, relate to a kind of sea dive formula foundation structure and construction method that can transportation by driving.
Background technology
In ocean structure engineering, conventional basic pattern comprises that pile foundation, stent-type basis, jacket-type basis, gravity foundation, bucket foundation and floating platform structure etc. are several at present.
Generally, the basic steel pipe pile diameter used of pile foundation, stent-type basis or jacket-type is larger, and weight is heavier, therefore needs pile driving equipment and marine transportation equipment that expense is higher to construct.Gravity type foundation needs the sea bed design to construction marine site in advance to process, the load transmitting can bear larger gravity type foundation, and the expense that processing sea bed needs is higher, especially, in the time that depth condition is darker, the plant equipment relating to and construction material cost are all higher.Bucket foundation is mainly the steel design of long tubular, although work progress is not high to equipment requirement, it is easy to down produce steel work flexing or the situation not in place of sinking in working order, is often difficult to reach the load requirement of the upper works in basis.Floating platform structure has Spar platform or tension leg platform (TLP) at present, its design, the equal more complicated of building and construct, and cost drops into very high, the marine site degree of depth is also had to special requirement, particularly common buoyant foundation structure, construction equipment is had relatively high expectations, and it is higher that work time cost is executed in marine site.
In sum, the existing common common construction weight of marine foundation structure form is larger, and material cost is higher, and work progress requires also all higher to ocean condition, construction equipment and construction period.
Summary of the invention
What the present invention will solve is that the marine common construction weight of formula foundation structure form of diving of tradition is larger, and the technical problem that material and construction cost are higher, provides the latent formula foundation structure in a kind of novel sea and construction method thereof.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of marine formula foundation structure of diving, comprise the basic main body that sealing is hollow, described basic lower body part is cone, top is the cylinder being connected with cone one, cone or ball-crown body, described basic main body top is provided with air inlet/water hole, exhaust/water hole and anchor chain fixed structure, described basic main center is provided with anchor chain passage from top to bottom, described anchor chain channel bottom is provided with locating slot, in described anchor chain passage, be installed with one end and be connected in the anchor chain of described anchor chain fixed structure, on described anchor chain, be provided with the location wedge of wedging in described locating slot, the other end of described anchor chain is connected in the anchor body that is fixed on sea bed.
In described basic main body, be provided with point cabin structure being divided into by steel plate, described in each, between point cabin structure, be provided with hatch door.
Described point of cabin structure is grid-like or cellular.
The material of described basic main body is steel or concrete.
Described anchor body is pilework, suction anchor, dull and stereotyped anchor or gravity anchor one wherein.
Described location wedge is truncated conical shape,, the inner chamber that described locating slot forms is the truncated conical shape matching with described location wedge.
The height of described location wedge is 0.5m-1.5m, and its end face diameter is less than bottom surface diameter 0.2m-0.5m.
Described locating slot top diameter is less than the diameter 0.1m-0.5m of described anchor chain passage.
A construction method for the latent formula foundation structure in sea, comprises the steps:
A. carry out basic main body buoyancy design according to the loading on the structure on basic top, prefabricated foundation main body, anchor body, the first anchor chain and the second anchor chain, determine the installation site of location wedge at the first anchor chain;
B. anchor body is sunk to seabed and is fixed on sea bed, anchor body is connected with the first anchor chain, and the first anchor chain end connects the first buoy as construction cue mark;
C. dryly drag or wet drag basic main body to construction plant, by one end of the second anchor chain the anchor chain passage of basic main center by top penetrate, bottom passes, the second anchor chain traversing through end connects the second buoy that swims in sea;
D. by the indicative function of the first buoy and the second buoy, the the first anchor chain end that connects the first buoy is interconnected with the second anchor chain end that is connected the second buoy, remove the first buoy and the second buoy simultaneously, make the first anchor chain and the second anchor chain be connected to a new anchor chain, be called the 3rd anchor chain;
E. adopt the anchor capstan on auxiliary construction boats and ships that the 3rd anchor chain is taken out of from the anchor chain channel roof of basic main body, until the 3rd anchor chain is the erectility of preliminary tensioning;
F. adopt the pumps water system on auxiliary construction boats and ships in basic main body, to squeeze into water body by air inlet/water hole, basis main body sink pull the plug until the location wedge wedging on the 3rd anchor chain in the locating slot of anchor chain passage, close pumps water system, sealing air inlet/water hole;
G. the part that adopts the anchor capstan on auxiliary construction boats and ships that the 3rd anchor chain is stretched out beyond anchor chain channel roof is disassembled recovery, and the anchor chain fixed structure at the 3rd anchor chain termination of remainder and basic main body top is connected and fixed;
H. adopt the pump plenum system on auxiliary construction boats and ships in basic main body, to squeeze into gas by air inlet/water hole, the gas of squeezing into displaces basic main body by the water body of basic body interior by exhaust/water hole, the buoyancy of basis main body entirety is increased to after design load, close pump plenum system, sealing air inlet/water hole and exhaust/water hole.
