CN114150694B - Offshore wind power multi-cylinder annular occlusion foundation structure - Google Patents
Offshore wind power multi-cylinder annular occlusion foundation structure Download PDFInfo
- Publication number
- CN114150694B CN114150694B CN202111461234.2A CN202111461234A CN114150694B CN 114150694 B CN114150694 B CN 114150694B CN 202111461234 A CN202111461234 A CN 202111461234A CN 114150694 B CN114150694 B CN 114150694B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- foundation
- annular
- jacket
- 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
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
-
- 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
- E02D27/44—Foundations for machines, engines or ordnance
-
- 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
- E02D27/52—Submerged foundations, i.e. submerged in open water
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)
- Wind Motors (AREA)
Abstract
The invention discloses an offshore wind power multi-cylinder annular occlusion foundation structure, which comprises a jacket and a cylinder foundation, wherein the jacket is arranged on the jacket; the lower part of the jacket is inserted into the cylindrical foundation from top to bottom and welded with the top of the cylindrical foundation; the cylindrical foundation is a hollow semi-closed structure with a downward opening; the cylindrical foundation comprises at least three annular meshing single cylinders which are distributed in a surrounding manner and are connected in sequence; the middle position of the cylinder foundation is a structure which is vertically penetrated up and down; wherein, the center points of any two adjacent annular meshing single cylinders are sequentially connected by a straight line to form a regular polygon; for a jacket, it comprises: at least two layers of trusses which are distributed from top to bottom in sequence and are connected with each other; the invention uses the cylindrical foundation and the jacket as basic requirements, can meet the requirements of floating stability of the wind power foundation and safe sinking of the foundation in the marine complex environment, and ensures a more reasonable load transmission system and more economic manufacturing cost on the basis of maintaining the advantages of the integral floating and rapid construction.
Description
Technical Field
The invention relates to the technical field of offshore wind power foundation structures in wind energy engineering, in particular to an offshore wind power multi-cylinder annular occlusion foundation structure.
Background
Wind energy resources are pollution-free renewable energy sources, and compared with onshore wind power, offshore wind power has the advantages of high energy benefit, good power generation efficiency, small influence of terrains, no occupation of land resources and the like.
The main forms of the current offshore wind power foundation are as follows: single pile foundation, gravity foundation, suction barrel foundation, jacket foundation, etc. Along with the development of offshore wind power towards deep open sea, the adaptability of the traditional foundation to the deep open sea area is reduced, the requirements of floating stability of the wind power foundation and safe foundation settlement in a marine complex environment cannot be met, and meanwhile, the traditional foundation also has the problems of increased transportation cost, high manufacturing cost, long construction period and the like.
Disclosure of Invention
The invention aims at providing a multi-cylinder annular meshing foundation structure for offshore wind power, aiming at the technical defects existing in the prior art.
The invention provides an offshore wind power multi-barrel annular occlusion foundation structure, which comprises a jacket and a barrel foundation;
the lower part of the jacket is inserted into the cylindrical foundation from top to bottom and is welded with the top of the cylindrical foundation;
the top of the jacket is used for installing equipment of a preset type;
for a cylindrical foundation, it is a hollow semi-closed structure with a downward opening;
the cylindrical foundation comprises at least three annular meshing single cylinders which are distributed in a surrounding manner and are connected in sequence;
the middle position of the cylinder foundation is a structure which is vertically penetrated up and down;
each annular meshing single cylinder is of a hollow semi-closed structure with a downward opening;
for a plurality of annular meshing single cylinders, the center points of any two adjacent annular meshing single cylinders are sequentially connected by a straight line to form a regular polygon;
any two adjacent annular meshed single cylinders are connected through a dividing plate;
the top of each annular meshing single cylinder is provided with a cylinder top cover in a covering manner;
the top of the cylinder top cover is welded with a plurality of rib beams which are mutually spaced and are crossed together;
each rib beam is radially distributed;
each annular meshing single cylinder comprises an outer cylinder skirt plate and an inner cylinder skirt plate;
the outer cylinder skirt board and the inner cylinder skirt board are circular arc steel plates with the same center and radius;
the outer cylinder skirt plates are arranged at intervals in the outer direction of the inner cylinder skirt plates;
the outer cylinder skirt plate and the inner cylinder skirt plate are distributed relatively;
the two ends of the outer cylinder skirt plate and the inner cylinder skirt plate are respectively connected through a dividing plate;
the tops of the outer cylinder skirt plate, the inner cylinder skirt plate and the dividing plate are fixedly provided with the cylinder top cover;
for a jacket, it comprises: at least two layers of trusses which are distributed from top to bottom in sequence and are connected with each other;
each layer of truss comprises a plurality of vertical rods;
the number of the vertical rods is equal to that of the vertical annular meshed single cylinders;
the upright posts are rotationally symmetrically distributed;
a plurality of vertical rods gradually inclining from bottom to top towards the central line direction of the cylindrical foundation;
the lower parts of the opposite sides of any two adjacent upright posts are welded through a horizontal cross brace;
the upper end and the lower end of the opposite side of any two adjacent vertical rods are welded through two diagonal braces which are distributed in a crossing way.
