CN103758147B - A kind of gravity type offshore wind crew base and towage thereof and sinking method - Google Patents

A kind of gravity type offshore wind crew base and towage thereof and sinking method Download PDF

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Publication number
CN103758147B
CN103758147B CN201410049408.8A CN201410049408A CN103758147B CN 103758147 B CN103758147 B CN 103758147B CN 201410049408 A CN201410049408 A CN 201410049408A CN 103758147 B CN103758147 B CN 103758147B
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buoyancy tank
floor
basic body
towage
base plate
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CN103758147A (en
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王海军
练继建
吴慕丹
燕翔
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Frontier Technology Research Institute of Tianjin University Co Ltd
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Frontier Technology Research Institute of Tianjin University Co Ltd
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Abstract

A kind of can the gravity type offshore wind crew base of towage, be made up of linkage section, basic body, sandstone preloading and buoyancy tank, basic body is bored cylinder by sole plate and steel concrete and is formed, sole plate comprises base plate and floor, the outer rim of base plate is provided with base plate collar tie beam, circular bottom plate is fixed by grouting and rock foundation, and the top of floor is provided with floor collar tie beam; The top of linkage section reinforced concrete cylinder is connected with blower fan tower barrel by flange; Buoyancy tank is the containment housing of welded steel, and the top of buoyancy tank and bottom are not provided with outlet valve and draining valve; Buoyancy tank is connected with outside floor circle beam setting connecting elements and by pin to be fixed for buoyancy tank or withdraws from.Advantage of the present invention is: this gravity type offshore wind crew base center of gravity is low, has good stability and safety in towage transport and sinking watching; This basic material consumption is few, prefabricate and install is convenient and swift, and short construction period, construction cost are low, has good economy, is conducive to applying.