In the time that basic main body setting divides cabin structure, the hatch door in basic main body between point cabin structure is all opened in work progress, Close All under the duty after construction.
The invention has the beneficial effects as follows:
(1) design concept of the present invention is complete ingenious, core technology principle is clear and definite, resist the overturning moment occurring in use procedure by the righting moment that the buoyancy of structure self provides, in the time that superstructure thing transmits the loads such as moment of flexure, the arm of force between centre of buoyancy and the anchor point on basis can have the stable state on efficient recovery basis, can ensure the stable condition that basic superstructure system is used.
(2) basic main body of the present invention is hollow structure, and material usage is less; Anchor body is anchor bodily form formula comparatively general in ocean engineering, and construction is simple, and cost is lower; Anchor chain is also the anchor chain of common mooring system, and domestic anchor chain can meet the demands at present, does not need the required anchor chain of tension leg system of import costliness, and therefore the structural meterials cost of mass-type foundation is very low.
(3) construction method of the present invention only needs comparatively general equipment to complete, basis main body transport also can self-floating towing, installation process realizes and anchor chain tensioning by the buoyancy adjustment of foundation structure self, required construction equipment is less, and what relate to is all comparatively common offshore construction equipment, work progress is easy, quick, has significantly reduced marine installation cost and the site operation expense of foundation structure, can significantly save comprehensive cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of the latent formula foundation structure in sea provided by the present invention;
Fig. 2 is the transverse cross sectional figure of basic main body provided by the present invention;
Fig. 3 is the dive construction schematic diagram of second step and the 3rd step in formula foundation structure construction method of sea provided by the present invention;
Fig. 4 is the construction schematic diagram of the 5th step in the latent formula foundation structure construction method in sea provided by the present invention;
Fig. 5 is the construction schematic diagram of the 6th step in the latent formula foundation structure construction method in sea provided by the present invention.
In figure: 1, anchor body; 21, the first anchor chains; 22, the second anchor chains; 23, the three anchor chains; 31, the first buoys; 32, the second buoys; 4, basic main body; 5, point cabin structure; 6, anchor chain passage; 7, air inlet/water hole; 8, exhaust/water hole; 9, location wedge; 10, locating slot.
Detailed description of the invention
For further understanding summary of the invention of the present invention, feature and effect, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
As shown in Figure 1, the present embodiment has disclosed the latent formula foundation structure in a kind of sea, is mainly made up of anchor body 1, anchor chain and basic main body 4.Anchor body 1 is that diameter is the steel pipe piled anchor body 1 that 3m, length are 20m, for sinking to seabed, is fixed on sea bed.Anchor body 1 can be selected pilework, suction anchor, dull and stereotyped anchor or gravity anchor etc.
Basis main body 4 is for the steel confined air core structure of 1000t available buoyancy can be provided, and altogether 15m is high, and basic main body 4 can be selected by Plate Welding and form or concreting forms.Basis main body 4 profiles divide two parts integral type to form, and bottom is the cone that bottom is gathered, and comprises cone and pyramid; Top is cylinder, cone or the ball-crown body that can join with cone, or prism or the pyramid that can join with pyramid, thereby makes basic main body 4 profiles be vertical spindle shape or drop-shaped form.
