CN202689022U - Offshore wind power truss single pile base structure with negative pressure tube - Google Patents
Offshore wind power truss single pile base structure with negative pressure tube Download PDFInfo
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- CN202689022U CN202689022U CN 201220305601 CN201220305601U CN202689022U CN 202689022 U CN202689022 U CN 202689022U CN 201220305601 CN201220305601 CN 201220305601 CN 201220305601 U CN201220305601 U CN 201220305601U CN 202689022 U CN202689022 U CN 202689022U
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Abstract
The utility model relates to an offshore wind power truss single pile base structure with a negative pressure tube. The structure aims at completely utilizing performance of a soil body close to the surface of a sea bed to improve vertical and horizontal bearing performance of the fan base and improve base bearing capability. The technical scheme is that the offshore wind power truss single pile base structure with the negative pressure tube comprises a steel tubular single pile of a sink pile and constructed on the sea bed and is characterized in that a composite structure is sleeved on the single pile. The composite structure comprises a pile sleeve, a ring beam, a truss structure and a negative pressure tube structure, wherein the pile sleeve is sleeved on the single pile and is connected with the truss structure through the coaxially arranged ring beam, the truss structure is arranged in radioactive mode, and the negative tube structure is connected with the tail end of the truss structure. The offshore wind power truss single pile base structure is suitable for the offshore wind power industry and especially the sea bed environment with the surface provided with thick mucky soil.
Description
Technical field
The utility model relates to a kind of offshore wind farm truss single-pile foundation structure with negative pressure cylinder.Be applicable to the sea bed environment that Oversea wind power generation industry, particularly top layer have deep mucky soil.
Background technology
Single-pile foundation is made of single large diameter steel pipe usually, and the bottom is goed deep into providing bearing capacity in the soil; The middle part is dipped in and bears the long-term marine environment effect such as wave, ocean current, morning and evening tides, marine growth growth in the water; Top links to each other with wind-driven generator tower by linkage section.As the simplest a kind of offshore wind turbine foundation pattern of structure, single-pile foundation is the leading foundation structure pattern of European offshore wind park.
The negative pressure cylinder basis is the unlimited inversion tubular in top closure, lower end or arrives cup-like structure that be made of three parts, the bottom tubular construction is goed deep in the soil, provides bearing capacity with soil body co-operation; Top and the bottom changeover portion structure is immersed in and bears the long-term marine environment effect such as wave, ocean current, morning and evening tides, marine growth growth in the water; Top links to each other with wind-driven generator tower.The negative pressure cylinder basis is generally steel or concrete system.Because cost is low, offshore construction speed is fast, the characteristics such as recyclable recycling, and the negative pressure cylinder basis becomes the base form with better development prospect that recent two decades is applied to ocean engineering.For the offshore wind farm structure, the negative pressure cylinder basis has been in broad research and demonstrative project stage at present, and prospect is very wide.
The offshore wind farm structure is mainly born the sea situation load actions such as fan operation load and wind, wave, stream, needs emphasis to consider the vertical and horizontal bearing performance on basis in design, and the sea bed topsoil basic horizontal bearing performance of verifying has conclusive impact.The sea bed environment that particularly has deep mucky soil for the top layer reaches 40 ~ 60m such as the mucky soil layer depth of Hangzhou Wan sea bed, should not adopt separately the negative pressure cylinder basis; If the employing single-pile foundation is subjected to the impact of technique and construction technology, the stake footpath increases limited, mainly is that the increase stake is long so that vertical and horizontal bearing capacity to be provided, and material cost and construction cost will increase substantially, and the pile body horizontal movement should not be controlled.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence, a kind of offshore wind farm truss single-pile foundation structure with negative pressure cylinder is provided, be combined with novel foundation in ocean engineering tradition basis, be intended to by taking full advantage of the performance of bed top layer, the coastal waters soil body, improve the vertical and horizontal bearing performance of blower foundation, improve foundation bearing capacity, reduce displacement and the moment of flexure of pile body, it is long to reduce stake footpath and stake, reduces material cost and construction cost.
The technical scheme that the utility model adopts is: a kind of offshore wind farm truss single-pile foundation structure with negative pressure cylinder, comprise the steel pipe type single pile of piling construction on sea bed, it is characterized in that: sheathed composite construction on the described single pile, this composite construction comprises pipe casing, collar tie beam, trussed construction and negative pressure cylinder structure, wherein pipe casing is placed on the single pile, this pipe casing is by the collar tie beam truss frame for connecting structure of coaxial arrangement, trussed construction is radial arrangement, and described trussed construction end is connected to the negative pressure cylinder structure.