Description

A kind of gravity type offshore wind crew base and towage thereof and sinking method
Technical field
The present invention relates to constructing of offshore wind power foundation, particularly a kind of gravity type offshore wind crew base and towage thereof and sinking method.
Background technology
At present, the type of offshore wind power foundation mainly contains single-pile foundation, tripod basis, gravity type foundation, cylindrical foundation and floatation type basis, and using maximum is single-pile foundation and gravity type foundation.Traditional gravity type foundation maintains Stability Analysis of Structures with himself weight, and the bodily form is simple, design is easy, but himself weight is large, and work progress can only adopt lifting to complete substantially, and construction cost is high, and difficulty of construction is large, dangerous high, less economical.And the construction method adopting towage technology to replace hoisting technology can improve efficiency of construction greatly, and significantly reduce costs.Therefore, the gravity type foundation form of towage great development can have been had in recent years.But although the gravity type foundation form of carrying out towage existing can realize the ability of towage, and the floating stability in towage and sinking watching thereof still exists many hidden danger.
This foundation pattern completes towage work by external buoyancy tank.Meanwhile, because the bodily form is good, this foundation structure all has higher floating stability in towage transport and sinking watching.In addition, this foundation structure bodily form is light, and flexibility is strong, good economy performance.
Summary of the invention
Object of the present invention is intended to for above-mentioned existing problems, and provide a kind of gravity type offshore wind crew base and towage thereof and sinking method, this basis has good towage ability, and novel structure, build are simple, is convenient to manufacture and construction, and economic benefit is good.
Technical scheme of the present invention:
Can the gravity type offshore wind crew base of towage, be made up of linkage section, basic body, sandstone preloading and buoyancy tank, linkage section is reinforced concrete cylinder, basic body is positioned at below horizontal plane, bore cylinder by sole plate and steel concrete to form, sole plate is concrete component, comprise base plate and floor, the outer rim of circular bottom plate is provided with base plate collar tie beam, circular bottom plate is fixed by grouting and rock foundation, floor is radial vertically uniform around steel concrete cone cylinder, the quantity of floor is 4-8 block, the top of floor is provided with 1-3 floor collar tie beam, the base of floor is connected with base plate and base plate collar tie beam, inner side edge and the steel concrete of floor are bored drum outer wall and are connected, the top margin of floor is connected with floor collar tie beam base, be positioned at the center of sole plate circular bottom plate bottom steel concrete cone cylinder and be integrally connected with base plate, the diameter at steel concrete cone cylinder top is identical with the diameter of linkage section reinforced concrete cylinder, be equipped with prestressed reinforcement in the barrel of steel concrete cone cylinder and reinforced concrete cylinder and be integrally connected by fluid concrete, the top of linkage section reinforced concrete cylinder is connected with blower fan tower barrel by flange, doses sandstone preloading in steel concrete cone cylinder, buoyancy tank is the containment housing of welded steel, and the height of buoyancy tank is equal with the distance of draw-in groove between base plate collar tie beam and floor top cycle beam and can free in and out, and the top of buoyancy tank and bottom are respectively equipped with outlet valve and draining valve, buoyancy tank is connected with outside floor circle beam setting connecting elements and by pin to be fixed for buoyancy tank or withdraws from.
Described can the towage of gravity type offshore wind crew base of towage and a sinking method, step is as follows:
1) prefabricatedly in dock complete basic body and airtight buoyancy tank, in buoyancy tank, after inflation, close outlet valve and draining valve;
2) connect in draw-in groove buoyancy tank being placed in basic body and by pin and fix with basic body;
3) dock water filling, basic body is floating gradually with water body rising, when dock water body is identical with outer water body water level, open caisson, sail towage ship into, basic body is connected with ship, start towage operation, when after basic towage to assigned address, basic body and ship disconnect, and carry out sinking operation;
4) open buoyancy tank outlet valve and draining valve, buoyancy tank internal gas is replaced as water, simultaneously in basic body internal water flooding, along with quality increases, basic body and buoyancy tank synchronously sink;
5) behind basic body location, buoyancy tank withdrawn from by dismounting pin, again by outlet valve and the draining valve of buoyancy tank, buoyancy tank internal water is replaced into gas, and buoyancy tank floats and reclaims, and completes sinking work;
6) finally in the cavity of steel concrete cone cylinder and in the draw-in groove of basic body, sandstone preloading is added to improve the stability of structure further.
The invention has the beneficial effects as follows:
This gravity type offshore wind crew base center of gravity is low, has good stability and safety in towage transport and sinking watching; For buoyancy tank and the connecting elements convenient disassembly thereof of towage and sinking, recyclable recycling; This basic material consumption is few, prefabricate and install is convenient and swift, and short construction period, construction cost are low, has good economy, is conducive to applying.
Accompanying drawing explanation
Fig. 1 is this gravity type offshore wind crew base perspective view.
Fig. 2 is this gravity type offshore wind crew base sectional structure schematic diagram.
Fig. 3 is this gravity type offshore wind crew base plan structure schematic diagram.
In figure: 1. linkage section 2. basic body 3. sandstone preloading 4. buoyancy tank 5. base plate
6. floor 7. base plate collar tie beam 8. floor collar tie beam 9. prestressed reinforcement 10. outlet valve
11. draining valve 12. connecting elements 13. pins
Detailed description of the invention
Embodiment:
Can the gravity type offshore wind crew base of towage, as Figure 1-3, be made up of linkage section 1, basic body 2, sandstone preloading 3 and buoyancy tank 4, linkage section 1 is reinforced concrete cylinder, basic body 2 is positioned at below horizontal plane, bore cylinder by sole plate and steel concrete to form, sole plate is concrete component, comprise base plate 5 and floor 6, the outer rim of circular bottom plate is provided with base plate collar tie beam 7, circular bottom plate 5 is fixed by grouting and rock foundation, floor 6 is radial vertically uniform around steel concrete cone cylinder, the quantity of floor 6 is 6 pieces, the top of floor 6 is provided with 2 floor collar tie beams 8, the base of floor 6 is connected with base plate 5 and base plate collar tie beam 7, inner side edge and the steel concrete of floor 6 are bored drum outer wall and are connected, the top margin of floor 6 is connected with floor collar tie beam base 8, be positioned at the center of sole plate circular bottom plate 5 bottom steel concrete cone cylinder and be integrally connected with base plate 5, the diameter at steel concrete cone cylinder top is identical with the diameter of linkage section 1 reinforced concrete cylinder, be equipped with prestressed reinforcement 9 in the barrel of steel concrete cone cylinder and reinforced concrete cylinder and be integrally connected by fluid concrete, the top of linkage section 1 reinforced concrete cylinder is connected with blower fan tower barrel by flange, doses sandstone preloading 3 in steel concrete cone cylinder, buoyancy tank 4 is the containment housing of welded steel, and the height of buoyancy tank 4 is equal with the distance of draw-in groove between base plate collar tie beam 7 and floor top cycle beam 8 and can free in and out, and the top of buoyancy tank 4 and bottom are respectively equipped with outlet valve 10 and draining valve 11, buoyancy tank 4 is arranged connecting elements 12 with outside floor collar tie beam 8 and is connected by pin 13 and to fix for buoyancy tank or withdraw from.
In this embodiment: linkage section 1 diameter 7m, high 7m, thick 0.8m; Basic body 2 lower diameter 20m, upper diameter 7m, high 20m, wall thickness 0.8m; Sandstone preloading 3 height 7.5m; Base plate 5 diameter 30m, thick 1m; Base plate collar tie beam 7 external diameter 30m, cross section length and width are 1m, 1m; The high 6.5m of floor 6, thick 1m; 2 floor collar tie beam 8 external diameters are respectively 30m and 24m, and cross section length and width is 1m, 1m; Buoyancy tank 4 totally 6, is made up of welded steel, and cross section is polygon, and outside is circular arc line and consistent with base shape, cross section height 5.5m, upper wide 6.5m, lower wide 4.5m, thick 5cm; Connecting elements 12 is made up of steel plate, and the hole of pin 13 is reserved at middle part, is welded into entirety, steel plate thickness 5cm respectively with buoyancy tank 4 and the inner reinforcing bar of floor collar tie beam 8.
This can the towage of gravity type offshore wind crew base of towage and sinking method, and step is as follows:
1) prefabricatedly in dock complete basic body and airtight buoyancy tank 4, in buoyancy tank 4, after inflation, close outlet valve 10 and draining valve 11;
2) buoyancy tank 4 is placed in the draw-in groove of basic body, and by connecting elements 12 and pin 13, buoyancy tank 4 is fixed on basis;
3) dock water filling, basic body is floating gradually with water body rising, when dock water body is identical with outer water body water level, open caisson, sail towage ship into, basic body is connected with ship, start towage operation, when after basic towage to assigned address, basic body and ship disconnect, and carry out sinking operation;
4) open buoyancy tank 4 outlet valve 10 and draining valve 11, buoyancy tank 4 internal gas is replaced as water, simultaneously in basic body internal water flooding, along with quality increases, basic body and buoyancy tank 4 synchronously sink;
5) behind basic body location, dismounting pin 13, withdraws from buoyancy tank 4, and again by outlet valve 10 and the draining valve 11 of buoyancy tank, buoyancy tank 4 internal water is replaced into gas, buoyancy tank 4 floats and reclaims, and completes sinking work;
6) finally in the cavity of steel concrete cone cylinder and in the draw-in groove of basic body, sandstone preloading 3 is added to improve the stability of structure further.

Claims (2)

1. can the gravity type offshore wind crew base of towage, it is characterized in that: be made up of linkage section, basic body, sandstone preloading and buoyancy tank, linkage section is reinforced concrete cylinder, basic body is positioned at below horizontal plane, bore cylinder by sole plate and steel concrete to form, sole plate is concrete component, comprise base plate and floor, the outer rim of circular bottom plate is provided with base plate collar tie beam, circular bottom plate is fixed by grouting and rock foundation, floor is radial vertically uniform around steel concrete cone cylinder, the quantity of floor is 4-8 block, the top of floor is provided with 1-3 floor collar tie beam, the base of floor is connected with base plate and base plate collar tie beam, inner side edge and the steel concrete of floor are bored drum outer wall and are connected, the top margin of floor is connected with floor collar tie beam base, be positioned at the center of sole plate circular bottom plate bottom steel concrete cone cylinder and be connected with base plate, the diameter at steel concrete cone cylinder top is identical with the diameter of linkage section reinforced concrete cylinder, be equipped with prestressed reinforcement in the barrel of steel concrete cone cylinder and reinforced concrete cylinder and be connected by fluid concrete, the top of linkage section reinforced concrete cylinder is connected with blower fan tower barrel by flange, doses sandstone preloading in steel concrete cone cylinder, buoyancy tank is the containment housing of welded steel, and the height of buoyancy tank is equal with the distance of draw-in groove between base plate collar tie beam and outside floor collar tie beam and can free in and out, and the top of buoyancy tank and bottom are respectively equipped with outlet valve and draining valve, buoyancy tank is connected with outside floor circle beam setting connecting elements and by pin to be fixed for buoyancy tank or withdraws from.
2. as claimed in claim 1 can the towage of gravity type offshore wind crew base of towage and a sinking method, it is characterized in that step is as follows:
1) prefabricatedly in dock complete basic body and airtight buoyancy tank, in buoyancy tank, after inflation, close outlet valve and draining valve;
2) connect in draw-in groove buoyancy tank being placed in basic body and by pin and fix with basic body;
3) dock water filling, basic body is floating gradually with water body rising, when dock water body is identical with outer water body water level, open caisson, sail towage ship into, basic body is connected with ship, start towage operation, when after basic towage to assigned address, basic body and ship disconnect, and carry out sinking operation;
4) open buoyancy tank outlet valve and draining valve, buoyancy tank internal gas is replaced as water, simultaneously in basic body internal water flooding, along with quality increases, basic body and buoyancy tank synchronously sink;
5) behind basic body location, buoyancy tank withdrawn from by dismounting pin, again by outlet valve and the draining valve of buoyancy tank, buoyancy tank internal water is replaced into gas, and buoyancy tank floats and reclaims, and completes sinking work;
6) finally in the cavity of steel concrete cone cylinder and in the draw-in groove of basic body, sandstone preloading is added to improve the stability of structure further.
CN201410049408.8A 2014-02-13 2014-02-13 A kind of gravity type offshore wind crew base and towage thereof and sinking method Active CN103758147B (en)

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