CN109930624A - A kind of embedding petrographic province blower foundation of offshore wind farm and construction method - Google Patents

A kind of embedding petrographic province blower foundation of offshore wind farm and construction method Download PDF

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Publication number
CN109930624A
CN109930624A CN201910274592.9A CN201910274592A CN109930624A CN 109930624 A CN109930624 A CN 109930624A CN 201910274592 A CN201910274592 A CN 201910274592A CN 109930624 A CN109930624 A CN 109930624A
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CN
China
Prior art keywords
jacket
embedding
piling bar
construction
blower foundation
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Pending
Application number
CN201910274592.9A
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Chinese (zh)
Inventor
刘金全
周全智
李红有
迟洪明
吴永祥
全建军
沈石水
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.)
Longyuan Beijing Wind Power Engineering Design and Consultation Co Ltd
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Longyuan Beijing Wind Power Engineering Design and Consultation 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.)
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Application filed by Longyuan Beijing Wind Power Engineering Design and Consultation Co Ltd filed Critical Longyuan Beijing Wind Power Engineering Design and Consultation Co Ltd
Priority to CN201910274592.9A priority Critical patent/CN109930624A/en
Publication of CN109930624A publication Critical patent/CN109930624A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of embedding petrographic province blower foundation of offshore wind farm and construction method, blower foundation includes piling bar, jacket, transformational structure;Jacket is more, and more jackets are fixedly connected by horizontal brace or diagonal brace;Piling bar is inserted in jacket;The lower end of piling bar is provided with overlap joint stem, embedding along stem;Transformational structure is set to the top of jacket and piling bar.The construction method of above-mentioned blower foundation, including Prefabricated steel construction product, decentralization jacket, piling, installation temporary construction platform and equipment, embedding rock, remove temporary construction platform and transformational structure is installed etc..The present invention drives piles mode after may be implemented by installing jacket in advance, has the advantages that construction is simple, easy to operate, duty cycle is short, can avoid underwater operation;The factory floor machine-shaping by land of all steel constructions significantly avoids on-site assembly construction, has significantly saved construction period;Temporary construction platform installation is simple and convenient and reuses after can dismantling.

