CN107386313B - Leveling-free cylinder foundation for offshore wind power jacket construction and installation method - Google Patents
Leveling-free cylinder foundation for offshore wind power jacket construction and installation method Download PDFInfo
- Publication number
- CN107386313B CN107386313B CN201710699399.0A CN201710699399A CN107386313B CN 107386313 B CN107386313 B CN 107386313B CN 201710699399 A CN201710699399 A CN 201710699399A CN 107386313 B CN107386313 B CN 107386313B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- jacket
- cylinder
- foundation
- wind power
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
- Wind Motors (AREA)
Abstract
The leveling-free cylinder foundation for offshore wind power jacket construction and the installation method comprise an offshore wind power construction jacket horizontally arranged on a surface of a sea bed and a cylinder foundation for fixing the offshore wind power construction jacket. The cylinder foundation comprises a sleeve, and the sleeve comprises an outer wall positioned on the outer side and a guide reinforcing rib with a guide function; the outer wall and the guide reinforcing rib are sealed by the bottom plate to form an integral structure; the sleeves are provided with three groups of sleeves which are arranged in a triangular shape or four groups of sleeves which are arranged in a square shape, and the adjacent sleeves are fixedly connected with the complete set of sleeve groups through reinforcing support rods; the sleeve set is fixed to the upper part of the cylinder by means of a-type or B-type. Compared with the prior art, the method has the advantages of accurate positioning, fewer processes, improved working efficiency, fewer ships and machines, and the like, is suitable for the sea areas of various clay and sandy stratums, and is particularly suitable for the foundation offshore wind power jacket construction with limited application of the steel pipe pile due to deep sea, too large buried depth of a bearing stratum, and the like.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation, in particular to a leveling-free cylinder foundation for offshore wind power jacket construction in a deep sea area and an installation method.
Background
Wind power is wind power generation or wind power generation, and the principle of wind power generation is that wind power is utilized to drive windmill blades to rotate so as to drive a generator to generate electricity.
Wind power generation is the fastest-developing green energy technology in the world, and people have noticed some limitations on land wind energy utilization, such as large occupied area, noise pollution and the like, while land wind power plant construction is rapidly developed. Offshore wind power (namely offshore wind power generation) has abundant resources, stable wind speed and less negative influence on the environment; the wind turbine generator of the offshore wind power is far away from the coast, and the noise and visual interference are small; the offshore wind turbine generator set has large single machine capacity and high annual utilization hours; and does not occupy land resources, so the development is rapidly carried out in recent years. The fixing of the offshore wind turbine needs to be provided with a specially designed foundation structure, at present, the foundation structure of the offshore wind turbine has two types, namely a fixed foundation and a floating foundation, wherein the fixed foundation comprises a pile foundation structure, a gravity foundation structure, a negative pressure bucket foundation structure and a jacket foundation structure; in offshore wind power, the application of jacket foundations has become more and more common, and the jacket foundations have also been tried domestically. The jacket foundation which is one of the foundation structure forms of the offshore wind turbine generator set has the characteristics of light weight, stable structure, wide application range and the like.
With the rapid development of domestic offshore wind power in recent years, high pile cap foundations, single pile foundations, gravity foundations, jacket foundations and the like are gradually applied, and the application proportion of jacket foundations is gradually increased in recent years in China, wherein the jacket steel pipe pile foundations are applied more, and the jacket steel pipe pile foundations have the advantages of being excellent in structural stress, low in requirements for seabed, suitable for deep water in far sea, high in construction speed and the like.
However, the jacket steel pipe pile foundation has the problems of more working procedures, more ship machines, difficulty in leveling and positioning, difficulty in application in the sea area with limited steel pipe pile construction, higher application cost, less application and the like.
Disclosure of Invention
The invention aims to provide a leveling-free cylinder foundation and an installation method for offshore wind power jacket construction in an open sea deep water area, and compared with a conventional jacket steel pipe pile foundation, the offshore wind power jacket cylinder foundation has the advantages of accurate positioning, fewer processes, improved working efficiency, fewer ships and engines, and the like, is suitable for sea areas with various clay and sandy stratums, and is particularly suitable for foundation offshore wind power jacket construction with limited application of steel pipe piles due to open sea deep water, too large bearing layer burial depth and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: a leveling-free cylinder foundation for offshore wind power jacket construction in an open sea deep water area comprises an offshore wind power construction jacket horizontally arranged on a surface of a sea bed and a cylinder foundation for fixing the offshore wind power construction jacket.