As shown in Figure 2, preferably can be provided with point cabin structure 5 in the hollow-core construction of basic main body 4, a point cabin structure 5 is made up of steel plate, can be grid-like or cellular.Between each point of cabin structure 5, leave the hatch door that can mutually connect, the opening and closing of hatch door can be by manually controlling, also can be by electrically operated valve control.Basis main body 4 is in the time coming into operation, and hatch door is closed, to ensure being subject to certain destruction and while having a part point cabin structure 5 to intake, remaining point of cabin structure 5 can not be intake in basic main body 4.
The top of basis main body 4 is provided with air inlet/water hole 7 and the exhaust/water hole 8 that can seal, and air inlet/water hole 7 is for passing into water or gas to basic main body 4, and exhaust/water hole 8 is for discharging the water of basic main body 4 inside or gas.Main body 4 tops, basis are also provided with the anchor chain fixed structure for fixing anchor chain, and anchor chain fixed structure specifically can adopt the variety of ways such as snap ring connection, chain connection, locking connection, as long as can all can anchor chain fixation.
The 3rd anchor chain 23, the three anchor chain 23 bottoms that are connected with Fracture Force and are 1500t between anchor body 1 and basic main body 4 upwards 5m At The Height arrange location wedge 9, and location wedge 9 is truncated conical shape, is highly 1.5m, and its end face diameter is 1m, and bottom surface diameter is 1.5m.
Main body 4 centers, basis are also provided with anchor chain passage 6, and anchor chain passage 6, by its bottom that penetrates into of basic main body 4 top verticals, for anchor chain is therefrom passed, and can be free to slide in anchor chain passage 6.The bottom of anchor chain passage 6 is provided with locating slot 10, and the inner chamber that locating slot 10 forms is the truncated conical shape matching with location wedge 9 shape and size, and it is highly 1.5m, and its inner chamber end face diameter is 1.5m, and bottom surface diameter is 1m.
In the anchor chain passage 6 of the 3rd anchor chain 23 by basic main body 4, pass, the anchor chain fixed structure at basic main body 4 tops is fixed at its top, the location wedge 9 at its middle part and the complete interlock wedging of locating slot 10 of anchor chain passage 6 bottoms.Location wedge 9 and locating slot 10 make the 3rd anchor chain 23 in anchor chain passage 6 can keep stable in the time of foundation structure duty, can not produce collision and friction with basic main body 4 bottoms.
The construction method of the latent formula foundation structure in above-mentioned sea, bag following steps:
The first step, draw together the required buoyancy design providing of basic main body 4 according to the loading on the structure on basic top, buoyancy size has determined the structure size of basic main body 4 and the size of the 3rd anchor chain 23 Fracture Force, and can determine that location wedge 9, in the installation site of the first anchor chain 21, is specially the first upwards 5m At The Height of anchor chain 21 bottoms.According to same the 3rd anchor chain 23 of Fracture Force size of design prefabricated foundation main body 4, anchor body 1, the first anchor chain 21 and the second anchor chain 21, the first anchor chains 21 and the second anchor chain 21.
Second step, installs anchor body 1, and anchor body 1 sinks to seabed and is fixed on sea bed, anchor body 1 is connected with the first anchor chain 21 that is provided with location wedge 9, and the end of the first anchor chain 21 is connected with the first buoy 31, and the first buoy 31 floats on sea, as construction cue mark, as shown in Figure 3.
The 3rd step, dryly drag or wet drag basic main body 4 to construction plant, by one end of the second anchor chain 22 the anchor chain passage 6 at basic main body 4 centers by top penetrate, bottom passes, the traversing through end of the second anchor chain 22 connects the second buoy 32, the second buoy 32 is floated to sea under the effect of buoyancy, as shown in Figure 3.
The 4th step, by the indicative function of the first buoy 31 and the second buoy 32, the first anchor chain 21 ends that connect the first buoy 31 are interconnected with the second anchor chain 22 ends that are connected the second buoy 32, remove the first buoy 31 and the second buoy 31 simultaneously, make the first anchor chain 21 and the second anchor chain 22 be connected to a new anchor chain, be called the 3rd anchor chain 23, as shown in Figure 4.