Preferably, the outer skirt, inner skirt and the deck panel are the same height.
Preferably, the angle between the two sub-deck plates in each annular engagement single cylindern is the number of annular meshing single cylinders included in the cylinder type foundation.
Preferably, when the cylindrical foundation comprises six annular engagement single cylinders, connecting lines of any two adjacent annular engagement single cylinder center points form a regular hexagon;
when each layer of truss comprises six vertical rods, the connecting lines of the bottom center points of the six vertical rods form a regular hexagon.
Preferably, the plurality of rib beams are circumferentially distributed along the top of the annular snap single cylinder.
Each rib beam comprises a rectangular bottom surface, two right-angled triangle side surfaces which are consistent in shape and size and are parallel to each other, a rectangular inner side surface and a rectangular top surface;
the inner side surface of the rectangle is vertically intersected with the inner sides of the two right-angled triangle side surfaces and is close to the center of the top of the annular snap single cylinder;
wherein, the right triangle side is radial distribution at annular interlock monocular top.
Preferably, the length of the dividing plate is 15m, the width is 9m, and the thickness is 15mm;
the diameter of each annular meshing single cylinder is 18-20 m;
the thickness of the wall of each annular meshing single cylinder is 15 mm-25 mm;
the cylinder height of the annular meshing single cylinder is 15m.
Preferably, for the jacket, a ring-shaped engagement single tube of the tube-type foundation is inserted from top to bottom at the lower part of each upright of the truss at the lowest part, and welded with a plurality of rib beam crossing positions of the top of the tube top cover in the ring-shaped engagement single tube.
Compared with the prior art, the offshore wind power multi-cylinder annular occlusion foundation structure provided by the invention has the advantages that the structural design is scientific, the structural strength is high, the stability is good, the requirements of floating stability and safe foundation settlement of the wind power foundation in a marine complex environment can be met by taking the whole floating of the cylinder foundation and the jacket as basic requirements, the load transmission system is more reasonable on the basis of maintaining the advantages of the whole floating and quick construction, the manufacturing cost is more economic, and the offshore wind power multi-cylinder annular occlusion foundation structure has great practical significance.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of a multi-drum annular meshing foundation structure for offshore wind power provided by the invention;
FIG. 2 is a bottom view of a nacelle plate and a single-barrel foundation for engagement in a multi-barrel annular engagement foundation structure for offshore wind power provided by the invention;
FIG. 3 is a schematic diagram of an included angle between two sub-deck plates in an annular occlusion single cylinder in the offshore wind power multi-cylinder annular occlusion foundation structure provided by the invention;
in the figure, a jacket is shown at 1, a barrel foundation is shown at 2, a diagonal bracing is shown at 3, a transverse bracing is shown at 4, and a vertical rod is shown at 5;
the rib beam 6, the annular meshing single cylinder 7, the cylinder top cover 8 and the dividing plate 9.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 3, the invention provides an offshore wind power multi-barrel annular occlusion foundation structure, which comprises a jacket 1 and a barrel foundation 2;
the lower part of the jacket 1 is inserted into the cylindrical foundation 2 from top to bottom and welded with the top of the cylindrical foundation 2;
the top of the jacket 1 is used for installing equipment of a preset type.
The preset type of equipment may be, for example, a tower (e.g., a cylindrical tower), and a wind turbine is fixedly installed at the top of the tower.