The jacket comprises a square platform positioned at the top; a vertical round pipe for installing a wind turbine pile is fixed at the upper part of the square platform; four supporting legs which are outwards propped out are arranged at the bottom of the square platform, and adjacent supporting legs are connected and fixed through crossed reinforcing supporting rods; the bottom of the supporting leg is provided with a vertically fixed conduit frame leg.
The cylinder foundation comprises a sleeve, and the sleeve comprises an outer wall positioned on the outer side and a guide reinforcing rib with a guide function; the outer wall and the guide reinforcing rib are sealed by the bottom plate to form an integral structure; the sleeves are provided with three groups of sleeves which are arranged in a triangular shape or four groups of sleeves which are arranged in a square shape, and the adjacent sleeves are fixedly connected with the complete set of sleeve groups through reinforcing support rods; the sleeve set is fixed to the upper part of the cylinder by means of a-type or B-type.
In the A type, circular arc-shaped cylinders are symmetrically fixed on the upper side and the lower side of the sleeve, and the chamfer angle of the upper part of the guide reinforcing rib is consistent with the bell mouth chamfer angle of the outer wall of the sleeve. In the type B, a shear key is arranged on the outer side of the sleeve, the outer side of the shear key is connected to the inner side of the circular cylinder in a welding mode, and the inner side of the shear key is connected to the outer side of the sleeve in a welding mode;
the guide pipe frame legs of the guide pipe frame correspondingly extend into the guide reinforcing ribs of the sleeve and gaps between the guide reinforcing ribs respectively; and sealing and fixing mortar is filled in the gap between the conduit frame leg and the sleeve.
Compared with the prior art, the invention has the following beneficial effects:
(1) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the steel pipe pile foundation needs a pile driving ship, and the cylinder only needs a crane ship, so that ship equipment is reduced, and the cost of ship equipment is saved;
(2) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the multi-pile repeated vibration and sinking is reduced to the cylinder primary vibration and sinking, so that the construction procedures are reduced, and the construction efficiency is improved;
(3) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the jacket cylinder foundation leveling has certain advantages, the verticality can be adjusted for leveling in the process of vibrating and sinking the cylinder through multi-hammer linkage of the vibration hammer, the horizontal tolerance of the sleeve is ensured to meet the requirement, and the jacket cylinder foundation leveling is convenient and rapid;
(4) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the accurate positioning of the base plane of the jacket cylinder has certain advantages, only one time of accurate positioning is needed, and the relative positions of the sleeves around the cylinder are fixed, so that the construction precision is improved, and the jacket installation is free of leveling;
(5) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the top surface of the jacket cylinder foundation is more convenient to be used as a simple construction platform, and the safety coefficient of offshore operation is improved;
(6) the sleeve with the guide reinforcing rib structure can reserve certain margin to meet installation conditions, the problem of grouting compactness between the inner cylinder and the conduit frame leg is solved, the cylinder can be designed into a concrete cylinder, a pre-embedded sleeve can be fixedly adopted, and the firmness of the sleeve through a pre-embedded reinforcing system in concrete is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic front view of a vertical cross-sectional structure of a type A sleeve according to the present invention;
FIG. 2 is a schematic top view of a type A sleeve according to the present invention;
FIG. 3 is a schematic front view of a vertical cross-sectional structure of a type A sleeve according to the present invention;
FIG. 4 is a schematic front view of a vertical cross-sectional structure of a type A sleeve according to the present invention;
FIG. 5 is a schematic top view of a type A cylinder base according to the present invention;
FIG. 6 is a schematic front view of a vertical cross-sectional structure of a type B sleeve according to the present invention;
FIG. 7 is a schematic top view of a cylindrical foundation of type B of the present invention;
FIG. 8 is a schematic view of the overall configuration of the jacket of the present invention;
fig. 9 is a schematic view of the structure of the mounting portion of the jacket and cylinder base of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
A exempt from to level a drum basis for offshore wind power jacket construction in open sea deep water district, its technical scheme is in brief summary: the steel cylinder or the precast concrete cylinder is integrally manufactured in a land processing plant, the steel cylinder or the precast concrete cylinder is transported to a construction sea area through a barge, the vibration sinking cylinder is in place by utilizing a multi-hammer linkage mode of a crane ship and a hydraulic vibration hammer, and the verticality of the cylinder is controlled during vibration sinking so as to ensure that the top surface of the vibration sinking cylinder is horizontal. And hoisting the jacket by using a crane ship to install, and aligning the jacket column base to the sleeve on the periphery of the cylinder to finish the installation. And (3) grouting and solidifying the high-strength sealing and fixing mortar in the sleeve, and performing subsequent construction procedures of the anemometer tower, the fan and the like after the grouting is solidified.