The 5th step, adopts the anchor capstan on auxiliary construction boats and ships that the 3rd anchor chain 23 is taken out of from anchor chain passage 6 tops of basic main body 4, until the 3rd anchor chain 23 is the not painstaking erectility of preliminary tensioning in other words, as shown in Figure 4.
The 6th step, under the state that hatch door in basic main body 4 between point cabin structure 5 is all opened, adopt the pumps water system on auxiliary construction boats and ships, in basic main body 4, squeeze into a certain amount of water body by the air inlet/water hole 7 at basic main body 4 tops, basic main body 4 is all submerged in seawater; Continue to fetch water into basic main body 4, until the location wedge 9 on the 3rd anchor chain 23 fills in the locating slot 10 of anchor chain passage 6, and along with the further sinking of basic main body 4 with the complete interlock wedging of locating slot 10, close pumps water system, sealing air inlet/water hole 7, as shown in Figure 5.
The 7th step, stretches out the part at anchor chain passage 6 tops by the 3rd anchor chain 23 and the anchor chain fixed structure of basic main body 4 is connected and fixed, and is about to the 3rd anchor chain 23 and connects as one with basic main body 4.And the 3rd anchor chain 23 is connected above part and can reclaims by anchor capstan after disassembling with the anchor chain fixed structure of basic main body 4.
The 8th step, adopt the pump plenum system on auxiliary construction boats and ships in basic main body 4, to squeeze into a certain amount of gas by air inlet/water hole 7, the gas of squeezing into by the water body of basic main body 4 inside by displace basic main body 4 by exhaust/water hole 8, the buoyancy of basis main body 4 entirety is increased to after design load, close pump plenum system, sealing air inlet/water hole 7 and exhaust/water hole 8, as shown in Figure 1.Whether the buoyancy of basis main body 4 entirety reaches design load, can measure by the sensor on the 3rd anchor chain 23, and the buoyancy of the tensile force of the 3rd anchor chain 23 and basic main body 4 is equilibrium state.
So far, the marine formula foundation structure construction of diving is complete, is closed in the hatch door between point cabin structure 5 in basic main body 4, can be at basic main body 4 installation top, top works, as offshore wind turbine, offshore anemometer tower, beacon etc.
Claims (1)
1. the construction method of the latent formula foundation structure in sea, it is characterized in that, the latent formula foundation structure in described sea comprises the basic main body that sealing is hollow, described basic lower body part is cone, top is the cylinder being connected with cone one, cone or ball-crown body, described basic main body top is provided with air inlet/water hole, exhaust/water hole and anchor chain fixed structure, described basic main center is provided with anchor chain passage from top to bottom, described anchor chain channel bottom is provided with locating slot, in described anchor chain passage, be installed with one end and be connected in the anchor chain of described anchor chain fixed structure, on described anchor chain, be provided with the location wedge of wedging in described locating slot, the other end of described anchor chain is connected in the anchor body that is fixed on sea bed, in described basic main body, be provided with point cabin structure being divided into by steel plate, described in each, between point cabin structure, be provided with hatch door, described point of cabin structure is grid-like or cellular, the material of described basic main body is steel or concrete, described anchor body is pilework, suction anchor, dull and stereotyped anchor or gravity anchor one wherein, described location wedge is truncated conical shape, and the inner chamber that described locating slot forms is the truncated conical shape matching with described location wedge, the height of described location wedge is 0.5m-1.5m, and its end face diameter is less than bottom surface diameter 0.2m-0.5m, described locating slot top diameter is less than the diameter 0.1m-0.5m of described anchor chain passage, described construction method comprises the steps:
A. carry out basic main body buoyancy design according to the loading on the structure on basic top, prefabricated foundation main body, anchor body, the first anchor chain and the second anchor chain, determine the installation site of location wedge at the first anchor chain;
B. anchor body is sunk to seabed and is fixed on sea bed, anchor body is connected with the first anchor chain, and the first anchor chain end connects the first buoy as construction cue mark;