In the present invention, in particular, for the cylindrical foundation 2, it is a hollow semi-closed structure with a downward opening;
the cylindrical foundation 2 comprises at least three annular engagement single cylinders 7 (namely, a plurality of sub-cylinders, not limited to six shown in fig. 1, but also more than or equal to three) which are circumferentially distributed and are sequentially connected;
the middle position of the cylinder foundation 2 is a structure which is vertically penetrated up and down (namely, the upper part and the lower part are completely opened);
each annular engagement single cylinder 7 is of a hollow semi-closed structure with a downward opening;
for a plurality of annular meshing single cylinders 7, the center points of any two adjacent annular meshing single cylinders 7 are sequentially connected by a straight line to form a regular polygon;
any two adjacent annular meshed single cylinders 7 (namely two sub cylinders) are connected through a sub-cabin plate 9;
the top of each annular meshing single cylinder 7 is provided with a cylinder top cover 8 in a covering manner;
a plurality of rib beams 6 which are mutually spaced and are crossed together are welded on the top of the cylinder top cover 8 (not limited to the five rib beams shown in fig. 1, one end of each rib beam 6 is commonly connected with one crossing point);
each rib beam 6 is radially distributed;
in particular, each annular snap-in single cylinder 7 comprises an outer cylinder skirt 71 and an inner cylinder skirt 72;
an outer cylinder skirt plate 71 and an inner cylinder skirt plate 72, which are circular arc steel plates with the same center and the same radius;
an outer tube skirt plate 71 provided at an interval in the outer direction of the inner tube skirt plate 72;
the outer skirt 71 and the inner skirt 72 are distributed relatively;
the two ends of the outer cylinder skirt plate 71 and the inner cylinder skirt plate 72 are respectively connected through a dividing plate 9;
the top of the outer skirt 71, inner skirt 72 and deck 9 is fixedly provided with said cap 8.
For the present invention, the two skirt plates (i.e., the outer skirt plate 71 and the inner skirt plate 72) in the annular engagement single cylinder 7 are two circular arc steel plates with the same center and the same radius;
the two cabin dividing plates 9 are two identical rectangular steel plates;
the heights of the outer cylinder skirt plate 71 and the inner cylinder skirt plate 72 are the same as those of the dividing plate 9;
it should be noted that, the two skirt plates (i.e., the outer skirt plate 71 and the inner skirt plate 72) are connected to the two dividing plates 9 at intervals, so as to form a symmetrical space structure; the top of the space structure is provided with a cylinder top cover 8 with the same section shape, and the cylinder top cover 8 is provided with a rib beam 6.
In particular, the included angle of two dividing plates 9 in each annular meshing single cylinder 7n is more than or equal to 3, and n is the number of annular engagement single cylinders 7 included in the cylinder foundation 2.
In particular, a plurality of annular meshing single cylinders 7 form an annular foundation structure together, and the dividing plates 9 at the connecting positions of the adjacent annular meshing single cylinders 7 are shared. The vertical rod 5 of the jacket 1 and the annular engagement single cylinder 7 are connected into a whole through the rib beam 6.
In particular, the rib beam 6 is made of steel.
In particular, a plurality of rib beams 6 (e.g., 5-10) are circumferentially distributed along the top of the annular snap monocular 7.
In particular, each rib beam 6 comprises a rectangular bottom surface, two right-angled triangle side surfaces which are consistent in shape and size and are parallel to each other, a rectangular inner side surface and a rectangular top surface;
the rectangular inner side surface is vertically intersected with the inner sides of the two right-angled triangle side surfaces and is close to the top center position of the annular snap single cylinder 7;
wherein, the right triangle side is radially distributed at the top of the annular meshing single cylinder 7.
In the concrete implementation, the side length of the bottom right angle side of the side face of the right angle triangle is 9m, and the side length of the right angle side in the vertical direction is 1m; the separation distance (i.e., the straight line distance) between the sides of the two right triangles is 0.5m.
The rib beam 6 mainly functions as a reinforcing rib, and is circumferentially distributed along the annular engagement single tube 7 and connected to the upright 5, so as to serve as a load transmission section between the upper jacket 1 and the tube foundation 2.
In particular, as shown in fig. 1, when the cylindrical foundation 2 includes six annular engagement single cylinders 7, any two adjacent annular engagement single cylinders 7 form a regular hexagon by connecting the central points of the annular engagement single cylinders.