A exempt from to level drum basis for offshore wind power jacket construction in open sea deep water district, specifically, including the offshore wind power construction jacket 7 of level setting on the sea bed surface with be used for the drum basis of fixed offshore wind power construction jacket 7.
The jacket 7 comprises a square platform 71 at the top; a vertical round pipe 75 for installing a wind driven generator pile is fixed at the upper part of the square platform 71; four supporting legs 72 which are outwards expanded are arranged at the bottom of the square platform 71, and the adjacent supporting legs 72 are fixedly connected through crossed reinforcing supporting rods 73; the bottom of the support leg 72 is provided with a vertically fixed conduit frame leg 74.
The cylinder foundation comprises a sleeve 2 with a double-layer cavity structure, and the sleeve 2 comprises an outer wall 21 positioned on the outer side and a guide reinforcing rib 22 positioned on the inner side; the bottoms of the outer wall 21 and the guide reinforcing rib 22 are sealed through a bottom plate 23 to form an integral structure, the top arrays of the outer wall 21 and the guide reinforcing rib 22 are fixedly provided with the vertically arranged temporary fixing devices 3, and the temporary fixing devices 3 are detached after the cylinder foundation is installed; the sleeves 2 are provided with four groups and are arranged in a square shape (determined according to the number of jacket supporting legs), and the adjacent sleeves 2 are fixedly connected with the whole set of sleeve groups through the reinforcing support rods 1; the sleeve set is fixed to the upper portion of the cylinder 4 by a type a or a type B.
In the A type, circular arc-shaped cylinders 4 are symmetrically fixed on the upper side and the lower side of a sleeve 2, and rib plates 5 are welded between the sleeve 2 and the cylinders 4.
In the B mode, a shear key 6 is arranged on the outer side of the sleeve 2, the outer side of the shear key 6 is welded and connected to the inner side of the circular cylinder 4, and the inner side of the shear key 6 is welded and connected to the outer side of the sleeve 2.
The conduit frame legs 74 of the conduit frame 7 respectively correspondingly extend into the gaps between the guiding reinforcing ribs 22 and the outer wall 21 of the sleeve 2; the gap between conduit bracket leg 74 and sleeve 2 is filled with sealing fixing mortar.
The outer wall 21 of the sleeve 2 is in a horn shape with a wide upper part and a narrow lower part, and plays a role in guiding the jacket during installation, thereby being beneficial to installation; at the same time, the sealing and fixing mortar can be conveniently filled in the gap between the guide reinforcing rib 22 and the outer wall 21.
The two corresponding sides of the conduit frame legs 74 are provided with pulp overflow holes 741 which are symmetrically distributed; the sealing and fixing mortar is filled in the gap between the conduit frame leg 74 and the outer wall 21, and the sealing and fixing mortar can flow into the gap between the conduit frame leg 74 and the guide reinforcing rib 22 through the mortar overflow hole 741, so that the inner side and the outer side of the conduit frame leg 74 are effectively sealed and fixed through the sealing and fixing mortar.
The installation method of the leveling-free cylinder foundation for offshore wind power jacket construction in the open sea deep water area comprises the following steps.
a, assembling and mounting a cylinder foundation;
for type A, firstly, the center position of the guide reinforcing rib 22 is overlapped with the center position of the bottom plate 23, and the contact position of the guide reinforcing rib 22 and the bottom plate 23 is welded; the center position of the outer wall 21 is superposed with the center position of the bottom plate 23, and the contact position of the bottom plate 23 of the outer wall 21 is welded; the sleeve 2 forms a double-layer cavity structure; the temporary fixing devices 3 are respectively arranged between the outer wall 21 and the tops of the guiding reinforcing ribs 22 in an array manner; the four groups of sleeves 2 are arranged into a square, and the reinforcing support rods 1 are welded between the adjacent sleeves 2 to form an integrally closed square assembly; welding the circular arc-shaped cylinders 4 on two sides of the sleeve 2 respectively, and welding the circular arc-shaped cylinders two by two to form a closed circular ring; the sleeve 2 and the cylinder 4 are welded with a rib plate 5; and completing the type A combined installation.