Described trussed construction comprises three string pipes that connect pipe casing and negative pressure cylinder structure, is interconnected by stay tube between each string pipe.
The three strings pipe end of described trussed construction all is welded in the side skirt top of negative pressure cylinder structure, and three pads are equilateral triangle and arrange.
Be connected and fixed by grouting between described pipe casing and the single pile.
Described negative pressure cylinder structure roof with wash away after the sea bed flush.
The external diameter of described negative pressure cylinder structure is greater than the external diameter of single pile, and side skirt height is external diameter
Doubly.
Described pipe casing bottom equals or is slightly larger than clear distance between negative pressure cylinder structure and the single pile to the distance on sea bed surface, and greater than the depth of water.
Angle theta is 60 ° between the described stay tube.
The beneficial effects of the utility model are: the utility model is combined the single pile structure of offshore wind turbine foundation with the negative pressure cylinder structure, have the following advantages: 1) the negative pressure cylinder structure can strengthen the soil rigidity of single-pile foundation structure coastal waters bed surface section; 2) top board of negative pressure cylinder structure and the soil body have larger contact surface, and vertical force can effectively be imported in the soil, so this structure can improve the vertical bearing capacity on basis; 3) the side skirt of negative pressure cylinder structure has increased the contact area with the soil body greatly, can give full play to earth resistance before the bed surface shallow-layer stake of coastal waters, strengthens the horizontal bearing performance of foundation structure, significantly reduces the displacement of single pile pile body and moment of flexure; 4) under the suction function when the negative pressure cylinder structure is sunk, bed top layer, the coastal waters soil body will be fastening gradually, also can improve basic supporting capacity, and simultaneously the soil body is fastening has increased basic anti-floating power; When 5) reaching with the equal vertical and horizontal bearing performance of common single pile, the stake of single pile is long, a footpath, wall thickness etc. can be reduced, and can significantly reduce material cost, particularly has in the situation of deep mucky soil on the sea bed top layer; 6) after long, the stake footpath of stake etc. reduces, can significantly reduce the construction cost of pile sinking, and the utility model also given full play to the characteristics that the negative pressure cylinder basis is easy to construct, negative pressure cylinder, truss and pipe casing composite construction can be by floating holder method transportations; 7) grouting between pipe casing and the single pile structure is connected to grouting waterborne, can effectively control construction quality, reduces difficulty of construction, reduces material and construction cost; 8) after foundation construction was finished, the negative pressure cylinder structure was positioned at below the sea bed mud face, and blower fan tower barrel links to each other with single-pile foundation structure, and is the same with traditional fan foundation structure, can not exert an influence to the follow-up constructions such as superstructure are installed.
Description of drawings
Fig. 1 is elevation of the present utility model.
Fig. 2 is top view of the present utility model.
Fig. 3 is the enlarged drawing of A section among Fig. 2.
The specific embodiment
Such as Fig. 1, Fig. 2, shown in Figure 3, the offshore wind turbine foundation of present embodiment is comprised of traditional steel pipe type single pile 1, pipe casing 4, trussed construction 3 and one group of (three) negative pressure cylinder structure 2 of being placed on the single pile 1, and all steel materials are consistent.Described three negative pressure cylinder structures 2 are positioned at below the sea bed mud face, and the negative pressure cylinder top board with wash away after the sea bed flush, the scour depth value should be done suitable adjustment by numerical simulation of optimum result of calculation, three negative pressure cylinder structures 2 are evenly arranged in centered by single pile 1 around the single pile 1, and three negative pressure cylinder structures 2 are connected and fixed with pipe casing 4 by trussed construction 3 and collar tie beam 5.Pipe casing 4 and single pile 1 are fixed by grouting agent.
Trussed construction 3 is comprised of interconnective stay tube 3-2 between three string pipe 3-1 that connect pipe casings 4 and negative pressure cylinder structure 2 and each string pipe 3-1 in this example.For avoiding the local distortion of negative pressure cylinder structure 2, guarantee the reasonability that it is stressed, three end points of trussed construction 3 all are welded in the side skirt top of negative pressure cylinder structure 2, are equilateral triangle and arrange.