In the concrete implementation, the length of the dividing plate 9 is 15m, the width is 9m, and the thickness is 15mm;
the diameter of each annular engagement monocular 7 may be 18m to 20m, for example 18m;
the thickness of the wall of each annular meshing single cylinder 7 can be 15 mm-25 mm. The cylinder height of the annular meshing single cylinder is 15m;
in particular, the volume requirement of the single annular occlusion single cylinder 7 is 10.77m 3 The weight is 110.72t. In the jacket 1: the length of the vertical rods 5 can be selected from 38m to 42m, the diameter range of the vertical rods 5 is 0.8m to 1.2m, and the number of the vertical rods 5 is equal to the number of the annular engagement monocylinder 7. The jacket 1 is flexibly selected in the case of being able to meet the stress criteria.
For the foundation structure formed by combining the annular meshing single cylinders 7 and the jacket 1, the bearing advantage of the cylinder foundation and the force transmission characteristic of the jacket structure are fully exerted, and the jacket 1 transmits the load on the upper part of the cylinder foundation to the top cover of the annular meshing single cylinder 7, so that the foundation structure is stressed reasonably.
In particular, the whole materials of the cylindrical foundation 2 and the jacket 1 are high-strength steel.
In the present invention, the inner part of the cylindrical foundation 2 may be divided into a plurality of compartments (for example, six compartments, that is, one compartment in each annular engagement single cylinder 7 as shown in fig. 1) by a plurality of compartment plates 9, and the cylindrical foundation may have a vertically penetrating structure in the middle.
For the present invention, the tubular foundation 2 can be floatingly and sinkably installed by inflating and evacuating a plurality of tanks (for example, six tanks).
In the present invention, the top cover 8 is provided with a plurality of rib beams 6, and the rib beams 6 can transmit the upper load received by the jacket 1 to the barrel foundation 2, thereby securing the entire transmission performance.
In the present invention, in particular, for the jacket 1, it includes: at least two layers of trusses 10 which are distributed from top to bottom in sequence and are connected with each other;
each truss 10 includes a plurality of vertical rods 5 (not limited to six shown in fig. 1, but may be any plurality of three or more);
the number of the vertical rods 5 is equal to that of the vertical annular engagement single cylinders 7;
the upright rods 5 are rotationally symmetrically distributed;
a plurality of vertical rods 5 gradually inclined from bottom to top (i.e., inclined to the inner side) toward the center line of the cylindrical foundation 2;
the lower parts of the opposite sides of any two adjacent upright posts 5 are welded through a horizontal cross brace 4;
the upper and lower ends of the opposite sides of any two adjacent vertical rods 5 are welded through two diagonal braces 3 which are distributed in a crossing way.
In the concrete implementation, two vertical rods 5 distributed up and down in any two adjacent layers of trusses 10 can be integrally formed and can be the same long vertical rod.
In the concrete implementation, the diagonal braces 3, the transverse braces 4 and the vertical rods 5 are all steel pipes;
in particular, for the jacket 1, the lower part of each upright 5 of the truss 10 positioned at the lowest part is respectively inserted into one annular meshing single cylinder 7 in the cylinder foundation 2 from top to bottom and is welded with the intersection position of a plurality of rib beams 6 at the top of a cylinder top cover 8 in the annular meshing single cylinder 7.
In the concrete implementation, for each truss layer, the connecting line of the bottom center points of the upright posts 5 forms a regular polygon. For example, referring to fig. 1, when each truss layer includes six uprights 5, the connection lines of the bottom center points of the six uprights 5 form a regular hexagon.
In the invention, the jacket 1 and the cylindrical foundation 2 comprising a plurality of (more than three) annular engagement monocylinders 7 form an integral offshore wind power foundation structure together;
in the concrete implementation, the diagonal braces 3 and the transverse braces 4 are space frame structures welded by oblique and transverse connection steel pipes, and are generally steel structures.
In the concrete implementation, the upright rods 5 are steel round tubes, generally large-diameter round tubes, and the number of the upright rods is any more than three, and the number of the upright rods is the same as that of the annular meshing single cylinders 7.
Based on the technical scheme, the structural system designed by the invention is not limited to the six-cylinder meshed suction cylinder foundation, and has applicability to multi-cylinder structures such as three cylinders, four cylinders and the like of offshore wind power. For the structure of the six-cylinder group suction cylinder foundation equipped with the jacket, the structure is replaced by a three-cylinder group engagement foundation equipped with the jacket, a four-cylinder group engagement foundation equipped with the jacket and a multi-cylinder group engagement foundation equipped with the jacket.
In order to more clearly understand the technical scheme of the present invention, the working principle of the present invention is described below.
The invention can fully exert the bearing advantage of the jacket structure, simultaneously combine the aging advantage of single offshore operation installation of the suction barrel foundation, and innovate the foundation structure and the installation method.
According to the invention, the annular occluding cylinder is combined with the foundation structure of the jacket, so that the whole floating transportation of the cylinder foundation and the jacket can be realized, the complex construction procedure of piling can be avoided in the sinking process of the wind turbine generator, and the foundation can be sunk in place through negative pressure sinking.
By applying the invention, the self-floating stability of the suction cylinder foundation can be fully exerted, and the floating stability of the suction cylinder foundation in a deep sea environment can be effectively improved. The offshore wind power multi-cylinder annular occlusion foundation structure provided by the invention uses a cylinder foundation and a jacket as basic requirements, replaces a large-diameter cylinder foundation structure by a multi-cylinder occlusion structure form, and ensures that a load transmission system is more reasonable and the manufacturing cost is more economical on the basis of keeping the advantages of integral floating and rapid construction.
The conventional large-diameter cylindrical foundation has been successfully used for offshore wind power and breakwater, but there is room for further optimization from the viewpoints of rationality, economy, applicability, etc. of force and force transmission. According to the technical scheme, the large-diameter single-barrel inner-cabin type foundation structure is optimized based on a force transmission mechanism of the deep water area jacket and combined with a bearing mode of a barrel type foundation. Meanwhile, in order to meet the requirements of floating stability of a wind turbine generator foundation and safe foundation settlement in a complex marine environment, the invention solves the problems of high manufacturing cost, long construction period and the like, and provides an offshore wind power multi-cylinder annular occlusion foundation structure which can be optimally stressed and economically achieved.
In order to further clearly understand the technical scheme of the invention, the specific working process of the invention is described below.
First, prefabricating and installing: the method comprises the steps of (1) pre-welding a jacket 1 and a cylindrical foundation 2 in a land factory, and welding the jacket 1 and the cylindrical foundation 2 into a whole to obtain an offshore wind power multi-cylindrical annular engagement foundation structure;
secondly, bank debugging: hanging the offshore wind power multi-cylinder annular engagement foundation structure into water, debugging the cylinder foundation 2 at the shore, checking the air tightness of the cylinder foundation 2, and carrying out draft adjustment on the cylinder foundation 2 according to towing requirements;
in particular, in order to check the air tightness of the cylindrical foundation 2, a pressure sensor may be disposed in the annular engagement single cylinder 7 so as to pay attention to the change in cabin pressure at all times, and if the cabin pressure is maintained substantially unchanged, the air tightness of the cylindrical foundation may be considered to be good.
In particular implementation, the means for draft adjustment of the tubular foundation 2: because the water-gas ratio is different under different draft conditions, the inner and outer liquid levels of the cylinder foundation are different, and then the annular occlusion single cylinder 7 is inflated and deflated to achieve corresponding adjustment of the inner and outer liquid levels of the cylinder foundation, so that draft adjustment of the cylinder foundation 2 is achieved.
Thirdly, air floatation transportation: the multiple annular occlusion single cylinders 7 included in the cylindrical foundation 2 in the offshore wind power multi-cylinder annular occlusion foundation structure are inflated, and the whole structure is transported to a designated operation sea area through floating and towing.
Fourth, sinking under negative pressure: and after the wind power multi-barrel annular occlusion foundation structure reaches the designated operation sea area, ballasting the top of the offshore wind power multi-barrel annular occlusion foundation structure to enable the barrel foundation 2 to sink, and then performing negative pressure pumping operation on the barrel foundation 2 to enable the barrel foundation 2 to continuously sink to the designated depth under the action of internal and external pressure differences.
Fifth step: and (3) installing a fan tower barrel: after the construction of the offshore wind power multi-barrel annular occlusion foundation structure is completed, the tower barrel hoisting operation is performed on the top of the jacket 1, and the wind power generation set installation operation is performed on the tower barrel.
