CN204676584U - A kind of high stake truss-like offshore wind turbine foundation structure - Google Patents

A kind of high stake truss-like offshore wind turbine foundation structure Download PDF

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Publication number
CN204676584U
CN204676584U CN201520179326.5U CN201520179326U CN204676584U CN 204676584 U CN204676584 U CN 204676584U CN 201520179326 U CN201520179326 U CN 201520179326U CN 204676584 U CN204676584 U CN 204676584U
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truss
pile
foundation structure
steel pipe
wind turbine
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孙杏建
罗金平
朱彬彬
斯锋
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PowerChina Huadong Engineering Corp Ltd
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PowerChina Huadong Engineering Corp Ltd
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Abstract

The utility model relates to a kind of high stake truss-like offshore wind turbine foundation structure.The purpose of this utility model is to provide that a kind of structure is simple, safe and reliable, the high stake truss-like offshore wind turbine foundation structure of easy construction, is intended to improve the stressed of jacket node, and reduces the difficulty of grouting construction.The technical solution of the utility model is: a kind of high stake truss-like offshore wind turbine foundation structure, and it is characterized in that: this foundation structure is made up of the steel truss on top and the pile foundation of bottom, described pile foundation is one group of steel pipe pile squeezing in sea bed; Described steel truss comprises the main cylinder being vertically positioned at steel pipe pile group switching centre and the pipe casing being plugged in steel pipe pile, be that the diagonal brace of three groups of arranged crosswise is welded at its outer wall in the center of circle with main cylinder, in three groups of diagonal braces, the strut in same orientation is end to end, every root strut one end is welded with main cylinder, and the other end welds with pipe casing; Steel pipe pile is connected by being in the milk with in the gap of pipe casing lap.The utility model is applicable to Oversea wind power generation industry.