Description

A kind of embedding petrographic province blower foundation of offshore wind farm and construction method
Technical field
The present invention relates to a kind of blower foundation and construction method more particularly to a kind of embedding petrographic province blower foundation of offshore wind farm and Construction method.
Background technique
As the exploitation of wind energy on the sea is gradually expanded, embedding rock construction is carried out in rock geology gradually becomes wind energy on the sea Key problem in exploitation, the blower foundation cost of embedding petrographic province seriously restrict the cost of marine wind electric field, therefore offshore wind farm The blower foundation of embedding petrographic province just seems particularly critical than choosing.
The embedding rock blower foundation form of offshore wind farm mainly has High-Rise Pile Cap Foundation and single-pile foundation at present.Wherein, high pile Stylobate plinth generally comprises 6-8 root taper pile, after taper pile is fixed, carries out the embedding rock construction of stem at stake bottom, top carries out concrete bearing platform It pours.The quantity of embedded rock pile used in the blower foundation is more, leads to marine borehole cleaning, drilling, the embedding rock construction working of bottom stem Amount is big, and along with top also needs the installation of progress steel jacket box and concrete bearing platform to pour, process is more, and construction efficiency is low, additionally, due to Stake be it is inclined, not only drilling efficiency is low, generally also needs to set up steady stake platform, construction period is considerably long, to marine weather window Phase requires high.
And single-pile foundation stake diameter is generally large, with the increase of the depth of water and blower, maximum diameter of pile is up to 8m.Since single pile is straight Diameter is big, and buried depth is deeper, big to the diametric requirements of drill hole of drilling machine, it is high to lead to project cost, and the embedding rock of single-pile foundation generally needs Secondary pore-forming, i.e., primary drilling, second reaming, construction efficiency is very low, and the construction period is long, and the weather window phase requires high.In addition, single Pile foundation also needs to set up special offshore construction platform and fixed drilling machine drills, and there are long construction periods, and cost is high, application The shallower disadvantage of the sea area depth of water.
In order to reduce the cost of offshore wind turbine foundation, shorten construction period, improve the safety of offshore construction, and adapt to compared with Exploitation requirement of deep-sea domain wind power plant under the conditions of rock foundation, needs to propose a kind of novel embedding petrographic province blower base of offshore wind farm Plinth and construction method.
Summary of the invention
In order to solve shortcoming present in above-mentioned technology, the present invention provides a kind of embedding petrographic province blower bases of offshore wind farm Plinth and construction method.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of embedding petrographic province blower base of offshore wind farm Plinth, including piling bar further include jacket, transformational structure, overlap stem, is embedding along stem;Jacket is more, and more jackets are logical It crosses horizontal brace or diagonal brace is fixedly connected;
Piling bar is inserted in jacket, and the upper end is mutually welded by the upper end of connecting plate and jacket;The length of piling bar is big In the length of jacket;
The lower end of piling bar is provided with overlap joint stem;The lower end of overlap joint stem is provided with embedding along stem;Transformational structure is set to The top of jacket and piling bar.
Further, transformational structure includes head tree, supporting leg, transition Taper Pipe;Supporting leg is more, more supporting leg edges The outer wall of head tree radially arranges;The lower end of supporting leg is fixedly installed transition Taper Pipe;The lower end of transition Taper Pipe is arranged There is cone structure, transition Taper Pipe is inserted in the top of piling bar by cone structure.
Further, piling bar is connected by transformational structure with blower fan tower barrel.
Further, overlap stem, it is embedding along stem using steel reinforcement cage as skeleton, inside and outside casting concrete and form;Overlap joint Stem is set to the interior lower end of piling bar.
Further, the lower end of jacket is provided with mud mat, for preventing in installation process jacket because of Gravitative Loads Lower sedimentation is excessive.
Further, welding is provided with wedge on the inner wall of jacket, for carrying out Horizontal limiting to piling bar.
Further, the upper end frame of jacket and piling bar is equipped with temporary construction platform.
Further, jacket is vertical type.Alternatively, jacket is inclined, gradient is 7:1~12:1.
A kind of construction method of the embedding petrographic province blower foundation of offshore wind farm, comprising the following steps:
A, by land factory floor to jacket, piling bar, transformational structure, temporary construction platform, overlap joint stem and embedding along core Column steel reinforcement cage is pre-formed;
B, jacket is transferred to working sea area sea bed, because there is mud mat, the sedimentation of jacket is obtained effectively Control;
C, piling work is carried out, piling bar is passed through into jacket and is squeezed into the bottom end of soil layer;
D, after piling, welded connecting plate, so that piling bar is connected as one with jacket;
E, the top of piling bar is cut to concordantly, then the embedding rock temporary construction platform of installation drilling, and in temporary construction Embedding rock equipment is installed on platform;
F, along piling bar to below soil layer horizon d punch, can more bench drill machines operate simultaneously;After punching to predetermined depth, Steel reinforcement cage and casting concrete are transferred into the hole of horizon d and soil layer along piling bar, completes embedding rock effect;
G, after embedding rock construction, embedding rock equipment and temporary construction platform are removed;
H, transformational structure is installed, blower foundation construction is completed.
The present invention drives piles mode after may be implemented by installing jacket in advance, has construction is simple, easy to operate, operation Period is short, can avoid the advantages of underwater operation;The factory floor machine-shaping by land of all steel constructions, significantly avoids On-site assembly construction, has significantly saved construction period;Temporary construction platform installation is simple and convenient and benefit is repeated after can dismantling With.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the structural schematic diagram that piling bar is connected with jacket by connecting plate.