In particular, the tower can be welded with the top of the jacket 1.
Compared with the prior art, the offshore wind power multi-cylinder annular occlusion foundation structure provided by the invention has the following beneficial effects:
1. compared with independent three-cylinder, four-cylinder and other foundations, the offshore wind power multi-cylinder annular occlusion foundation structure provided by the invention has the advantages that the stability is improved, the requirements of floating stability and foundation safe sinking under a marine complex environment are met, the problems of high manufacturing cost, long construction period and the like are overcome, the integrated construction of cylinder foundation installation can be realized, and the steel consumption of the foundation can be reduced.
2. The self-floating type suction barrel foundation air floating body structure has the advantages of self-floating stability and jacket foundation, and is strong in self-floating stability, capable of being prefabricated and installed, reasonable in stress and strong in adaptability to different water depths.
3. For the invention, the barrel-shaped foundation and the jacket are integrated, and the structural stability is enhanced.
4. For the floating transportation device, the floating transportation device has the advantages of low gravity center and good stability, can meet the requirements of wet towing of cylindrical foundations, is suitable for soft foundations such as silt soil, silt soil and the like, and has the advantages of large bearing area, capability of sinking under negative pressure, good in-place stability and the like;
5. compared with mutually independent multi-barrel foundations, the annular occlusion barrel type foundation structure adopted by the invention has the advantages of good integrity, large bearing capacity and high floating stability;
6. compared with a large-diameter single-cylinder foundation, the annular occlusion cylinder foundation adopted by the invention has the inherent advantages of lower manufacturing cost and economy, and is beneficial to high-efficiency, low-cost and large-scale development of wind power plants.
In summary, compared with the prior art, the offshore wind power multi-barrel annular engaging foundation structure provided by the invention has the advantages of scientific structural design, high structural strength and good stability, and can meet the requirements of floating stability and safe foundation sinking of a wind power foundation in a marine complex environment by taking the integral floating of a barrel foundation and a jacket as basic requirements, so that a load transmission system is more reasonable and the manufacturing cost is more economic on the basis of keeping the advantages of integral floating and rapid construction, and has great practical significance.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and variations could be made by those skilled in the art without departing from the principles of the present invention, and such modifications and variations should also be considered as being within the scope of the present invention.
Claims (5)
1. The offshore wind power multi-barrel annular occlusion foundation structure is characterized by comprising a jacket (1) and a barrel-shaped foundation (2);
the lower part of the jacket (1) is inserted into the cylindrical foundation (2) from top to bottom and is welded with the top of the cylindrical foundation (2);
the top of the jacket (1) is used for installing equipment of a preset type;
for a cylindrical foundation (2), it is a hollow semi-closed structure with a downward opening;
the cylindrical foundation (2) comprises at least three annular meshing single cylinders (7) which are distributed in a surrounding manner and are connected in sequence;
the middle position of the cylindrical foundation (2) is of a vertically up-down through structure;
each annular meshing single cylinder (7) is of a hollow semi-closed structure with a downward opening;
for a plurality of annular meshing single cylinders (7), the center points of any two adjacent annular meshing single cylinders (7) are sequentially connected by a straight line to form a regular polygon;
any two adjacent annular meshed single cylinders (7) are connected through a dividing plate (9);
the top of each annular meshing single cylinder (7) is provided with a cylinder top cover (8) in a covering manner;
the top of the cylinder top cover (8) is welded with a plurality of rib beams (6) which are mutually spaced and are crossed together;
one ends of the rib beams (6) are commonly connected to one intersection point;
each rib beam (6) is radially distributed;
each annular meshing single cylinder (7) comprises an outer cylinder skirt plate (71) and an inner cylinder skirt plate (72);
an outer cylinder skirt plate (71) and an inner cylinder skirt plate (72), which are concentric and radial arc steel plates;
an outer cylinder skirt plate (71) which is provided at intervals in the outer direction of the inner cylinder skirt plate (72);
the outer cylinder skirt plate (71) and the inner cylinder skirt plate (72) are distributed relatively;
the thickness of the outer skirt (71) is greater than the thickness of the inner skirt (72);
the two ends of the outer cylinder skirt plate (71) and the inner cylinder skirt plate (72) are respectively connected through a dividing plate (9);
the tops of the outer cylinder skirt plate (71), the inner cylinder skirt plate (72) and the dividing plate (9) are fixedly provided with the cylinder top cover (8);
for a jacket (1), it comprises: at least two layers of trusses (10) which are distributed from top to bottom in sequence and are connected with each other;
each layer of truss (10) comprises a plurality of vertical rods (5);
the number of the vertical rods (5) is equal to that of the vertical annular meshed single cylinders (7);
the upright rods (5) are rotationally symmetrically distributed;
a plurality of vertical rods (5) which gradually incline from bottom to top to the central line direction of the cylinder foundation (2);
the lower parts of the opposite sides of any two adjacent upright posts (5) are welded through a horizontal cross brace (4);
the upper end and the lower end of the opposite side of any two adjacent upright rods (5) are welded through two inclined struts (3) which are distributed in a crossing way;
the heights of the outer cylinder skirt plate (71) and the inner cylinder skirt plate (72) are the same as those of the dividing plate (9);
the outer cylinder skirt board (71) and the inner cylinder skirt board (72) are mutually connected with the two cabin dividing boards (9) at intervals to form a symmetrical space structure;
the included angle of two dividing plates (9) in each annular meshing single cylinder (7)n is the number of annular engagement single cylinders (7) included in the cylinder base (2).