The outer diameter D 1 of single pile 1 can be determined according to the external diameter of top blower fan tower barrel in this example, equals or is slightly larger than the blower fan tower barrel external diameter.The outer diameter D 2 of negative pressure cylinder structure 2 and side skirt height H 2 are take the outer diameter D 1 of single pile 1 as reference, and the span suggestion is D2〉D1,
About.The string pipe 3-1 suggestion of trussed construction 3 is of a size of the mm of φ 600 * 20(unit), stay tube 3-2 suggestion is of a size of the mm of φ 300 * 15(unit), the angle theta suggestion is 60 ° between the stay tube.The length H3 of pipe casing 4 requires to determine that the bottom of pipe casing 4 is slightly larger than the depth of water to the sea bed identity distance from H1 according to the structure of domestic and foreign current standard, requires to determine according to grouting construction waterborne.Clear distance L1 between negative pressure cylinder structure 2 and the single pile 1 can be equal to or slightly less than pipe casing 4 bottoms to the distance H 1 of mud face.
Concrete value for above-mentioned four-index (D2, H2, θ, L1) and string pipe 3-1 and stay tube 3-2 size should appropriately adjust by numerical simulation of optimum result of calculation, in the hope of reaching most desired effect.
The concrete construction method of present embodiment is as follows: selection, type selecting, processing and the erection work of single pile 1, negative pressure cylinder structure 2, trussed construction 3, pipe casing 4 are finished before construction in advance, comprise negative pressure cylinder structure 2, trussed construction 3 are welded into composite construction with pipe casing 4.Composite construction can be transported to the job site by floating holder method.The piling construction of single pile 1 is identical with ordinary steel tubular type single pile, need not to increase other auxiliary equipment or measure.After single pile 1 pile sinking was complete, mobile composite construction was so that pipe casing 4 is basically identical with single pile 1 center.Afterwards composite construction sinking construction and negative pressure cylinder basis are basic identical, guarantee that pipe casing 4 is inserted in the single pile 1, will note the synchronism of three negative pressure cylinder structures 2 in the sinking process, slowly carry out.After composite construction sank down into assigned address, being in the milk between pipe casing 4 and the single pile 1 was connected, and its grouting process is identical with the grouting process of single-pile foundation, is grouting waterborne.After whole foundation structure construction was finished, the construction of superstructure was consistent with traditional blower foundation.
Above-described embodiment is mainly used in the offshore wind generating basis, be particularly suitable for the top layer and have the sea bed environment of deep mucky soil, but not as limit, also can use technical solution of the present invention to improve to improve the load-carrying properties on basis for other related pile foundation structure of offshore engineering structure.No matter be the ocean engineering pile foundation structure of which kind of pattern; as long as this pile foundation structure " at the following near surface elevation of sea bed mud face place; link to each other with one group of negative pressure cylinder structure by braced structures on the pile body of foundation pile; the negative pressure cylinder structure is radial arrangement centered by foundation pile " then all drops within the protection domain of the present utility model.
Claims (8)
1. offshore wind farm truss single-pile foundation structure with negative pressure cylinder, comprise the steel pipe type single pile (1) of piling construction on sea bed, it is characterized in that: the upper sheathed composite construction of described single pile (1), this composite construction comprises pipe casing (4), collar tie beam (5), trussed construction (3) and negative pressure cylinder structure (2), wherein pipe casing (4) is placed on the single pile (1), this pipe casing is by collar tie beam (5) the truss frame for connecting structure (3) of coaxial arrangement, trussed construction (3) is radial arrangement, and described trussed construction (3) end is connected to negative pressure cylinder structure (2).
2. the offshore wind farm truss single-pile foundation structure with negative pressure cylinder according to claim 1, it is characterized in that: described trussed construction (3) comprises three string pipes (3-1) that connect pipe casing (4) and negative pressure cylinder structure (2), is interconnected by stay tube (3-2) between each string pipe (3-1).
3. the offshore wind farm truss single-pile foundation structure with negative pressure cylinder according to claim 2, it is characterized in that: three strings pipe (3-1) end of described trussed construction (3) all is welded in the side skirt top of negative pressure cylinder structure (2), and three pads are equilateral triangle and arrange.
4. the offshore wind farm truss single-pile foundation structure with negative pressure cylinder according to claim 1 is characterized in that: be connected and fixed by grouting between described pipe casing (4) and the single pile (1).
5. the offshore wind farm truss single-pile foundation structure with negative pressure cylinder according to claim 1 is characterized in that: described negative pressure cylinder structure (2) top board with wash away after the sea bed flush.
6. the offshore wind farm truss single-pile foundation structure with negative pressure cylinder according to claim 1 is characterized in that: the external diameter of described negative pressure cylinder structure (2) is greater than the external diameter of single pile (1), and side skirt height is external diameter
Doubly.