Fig. 3 is the enlarged structure schematic diagram of transformational structure.
Fig. 4 is the structural schematic diagram that piling bar is connected with jacket by wedge.
Fig. 5 is installation condition schematic diagram of the jacket on working sea area sea bed.
Fig. 6 is piling status diagram.
Fig. 7 is the installation condition schematic diagram of temporary construction platform.
Fig. 8 is the status diagram of embedding rock operation.
Fig. 9 is the status diagram of dismounting temporary construction platform after the completion of embedding rock operation.
Figure 10 is the installation process schematic diagram of transformational structure.
Figure 11 is the overall structure figure of the blower foundation after transformational structure installs.
In figure: 1, transformational structure;2, jacket;3, connecting plate;4, diagonal brace;5, mud mat;6, piling bar;7, stem is overlapped; 8, embedding along stem;9, wedge;10, transition Taper Pipe;11, temporary construction platform;12, head tree;13, supporting leg;14, soil layer;15, Horizon d.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
A kind of embedding petrographic province blower foundation of offshore wind farm shown in Fig. 1-2, including piling bar 6, further include jacket 2, Change-over knot Structure 1 overlaps stem 7, is embedding along stem 8;Jacket 2 is more, and more jackets are fixedly connected by horizontal brace or diagonal brace 4;
Piling bar 6 is inserted in jacket 2, and the upper end is mutually welded by connecting plate 3 and the upper end of jacket 2;The length of piling bar 6 Degree is greater than the length of jacket 2, carries out embedding rock effect convenient for being inserted in embedding petrographic province;
The lower end of piling bar 6 is provided with overlap joint stem 7;The lower end of overlap joint stem 7 is provided with embedding along stem 8;Transformational structure 1 is set It is placed in the top of jacket and piling bar, for mutually overlapping jacket with blower fan tower barrel.
As shown in figure 3, transformational structure 1 includes head tree 12, supporting leg 13, transition Taper Pipe 10;Blower fan tower barrel may be disposed at The upper end of head tree 12;Piling bar 6 is connected by transformational structure 1 with blower fan tower barrel.Supporting leg 13 is more, more supporting leg edges The outer wall of head tree 12 radially arranges;The lower end of supporting leg 13 is fixedly installed transition Taper Pipe 10;Transition Taper Pipe 10 Lower end is provided with cone structure, and transition Taper Pipe 10 is inserted in the top of piling bar 6 by cone structure.
Overlap stem 7, it is embedding along stem 8 using steel reinforcement cage as skeleton, inside and outside casting concrete and form;Overlap joint stem 7 is set It is placed in the interior lower end of piling bar 6.
The lower end of jacket 2 is provided with mud mat 5, for preventing in installation process jacket because settling under Gravitative Loads Greatly.
As shown in figure 4, welding is provided with wedge 9 on the inner wall of jacket 2, it is served only for carrying out Horizontal limiting to piling bar 6, and Do not transmit vertical force and moment of flexure.
The upper end frame of jacket 2 and piling bar 6 is equipped with temporary construction platform 11.
Jacket 2 is vertical type or inclined, its gradient is 7:1~12:1 when being inclined.
A kind of construction method of the embedding petrographic province blower foundation of offshore wind farm, comprising the following steps:
A, by land factory floor to jacket 2, piling bar 6, transformational structure 1, temporary construction platform 11, overlap joint 7 and of stem It is embedding pre-formed with steel reinforcement cage along stem 8;
B, jacket 2 is transferred to working sea area sea bed, because there is mud mat 5, the sedimentation of jacket 2 is had Effect control, as shown in Figure 5;
C, piling work is carried out, piling bar 6 is passed through into jacket 2 and is squeezed into the bottom end of soil layer, as shown in Figure 6;
D, after piling, welded connecting plate 3, so that piling bar 6 is connected as one with jacket 2;
E, the top of piling bar 6 being cut to concordantly, then installation drills embedding rock with temporary construction platform 11 (shown in Fig. 7), And embedding rock equipment is installed on temporary construction platform 11;
F, along piling bar 6 to below soil layer horizon d punch, can more bench drill machines operate simultaneously;It punches to predetermined depth Afterwards, steel reinforcement cage and casting concrete are transferred into the hole of horizon d and soil layer along piling bar 6, completes embedding rock effect (shown in Fig. 8);
G, after embedding rock construction, embedding rock equipment and temporary construction platform 11 are removed (shown in Fig. 9);
H, transformational structure 1 is installed, blower foundation construction is completed (shown in Figure 10, Figure 11).
Compared with prior art, the present invention having the advantage that
1) compared to first piling mode universal at present, the present invention drives piles after may be implemented, that is, first installs jacket It drives piles again and embedding rock, there is the advantages of construction is simple is convenient, the period is short, avoids underwater operation;
2) all steel constructions factory floor machine-shaping by land significantly avoids on-site assembly construction, significantly Construction period is saved;
3) docking between jacket and blower fan tower barrel, and the lower end tool of transformational structure are realized by the transformational structure on top There is cone structure, can play the guiding role in connection, it is convenient welding, easy to operate;
4) welded together between jacket and piling bar by connecting plate, and be provided with wedge between jacket and piling bar, It can be achieved to avoid traditional grouting operation to the Horizontal limiting of piling bar;
5) lower end of jacket is provided with mud mat, can prevent jacket from sinking because of Gravitative Loads during the installation process Excessive problem drops;
6) temporary construction platform can be set on the top of jacket and carries out embedding rock effect, reduce conventional method and at sea take If the workload of embedding rock platform;In addition, after the completion of embedding rock, temporary construction platform is dismountable and transformational structure of transferring, and repeats benefit With.
Above embodiment is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck The variations, modifications, additions or substitutions that the technical staff in domain is made within the scope of technical solution of the present invention, also belong to this hair Bright protection scope.