2. Offshore wind power multi-cylinder annular engagement foundation structure according to claim 1, characterized in that when the cylinder foundation (2) comprises six annular engagement single cylinders (7), the connection of the central points of any two adjacent annular engagement single cylinders (7) forms a regular hexagon;
when each layer of truss comprises six vertical rods (5), the connecting lines of the bottom center points of the six vertical rods (5) form a regular hexagon.
3. Offshore wind power multi-cylinder annular occlusion foundation structure according to claim 1, characterized in that the plurality of rib beams (6) are distributed circumferentially along the top of the annular occlusion single cylinder (7);
each rib beam (6) comprises a rectangular bottom surface, two right-angled triangle side surfaces which are consistent in shape and size and are parallel to each other, a rectangular inner side surface and a rectangular top surface;
the inner side surface of the rectangle is vertically intersected with the inner sides of the two right triangle side surfaces and is close to the top center position of the annular meshing single cylinder (7);
wherein, the right triangle side surface is radially distributed at the top of the annular meshing single cylinder (7).
4. A marine wind power multi-drum annular snap-in foundation structure according to any of claims 1-3, characterized in that the nacelle plate (9) has a length of 15m, a width of 9m and a thickness of 15mm;
the diameter of each annular meshing single cylinder (7) is 18-20 m;
the thickness of the wall of each annular meshing single cylinder (7) is 15 mm-25 mm;
the cylinder height of the annular meshing single cylinder (7) is 15m.
5. A offshore wind power multi-cylinder annular engagement foundation structure according to any one of claims 1 to 3, characterized in that, for the jacket (1), one annular engagement single cylinder (7) in the cylindrical foundation (2) is inserted from top to bottom in the lower part of each upright (5) of the truss (10) located at the lowest, and is welded with the intersection position of a plurality of rib beams (6) on top of a cylinder top cover (8) in the annular engagement single cylinder (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461234.2A CN114150694B (en) | 2021-12-02 | 2021-12-02 | Offshore wind power multi-cylinder annular occlusion foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461234.2A CN114150694B (en) | 2021-12-02 | 2021-12-02 | Offshore wind power multi-cylinder annular occlusion foundation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114150694A CN114150694A (en) | 2022-03-08 |
| CN114150694B true CN114150694B (en) | 2023-09-26 |
Family
ID=80455881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111461234.2A Active CN114150694B (en) | 2021-12-02 | 2021-12-02 | Offshore wind power multi-cylinder annular occlusion foundation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114150694B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016084660A (en) * | 2014-10-28 | 2016-05-19 | 若築建設株式会社 | Foundation structure of off-shore wind turbine generator |
| CN107653895A (en) * | 2017-09-28 | 2018-02-02 | 天津大学 | Six floating drum buoyancy tank foundation structures and its construction method on a kind of combined type sea |
| CN110397064A (en) * | 2019-06-28 | 2019-11-01 | 天津大学 | A kind of separable ring cylinder jacket frame foundation structure and its construction method |
| CN111910674A (en) * | 2020-08-11 | 2020-11-10 | 天津大学 | Hexagonal offshore wind power barrel type foundation structure |
| CN113417311A (en) * | 2021-06-16 | 2021-09-21 | 张浦阳 | Offshore wind power multi-cylinder jacket foundation construction method |
| CN113529779A (en) * | 2021-08-02 | 2021-10-22 | 长江勘测规划设计研究有限责任公司 | Offshore wind power single-column variable-cross-section steel-concrete negative pressure cylinder foundation and construction method |
-
2021