For the type-B, the number of the,
firstly, the center position of the guide reinforcing rib 22 is superposed with the center position of the bottom plate 23, and the contact position of the guide reinforcing rib 22 and the bottom plate 23 is welded; the center position of the outer wall 21 is superposed with the center position of the bottom plate 23, and the contact position of the bottom plate 23 of the outer wall 21 is welded; the sleeve 2 forms a double-layer cavity structure; the temporary fixing devices 3 are respectively arranged between the outer wall 21 and the tops of the guiding reinforcing ribs 22 in an array manner; the four groups of sleeves 2 are arranged into a square, and the shear keys 6 are kept to be vertically outward; and the reinforcing support rods 1 are welded between the adjacent sleeves 2 to form an integrally closed square assembly.
Respectively welding the circular cylinders 4 to the shear keys 6 of the sleeve 2 to form a closed circular ring; and completing the B-type combined installation.
The steel cylinder or the precast concrete cylinder is integrally manufactured in a processing plant, and the allowable deviation of the external dimension of the pipe joint is as follows:
after the A type or the B type is assembled and installed, carrying out ultrasonic flaw detection on each welding line formed by butt welding; after the ultrasonic flaw detection is correct, carrying out paint spraying operation on the A type or the B type; and after the paint spraying operation is finished, placing the paint in a ventilation environment for airing for later use.
The paint spraying operation adopts water-based antirust paint which comprises the following components: 20-29 parts of acrylic resin, 11-18 parts of chlorinated rubber, 4-9 parts of aluminum tripolyphosphate, 7-18 parts of modified nano montmorillonite powder, 31-43 parts of silicon oxide spherulites, 12-25 parts of maleic anhydride, 10-19 parts of water-based high-gloss varnish, 15-25 parts of linoleic acid, 19-22 parts of a flatting agent and 5-7 parts of a defoaming agent.
b, transporting the cylinder foundation in the step a to a construction sea area through a barge, and preventing the cylinder foundation from deforming or dropping paint during the transportation process; determining the specific address of the cylinder foundation to be installed through a GPS positioning system of the crane ship and the barge, and anchoring the crane ship and the barge to the position; the crane ship and the hydraulic vibration hammer are linked in a multi-hammer mode, a rotating shaft of each vibration hammer is connected, synchronization of the speed and the phase of each vibration hammer is forcibly achieved, and a primary vibration sinking cylinder foundation is in place; and controlling the verticality of the cylinder foundation to be less than 3 per mill in the vibration and sedimentation process.
c, horizontally leveling the cylinder foundation preliminarily vibrated and sunk in place; the verticality detector and the height detector are respectively arranged at the top of the sleeve 2, the verticality parameter and the height parameter detected by the verticality detector and the height detector are adjusted by using the hydraulic vibration hammer, the whole verticality parameter of the cylinder foundation is less than 3 per thousand by the adjusted cylinder foundation, the height parameter of each sleeve 2, and the difference value between the maximum height parameter and the minimum height parameter is 5-10 mm.
d, installing the jacket 7; the jacket 7 is vertically lifted by using GPS positioning on a crane ship, is slowly lowered in alignment with a steel cylinder sleeve and is commanded by a diver to submerge underwater, the jacket legs 74 are all placed in a gap between the guide reinforcing rib 22 and the outer wall 21 of the cylinder foundation, and the installation at a preset position is finished.
After the horizontal tolerance is adjusted, the temporary fixing device 3 is respectively fixed among the conduit frame legs 74, the guide reinforcing ribs 22 and the outer wall 21 by adopting underwater welding; after the fixing is finished, sealing and fixing mortar is filled in the gap between the conduit frame leg 74 and the outer wall 21; the sealing and fixing mortar can flow into the gap between the conduit frame leg 74 and the guide reinforcing rib 22 through the mortar overflow hole 741, so that the inner side and the outer side of the conduit frame leg 74 are effectively sealed and fixed through the sealing and fixing mortar; and (4) after grouting, reserving the test block for curing under the same condition, and performing subsequent construction after the strength of the test block reaches 100 percent, namely the sealing and fixing mortar is well solidified.
