CN105780802A - Jacket offshore wind turbine foundation with brackets and construction method thereof - Google Patents

Jacket offshore wind turbine foundation with brackets and construction method thereof Download PDF

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Publication number
CN105780802A
CN105780802A CN201410807021.4A CN201410807021A CN105780802A CN 105780802 A CN105780802 A CN 105780802A CN 201410807021 A CN201410807021 A CN 201410807021A CN 105780802 A CN105780802 A CN 105780802A
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CN
China
Prior art keywords
conduit
foundation
bracket
pile
catheterostat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410807021.4A
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Chinese (zh)
Inventor
熊翱
尤毅
潘晓亮
张锐
温文峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGZHOU HUASHEN ENGINEERING MANAGEMENT Co Ltd
Original Assignee
GUANGZHOU HUASHEN ENGINEERING MANAGEMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGZHOU HUASHEN ENGINEERING MANAGEMENT Co Ltd filed Critical GUANGZHOU HUASHEN ENGINEERING MANAGEMENT Co Ltd
Priority to CN201410807021.4A priority Critical patent/CN105780802A/en
Publication of CN105780802A publication Critical patent/CN105780802A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a jacket offshore wind turbine foundation with brackets. The jacket offshore wind turbine foundation with the brackets comprises a jacket, foundation piles, bracket flanges and the construction brackets, wherein the foundation piles are arranged in guide pipes of the jacket and extend to be embedded into a foundation; the bracket flanges are arranged on the guide pipes; and the construction brackets are connected with the guide pipes through the bracket flanges. According to the jacket offshore wind turbine foundation with the brackets, a temporary supporting system is formed through auxiliary piles constructed in advance, the jacket is placed on the supporting system in a suspended mode through the construction brackets, then the guide pipes of the jacket serve as a positioning guiding device so that the foundation piles can be piled, and finally grouting connection is conducted on the foundation piles and the guide pipes. By the adoption of the jacket offshore wind turbine foundation with the brackets, structure fixing and stabilizing of the suspended jacket during the construction period are achieved; positioning, guiding, pile clamping and the like of offshore construction of the foundation piles are achieved; and in addition, the height of the jacket can be reduced, and steel materials are saved. The structure is easy and convenient to construct, good in feasibility and suitable for areas with large water depths and thick covering layers and has broad application prospects in offshore wind power projects. The invention further discloses a construction method of the jacket offshore wind turbine foundation with the brackets.

Description

A kind of catheterostat offshore wind turbine foundation with bracket and construction method thereof
Technical field
The invention belongs to the technical field of offshore wind farm engineering, be specifically related to a kind of catheterostat offshore wind turbine foundation with bracket and construction method thereof.
Background technology
Marine engineering is because at sea constructing, and operating mode is relatively severe, big by effect of natural conditions, can the activity duration short, difficulty of construction is bigger.
Catheterostat is one of ocean engineering base_structure types the most frequently used at present, owing to it has the advantages such as integral rigidity is big, little by wave force, malformation is little, it is adaptable to the marine site of the various depth of waters, therefore relatively broad in the application of the field such as offshore oil and offshore wind farm.Conventional jacket construction method is for be placed in sea bed mud face by structure, and the overhanging steel cylinder in its lower end is connected by underwater grouting with the pile foundation buried, and grouting quality is not easily checked;When catheterostat is held on sea bed mud face, settlement prevention need to be set, be difficult to ensure stable;And need to position under water during pile foundation pile sinking, it is more difficult to implement;Additionally, when deepwater regions adopts catheterostat, owing to whole height is higher, not only cost is high, and the requirement of construction equipment is also at a relatively high.
Above-mentioned discussion content purpose is in that to introduce, to reader, the various aspects being likely to the technology relevant to the various aspects of the invention being described below and/or advocate, believe that this discussion content contributes to as reader with background's information, to be conducive to being more fully understood that present disclosure.
Summary of the invention
It is an object of the invention to avoid deficiency of the prior art to provide a kind of catheterostat offshore wind turbine foundation with bracket and construction method thereof, compared with common conduit shelf structure, setting up construction bracket thus thoroughly changing construction method, its construction is more simple and easy, and the requirement of construction equipment is lower.Which solve construction time unsettled jacket structure fix, stable problem;Next to that solve the problems such as foundation pile positioning for offshore operation, guiding, clip pile, grouting quality can dry method, and the height of catheterostat can be reduced, save steel, this structure construction is easy, the duration economizes, exploitativeness is good, it is adaptable to the area that the depth of water is relatively big, cover layer is thicker.