C. dryly drag or wet drag basic main body to construction plant, by one end of the second anchor chain the anchor chain passage of basic main center by top penetrate, bottom passes, the second anchor chain traversing through end connects the second buoy that swims in sea;
D. by the indicative function of the first buoy and the second buoy, the the first anchor chain end that connects the first buoy is interconnected with the second anchor chain end that is connected the second buoy, remove the first buoy and the second buoy simultaneously, make the first anchor chain and the second anchor chain be connected to a new anchor chain, be called the 3rd anchor chain;
E. adopt the anchor capstan on auxiliary construction boats and ships that the 3rd anchor chain is taken out of from the anchor chain channel roof of basic main body, until the 3rd anchor chain is the erectility of preliminary tensioning;
F. adopt the pumps water system on auxiliary construction boats and ships in basic main body, to squeeze into water body by air inlet/water hole, basis main body sink pull the plug until the location wedge wedging on the 3rd anchor chain in the locating slot of anchor chain passage, close pumps water system, sealing air inlet/water hole;
G. the part that adopts the anchor capstan on auxiliary construction boats and ships that the 3rd anchor chain is stretched out beyond anchor chain channel roof is disassembled recovery, and the anchor chain fixed structure at the 3rd anchor chain termination of remainder and basic main body top is connected and fixed;
H. adopt the pump plenum system on auxiliary construction boats and ships in basic main body, to squeeze into gas by air inlet/water hole, the gas of squeezing into displaces basic main body by the water body of basic body interior by exhaust/water hole, the buoyancy of basis main body entirety is increased to after design load, close pump plenum system, sealing air inlet/water hole and exhaust/water hole;
Hatch door in the main body of basis between point cabin structure is all opened in work progress, Close All under the duty after construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173523.7A CN102704506B (en) | 2012-05-30 | 2012-05-30 | Offshore submerged foundation structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173523.7A CN102704506B (en) | 2012-05-30 | 2012-05-30 | Offshore submerged foundation structure and construction method thereof |
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| CN102704506A CN102704506A (en) | 2012-10-03 |
| CN102704506B true CN102704506B (en) | 2014-07-16 |
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| CN201210173523.7A Expired - Fee Related CN102704506B (en) | 2012-05-30 | 2012-05-30 | Offshore submerged foundation structure and construction method thereof |
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| US6773207B2 (en) * | 2002-02-14 | 2004-08-10 | Rund-Stahl-Bau Gesellschaft M.B.H | Method of lowering a floating body of a floating foundation |
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| CN101966868A (en) * | 2009-07-27 | 2011-02-09 | 刘吉彬 | Amphibian stable floating platform, sinking and floating method of house thereof and application thereof |
| CN102235011A (en) * | 2010-04-27 | 2011-11-09 | 南通大学 | Flexible floating foundation for offshore wind generating sets |
| CN102277878A (en) * | 2011-05-12 | 2011-12-14 | 天津大学 | Floating foundation and construction method thereof |
| CN101612982B (en) * | 2009-08-13 | 2012-05-09 | 上海利策科技有限公司 | Circular floating ocean platform capable of releasing multi-point mooring |
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2012
- 2012-05-30 CN CN201210173523.7A patent/CN102704506B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6773207B2 (en) * | 2002-02-14 | 2004-08-10 | Rund-Stahl-Bau Gesellschaft M.B.H | Method of lowering a floating body of a floating foundation |
| JP2010216273A (en) * | 2009-03-13 | 2010-09-30 | Penta Ocean Construction Co Ltd | Substructure of floating type ocean wind turbine generator |
| CN101966868A (en) * | 2009-07-27 | 2011-02-09 | 刘吉彬 | Amphibian stable floating platform, sinking and floating method of house thereof and application thereof |
| CN101612982B (en) * | 2009-08-13 | 2012-05-09 | 上海利策科技有限公司 | Circular floating ocean platform capable of releasing multi-point mooring |
| CN101768978A (en) * | 2010-01-29 | 2010-07-07 | 天津大学 | At-sea wind generation unit foundation formed by barrel type foundation and mooring rope anchor |
| CN102235011A (en) * | 2010-04-27 | 2011-11-09 | 南通大学 | Flexible floating foundation for offshore wind generating sets |
| CN102277878A (en) * | 2011-05-12 | 2011-12-14 | 天津大学 | Floating foundation and construction method thereof |
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| CN102704506A (en) | 2012-10-03 |
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