Compared with the prior art, the invention has the following beneficial effects:
(1) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the steel pipe pile foundation needs a pile driving ship, and the cylinder only needs a crane ship, so that ship equipment is reduced, and the cost of ship equipment is saved;
(2) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the multi-pile repeated vibration and sinking is reduced to the cylinder primary vibration and sinking, so that the construction procedures are reduced, and the construction efficiency is improved;
(3) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the jacket cylinder foundation leveling has certain advantages, the verticality can be adjusted for leveling in the process of vibrating and sinking the cylinder through multi-hammer linkage of the vibration hammer, and convenience and rapidness are realized;
(4) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the accurate positioning of the base plane of the jacket cylinder has certain advantages, only one time of accurate positioning is needed, and the relative positions of the sleeves around the cylinder are fixed, so that the construction accuracy is improved;
(5) compared with a jacket steel pipe pile foundation, the jacket cylindrical foundation comprises the following components: the top surface of the jacket cylinder foundation is more convenient to be used as a simple construction platform, and the safety factor of offshore operation is improved.
Although the embodiments have been described, once the basic inventive concept is obtained, other variations and modifications of these embodiments can be made by those skilled in the art, so that these embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes that can be used in the present specification and drawings, or used directly or indirectly in other related fields are encompassed by the present invention.
Claims (4)
1. The leveling-free cylinder foundation for offshore wind power jacket construction comprises an offshore wind power construction jacket (7) horizontally arranged on a surface of a sea bed, and a cylinder foundation for fixing the offshore wind power construction jacket (7); the method is characterized in that:
the jacket (7) comprises a square platform (71) positioned at the top; a vertical round pipe (75) for mounting a wind driven generator pile is fixed at the upper part of the square platform (71); four supporting legs (72) which are outwards supported are arranged at the bottom of the square platform (71), and adjacent supporting legs (72) are fixedly connected through crossed reinforcing supporting rods (73); the bottom of the supporting leg (72) is provided with a vertically fixed conduit frame leg (74);
the cylinder foundation comprises a cylinder body (1) and a sleeve (2); the sleeve (2) comprises an outer wall (21) positioned at the outer side and a guide reinforcing rib (22) positioned at the inner side; the sleeve is sealed by a bottom plate (23) to form an integral structure; the sleeves (2) are provided with three groups or four groups and arranged in a regular triangle or square shape, and the adjacent sleeves (2) are fixedly connected with the complete set of barrel groups through the reinforcing support rods (3); the sleeve group is fixed on the upper part of the cylinder body (1) through an A type or a B type;
in the A type, arc-shaped cylinders (4) are symmetrically fixed on the upper side and the lower side of a sleeve (2), and rib plates (5) are welded between the sleeve (2) and the cylinders (4);
in the B type, a shear key (6) is arranged on the outer side of the sleeve (2), the outer side of the shear key (6) is connected to the inner side of the circular cylinder (4) in a welding mode, and the inner side of the shear key (6) is connected to the outer side of the sleeve (2) in a welding mode;
the conduit frame legs of the conduit frame correspondingly extend into the gaps of the sleeve (2) respectively; sealing and fixing mortar is filled in a gap between the conduit frame leg (74) and the sleeve (2);
the installation method of the leveling-free cylinder foundation for offshore wind power jacket construction is characterized by comprising the following steps:
(a) assembling and installing a cylinder foundation;
for type A, firstly, the center position of the outer wall (21) and the center position of the bottom plate (23) are overlapped and welded, and the contact position of the guide reinforcing rib (22) and the bottom plate (23) is welded; the sleeves (2) are arranged into a triangle or a square, and the reinforcing support rods (1) are welded between the adjacent sleeves (2) to form an integrally closed triangle component or square component; the circular arc-shaped cylinders (4) are respectively welded on two sides of the sleeve (2), and are welded with each other pairwise to form a closed circular ring; the sleeve (2) and the cylinder (4) are welded with rib plates (5); completing the A-type combined installation;