The purpose of the present invention is achieved through the following technical solutions: provide a kind of catheterostat offshore wind turbine foundation with bracket, including catheterostat 11, it is arranged in the conduit 12 of catheterostat 11 and extends the foundation pile 15 embedding ground, it is arranged at the bracket flange 13 on conduit 12, by the construction bracket 14 that bracket flange 13 is connected with conduit 12.
Wherein, described bracket flange 13 is arranged at the top of conduit 12, or is arranged at the epimere side of conduit 12, is fixed on conduit 12.
Wherein, described construction bracket 14 is the steel cantilever that level is overhanging, or VERTICAL TUBE adds horizontal steel cantilever, is connected by bracket flange 13 with conduit 12, can install and dismantle.
Wherein, described foundation pile 15 is steel-pipe pile, and no less than 3, its external diameter is more slightly smaller than the internal diameter of conduit 12, its top can lower than/flush/stretch out the top of conduit 12.
Wherein, the pile body of described foundation pile 15 and conduit 12 partly overlap, and the annulus at overlapping interval fixes connection by being in the milk, and also can increase pouring reinforcement concrete 21 in foundation pile 15 with conduit 12.
The construction method of a kind of catheterostat offshore wind turbine foundation with bracket, it is characterised in that comprise the steps:
S1, making catheterostat 11, bracket flange 13, construction bracket 14, foundation pile 15, auxiliary pile 16, gooseneck 17 etc., be fixedly installed on the conduit 12 of catheterostat 11 by bracket flange 13, be installed on conduit 12 by bracket flange 13 by construction bracket 14;
After S2, measurement and positioning, marine guidance piling equipment is utilized to carry out the piling construction of auxiliary pile 16 in precalculated position, with two piles of a determining deviation for one group, implement one group of auxiliary pile 16 in the position corresponding to the every conduit 12 of catheterostat 11, the bearing capacity of auxiliary pile 16 should meet the requirement of predetermined temporary support catheterostat 11;
S3, between two piles often organizing auxiliary pile 16 weld gooseneck 17, the bottom surface absolute altitude of each gooseneck 17 should exceed working water level, and its elevation of top surface is determined by design, and keeps level;
Catheterostat 11 is held between auxiliary pile 16 on gooseneck 17 by bracket 14 of constructing by S4, the marine crane gear of utilization so that it is reaches predetermined absolute altitude and perpendicularity, and takes fixation to remain stable for;
S5, utilize catheterostat 11 as platform, conduit 12 as locating guide device, adopt pile driving equipment to carry out the piling construction of foundation pile 15 inside conduit 12, make foundation pile 15 bottom reach projected depth, its top can lower than/flush/stretch out the top of conduit 12;
S6, the annular space perfusion mortar 18 formed with conduit 12 at foundation pile 15, make foundation pile 15 fix with conduit 12 and be connected;Dry method of can drawing water is in the milk 18 mass, also can in foundation pile 15 with conduit 12 increase pouring reinforcement concrete 21;
S7, turning on flange bolt Demolition Construction bracket 14, the gooseneck 17 between cutting auxiliary pile 16, auxiliary pile 16 is removed in pile pulling;
S8, by the foundation ring base 19 on catheterostat 11 top arrange foundation ring 20 blower fan tower barrel is installed.
Beneficial effects of the present invention: utilize the auxiliary pile in groups first constructed as a support system, by the construction bracket of special setting, catheterostat " unsettled " is held on a support system, then utilize the conduit of catheterostat as locating guide device, carry out the piling construction of foundation pile, foundation pile and conduit finally carrying out grouting connect, grouting quality can dry method.Which solve construction time unsettled jacket structure fix, stable problem;Next to that solve the problems such as foundation pile positioning for offshore operation, guiding, clip pile, in the region that the depth of water is bigger, the height of catheterostat can be effectively reduced, save steel, this structure construction is easy, the duration economizes, exploitativeness is good, the area relatively big suitable in the depth of water, cover layer is thicker, is at sea with a wide range of applications in wind energy project.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.
Fig. 1 is the vertical exhibition opening structure schematic diagram of the embodiment of the present invention 1 one kinds catheterostat offshore wind turbine foundation with bracket.