Claims (10)

1. a kind of embedding petrographic province blower foundation of offshore wind farm, including piling bar (6), it is characterised in that: further include jacket (2), conversion Structure (1) overlaps stem (7), is embedding along stem (8);The jacket (2) is more, and more jackets are by horizontal brace or tiltedly Support (4) is fixedly connected;
The piling bar (6) is inserted in jacket (2), and the upper end is mutually welded by connecting plate (3) and the upper end of jacket (2); The length of the piling bar (6) is greater than the length of jacket (2);
The lower end of the piling bar (6) is provided with overlap joint stem (7);The lower end of overlap joint stem (7) is provided with embedding along stem (8);The transformational structure (1) is set to the top of jacket and piling bar.
2. the embedding petrographic province blower foundation of offshore wind farm according to claim 1, it is characterised in that: transformational structure (1) packet Include head tree (12), supporting leg (13), transition Taper Pipe (10);The supporting leg (13) is more, and more supporting legs are along head tree (12) outer wall radially arranges;The lower end of the supporting leg (13) is fixedly installed transition Taper Pipe (10);The transition The lower end of Taper Pipe (10) is provided with cone structure, and transition Taper Pipe (10) is inserted in the top of piling bar (6) by cone structure.
3. the embedding petrographic province blower foundation of offshore wind farm according to claim 2, it is characterised in that: the piling bar (6) is by turning Structure (1) is changed to be connected with blower fan tower barrel.
4. the embedding petrographic province blower foundation of offshore wind farm according to claim 1 or 2, it is characterised in that: the overlap joint stem (7), it is embedding along stem (8) using steel reinforcement cage as skeleton, inside and outside casting concrete and form;The overlap joint stem (7) is set to steel The interior lower end of stake (6).
5. the embedding petrographic province blower foundation of offshore wind farm according to claim 4, it is characterised in that: under the jacket (2) End is provided with mud mat (5), for preventing jacket in installation process excessive because settling under Gravitative Loads.
6. the embedding petrographic province blower foundation of offshore wind farm according to claim 5, it is characterised in that: the jacket (2) it is interior Welding is provided with wedge (9) on wall, for carrying out Horizontal limiting to piling bar (6).
7. the embedding petrographic province blower foundation of offshore wind farm according to claim 6, it is characterised in that: the jacket (2) and steel The upper end frame of stake (6) is equipped with temporary construction platform (11).
8. the embedding petrographic province blower foundation of offshore wind farm according to claim 7, it is characterised in that: the jacket (2) is straight It is vertical.
9. the embedding petrographic province blower foundation of offshore wind farm according to claim 7, it is characterised in that: the jacket (2) is oblique Formula, gradient are 7:1~12:1.
10. a kind of construction method of the embedding petrographic province blower foundation of offshore wind farm as claimed in claim 7, it is characterised in that: described Method the following steps are included:
A, by land factory floor to jacket (2), piling bar (6), transformational structure (1), temporary construction platform (11), overlap joint stem (7) and it is embedding pre-formed with steel reinforcement cage along stem (8);
B, jacket (2) are transferred to working sea area sea bed, because playing the role of mud mat (5), the sedimentation of jacket (2) is obtained Effectively control;
C, piling work is carried out, piling bar (6) are passed through into jacket (2) and is squeezed into the bottom end of soil layer;
D, after piling, welded connecting plate (3), so that piling bar (6) is connected as one with jacket (2);
E, the top of piling bar (6) is cut to concordantly, then installation drills embedding rock with temporary construction platform (11), and applies temporarily Embedding rock equipment is installed on work platform (11);
F, along piling bar (6) to below soil layer horizon d punch, can more bench drill machines operate simultaneously;After punching to predetermined depth, Steel reinforcement cage and casting concrete are transferred into the hole of horizon d and soil layer along piling bar (6), completes embedding rock effect;
G, after embedding rock construction, embedding rock equipment and temporary construction platform (11) are removed;
H, transformational structure (1) is installed, completes blower foundation construction.
CN201910274592.9A 2019-04-08 2019-04-08 A kind of embedding petrographic province blower foundation of offshore wind farm and construction method Pending CN109930624A (en)

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Application Number Priority Date Filing Date Title
CN201910274592.9A CN109930624A (en) 2019-04-08 2019-04-08 A kind of embedding petrographic province blower foundation of offshore wind farm and construction method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112112182A (en) * 2020-08-14 2020-12-22 海洋石油工程股份有限公司 Jacket platform

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112112182A (en) * 2020-08-14 2020-12-22 海洋石油工程股份有限公司 Jacket platform

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