for the B type, firstly, the central position of the outer wall (21) and the central position of the bottom plate (23) are overlapped and welded; the contact position of the guide reinforcing rib (22) and the bottom plate (23) is welded; the sleeve (2) is arranged to be triangular or square, and the shear key (6) is kept to be vertical to the outside; the reinforcing support rods (1) are welded between the adjacent sleeves (2) to form an integrally closed triangular assembly or square assembly;
respectively welding the circular cylinders (4) to the shear keys (6) of the sleeve (2) to integrally form a closed circular ring; completing B-type combined installation;
after the A type or the B type is assembled and installed, carrying out ultrasonic flaw detection on each welding line formed by butt welding; after the ultrasonic flaw detection is correct, carrying out paint spraying operation on the A type or the B type; after the paint spraying operation is finished, placing the paint in a ventilation environment and airing for later use;
the paint spraying operation adopts water-based antirust paint which comprises the following components: 20-29 parts of acrylic resin, 11-18 parts of chlorinated rubber, 4-9 parts of aluminum tripolyphosphate, 7-18 parts of modified nano montmorillonite powder, 31-43 parts of silicon oxide spherical particles, 12-25 parts of maleic anhydride, 10-19 parts of water-based high-gloss varnish, 15-25 parts of linoleic acid, 19-22 parts of a flatting agent and 5-7 parts of a defoaming agent;
(b) transporting the cylinder foundation in the step (a) to a construction sea area through a barge, and preventing the cylinder foundation from deforming or dropping paint during the transportation process; determining the specific address of the cylinder foundation to be installed through a GPS positioning system of the crane ship and the barge, and anchoring the crane ship and the barge to the position; the crane ship and the hydraulic vibration hammer are linked in a multi-hammer mode, a rotating shaft of each vibration hammer is connected, synchronization of the speed and the phase of each vibration hammer is forcibly achieved, and a primary vibration sinking cylinder foundation is in place; controlling the verticality of the cylinder foundation to be less than 3 per mill in the vibration and sedimentation process;
(c) leveling the cylinder foundation primarily vibrated and sunk in place horizontally; respectively arranging a verticality detector and a height detector at the top of the sleeve (2), adjusting the verticality parameter and the height parameter detected by the verticality detector and the height detector by using a hydraulic vibration hammer, ensuring that the whole verticality parameter of the cylinder foundation is less than 3 per thousand on the adjusted cylinder foundation, and ensuring that the difference value of the height parameter, the maximum height parameter and the minimum height parameter of each sleeve (2) is between 5 and 10 mm;
(d) installing the jacket (7); GPS positioning is carried out on a crane ship, a jacket (7) is vertically lifted, the jacket is slowly lowered in alignment with a steel cylinder sleeve, a diver dives underwater to conduct command, all jacket legs (74) are placed in a gap between a guide reinforcing rib (22) and an outer wall (21) of a cylinder foundation, and the installation at a preset position is completed;
after the jacket is installed, sealing and fixing mortar is filled in gaps between the jacket legs (74) and the outer wall (21); sealing and fixing mortar can flow into a gap between the conduit frame leg (74) and the guide reinforcing rib (22) through the mortar overflow hole (741), so that the inner side and the outer side of the conduit frame leg (74) are effectively sealed and fixed through the sealing and fixing mortar; and (4) after grouting, reserving a test block for curing under the same condition, and performing subsequent construction after sealing and fixing mortar is well solidified.
2. The leveling-free cylinder foundation for offshore wind power jacket construction according to claim 1, wherein the sleeves and the cylinder body are integrally processed and manufactured, the relative elevations of three or four sleeves are controlled to be consistent, and during cylinder vibration sinking construction, the leveling-free installation of the jacket and the checking requirement of the horizontal tolerance of the jacket once installation are met by controlling the verticality of the cylinders and controlling the horizontal tolerance of the sleeves.
3. Leveling-free cylindrical foundation for offshore wind power jacket construction according to claim 1, characterized in that the outer wall (21) of the sleeve (2) is in the shape of a horn with a wide top and a narrow bottom; the chamfer angle of the upper end of the guide reinforcing rib is consistent with the bell mouth chamfer angle of the outer wall of the sleeve.