Fig. 2 is construction bracket vertical exhibition opening structure schematic diagram when adopting VERTICAL TUBE to add horizontal steel cantilever.
Fig. 3 is Section A-A schematic diagram in Fig. 2.
Fig. 4 is the vertical exhibition opening structure schematic diagram of the another kind of catheterostat offshore wind turbine foundation with bracket of the embodiment of the present invention 2.
Fig. 5 is section B-B schematic diagram in Fig. 4.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, it should be noted that when not conflicting, embodiments herein and the feature in embodiment can be mutually combined.
The core of the present invention is in that to provide a kind of catheterostat offshore wind turbine foundation with bracket and construction method thereof, utilize the auxiliary pile first constructed as a support system, by bracket, jacket structure " unsettled " is held on a support system, then utilize the conduit of catheterostat as locating guide device, carry out the piling construction of foundation pile, foundation pile and conduit finally carrying out grouting connect, grouting quality can dry method.Which solve construction time unsettled jacket structure fix, stable problem;Next to that solve the problems such as foundation pile positioning for offshore operation, guiding, clip pile, the height of catheterostat can be reduced when the depth of water is bigger, save steel.Its convenient construction, duration economize, exploitativeness is good, is particularly well-suited to the area that the depth of water is relatively big, cover layer is thicker.
As shown in Figure 1, 2, 3, the catheterostat offshore wind turbine foundation with bracket that the embodiment of the present invention 1 provides, including catheterostat 11, it is arranged in the conduit 12 of catheterostat 11 and extends the foundation pile 15 embedding ground, it is arranged at the bracket flange 13 on conduit 12, by the construction bracket 14 that bracket flange 13 is connected with conduit 12.Ring base 19 based on catheterostat 11 top, foundation ring base 19 is provided with the foundation ring 20 for being connected with blower fan tower barrel.
As preferred embodiment, described bracket flange 13 is arranged at the top of conduit 12, is fixed on conduit 12, it is of course also possible to adopt other similar component being easy to be connected with construction bracket 14 and dismantle to replace bracket flange 13.Set Flange joint should meet the requirement of strength supporting catheterostat.
As preferred embodiment, described construction bracket 14 is the steel cantilever that level is overhanging, it is connected by bracket flange 13 with conduit 12 top, can install and dismantle, it is held on the gooseneck 17 between auxiliary pile 16 as the Force transmission parts of catheterostat 11 during for constructing, gooseneck 17 can be girder steel or steel truss, meets the requirement of strength supporting catheterostat.Catheterostat 11 is held on the support system constructed in advance by bracket 14 of constructing; location and the leveling of catheterostat 11 can be carried out before foundation pile 15 is constructed, fix; and guarantee structure remained stable when foundation pile 15 is constructed; catheterostat 11 can be made need not to be seated sea bed mud face simultaneously but be suspended from water; reduce the height of catheterostat 11, save cost and be easy to construction.Construction bracket 14 is alternatively VERTICAL TUBE and adds horizontal steel cantilever, and VERTICAL TUBE is changeable, and diameter is not less than conduit 12.Arranging and the drift reducing foundation pile 15 for the ease of anti-collision facility, the integral position of catheterostat 11 can be reduced to support body main body and submerge in water, only expose foundation ring base 19 and foundation ring 20, now can arrange longer VERTICAL TUBE realize construction bracket 14 and the water surface more than gooseneck 17 between connection, now Flange joint is preferably waterproof setting, as shown in Figure 2.
As preferred embodiment, described foundation pile 15 is steel-pipe pile, and its external diameter is more slightly smaller than the internal diameter of conduit 12 so that it is can pass through conduit 12 and go deep into seabed mud layer, and leaves a fixed gap between and meet the needs that grouting connects.The top of foundation pile 15 flushes/stretches out the top of conduit 12, it is possible to utilize Pile feeder to be submerged into below the top of conduit 12 when pile sinking, to save steel.
As preferred embodiment, the pile body of described foundation pile 15 and conduit 12 partly overlap, and the annulus at overlapping interval is starched and connected, and can check the quality of mortar 18 after draining the water in conduit 12, guarantee the quality that grouting connects, solve the problem that conventional subsea grouting quality is not easily checked.Also can increase pouring reinforcement concrete 21 in foundation pile 15 with conduit 12, to strengthen the bonding strength between the rigidity of foundation pile 15 and foundation pile 15 and conduit 12, the reinforced concrete variable-length of filling.Certainly, in order to increase the cohesive force of grouting or perfusion concrete and tube wall, shear connector need to be preset on corresponding tube wall.