Description

A kind of high stake truss-like offshore wind turbine foundation structure
Technical field
The utility model relates to a kind of high stake truss-like offshore wind turbine foundation structure, is applicable to Oversea wind power generation industry.
Background technology
Oversea wind power generation is a kind of generation mode utilizing Wind turbines to be electric energy by wind energy transformation, is that a kind of power density is large, energy stabilization, has comparatively strong regular new forms of energy.
At present, domestic common offshore wind power foundation structural shape mostly is pile type foundation, comprises single-pile foundation, many pile leaders frame basis and High-Rise Pile Cap Foundation etc.Conventional its upper catheter chord position of many pile leaders frame foundation pattern, near sea level, is subject to larger wave current load action, and pile foundation is stressed comparatively large, and steel node easy fatigue damage that produces under the long term of the dynamic loadings such as wind, wave, stream even lost efficacy; Simultaneously grouting under water connects the own performance designing not only grouting agent and is difficult to ensure, construction technology more exists larger difficulty, destroys, will be directly connected to the whole service life of structure once grouting connects to produce.
Summary of the invention
The technical problems to be solved in the utility model is: for above-mentioned Problems existing, there is provided that a kind of structure is simple, safe and reliable, the high stake truss-like offshore wind turbine foundation structure of easy construction, be intended to improve the stressed of jacket node, and reduce the difficulty of grouting construction.
The technical scheme that the utility model adopts is: a kind of high stake truss-like offshore wind turbine foundation structure, and it is characterized in that: this foundation structure is made up of the steel truss on top and the pile foundation of bottom, described pile foundation is one group of steel pipe pile squeezing in sea bed; Described steel truss comprises the main cylinder being vertically positioned at steel pipe pile group switching centre and the pipe casing being plugged in steel pipe pile, be that the diagonal brace of three groups of arranged crosswise is welded at its outer wall in the center of circle with main cylinder, in three groups of diagonal braces, the strut in same orientation is end to end, every root strut one end is welded with main cylinder, and the other end welds with pipe casing; Steel pipe pile is connected by being in the milk with in the gap of pipe casing lap.
Often organize diagonal brace to be three struts be 120 ° uniform, first group of diagonal brace is from inside to outside to declivity, and second group of diagonal brace is upward from inside to outside, and the 3rd group of diagonal brace is from inside to outside to declivity.
The beneficial effects of the utility model are: 1, the utility model is under identical tidal level condition, steel superstructure is carried away wave action scope, decrease wave current load action, because this reducing the requirement to structural strength, decrease rolled steel dosage, simultaneously higher basic elevation of top surface, shorten the length of blower fan tower barrel, reduce Fan Equipment investment, thus cost saving, improve economic benefit of engineering; 2, the utility model grouting connection be positioned near mean sea level, can grouting construction be implemented through hole clearly of simply drawing water during construction, construct convenient, the cycle is short, save ship machine equipment.
Accompanying drawing explanation
Fig. 1 is sectional drawing of the present utility model.
Fig. 2 is plan view of the present utility model.
Detailed description of the invention
As shown in Figure 1 and Figure 2, a kind of high stake truss-like offshore wind turbine foundation structure of the present embodiment, is made up of the steel truss on top and the pile foundation of bottom, and upper and lower two parts adopt grouting to connect.
The pile foundation of bottom is made up of the steel pipe pile 7 that three are vertically squeezed in sea bed.
The steel truss on top by being vertically arranged on the main cylinder 1 of three steel pipe pile 7 overcentre, the pipe casing 5 (between pipe casing 5 and steel pipe pile 7, lap is for be in the milk linkage section 6, and this section adopts grouting to connect) being vertically plugged in steel pipe pile 7 upper end, the diagonal brace (being formed by connecting from beginning to end by the first diagonal brace 2, second diagonal brace 3, the 3rd diagonal brace 4) that is welded in three groups of arranged crosswise between main cylinder 1 and pipe casing 5 form; Wherein, in three groups of diagonal braces, the strut in same orientation is end to end, and every root strut one end is that the center of circle is welded with its outer wall with main cylinder 1, and the other end welds with pipe casing 5; Often organize diagonal brace to be three struts be 120 ° uniform, first group of diagonal brace is from inside to outside to declivity, second group of diagonal brace is upward from inside to outside, to declivity, (concrete form is that the two ends of the second diagonal brace 3 are connected with the stem of the 3rd diagonal brace 4 with the afterbody of the first diagonal brace 2 respectively to 3rd group of diagonal brace from inside to outside, it is the Z-shaped of an inclination, namely the first diagonal brace 2 is from inside to outside to declivity, and the second diagonal brace 3 is upward from inside to outside, and the 3rd diagonal brace 4 is from inside to outside to declivity).
In the present embodiment, main cylinder 1 top welded flange connects the blower fan tower barrel on top, main cylinder central diameter is determined according to top blower fan tower barrel diameter, steel truss structure root opens width (spacing namely between two steel pipe piles) according to fan loads, wave current load, topographic and geologic condition and the stake of stake footpath is long determines, main cylinder 1 lower diameter, each diagonal brace diameter, steel truss height and each thickness of steel pipe on top need according to fan loads, wave current load and depth of water situation are determined, the stake footpath of steel pipe pile 7 and wall thickness need according to fan loads, wave current load, topographic and geologic condition and bending distribution situation are determined, pipe casing 5 exposure length need be determined according to the gradient between first group of diagonal brace and the 3rd group of diagonal brace, grouting connecting length (length of the linkage section 6 that is namely in the milk) need according to grouting agent stress performance, grout compartment stressing conditions calculates to be determined.
The concrete construction method of the present embodiment is as follows:
1, be 2.4m by three pile footpaths, the long steel pipe pile 7 for 66m squeezes in sea bed.The obstruction that there is impact construction adopts professional pile driving barge or crane ship to hang up and beat and carries out pile sinking operation, need before piling to reconnoitre in detail sea-floor relief, if should carry out sweeping sea in advance; Consider the size restrictions of the steel truss on top, must strictly control pile sinking precision to meet the requirement of steel truss sinking.
2, piling construction complete after the steel truss on employing large-scale crane ship sinking top, steel truss root open into 26m, high be 27m.Truss structure leveling processing mode, grouting control are the construction Difficulties of this foundation pattern, and mainly adopt special levelling device to carry out leveling at present abroad, domestic reference marine drilling platform adopts the method for the accurate leveling of hydraulic system.
3, be connected with adopting between steel pipe pile 7 to be in the milk by the pipe casing 5 of steel truss, subject the impact of upper load and corrosive atmosphere under water after grouting agent solidification, higher to grouting agent performance, suggestion adopts more ripe ocean engineering grouting material.
Above-described embodiment is mainly used in offshore wind farm height stake truss-like foundation structure, but not as limit, for other steel truss structure involved by offshore wind power foundation, also reduces wave action effect by raising steel superstructure.Be no matter the offshore wind turbine foundation structure of which kind of pattern, as long as this foundation structure " adopt in steel truss sleeve pipe and insert in pile foundation, and steel superstructure is towering on wave action scope ", then drop within protection scope of the present invention.

Claims (2)

1. a high stake truss-like offshore wind turbine foundation structure, is characterized in that: this foundation structure is made up of the steel truss on top and the pile foundation of bottom, and described pile foundation is one group of steel pipe pile (7) squeezing in sea bed; Described steel truss comprises the main cylinder (1) being vertically positioned at steel pipe pile group switching centre and the pipe casing (5) being plugged in steel pipe pile (7), with main cylinder (1) for the diagonal brace of three groups of arranged crosswise is welded in the center of circle at its outer wall, in three groups of diagonal braces, the strut in same orientation is end to end, every root strut one end is welded with main cylinder (1), and the other end welds with pipe casing (5); Steel pipe pile (7) is connected by being in the milk with in the gap of pipe casing (5) lap.
2. high stake truss-like offshore wind turbine foundation structure according to claim 1, it is characterized in that: often organize diagonal brace to be three struts be 120 ° uniform, first group of diagonal brace is from inside to outside to declivity, and second group of diagonal brace is upward from inside to outside, and the 3rd group of diagonal brace is from inside to outside to declivity.
CN201520179326.5U 2015-03-27 2015-03-27 A kind of high stake truss-like offshore wind turbine foundation structure Active CN204676584U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105421322A (en) * 2015-12-29 2016-03-23 中国电建集团中南勘测设计研究院有限公司 Ice-breaking structure for guiding pipe frame
CN105568947A (en) * 2015-12-29 2016-05-11 中国电建集团中南勘测设计研究院有限公司 Offshore jacket ice breaking structure with vacuum cavities
CN110080274A (en) * 2019-05-16 2019-08-02 福建省宏闽电力工程监理有限公司 A kind of offshore wind farm cushion cap foundation construction method
CN112323844A (en) * 2020-10-15 2021-02-05 长江三峡集团福建能源投资有限公司 Cylindrical offshore wind generating set foundation structure and construction method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105421322A (en) * 2015-12-29 2016-03-23 中国电建集团中南勘测设计研究院有限公司 Ice-breaking structure for guiding pipe frame
CN105568947A (en) * 2015-12-29 2016-05-11 中国电建集团中南勘测设计研究院有限公司 Offshore jacket ice breaking structure with vacuum cavities
CN105568947B (en) * 2015-12-29 2017-09-22 中国电建集团中南勘测设计研究院有限公司 Jacket ice breaking structure with vacuum chamber
CN110080274A (en) * 2019-05-16 2019-08-02 福建省宏闽电力工程监理有限公司 A kind of offshore wind farm cushion cap foundation construction method
CN112323844A (en) * 2020-10-15 2021-02-05 长江三峡集团福建能源投资有限公司 Cylindrical offshore wind generating set foundation structure and construction method thereof

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