7. the offshore wind farm truss single-pile foundation structure with negative pressure cylinder according to claim 1, it is characterized in that: described pipe casing (4) bottom equals or is slightly larger than clear distance between negative pressure cylinder structure (2) and the single pile (1) to the distance on sea bed surface, and greater than the depth of water.
8. the offshore wind farm truss single-pile foundation structure with negative pressure cylinder according to claim 2 is characterized in that: angle between the described stay tube (3-2)
It is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220305601 CN202689022U (en) | 2012-06-25 | 2012-06-25 | Offshore wind power truss single pile base structure with negative pressure tube |
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|---|---|---|---|
| CN 201220305601 CN202689022U (en) | 2012-06-25 | 2012-06-25 | Offshore wind power truss single pile base structure with negative pressure tube |
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| CN 201220305601 Expired - Lifetime CN202689022U (en) | 2012-06-25 | 2012-06-25 | Offshore wind power truss single pile base structure with negative pressure tube |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046575A (en) * | 2013-01-28 | 2013-04-17 | 中国水电顾问集团西北勘测设计研究院 | Land four-leaf-clover-type fan expanded foundation structure |
| CN103225314A (en) * | 2013-05-11 | 2013-07-31 | 天津大学 | Offshore wind power foundation consisting of single pile and cylindrical foundations |
| CN106013210A (en) * | 2016-06-16 | 2016-10-12 | 江苏海上龙源风力发电有限公司 | Jacket type offshore wind turbine foundation with multiple negative pressure barrels |
| CN106193041A (en) * | 2016-08-31 | 2016-12-07 | 合肥学院 | A kind of marine static load pile-sinking device and construction method thereof |
| CN108677996A (en) * | 2018-07-23 | 2018-10-19 | 上海交通大学 | Offshore wind turbine single-pile foundation with truss lateral support structure |
| CN109680702A (en) * | 2019-02-03 | 2019-04-26 | 天津港航工程有限公司 | Suction cartridge type single-pile foundation structure and its construction method |
| CN110093943A (en) * | 2019-02-27 | 2019-08-06 | 重庆大学 | A kind of novel suction cartridge type composite structure wind-power tower basis suitable for deep-sea |
| CN110206056A (en) * | 2019-05-14 | 2019-09-06 | 中交第一航务工程局有限公司 | A kind of Center stake for offshore wind farm adds negative pressure cylinder composite foundation and operating method |
| CN110374131A (en) * | 2019-07-19 | 2019-10-25 | 浙江大学 | A kind of cylinder composite truss formula offshore wind turbine foundation and its construction technology |
-
2012
- 2012-06-25 CN CN 201220305601 patent/CN202689022U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046575A (en) * | 2013-01-28 | 2013-04-17 | 中国水电顾问集团西北勘测设计研究院 | Land four-leaf-clover-type fan expanded foundation structure |
| CN103046575B (en) * | 2013-01-28 | 2015-07-29 | 中国电建集团西北勘测设计研究院有限公司 | A kind of blower fan spread footing structure of land four leaf plum types |
| CN103225314A (en) * | 2013-05-11 | 2013-07-31 | 天津大学 | Offshore wind power foundation consisting of single pile and cylindrical foundations |
| CN106013210A (en) * | 2016-06-16 | 2016-10-12 | 江苏海上龙源风力发电有限公司 | Jacket type offshore wind turbine foundation with multiple negative pressure barrels |
| CN106193041A (en) * | 2016-08-31 | 2016-12-07 | 合肥学院 | A kind of marine static load pile-sinking device and construction method thereof |
| CN108677996A (en) * | 2018-07-23 | 2018-10-19 | 上海交通大学 | Offshore wind turbine single-pile foundation with truss lateral support structure |
| CN109680702A (en) * | 2019-02-03 | 2019-04-26 | 天津港航工程有限公司 | Suction cartridge type single-pile foundation structure and its construction method |
| CN110093943A (en) * | 2019-02-27 | 2019-08-06 | 重庆大学 | A kind of novel suction cartridge type composite structure wind-power tower basis suitable for deep-sea |
| CN110206056A (en) * | 2019-05-14 | 2019-09-06 | 中交第一航务工程局有限公司 | A kind of Center stake for offshore wind farm adds negative pressure cylinder composite foundation and operating method |
| CN110374131A (en) * | 2019-07-19 | 2019-10-25 | 浙江大学 | A kind of cylinder composite truss formula offshore wind turbine foundation and its construction technology |
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Granted publication date: 20130123 |
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