As shown in Figure 4,5, the another kind of catheterostat offshore wind turbine foundation with bracket that the embodiment of the present invention 2 provides, including catheterostat 11, the bracket flange 13 that is arranged on the conduit 12 of catheterostat agent structure 11, by the construction bracket 14 that bracket flange 13 is connected with conduit 12.Ring base 19 based on catheterostat 11 top, foundation ring base 19 is provided with the foundation ring 20 for being connected with blower fan tower barrel.
As preferred embodiment, described bracket flange 13 is arranged at the epimere side of conduit 12, is fixed on conduit 12.
As preferred embodiment, described construction bracket 14 is the steel cantilever that level is overhanging, is connected by bracket flange 13 with conduit 12 epimere side, can install and dismantle.May be used without other similar component being easily installed and dismantling and replace construction bracket 14.
The construction method of a kind of catheterostat offshore wind turbine foundation with bracket that the embodiment of the present invention provides, comprises the steps:
S1, making catheterostat 11, bracket flange 13, construction bracket 14, foundation pile 15, auxiliary pile 16, gooseneck 17 etc., be fixedly installed on the conduit 12 of catheterostat 11 by bracket flange 13, be installed on conduit 12 by bracket flange 13 by bracket 14;
After S2, measurement and positioning, marine guidance piling equipment is utilized to carry out the piling construction of auxiliary pile 16 in precalculated position, with two piles of a determining deviation for one group, implement one group of auxiliary pile 16 in the position corresponding to the every conduit 12 of catheterostat 11, the bearing capacity of auxiliary pile 16 should meet the requirement of predetermined temporary support catheterostat 11;
S3, between two piles often organizing auxiliary pile 16 weld gooseneck 17, the bottom surface absolute altitude of each gooseneck 17 should exceed working water level, and its elevation of top surface is determined by design, and keeps level;
Catheterostat 11 is held between auxiliary pile 16 on gooseneck 17 by bracket 14 by S4, the marine crane gear of utilization so that it is reaches predetermined absolute altitude and perpendicularity, and takes fixation to remain stable for;
S5, utilize catheterostat 11 as platform, conduit 12 as locating guide device, adopt pile driving equipment to carry out the piling construction of foundation pile 15 inside conduit 12, make foundation pile 15 bottom reach projected depth, its top can lower than/flush/stretch out the top of conduit 12;
S6, the annular space perfusion mortar 18 formed with conduit 12 at foundation pile 15, make foundation pile 15 fix with conduit 12 and be connected;Dry method of can drawing water is in the milk 18 mass, also can in foundation pile 15 with conduit 12 increase pouring reinforcement concrete 21;
S7, turning on flange bolt Demolition Construction bracket 14, the gooseneck 17 between cutting auxiliary pile 16, auxiliary pile 16 is removed in pile pulling;
S8, by the foundation ring base 19 on catheterostat 11 top arrange foundation ring 20 blower fan tower barrel is installed.
Above description elaborates a lot of detail so that fully understanding the present invention, but, the present invention can also adopt other to be different from other similar fashion described here to implement, it is thus impossible to be interpreted as limiting the scope of the invention.
In a word; although the present invention illustrates above-mentioned preferred implementation, but it should be mentioned that, although those skilled in the art can carry out various change and remodeling; unless such change and remodeling substantially deviate from the scope of the present invention, otherwise should be construed as being included in protection scope of the present invention.

Claims (6)

1. the catheterostat offshore wind turbine foundation with bracket, it is characterized in that: include catheterostat (11), be arranged at the conduit (12) of catheterostat (11) in and extend the foundation pile (15) embedding ground, it is arranged at the bracket flange (13) on conduit (12), by the construction bracket (14) that bracket flange (13) is connected with conduit (12).
2. the catheterostat offshore wind turbine foundation with bracket according to claim 1, it is characterised in that: described bracket flange (13) is arranged at the top of conduit (12), or is arranged at the epimere side of conduit (12), is fixed on conduit (12).
3. the catheterostat offshore wind turbine foundation with bracket according to claim 1, it is characterized in that: described construction bracket (14) is the overhanging steel cantilever of level, or VERTICAL TUBE adds horizontal steel cantilever, it is connected by bracket flange (13) with conduit (12), can install and dismantle.