4. Leveling-free cylindrical foundation for offshore wind power jacket construction according to claim 1, characterized in that the jacket legs (74) are provided with symmetrically distributed grout holes (741) on respective sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710699399.0A CN107386313B (en) | 2017-08-16 | 2017-08-16 | Leveling-free cylinder foundation for offshore wind power jacket construction and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710699399.0A CN107386313B (en) | 2017-08-16 | 2017-08-16 | Leveling-free cylinder foundation for offshore wind power jacket construction and installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107386313A CN107386313A (en) | 2017-11-24 |
| CN107386313B true CN107386313B (en) | 2020-02-11 |
Family
ID=60352469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710699399.0A Active CN107386313B (en) | 2017-08-16 | 2017-08-16 | Leveling-free cylinder foundation for offshore wind power jacket construction and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107386313B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201506979U (en) * | 2009-09-14 | 2010-06-16 | 中国水利水电科学研究院 | Grouting connection structure for pile foundation and jacket leg of offshore wind turbine |
| CN103469808A (en) * | 2013-09-24 | 2013-12-25 | 广东明阳风电产业集团有限公司 | Offshore wind turbine foundation integrating concrete caisson and jacket |
| CN104612177A (en) * | 2015-02-02 | 2015-05-13 | 广州华申建设工程管理有限公司 | Inserted type steel cylinder and steel truss combined foundation and construction method thereof |
-
2017
- 2017-08-16 CN CN201710699399.0A patent/CN107386313B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201506979U (en) * | 2009-09-14 | 2010-06-16 | 中国水利水电科学研究院 | Grouting connection structure for pile foundation and jacket leg of offshore wind turbine |
| CN103469808A (en) * | 2013-09-24 | 2013-12-25 | 广东明阳风电产业集团有限公司 | Offshore wind turbine foundation integrating concrete caisson and jacket |
| CN104612177A (en) * | 2015-02-02 | 2015-05-13 | 广州华申建设工程管理有限公司 | Inserted type steel cylinder and steel truss combined foundation and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107386313A (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021012860A1 (en) | Pile-bucket composite truss type offshore wind turbine foundation and construction process thereof | |
| Guo et al. | Review of integrated installation technologies for offshore wind turbines: Current progress and future development trends | |
| CN109838351B (en) | Floating type automatic wind-to-water wind power generation equipment with multiple wind power generators | |
| CN107542101B (en) | Construction method of offshore four-buoy-buoyancy tank combined foundation structure | |
| CN108643221B (en) | Offshore wind power assembled bearing platform foundation and construction method thereof | |
| CN205152976U (en) | Marine precast concrete cushion cap wind turbine foundation | |
| EP2837554A1 (en) | Partially floating marine platform for offshore wind-power, bridges and marine buildings, and construction method | |
| CN205653814U (en) | Marine wind finding radar foundation structure of caisson type | |
| KR20110030628A (en) | Support structure for use in the offshore wind farm industry | |
| CN103938644A (en) | Prefabricated concrete bearing platform with reserved pile nest holes and fabricated multi-pile foundation installation method based on prefabricated concrete bearing platform with reserved pile nest holes | |
| CN103912007A (en) | Prefabricated concrete cushion cap preserved with foundation ring hole and pile recess ring hole and mounting method of assembly type multi-pile foundation based on cushion cap | |
| WO2022127466A1 (en) | Novel offshore wind turbine foundation suitable for shallow covering layer and construction method therefor | |
| CN102296629B (en) | Tower-drum structure suitable for ocean engineering and installation method thereof | |
| CN106930291B (en) | Marine multi-pile limiting frame and construction method thereof | |
| CN111101535A (en) | Offshore wind power multi-pile-suction bucket-jacket foundation structure and construction method thereof | |
| CN113846665B (en) | Combined type offshore wind turbine foundation suitable for deepwater conditions and installation method thereof | |
| KR20140051531A (en) | Structure of offshore structure, manufacturing and constructing method thereof | |
| NL2028088B1 (en) | Concrete connector body for an offshore wind turbine. | |
| CN106049520A (en) | Method for combining concrete base of offshore supporting structure and steel pipe pile | |
| CN210562255U (en) | Offshore wind power cylinder type foundation underwater construction structure | |
| CN107386313B (en) | Leveling-free cylinder foundation for offshore wind power jacket construction and installation method | |
| CN103981894A (en) | Multi-cylindrical foundation combined foundation structure system | |
| CN103938645A (en) | Prefabricated concrete bearing platform with reserved foundation ring hole and reserved pile nest holes and fabricated multi-pile foundation installation method based on prefabricated concrete bearing platform with reserved foundation ring hole and reserved pile nest holes | |
| CN217870596U (en) | Tensioning type fan foundation anchored on foundation seabed | |
| CN215109287U (en) | Pontoon suitable for multi-pile foundation and floating fan combined structure system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |