CN103758147A - Gravity type offshore wind turbine generator set foundation and towing and sinking method thereof - Google Patents

Gravity type offshore wind turbine generator set foundation and towing and sinking method thereof Download PDF

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Publication number
CN103758147A
CN103758147A CN201410049408.8A CN201410049408A CN103758147A CN 103758147 A CN103758147 A CN 103758147A CN 201410049408 A CN201410049408 A CN 201410049408A CN 103758147 A CN103758147 A CN 103758147A
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buoyancy tank
main body
floor
foundation
towage
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CN201410049408.8A
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CN103758147B (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 gravity type offshore wind turbine generator set foundation capable of being towed is composed of a connecting section, a foundation body, a gravel pile and a floating box. The foundation body is composed of a foundation base and a reinforced concrete conic cylinder, the foundation base comprises a bottom board and a rib board, the outer edge of the bottom board is provided with a bottom board ring beam, the circular bottom board is fixed to a rock foundation through grouting, and the top of the rib board is provided with a rib board ring beam; the top of a reinforced concrete circular cylinder at the connecting section is connected with a fan tower through a flange; the floating box is a closed box body welded through steel and the top of the floating box and the bottom of the floating box are provided with an air discharging valve and a water discharging valve respectively; the floating box and the outer side rib board ring beam are provided with connecting components and connected through hinge pins so that the floating box can be fixed or retracted. The gravity type offshore wind turbine generator set foundation has the advantages that the gravity center of the gravity type offshore wind turbine generator set foundation is low, the good stability and the safety are achieved in the towing transportation process and the sinking process, the material use amount of the foundation is small, prefabrication installation is convenient and rapid, the construction period is short, the construction cost is low, the economical efficiency is good, and popularization and application are facilitated.

