CN114875953A - Suction type pile-barrel composite foundation - Google Patents
Suction type pile-barrel composite foundation Download PDFInfo
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- CN114875953A CN114875953A CN202210662970.2A CN202210662970A CN114875953A CN 114875953 A CN114875953 A CN 114875953A CN 202210662970 A CN202210662970 A CN 202210662970A CN 114875953 A CN114875953 A CN 114875953A
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- 239000002131 composite material Substances 0.000 title claims abstract description 86
- 239000002689 soil Substances 0.000 claims abstract description 64
- 238000010276 construction Methods 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000006378 damage Effects 0.000 description 6
- 238000005086 pumping Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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- General Engineering & Computer Science (AREA)
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Abstract
The invention belongs to the technical field of offshore wind power engineering, and particularly relates to a suction type pile-barrel composite foundation which comprises a first pipe, a plurality of first rings and a cover plate, wherein one end of the first pipe is suitable for extending into a seabed, one end of the cover plate is connected with one end of the first pipe, which is far away from the seabed, the cover plate is suitable for sealing one end of the first pipe, which is far away from the seabed, the first rings are sleeved on the outer wall surface of the first pipe, the first rings are arranged at intervals in the length direction of the first pipe, and the first rings are suitable for disturbing soil around the first pipe. The suction type pile-barrel composite foundation can improve the disturbance efficiency on the soil body, enlarge the disturbance range on the soil body and improve the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of offshore wind power engineering, and particularly relates to a suction type pile-barrel composite foundation.
Background
In recent years, renewable clean energy is vigorously developed in China, and offshore wind energy resources are always the focus of much attention. The offshore wind power generation technology is the most important way for the development of offshore wind energy resources at present. At present, the conventional offshore wind turbine foundation is a single-pile foundation and a jacket foundation, but the suction bucket foundation is gradually popularized and used along with the expansion of the offshore wind power development range and the complication of environmental conditions. However, in the process of sinking and installing the suction barrel, soil bodies inside and outside the barrel generate resistance to the wall surface of the suction barrel, so that the suction barrel is prevented from sinking and installing, the sinking resistance of the suction barrel is large, and the construction efficiency is low.
Disclosure of Invention
The present invention is based on the discovery and recognition by the inventors of the following facts and problems:
the related art provides a suction type pile-barrel composite jacket foundation and an installation method thereof, soil at the bottom end of a suction barrel is disturbed by arranging a water outlet, but the defects of low disturbance efficiency, small disturbance range and the like exist.
The present invention is directed to solving, at least in part, one of the technical problems in the related art. Therefore, the embodiment of the invention provides a suction type pile-barrel composite foundation which can improve the disturbance efficiency on a soil body, enlarge the disturbance range on the soil body and improve the construction efficiency.
The suction type pile-barrel composite foundation of the embodiment of the invention comprises: a first pipe having one end adapted to extend into the seabed; the cover plate is suitable for sealing one end, away from the seabed, of the first pipe, and the first rings are arranged on the outer wall surface of the first pipe at intervals in the length direction of the first pipe and are suitable for disturbing soil bodies around the first pipe.
The suction type pile-barrel composite foundation provided by the embodiment of the invention can improve the disturbance efficiency on the soil body, increase the disturbance range on the soil body and improve the construction efficiency.
In some embodiments, the suction pile-bucket composite foundation further includes a plurality of second rings adapted to be connected to an inner wall surface of the first pipe, and the plurality of second rings are arranged at intervals in a length direction of the first pipe.
In some embodiments, the suction pile-bucket composite foundation further comprises a plurality of first plates, the first pipe is provided with a containing cavity, the first plates are arranged in the containing cavity, the first plates are arranged at intervals along the circumferential direction of the first pipe so as to divide the containing cavity into a plurality of sub-chambers, one ends of the first plates are connected with the inner wall surface of the first pipe, the other ends of the first plates are connected with each other, and one ends of the first plates, which are far away from the seabed, are connected with the cover plate.
In some embodiments, the suction pile-bucket composite foundation further comprises a second pipe, one end of the second pipe is accommodated in the accommodating cavity, one end of the second pipe extending into the accommodating cavity is connected with the cover plate, one end of the second pipe far away from the first pipe is suitable for extending into the seabed, and one end of the first plate far away from the inner wall surface of the first pipe is connected with the outer wall surface of the second pipe.
In some embodiments, the suction pile-bucket composite foundation further includes a plurality of third rings and a plurality of fourth rings, the third rings are sleeved on the outer wall surface of the second pipe, the third rings are arranged at intervals along the length direction of the second pipe, the fourth rings are connected with the inner wall surface of the second pipe, and the fourth rings are arranged at intervals along the length direction of the second pipe.
In some embodiments, the spacing between the plurality of first rings is A, and 3m is equal to or less than 4m, the size of the first rings in the wall thickness direction of the first pipe is B, and 20mm is equal to or less than B and equal to or less than 30mm, the spacing between the plurality of second rings is C, and 3m is equal to or less than C and equal to or less than 4m, the size of the second rings in the wall thickness direction of the first pipe is D, and 20mm is equal to or less than D and equal to or less than 30mm, and the cross-sections of the first rings and the second rings are circular, semicircular or triangular.
In some embodiments, the distance between the third rings is E, E is more than or equal to 3m and less than or equal to 4m, the size of the third rings in the wall thickness direction of the second pipe is F, F is more than or equal to 20mm and less than or equal to 30mm, the distance between the fourth rings is G, G is more than or equal to 3m and less than or equal to 4m, the size of the fourth rings in the wall thickness direction of the second pipe is H, H is more than or equal to 20mm and less than or equal to 30mm, and the cross sections of the third rings and the fourth rings are circular, semicircular or triangular.
In some embodiments, the coverplate comprises a first portion adapted to be connected to an end of the second pipe remote from the seabed, and a plurality of second portions connected end to end in sequence, with two adjacent first plates being connected to the second portions.
In some embodiments, the first portion has a first port and a first exhaust valve thereon, and the second portion has a second port and a second exhaust valve thereon.
The offshore wind turbine according to the embodiment of the present invention includes; a fan adapted to generate electrical energy from wind energy; a jacket adapted at one end to mount the fan; the composite foundation comprises a plurality of composite foundations, the plurality of composite foundations are arranged at intervals, the plurality of composite foundations are any one of the composite foundations, one end of each composite foundation extends into the seabed, and the other end of each conduit frame is suitable for being installed at one end, far away from the seabed, of each composite foundation.
The offshore wind turbine provided by the embodiment of the invention can improve the disturbance efficiency on the soil body, enlarge the disturbance range on the soil body and improve the construction efficiency.
Drawings
Fig. 1 is a schematic structural view of a suction pile-bucket composite foundation according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the first plate structure in fig. 1.
Fig. 3 is a top view of a suction pile-bucket composite foundation according to an embodiment of the present invention.
Fig. 4 is a schematic view of the structure of the first ring of fig. 1.
Reference numerals:
a guide frame 100, a suction type pile-barrel composite foundation 200,
the flow of the first tube 1, the second tube 2,
the cover plate 3, the first portion 31, the second portion 32,
a first ring 4, a second ring 5, a first plate 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The suction type pile-barrel composite foundation 200 comprises a first pipe 1, a cover plate 3 and a plurality of first rings 4, wherein one end of the first pipe 1 is suitable for extending into a seabed, one end of the cover plate 3 is connected with one end of the first pipe 1 far away from the seabed, the cover plate 3 is suitable for sealing one end of the first pipe 1 far away from the seabed, the first rings 4 are sleeved on the outer wall surface of the first pipe 1, the plurality of first rings 4 are arranged at intervals in the length direction of the first pipe 1, and the first rings 4 are suitable for disturbing soil around the first pipe 1.
Specifically, as shown in fig. 1, the first pipe 1 extends in the up-down direction, the first pipe 1 may be cylindrical, the lower end of the first pipe 1 is adapted to extend into the seabed, the lower end of the cover plate 3 is connected to the upper end of the first pipe 1 to seal the upper end of the first pipe 1, the plurality of first rings 4 are arranged on the outer circumferential surface of the first pipe 1 at intervals in the up-down direction, when the suction pile-bucket composite foundation 200 is installed, because the soil layer of the seabed has a certain viscosity, the soil on the outer circumferential surface of the first pipe 1 generates resistance to the first pipe 1, and the first rings 4 disturb and destroy the soil on the first pipe 1, thereby facilitating the sinking of the first pipe 1. The distance between the first rings 4 in the up-down direction can be adjusted by depending on the properties of seabed soil body, so as to be suitable for different applicable environments.
According to the suction type pile-barrel composite foundation 200 provided by the embodiment of the invention, the first ring 4 is arranged, and the first ring 4 is suitable for disturbing and destroying the soil around the outer wall surface of the first pipe 1, compared with the prior art that the seabed soil is disturbed by arranging the water outlet at the lower end of the pipe pile, the plurality of first rings 4 are arranged at intervals in the vertical direction, so that the disturbance range of the seabed soil is expanded, the phenomenon that the first pipe 1 descends due to the fact that the first rings 4 are arranged too densely when the first pipe 1 descends is avoided, the first pipe 1 sinks smoothly, and the construction efficiency of the suction type pile-barrel composite foundation 200 is improved.
In some embodiments, the suction pile-bucket composite foundation 200 further includes a plurality of second rings 5, the second rings 5 are adapted to be connected to the inner wall surface of the first pipe 1, and the second rings 5 are arranged at intervals in the length direction of the first pipe 1.
Specifically, as shown in fig. 1, the plurality of second rings 5 are arranged at intervals on the inner wall surface of the first pipe 1, and when the first pipe 1 is installed in a sinking manner, the second rings 5 are suitable for disturbing and destroying the seabed soil around the inner wall surface of the first pipe 1 so as to enable the first pipe 1 to be installed in a sinking manner, thereby avoiding the seabed soil from causing excessive resistance to the first pipe 1 when the first pipe 1 is installed in a sinking manner. The distance between the second rings 5 in the up-down direction can be adjusted by depending on the properties of seabed soil body, so as to be suitable for different applicable environments.
According to the suction type pile-barrel composite foundation 200 provided by the embodiment of the invention, the second rings 5 are arranged, the second rings 5 are suitable for disturbing and damaging seabed soil, the disturbance range of the seabed soil is expanded due to the fact that the plurality of second rings 5 are arranged at intervals in the vertical direction, and the plurality of second rings 5 are arranged at intervals in the vertical direction, so that the phenomenon that the second pipe 2 descends due to the fact that the second rings 5 are arranged too densely when the second pipe 2 descends is avoided, the second pipe 2 sinks smoothly, and the construction efficiency of the suction type pile-barrel composite foundation 200 is improved.
In some embodiments, the suction pile-bucket composite foundation 200 further includes a plurality of first plates 6, the first pipe 1 is provided with a containing cavity, the first plates 6 are arranged in the containing cavity, the plurality of first plates 6 are arranged at intervals along the circumferential direction of the first pipe 1 to divide the containing cavity into a plurality of sub-chambers, one end of each of the plurality of first plates 6 is connected to the inner wall surface of the first pipe 1, the other end of each of the plurality of first plates 6 is connected to each other, and the end of each of the plurality of first plates 6, which is far away from the seabed, is connected to the cover plate 3.
Specifically, as shown in fig. 1, the height direction of the first plates 6 extends up and down, the length direction of the first plates 6 extends along the radial direction of the first pipe 1, the plurality of first plates 6 are arranged at intervals along the circumferential direction of the first pipe 1 to divide the accommodating cavity into a plurality of sub-chambers, that is, one ends of the plurality of first plates 6 are connected with the inner wall surface of the first pipe 1, and the other ends of the plurality of first plates 6 are connected with each other to divide the accommodating cavity of the first pipe 1 into a plurality of sub-chambers, when the first pipe 1 is installed in a sunken mode, the plurality of sub-chambers can simultaneously extract water and soil, so that the first pipe 1 is prevented from inclining due to the fact that water and soil are pumped on one side of the accommodating cavity, or the level of the first pipe 1 is adjusted according to the difference of the speeds of extracting water and soil from the plurality of sub-chambers.
According to the suction type pile-barrel composite foundation 200, the accommodating cavity is divided into the plurality of sub-cavities by the plurality of first plates 6 and the plurality of first plates 6, so that water and soil can be conveniently pumped from the plurality of sub-cavities when the first pipe 1 sinks, the first pipe 1 is prevented from inclining due to the fact that water and soil are pumped from one side of the accommodating cavity, or the level of the first pipe 1 is adjusted through different speeds of pumping water and soil from the plurality of sub-cavities, and the installation efficiency and the stability of the suction type pile-barrel composite foundation 200 are improved.
In some embodiments, the suction pile-bucket composite foundation 200 further comprises a second pipe 2, one end of the second pipe 2 is accommodated in the cavity, one end of the second pipe 2 extending into the accommodating cavity is connected with the cover plate 3, one end of the second pipe 2 far away from the first pipe 1 is suitable for extending into the seabed, and one end of the first plate 6 far away from the inner wall surface of the first pipe 1 is connected with the outer wall surface of the second pipe 2.
Specifically, as shown in fig. 1, the second pipe 2 extends up and down, the second pipe 2 may be cylindrical, the radial dimension of the second pipe 2 is smaller than the radial dimension of the first pipe 1, one end of the plurality of first plates 6 is connected to the inner wall surface of the first pipe 1, the other end of the plurality of first plates 6 is connected to the outer wall surface of the second pipe 2, the upper end of the second pipe 2 is connected to the cover plate 3, the upper end of the first plates 6 is connected to the cover plate 3, the length of the second pipe 2 in the up-down direction is larger than the length of the first pipe 1 in the up-down direction, when the suction pile-bucket composite foundation 200 is installed, the lower end of the second pipe 2 is adapted to extend into the seabed soil body and sink down left and right under the gravity, when the lower end of the first pipe 1 contacts the seabed soil body, that is, when the inner and outer wall surfaces of the first pipe 1 contact the seabed soil body, negative pressure is pumped from the first pipe 1 and the second pipe 2, so that the suction type pile-bucket composite foundation 200 can sink uniformly.
Optionally, the rate of pumping water and mud from the sub-chambers of the first pipe 1 may also be adjusted to adjust the level of the suction pile-bucket composite foundation 200.
According to the suction type pile-barrel composite foundation 200 provided by the embodiment of the invention, the second pipe 2 is arranged, and the lower end of the second pipe 2 extends into a seabed soil body, so that the support stability and the installation efficiency of the suction type pile-barrel composite foundation 200 are improved.
In some embodiments, the suction pile-bucket composite foundation 200 further includes a plurality of third rings and a plurality of fourth rings, the third rings are sleeved on the outer wall surface of the second pipe 2, the third rings are arranged at intervals along the length direction of the second pipe 2, the fourth rings are connected to the inner wall surface of the second pipe 2, and the fourth rings are arranged at intervals along the length direction of the second pipe 2.
Specifically, the internal wall face of third ring links to each other with the outer wall face of second pipe 2, and the third ring is arranged on the outer wall face of second pipe 2 along upper and lower direction interval, and the third ring carries out disturbance and destruction to the seabed soil body when second pipe 2 installation sinks to do benefit to second pipe 2 and sink the installation, and a plurality of third rings are arranged with certain distance interval on the outer wall face of second pipe 2, avoid producing too big resistance when sinking to second pipe 2. The outer wall surface of the fourth ring is connected with the inner wall surface of the second pipe 2, the fourth ring is arranged on the inner wall surface of the second pipe 2 at intervals along the vertical direction, the fourth ring disturbs and destroys seabed soil bodies when the second pipe 2 is installed and sunk so as to be beneficial to the sinking installation of the second pipe 2, and the plurality of fourth rings are arranged on the inner wall surface of the second pipe 2 at intervals with a certain distance, so that overlarge resistance is prevented from being generated when the second pipe 2 sinks.
Optionally, the distance between the third rings in the vertical direction may be adjusted by the property of the seabed soil body to be suitable for different applicable environments, and the distance between the fourth rings in the vertical direction may be adjusted by the property of the seabed soil body to be suitable for different applicable environments.
According to the suction type pile-barrel composite foundation 200 provided by the embodiment of the invention, the plurality of third rings and the plurality of fourth rings are arranged on the outer wall surface of the second pipe 2 at intervals along the vertical direction, and the third rings disturb and damage the soil around the second pipe 2 when the second pipe 2 is installed in a sinking manner, so that the second pipe 2 is installed in a sinking manner smoothly. The fourth rings are arranged on the inner wall surface of the second pipe 2 at intervals in the vertical direction, and destroy the soil around the second pipe 2 when the second pipe 2 is installed in a sinking manner, so that the second pipe 2 is installed in a sinking manner smoothly, and the construction efficiency of the suction type pile-barrel composite foundation 200 is improved.
In some embodiments, the spacing between the plurality of first rings 4 is A, and 3 m.ltoreq.A.ltoreq.4 m, the dimension of the first rings 4 in the direction of the wall thickness of the first pipe 1 is B, and 20 mm.ltoreq.B.ltoreq.30 mm, the spacing between the plurality of second rings 5 is C, and 3 m.ltoreq.C.ltoreq.4 m, the dimension of the second rings 5 in the direction of the wall thickness of the first pipe 1 is D, and 20 mm. ltoreq.D.ltoreq.30 mm, the cross-sections of the first rings 4 and the second rings 5 are circular, semicircular, or triangular.
Specifically, as shown in FIG. 1, the plurality of first rings 4 have a pitch A in the up-down direction, and 3 m.ltoreq.A.ltoreq.4 m, for example, A may be 3m, 3.1m, 3.2m, 3.3m, 3.4m, 3.5m, 3.6m, 3.7m, 3.8m, 3.9m, 4.0 m. The disturbance damage to the soil around the outer wall surface of the first pipe 1 is guaranteed, the phenomenon that the resistance of the first pipe 1 during descending installation is too large due to too small distance is avoided, the phenomenon that the soil cannot be fully disturbed when the first pipe 1 sinks to be installed due to too large distance between a plurality of first rings 4 is avoided, and the installation efficiency of the first pipe 1 is improved. The distance between the first rings 4 in the up-down direction can be adjusted by depending on the properties of seabed soil body, so as to be suitable for different applicable environments.
Alternatively, the cross-section of the first ring 4 may be circular, semi-circular or triangular, for example, the cross-section of the first ring 4 may be circular to reduce the resistance of the first pipe 1 when it is installed sinking. Alternatively, the first ring 4 may be triangular in cross-section to improve the disturbance efficiency to the soil mass.
The size of the first ring 4 in the wall thickness direction of the first pipe 1 is B, B is more than or equal to 20mm and less than or equal to 30mm, and B can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm and 30 mm. Different applicable environments are adapted by the first rings 4 with different thicknesses while the structural strength of the first rings 4 is ensured.
The plurality of second rings 5 have a pitch C in the up-down direction, and 3m C.ltoreq.4 m, for example, C may be 3m, 3.1m, 3.2m, 3.3m, 3.4m, 3.5m, 3.6m, 3.7m, 3.8m, 3.9m, 4.0 m. The disturbance damage to the soil body around the inner wall surface of the first pipe 1 is guaranteed, the phenomenon that the resistance of the first pipe 1 during descending installation is too large due to too small distance is avoided, the phenomenon that the soil body cannot be fully disturbed when the first pipe 1 is submerged for installation due to too large distance among the second rings 5 is avoided, and the installation efficiency of the first pipe 1 is improved. The distance between the second rings 5 in the up-down direction can be adjusted by depending on the properties of seabed soil body, so as to be suitable for different applicable environments.
The dimension of the second ring 5 in the wall thickness direction of the first pipe 1 is D, D is more than or equal to 20mm and less than or equal to 30mm, and D can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm and 30 mm. The structural strength of the first ring 4 is ensured, and meanwhile, different applicable environments are adapted through the second rings 5 with different thicknesses.
Alternatively, the cross-section of the second ring 5 may be circular, semi-circular or triangular, for example, the cross-section of the second ring 5 may be circular to reduce the resistance of the first pipe 1 when it is installed sinking. Alternatively, the first ring 4 may be triangular in cross-section to improve the disturbance efficiency to the soil mass.
In some embodiments, the spacing between the third rings is E, and E is 3m or less and 4m or less, the dimension of the third rings in the wall thickness direction of the second pipe 2 is F, and F is 20mm or less and 30mm or less, the spacing between the fourth rings is G, and G is 3m or less and 4m or less, the dimension of the fourth rings in the wall thickness direction of the second pipe 2 is H, and H is 20mm or less and 30mm or less, and the cross-sections of the third rings and the fourth rings are circular, semicircular or triangular.
Specifically, as shown in FIG. 1, the third rings have a pitch E in the vertical direction, and E is 3 m.ltoreq.E.ltoreq.4 m, as shown in FIG. 1, and E may be, for example, 3m, 3.1m, 3.2m, 3.3m, 3.4m, 3.5m, 3.6m, 3.7m, 3.8m, 3.9m, 4.0 m. The disturbance damage to the soil body around the outer wall surface of the second pipe 2 is guaranteed, the phenomenon that the resistance of the second pipe 2 during descending installation is too large due to too small distance is avoided, the phenomenon that the soil body cannot be fully disturbed when the second pipe 2 is submerged for installation due to too large distance among a plurality of third rings is avoided, and the installation efficiency of the second pipe 2 is improved. The distance between the third rings in the vertical direction can be adjusted by depending on the properties of seabed soil bodies so as to be suitable for different applicable environments.
Alternatively, the third ring may be circular, semi-circular or triangular in cross-section, for example, the third ring may be circular in cross-section to reduce resistance to the second pipe 2 when installed in a sunken position, or triangular in cross-section to improve the efficiency of the disturbance of the earth.
The size of the third ring in the wall thickness direction of the second pipe 2 is F, F is more than or equal to 20mm and less than or equal to 30mm, and F can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm and 30 mm. The third ring with different thicknesses is suitable for different applicable environments while the strength of the third ring structure is ensured.
The distance between the plurality of fourth rings in the up-down direction is G, and 3m ≦ G ≦ 4m, for example, G may be 3m, 3.1m, 3.2m, 3.3m, 3.4m, 3.5m, 3.6m, 3.7m, 3.8m, 3.9m, 4.0 m. The disturbance damage to the soil body around the inner wall surface of the second pipe 2 is guaranteed, the phenomenon that the resistance of the second pipe 2 during descending installation is too large due to too small distance is avoided, the phenomenon that the soil body cannot be fully disturbed when the plurality of fourth rings are too large in distance during descending installation of the second pipe 2 is avoided, and the installation efficiency of the second pipe 2 is improved. The distance between the fourth rings in the up-down direction can be adjusted by depending on the properties of seabed soil bodies so as to be suitable for different applicable environments.
Alternatively, the cross-section of the fourth ring may be circular, semi-circular or triangular, for example, the cross-section of the fourth ring may be circular to reduce the resistance of the second pipe 2 to installation by sinking, or the cross-section of the fourth ring may be triangular to improve the efficiency of disturbance of the earth mass.
The size of the fourth ring in the wall thickness direction of the second pipe 2 is H, H is more than or equal to 20mm and less than or equal to 30mm, and H can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm and 30 mm. The fourth ring with different thicknesses is suitable for different applicable environments while the structural strength of the fourth ring is guaranteed.
In some embodiments, the cover plate 3 comprises a first portion 31 and a plurality of second portions 32, the first portion 31 being adapted to be connected to an end of the second pipe 2 remote from the seabed, the plurality of second portions 32 being connected end to end in sequence, and two adjacent first plates 6 being connected to the second portions 32.
Specifically, the cover plate 3 may be circular, the first portion 31 may be circular, the lower end of the first portion 31 is connected to the upper end of the second pipe 2 to seal the upper end of the second pipe 2, the second portions 32 are sequentially connected end to end, the upper ends of two adjacent first plates 6 of the first plates 6 are connected to the lower ends of the second portions 32 to seal the sub-chambers divided by the first plates 6, after the sinking of the suction type pile-barrel composite foundation 200 is completed, the lower end of the suction type pile-barrel composite foundation 200 is connected to a seabed soil body, the suction type pile-barrel composite foundation 200 is fixed to the seabed by pumping negative pressure on the suction type pile-barrel composite foundation 200, and the support stability of the suction type pile-barrel composite foundation 200 is improved.
In some embodiments, a first port and a first exhaust valve are provided on the first portion 31 and a second port and a second exhaust valve are provided on the second portion 32.
When the suction type pile-barrel composite foundation 200 sinks by means of gravity, the first exhaust valve is opened to discharge air and water in the second pipe 2 so as to facilitate smooth sinking installation of the second pipe 2, the second exhaust valve is opened to discharge air and water in the sub-chamber of the first pipe 1 so as to facilitate smooth sinking installation of the first pipe 1, when the lower end of the first pipe 1 contacts with the seabed soil layer and the first pipe 1 partially extends into the seabed soil layer, the first exhaust valve and the second exhaust valve are closed, the first port and the second port are opened to extract water and mud in the sub-chamber of the second pipe 2 and the first pipe 1, when the suction type pile-barrel composite foundation 200 sinks to a specified depth, negative pressure is formed in the first pipe 1 and the second pipe 2, and the first port and the second port are sealed. By arranging the first port, the first exhaust valve, the second port and the second exhaust valve, the construction efficiency of the suction type pile-barrel composite foundation 200 is improved, negative pressure is formed in the first pipe 1 and the second pipe 2, the connection between the suction type pile-barrel composite foundation 200 and a soil body is more stable, and the stability and the safety of the suction type pile-barrel composite foundation 200 are improved.
The offshore wind turbine of the embodiment of the invention comprises a wind turbine, a jacket 100 and a plurality of suction type pile-barrel composite foundations 200, wherein the wind turbine is suitable for generating electric energy by utilizing wind energy, one end of the jacket 100 is suitable for mounting the wind turbine, the number of the suction type pile-barrel composite foundations 200 is multiple, the plurality of suction type pile-barrel composite foundations 200 are arranged at intervals, the plurality of suction type pile-barrel composite foundations 200 are any one of the suction type pile-barrel composite foundations 200, one end of each suction type pile-barrel composite foundation 200 extends into a seabed, and the other end of the jacket 100 is suitable for being mounted at one end, far away from the seabed, of each suction type pile-barrel composite foundation 200.
Specifically, as shown in fig. 1, the number of the suction pile-bucket composite foundations 200 may be multiple, for example, the number of the suction pile-bucket composite foundations 200 is four, the upper ends of four suction pile-bucket composite foundations 200 are respectively connected to the lower end of the jacket 100, the upper end of the jacket 100 is adapted to be installed with a fan, the fan is adapted to generate electric energy by using wind energy, the lower end of the suction pile-bucket composite foundation 200 extends into a seabed soil body, optionally, the offshore wind turbine further includes a plurality of supporting members, one ends of the plurality of supporting members are connected to the jacket 100, and the other ends of the plurality of supporting members are connected to the upper ends of the plurality of second portions 32 in a one-to-one correspondence manner, so as to improve the connection stability between the suction pile-bucket composite foundations 200 and the jacket 100. The first ring 4, the second ring 5, the third ring and the fourth ring improve the construction efficiency of the suction pile-barrel composite foundation 200, and after the first ring 4, the second ring 5, the third ring and the fourth ring are installed in a sinking manner on the suction pile-barrel composite foundation 200, the soil on the surrounding seabed has certain fluidity, the soil flows to bury the suction pile-barrel composite foundation 200, and the first ring 4, the second ring 5, the third ring and the fourth ring can improve the stability and the safety of the suction pile-barrel composite foundation 200 in the vertical direction and the horizontal direction through friction or limitation with the surrounding soil when the suction pile-barrel composite foundation 200 is impacted in the vertical direction and the horizontal direction.
According to the offshore wind turbine provided by the embodiment of the invention, the installation efficiency and the stability of the offshore wind turbine are improved by arranging the suction type pile-barrel composite foundation 200 and arranging the first ring 4, the second ring 5, the third ring and the fourth ring on the suction type pile-barrel composite foundation 200.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A suction type pile-barrel composite foundation is characterized by comprising:
a first pipe having one end adapted to extend into the seabed;
a coverplate, one end of the coverplate being connected to an end of the first pipe remote from the seabed, the coverplate being adapted to seal the end of the first pipe remote from the seabed;
the first rings are sleeved on the outer wall surface of the first pipe and are arranged at intervals in the length direction of the first pipe, and the first rings are suitable for disturbing soil around the first pipe.
2. The suction pile-bucket composite foundation of claim 1, further comprising a plurality of second rings adapted to be connected to an inner wall surface of the first pipe, the plurality of second rings being arranged at intervals in a length direction of the first pipe.
3. The suction pile-bucket composite foundation of claim 2, further comprising a plurality of first plates, wherein the first pipe is provided with a containing cavity, the first plates are arranged in the containing cavity, the first plates are arranged at intervals along the circumferential direction of the first pipe to divide the containing cavity into a plurality of sub-chambers, one end of each first plate is connected with the inner wall surface of the first pipe, the other ends of the first plates are connected with each other, and one end of each first plate, which is far away from the seabed, is connected with the cover plate.
4. The suction pile-bucket composite foundation of claim 3, further comprising a second pipe, wherein one end of the second pipe is accommodated in the cavity, one end of the second pipe extending into the accommodating cavity is connected with the cover plate, one end of the second pipe far away from the first pipe is suitable for extending into the seabed, and one end of the first plate far away from the inner wall surface of the first pipe is connected with the outer wall surface of the second pipe.
5. The suction pile-bucket composite foundation of claim 4, further comprising a plurality of third rings and a plurality of fourth rings, wherein the third rings are sleeved on the outer wall surface of the second pipe, the third rings are arranged at intervals along the length direction of the second pipe, the fourth rings are connected with the inner wall surface of the second pipe, and the fourth rings are arranged at intervals along the length direction of the second pipe.
6. The suction pile-bucket composite foundation of any one of claims 2-5, wherein the spacing between the first rings is A, and 3m is equal to or less than A and equal to or less than 4m, the size of the first rings in the wall thickness direction of the first pipe is B, and 20mm is equal to or less than B and equal to or less than 30mm, the spacing between the second rings is C, and 3m is equal to or less than C and equal to or less than 4m, the size of the second rings in the wall thickness direction of the first pipe is D, and 20mm is equal to or less than D and equal to or less than 30mm, and the cross sections of the first rings and the second rings are circular, semicircular or triangular.
7. The suction type pile-bucket composite foundation of claim 5, wherein a distance between the third rings is E, and E is more than or equal to 3m and less than or equal to 4m, a dimension of the third rings in the wall thickness direction of the second pipe is F, and F is more than or equal to 20mm and less than or equal to 30mm, a distance between the fourth rings is G, and G is more than or equal to 3m and less than or equal to 4m, a dimension of the fourth rings in the wall thickness direction of the second pipe is H, and H is more than or equal to 20mm and less than or equal to 30mm, and cross sections of the third rings and the fourth rings are circular, semicircular or triangular.
8. The suction pile-bucket composite foundation of claim 4, wherein the cap plate includes a first portion adapted to be connected to an end of the second pipe remote from the seabed and a plurality of second portions connected end to end in sequence, and two adjacent first plates are connected to the second portions.
9. The suction pile-bucket composite foundation of claim 8, wherein the first portion has a first port and a first exhaust valve thereon, and the second portion has a second port and a second exhaust valve thereon.
10. An offshore wind turbine, comprising;
a wind turbine adapted to generate electrical energy from wind energy;
a jacket adapted at one end to mount the fan;
the composite foundation comprises a plurality of composite foundations, the plurality of composite foundations are arranged at intervals, the composite foundations are as in any one of claims 1 to 9, one end of each composite foundation extends into the seabed, and the other end of each conduit frame is suitable for being installed at one end, far away from the seabed, of each composite foundation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210662970.2A CN114875953A (en) | 2022-06-13 | 2022-06-13 | Suction type pile-barrel composite foundation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210662970.2A CN114875953A (en) | 2022-06-13 | 2022-06-13 | Suction type pile-barrel composite foundation |
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| CN202210662970.2A Pending CN114875953A (en) | 2022-06-13 | 2022-06-13 | Suction type pile-barrel composite foundation |
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Cited By (1)
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