4. the catheterostat offshore wind turbine foundation with bracket according to claim 1, it is characterized in that: described foundation pile (15) is steel-pipe pile, no less than 3, its external diameter is more slightly smaller than the internal diameter of conduit (12), its top can lower than/flush/stretch out the top of conduit (12).
5. the catheterostat offshore wind turbine foundation with bracket according to claim 4, it is characterized in that: the pile body of described foundation pile (15) and conduit (12) partly overlap, annulus at overlapping interval fixes connection by being in the milk, and also can increase pouring reinforcement concrete (21) in foundation pile (15) with conduit (12).
6. the construction method of the catheterostat offshore wind turbine foundation with bracket, it is characterised in that comprise the steps:
S1, making catheterostat (11), bracket flange (13), construction bracket (14), foundation pile (15), auxiliary pile (16), gooseneck (17) etc., bracket flange (13) is fixedly installed on the conduit (12) of catheterostat (11), construction bracket (14) is installed on conduit (12) by bracket flange (13);
After S2, measurement and positioning, marine guidance piling equipment is utilized to carry out the piling construction of auxiliary pile (16) in precalculated position, with two piles of a determining deviation for one group, implementing one group of auxiliary pile (16) in the outer fix corresponding to the every conduit (12) of catheterostat (11), the bearing capacity of auxiliary pile (16) should meet the requirement of predetermined temporary support catheterostat (11);
S3, welding gooseneck (17) between two piles often organizing auxiliary pile (16), the bottom surface absolute altitude of each gooseneck (17) should exceed working water level, and its elevation of top surface is determined by design, and keeps level;
S4, utilize marine crane gear to be held on by bracket (14) of constructing by catheterostat (11) often to organize between auxiliary pile (16) on gooseneck (17) so that it is reach predetermined absolute altitude and perpendicularity, and take fixation to remain stable for;
S5, utilize catheterostat (11) as platform, conduit (12) as locating guide device, adopt pile driving equipment at the internal piling construction carrying out foundation pile (15) of conduit (12), make foundation pile (15) bottom reach projected depth, its top can lower than/flush/stretch out the top of conduit (12);
S6, the annular space perfusion mortar (18) formed at foundation pile (15) and conduit (12), make foundation pile (15) and conduit (12) fix and be connected;Dry method of can drawing water grouting (18) quality, also can increase pouring reinforcement concrete (21) in foundation pile (15) with conduit (12);
S7, turning on flange bolt Demolition Construction bracket (14), the gooseneck (17) between auxiliary pile (16) is often organized in cutting, and auxiliary pile (16) is removed in pile pulling;
S8, foundation ring (20) the installation blower fan tower barrel above arranged by the foundation ring base (19) on catheterostat (11) top.
CN201410807021.4A 2014-12-23 2014-12-23 Jacket offshore wind turbine foundation with brackets and construction method thereof Pending CN105780802A (en)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106013213A (en) * 2016-07-25 2016-10-12 福建永福电力设计股份有限公司 Offshore wind power pile foundation capable of increasing unit capacity and using method thereof
CN107326887A (en) * 2017-06-22 2017-11-07 广东华尔辰海上风电工程有限责任公司 Offshore wind farm elder generation pile leader frame construction method of installation
US10801302B2 (en) 2018-11-26 2020-10-13 China University Of Petroleum-Beijing Inner start-up tool of conduit bearing capacity reinforcing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106013213A (en) * 2016-07-25 2016-10-12 福建永福电力设计股份有限公司 Offshore wind power pile foundation capable of increasing unit capacity and using method thereof
CN106013213B (en) * 2016-07-25 2018-05-25 福建永福电力设计股份有限公司 A kind of offshore wind farm pile foundation and its application method for increasing single-machine capacity
CN107326887A (en) * 2017-06-22 2017-11-07 广东华尔辰海上风电工程有限责任公司 Offshore wind farm elder generation pile leader frame construction method of installation
CN107326887B (en) * 2017-06-22 2019-06-18 广东华尔辰海上风电工程有限责任公司 Offshore wind farm elder generation pile leader frame construction method of installation
US10801302B2 (en) 2018-11-26 2020-10-13 China University Of Petroleum-Beijing Inner start-up tool of conduit bearing capacity reinforcing device

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Application publication date: 20160720

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