Description

A kind of gravity offshore wind farm unit basis and towage and sinking method
Technical field
The present invention relates to constructing of offshore wind power foundation, particularly a kind of gravity offshore wind farm unit basis and towage 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, the bodily form is simple, design easily, but himself weight is large, work progress substantially can only adopt and lift, construction cost is high, difficulty of construction is large, danger is high, less economical.And the construction method that adopts towage technology to replace hoisting technology can improve efficiency of construction greatly, and significantly reduce costs.Therefore gravity type foundation form that, in recent years can towage has had great development.But although the gravity type foundation form of carrying out towage existing can realize the ability of towage, still there is many hidden danger in the floating stability in towage and sinking process thereof.
This basis pattern can complete towage work by external buoyancy tank.Meanwhile, because the bodily form is good, this foundation structure all has higher floating stability in towage transportation and sinking process.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 a kind of gravity offshore wind farm unit basis and towage and sinking method are provided, and 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:
Gravity offshore wind farm unit basis that can towage, consists of linkage section, basic main body, sandstone preloading and buoyancy tank, and linkage section is reinforced concrete cylinder, foundation main body is positioned at below horizontal plane, by sole plate and steel concrete cone cylinder, formed, 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 vertebra cylinder, the quantity of floor is 4-8 piece, the top of floor is provided with 1-3 floor collar tie beam, the base of floor is connected with base plate, the inner side edge of floor is connected with steel concrete cone drum outer wall, the outer side edges of floor is connected with the medial surface of base plate collar tie beam and ragged edge floor collar tie beam, steel concrete cone cylinder bottom is positioned at the center of sole plate circular bottom plate and is integrally connected with base plate, the diameter at steel concrete cone cylinder top is identical with the diameter of linkage section reinforced concrete cylinder, in the barrel of steel concrete cone cylinder and reinforced concrete cylinder, be equipped with prestressed reinforcement and be integrally connected by fluid concrete, the top of linkage section reinforced concrete cylinder is connected with blower fan tower barrel by flange, in steel concrete cone cylinder, doses sandstone preloading, buoyancy tank is the airtight casing of steel welding, and between the height of buoyancy tank and base plate collar tie beam and floor top cycle beam, the distance of draw-in groove equates also can free in and out, and the top of buoyancy tank and bottom are not provided with outlet valve and draining valve, buoyancy tank is connected for buoyancy tank and fixes or withdraw from outside floor circle beam setting connecting elements and by pin.
Towage and the sinking method on described gravity offshore wind farm unit basis that can towage, step is as follows:
1) prefabricated basic main body and the airtight air buoyancy tank of completing in dock, closes outlet valve and draining valve after inflation in buoyancy tank;
2) air buoyancy tank is placed in the draw-in groove of basic main body and by pin and connects with basic main body and fix;
3) dock water filling, basis main 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 main body is connected with ship, start towage operation, when basic towage is after assigned address, basic main body and ship disconnect, the operation of sinking;
4) open buoyancy tank outlet valve and draining valve, buoyancy tank internal gas is replaced as to water, simultaneously in basic main body internal water flooding, along with mass penalty, basic main body synchronizes with buoyancy tank;
5) behind basic main body location, dismounting pin is withdrawn from buoyancy tank, again, by outlet valve and the draining valve of buoyancy tank, buoyancy tank internal water is replaced into gas, and buoyancy tank floating reclaims, and completes sinking work;
6) finally in the cavity of steel concrete cone cylinder and in the draw-in groove of basic main body, add sandstone preloading further to improve the stability of structure.
The invention has the beneficial effects as follows:
This gravity offshore wind farm unit basis center of gravity is low, in towage transportation and sinking process, has good stability and safety; For air buoyancy tank and the connecting elements convenient disassembly thereof of towage and sinking, recyclable recycling; This basic material consumption is few, prefabricated quick and easy for installation, and short construction period, construction cost are low, have good economy, are conducive to apply.
Accompanying drawing explanation
Fig. 1 is this gravity offshore wind farm unit basic stereoscopic structural representation.
Fig. 2 is this gravity offshore wind farm unit basis sectional structure schematic diagram.
Fig. 3 is this gravity offshore wind farm unit basis plan structure schematic diagram.
In figure: 1. basic main body 3. sandstone preloading 4. buoyancy tank 5. base plates of linkage section 2.
6. floor 7. base plate collar tie beam 8. floor collar tie beam 9. prestressed reinforcement 10. outlet valves
11. draining valve 12. connecting elements 13. pins.
The specific embodiment
Embodiment:
Gravity offshore wind farm unit basis that can towage, as Figure 1-3, consists of linkage section 1, basic main body 2, sandstone preloading 3 and buoyancy tank 4, and linkage section 1 is reinforced concrete cylinder, basis main body 2 is positioned at below horizontal plane, by sole plate and steel concrete cone cylinder, formed, 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 vertebra cylinder, the quantity of floor 6 is 6, 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, the inner side edge of rib 6 is connected with steel concrete cone drum outer wall, the outer side edges of floor 6 is connected with the medial surface of base plate collar tie beam 7 and ragged edge floor collar tie beam 8, steel concrete cone cylinder bottom is positioned at the center of sole plate circular bottom plate 5 and is 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, in the barrel of steel concrete cone cylinder and reinforced concrete cylinder, be equipped with prestressed reinforcement 9 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, in steel concrete cone cylinder, doses sandstone preloading 3, buoyancy tank 4 is the airtight casing of steel welding, and between the height of buoyancy tank 4 and base plate collar tie beam 7 and floor top cycle beam 8, the distance of draw-in groove equates also can free in and out, and the top of buoyancy tank 4 and bottom are not provided with outlet valve 10 and draining valve 11, buoyancy tank 4 arranges connecting elements 12 with outside floor collar tie beam 8 and is connected for buoyancy tank and is fixed or withdraw from by pin 13.
In this embodiment: linkage section 1 diameter 7m, high 7m, thick 0.8m; Basis main 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 6m of floor 6, thick 1m; 2 floor collar tie beam 5 external diameters are respectively 30m and 24m, and cross section length and width is 1m, 1m; Totally 6 of buoyancy tanks 8, are made by steel welding, and cross section is polygon, and outside is circular arc line consistent with base shape, the high 5.5m in cross section, upper wide 6.5m, lower wide 4.5m, thick 5cm; Connecting elements 12 is made by steel plate, and the hole of the reserved pin 13 in middle part, is welded into entirety, steel plate thickness 5cm with buoyancy tank 4 and the inner reinforcing bar of floor collar tie beam 8 respectively.
This can towage towage and the sinking method on gravity offshore wind farm unit basis, step is as follows:
1) prefabricated basic main body and the airtight air buoyancy tank 4 of completing in dock, closes outlet valve 10 and draining valve 11 after the interior inflation of buoyancy tank 4;
2) buoyancy tank 4 is placed in the draw-in groove of basic main body, and by connecting elements 12 and pin 13, buoyancy tank 4 is fixed on basis;
3) dock water filling, basis main 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 main body is connected with ship, start towage operation, when basic towage is after assigned address, basic main body and ship disconnect, the operation of sinking;
4) open buoyancy tank 4 outlet valves 10 and draining valves 11, buoyancy tank 4 internal gas are replaced as to water, simultaneously in basic main body internal water flooding, along with mass penalty, basic main body is synchronizeed sinking with buoyancy tank 4;
5) behind basic main body location, dismounting pin 13, withdraws from buoyancy tank 4, again, by the outlet valve 10 and draining valve 11 of buoyancy tank, buoyancy tank 4 internal water is replaced into gas, and buoyancy tank 4 floatings reclaim, and complete sinking work;
6) finally in the cavity of steel concrete cone cylinder and in the draw-in groove of basic main body, add sandstone preloading 3 further to improve the stability of structure.

Claims (2)

1. a gravity offshore wind farm unit basis that can towage, is characterized in that: linkage section, basic main body, sandstone preloading and buoyancy tank, consist of, linkage section is reinforced concrete cylinder, foundation main body is positioned at below horizontal plane, by sole plate and steel concrete cone cylinder, formed, 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 vertebra cylinder, the quantity of floor is 4-8 piece, the top of floor is provided with 1-3 floor collar tie beam, the base of floor is connected with base plate, the inner side edge of floor is connected with steel concrete cone drum outer wall, the outer side edges of floor is connected with the medial surface of base plate collar tie beam and ragged edge floor collar tie beam, steel concrete cone cylinder bottom is positioned at the center of sole plate circular bottom plate and is integrally connected with base plate, the diameter at steel concrete cone cylinder top is identical with the diameter of linkage section reinforced concrete cylinder, in the barrel of steel concrete cone cylinder and reinforced concrete cylinder, be equipped with prestressed reinforcement and be integrally connected by fluid concrete, the top of linkage section reinforced concrete cylinder is connected with blower fan tower barrel by flange, in steel concrete cone cylinder, doses sandstone preloading, buoyancy tank is the airtight casing of steel welding, and between the height of buoyancy tank and base plate collar tie beam and floor top cycle beam, the distance of draw-in groove equates also can free in and out, and the top of buoyancy tank and bottom are not provided with outlet valve and draining valve, buoyancy tank is connected for buoyancy tank and fixes or withdraw from outside floor circle beam setting connecting elements and by pin.
2. towage and the sinking method on gravity offshore wind farm unit basis that as claimed in claim 1 can towage, is characterized in that step is as follows:
1) prefabricated basic main body and the airtight air buoyancy tank of completing in dock, closes outlet valve and draining valve after inflation in buoyancy tank;
2) air buoyancy tank is placed in the draw-in groove of basic main body and by pin and connects with basic main body and fix;
3) dock water filling, basis main 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 main body is connected with ship, start towage operation, when basic towage is after assigned address, basic main body and ship disconnect, the operation of sinking;
4) open buoyancy tank outlet valve and draining valve, buoyancy tank internal gas is replaced as to water, simultaneously in basic main body internal water flooding, along with mass penalty, basic main body synchronizes with buoyancy tank;
5) behind basic main body location, dismounting pin is withdrawn from buoyancy tank, again, by outlet valve and the draining valve of buoyancy tank, buoyancy tank internal water is replaced into gas, and buoyancy tank floating reclaims, and completes sinking work;
6) finally in the cavity of steel concrete cone cylinder and in the draw-in groove of basic main body, add sandstone preloading further to improve the stability of structure.
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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Cited By (21)