- 2021-12-02 CN CN202111461234.2A patent/CN114150694B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016084660A (en) * | 2014-10-28 | 2016-05-19 | 若築建設株式会社 | Foundation structure of off-shore wind turbine generator |
| CN107653895A (en) * | 2017-09-28 | 2018-02-02 | 天津大学 | Six floating drum buoyancy tank foundation structures and its construction method on a kind of combined type sea |
| CN110397064A (en) * | 2019-06-28 | 2019-11-01 | 天津大学 | A kind of separable ring cylinder jacket frame foundation structure and its construction method |
| CN111910674A (en) * | 2020-08-11 | 2020-11-10 | 天津大学 | Hexagonal offshore wind power barrel type foundation structure |
| CN113417311A (en) * | 2021-06-16 | 2021-09-21 | 张浦阳 | Offshore wind power multi-cylinder jacket foundation construction method |
| CN113529779A (en) * | 2021-08-02 | 2021-10-22 | 长江勘测规划设计研究有限责任公司 | Offshore wind power single-column variable-cross-section steel-concrete negative pressure cylinder foundation and construction method |
Non-Patent Citations (1)
| Title |
|---|
| 练继建 ; 贺蔚 ; 吴慕丹 ; 王海军.《带分舱板海上风电筒型基础承载特性试验研究》.《岩土力学》.2016,15-21. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114150694A (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109026551B (en) | Novel floating type wind turbine foundation platform based on tuned liquid column oscillation damper | |
| CN110374820B (en) | Combined type ring cylinder buoyancy tank foundation structure and construction method thereof | |
| CN110453714B (en) | Offshore wind power jacket gravity type cylindrical foundation structure and construction method thereof | |
| CN113529779A (en) | Offshore wind power single-column variable-cross-section steel-concrete negative pressure cylinder foundation and construction method | |
| CN112127383A (en) | Offshore wind power foundation with separated bins in barrel top dense beam barrel and single-column negative pressure barrel | |
| CN113818476A (en) | Foundation component for offshore wind power generation and construction method thereof | |
| EP2463524B1 (en) | Marine wind turbine whole machine | |
| WO2023093148A1 (en) | Semi-submersible-type offshore floating platform having three columns | |
| CN112900472A (en) | High-strength grouting pipe joint jacket foundation for offshore wind power and construction method thereof | |
| CN111942533A (en) | Three-upright-column offshore wind power generation platform system | |
| CN203924100U (en) | A kind of four bucket foundation combined type foundation structure systems with support | |
| CN210621737U (en) | Combined type annular tube jacket foundation structure | |
| CN114150694B (en) | Offshore wind power multi-cylinder annular occlusion foundation structure | |
| CN215594101U (en) | Truss combined type steel-concrete cylindrical wind power foundation | |
| CN213038418U (en) | Novel all-steel cylindrical foundation structure for offshore wind power | |
| CN210343603U (en) | Modular ring section of thick bamboo flotation tank foundation structure | |
| CN210766848U (en) | Wind power foundation structure of multi-cylinder jacket | |
| CN214116682U (en) | Offshore wind power suction barrel-single pile combined foundation | |
| CN212951052U (en) | Three-upright-column offshore wind power generation platform system | |
| CN112127385A (en) | Self-supporting polygonal cylindrical foundation for offshore wind power | |
| CN112854292A (en) | Truss combined type steel-concrete cylindrical wind power foundation | |
| CN216475158U (en) | Inverted Y-shaped jacket cylindrical foundation structure suitable for deepwater sea area | |
| CN216041286U (en) | Offshore wind power single-column variable-section steel-concrete negative pressure cylinder foundation | |
| CN110453710B (en) | Combined multi-cylinder jacket foundation structure and construction method thereof | |
| CN214530754U (en) | Offshore wind power foundation with separated bins in barrel top dense beam barrel and single-column negative pressure barrel |
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 |