* Cited by examiner, † Cited by third party
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CN104264704A (en) * 2014-10-13 2015-01-07 天津大学前沿技术研究院有限公司 Combination type hexagon buoyancy tank foundation for seaborne anemometer tower
CN104278692A (en) * 2014-10-13 2015-01-14 天津大学前沿技术研究院有限公司 Integral trilateral floating box foundation with lateral supports for offshore wind tower
CN104404977A (en) * 2014-10-13 2015-03-11 天津大学前沿技术研究院有限公司 Integrated trilateral buoyancy tank foundation for marine anemometer tower
CN104404976A (en) * 2014-10-13 2015-03-11 天津大学前沿技术研究院有限公司 Integrated hexagonal buoyancy tank foundation structure for marine anemometer tower
CN104790368A (en) * 2015-04-21 2015-07-22 天津大学前沿技术研究院有限公司 Offshore building structure capable of achieving self-floating and towing and construction method of offshore building structure
CN105756081A (en) * 2016-05-05 2016-07-13 江苏金海新能源科技有限公司 Self-tapered end prestress wire circular truncated cone concrete drum offshore wind turbine foundation and construction method thereof
CN105926659A (en) * 2016-04-25 2016-09-07 江苏金海新能源科技有限公司 Pretressed concrete automatic-control pontoon type offshore wind turbine foundation and construction method thereof
CN105971001A (en) * 2016-06-30 2016-09-28 三重型能源装备有限公司 Bottom supporting device of offshore platform and offshore wind power generation device
CN106193095A (en) * 2016-08-31 2016-12-07 沧州晟实伟业机械设备制造有限公司 A kind of novel offshore wind turbine foundation module
CN106741690A (en) * 2016-12-07 2017-05-31 天津格林森科技股份有限公司 A kind of pre-manufactured steel and reinforced concrete multilayer marine floating type platform base
CN106976808A (en) * 2016-01-18 2017-07-25 财团法人船舶暨海洋产业研发中心 Equipment is installed in the transportation installation method of pedestal and transport to ultra-large type offshore blower fan under water
CN106976526A (en) * 2016-01-18 2017-07-25 财团法人船舶暨海洋产业研发中心 Carrier is installed in the transportation installation method of pedestal and transport to ultra-large type offshore blower fan under water
CN108265740A (en) * 2017-12-29 2018-07-10 河南理工大学 A kind of device and construction method for reducing land Wind turbines foundation structure damage
US10337501B2 (en) * 2014-11-26 2019-07-02 Saitec Offshore Technologies S.L.U. Floating platform for harnessing wind energy
CN110158638A (en) * 2019-06-12 2019-08-23 长江勘测规划设计研究有限责任公司 Offshore wind farm composite tube foundation construction structure and construction method
CN110158637A (en) * 2019-06-12 2019-08-23 长江勘测规划设计研究有限责任公司 Offshore wind farm bucket foundation constructing structure and construction method
CN110155264A (en) * 2019-06-12 2019-08-23 长江勘测规划设计研究有限责任公司 Offshore wind turbine composite tube basis towage structure and method for towing
CN110172990A (en) * 2019-05-07 2019-08-27 天津大学 A kind of installation of offshore wind farm bucket foundation and recycling construction method
CN110588910A (en) * 2019-10-18 2019-12-20 清华大学 Flexible water floating body
CN114319417A (en) * 2022-02-22 2022-04-12 重庆大学 Barrel-shaped assembled wind power tower barrel foundation and construction method thereof
CN115324052A (en) * 2022-10-17 2022-11-11 中交第一航务工程局有限公司 Large-diameter concrete cylinder sinking method

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CN103195080A (en) * 2013-03-28 2013-07-10 天津大学 Towing method for gravity foundation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278692A (en) * 2014-10-13 2015-01-14 天津大学前沿技术研究院有限公司 Integral trilateral floating box foundation with lateral supports for offshore wind tower
CN104404977A (en) * 2014-10-13 2015-03-11 天津大学前沿技术研究院有限公司 Integrated trilateral buoyancy tank foundation for marine anemometer tower
CN104404976A (en) * 2014-10-13 2015-03-11 天津大学前沿技术研究院有限公司 Integrated hexagonal buoyancy tank foundation structure for marine anemometer tower
CN104278692B (en) * 2014-10-13 2016-02-24 天津大学前沿技术研究院有限公司 A kind of overall triangle buoyancy tank basis of the band lateral support for offshore anemometer tower
CN104264704A (en) * 2014-10-13 2015-01-07 天津大学前沿技术研究院有限公司 Combination type hexagon buoyancy tank foundation for seaborne anemometer tower
US10337501B2 (en) * 2014-11-26 2019-07-02 Saitec Offshore Technologies S.L.U. Floating platform for harnessing wind energy
CN104790368A (en) * 2015-04-21 2015-07-22 天津大学前沿技术研究院有限公司 Offshore building structure capable of achieving self-floating and towing and construction method of offshore building structure
CN106976808A (en) * 2016-01-18 2017-07-25 财团法人船舶暨海洋产业研发中心 Equipment is installed in the transportation installation method of pedestal and transport to ultra-large type offshore blower fan under water
CN106976526B (en) * 2016-01-18 2018-11-27 财团法人船舶暨海洋产业研发中心 The transportation installation method and transport installation carrier of the underwater pedestal of ultra-large type offshore blower
CN106976526A (en) * 2016-01-18 2017-07-25 财团法人船舶暨海洋产业研发中心 Carrier is installed in the transportation installation method of pedestal and transport to ultra-large type offshore blower fan under water
CN105926659A (en) * 2016-04-25 2016-09-07 江苏金海新能源科技有限公司 Pretressed concrete automatic-control pontoon type offshore wind turbine foundation and construction method thereof
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CN106193095A (en) * 2016-08-31 2016-12-07 沧州晟实伟业机械设备制造有限公司 A kind of novel offshore wind turbine foundation module
CN106741690A (en) * 2016-12-07 2017-05-31 天津格林森科技股份有限公司 A kind of pre-manufactured steel and reinforced concrete multilayer marine floating type platform base
CN108265740A (en) * 2017-12-29 2018-07-10 河南理工大学 A kind of device and construction method for reducing land Wind turbines foundation structure damage
CN108265740B (en) * 2017-12-29 2019-10-25 河南理工大学 A kind of device and construction method reducing land Wind turbines foundation structure damage
CN110172990A (en) * 2019-05-07 2019-08-27 天津大学 A kind of installation of offshore wind farm bucket foundation and recycling construction method
CN110155264A (en) * 2019-06-12 2019-08-23 长江勘测规划设计研究有限责任公司 Offshore wind turbine composite tube basis towage structure and method for towing
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CN110155264B (en) * 2019-06-12 2023-10-27 长江勘测规划设计研究有限责任公司 Marine fan composite cylinder foundation towing structure and towing method
CN110588910A (en) * 2019-10-18 2019-12-20 清华大学 Flexible water floating body
CN110588910B (en) * 2019-10-18 2024-04-05 清华大学 Flexible water floating body
CN114319417A (en) * 2022-02-22 2022-04-12 重庆大学 Barrel-shaped assembled wind power tower barrel foundation and construction method thereof
CN114319417B (en) * 2022-02-22 2022-10-25 重庆大学 Barrel-shaped assembled wind power tower barrel foundation and construction method thereof
CN115324052A (en) * 2022-10-17 2022-11-11 中交第一航务工程局有限公司 Large-diameter concrete cylinder sinking method

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