CN213625671U - Offshore wind power pile and bucket composite foundation structure connected by adopting reverse balance flange structure - Google Patents
Offshore wind power pile and bucket composite foundation structure connected by adopting reverse balance flange structure Download PDFInfo
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- CN213625671U CN213625671U CN202021937402.1U CN202021937402U CN213625671U CN 213625671 U CN213625671 U CN 213625671U CN 202021937402 U CN202021937402 U CN 202021937402U CN 213625671 U CN213625671 U CN 213625671U
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Abstract
The utility model relates to an adopt marine wind-powered electricity generation stake bucket composite foundation structure of reverse balance flange structural connection. The utility model aims at providing an adopt marine wind-powered electricity generation stake bucket composite foundation structure of reverse balance flange structural connection to solve single pile foundation pile sinking and do not target in place, the super high problem in basis top. The technical scheme of the utility model is that: the marine platform comprises a single pile, a transition section steel pipe, an upper tower drum and a steel drum body, wherein the steel drum body is arranged on the surface of the marine platform, the single pile is vertically inserted into the drum body, and fine aggregate concrete is filled between the single pile and the steel drum body; the top of the transition section steel pipe is connected with the upper tower barrel through a flange, and the bottom of the transition section steel pipe is connected with the top of the single pile through a reverse balance flange; the reverse balance flange is provided with an upper structure connected with the transition section steel pipe, a lower structure connected with the single pile, and a high-strength bolt assembly used for connecting the upper structure and the lower structure and applying pretightening force. The utility model is suitable for an ocean engineering technical field.
Description
Technical Field
The utility model relates to an adopt marine wind power stake bucket composite foundation structure of reverse balance flange structural connection is applicable to the marine wind power field engineering construction under the complicated rock matter condition to and other seabed stratum hardness or pile sinking difficulties lead to the pile foundation shallow marine wind power field project that buries, belong to ocean engineering technical field.
Background
Offshore wind power does not occupy onshore resources, wind resources are stable, power generation efficiency is high, the offshore wind power is clean energy with the most large-scale development potential, and the development of offshore wind power has important significance for promoting energy structure optimization transformation. The single-pile foundation is a structural type which is generally considered to be preferred to be applied in the offshore wind power industry due to the advantages of simple structure, definite stress, fewer nodes and the like. The wind resources in the sea areas such as Fujian, Liaoning, Shandong, Guangdong and the like in China are rich, however, the geological conditions of the sea areas are complex, the surface fluctuation of the seabed bedrock of part of the sea areas is large, and the soft soil covering layer is shallow. In order to meet the requirement of structural safety, the large-diameter single-pile foundation needs to be embedded into a rock mass to a certain depth, so that the on-site rock-socketing construction workload and difficulty are high, the period is long, the risk is high, and the like, and the large-diameter single pile faces a series of construction risks such as pile stabilization, leveling, hole collapse, pile slipping, overstriking or underdriving and the like in the rock-socketing construction.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the problems existing in the prior art, the offshore wind power pile and bucket composite foundation structure adopting the reverse balance flange structure for connection is provided, so that the problems that a single-pile foundation pile sinking is not in place and the foundation top is ultrahigh are solved.
The utility model adopts the technical proposal that: the utility model provides an adopt marine wind-powered electricity generation stake bucket composite foundation structure of reverse balance flange structural connection which characterized in that: the offshore marine platform comprises a single pile, a transition section steel pipe, an upper tower drum and a steel drum body, wherein the steel drum body is arranged on the surface of the marine platform, the single pile is vertically inserted into the drum body, and fine aggregate concrete is filled between the single pile and the steel drum body; the top of the transition section steel pipe is connected with the upper tower barrel through a flange, and the bottom of the transition section steel pipe is connected with the top of the single pile through a reverse balance flange;
the reverse balance flange is provided with an upper structure connected with the transition section steel pipe, a lower structure connected with the single pile, and a high-strength bolt assembly used for connecting the upper structure and the lower structure and applying pretightening force.
The upper structure of the reverse balance flange is provided with an annular upper flange plate and a plurality of upper rib plates, the outer side surface of the upper flange plate is welded with the inner side wall of the transition section steel pipe, and the upper rib plates are uniformly arranged on the inner side wall of the transition section steel pipe at intervals in an annular mode and are welded with the inner side wall of the transition section steel pipe and the bottom of the upper flange plate;
the lower structure of the reverse balance flange is provided with an annular lower flange plate and a plurality of lower rib plates, the outer side surface of the lower flange plate is connected with the inner side wall of the single pile in a welding mode, and the lower rib plates are uniformly arranged on the inner side wall of the single pile in an annular mode at intervals and are connected with the inner side wall of the single pile and the lower flange plate in a welding mode;
the upper ribbed plates and the lower ribbed plates are in butt joint one by one to form a group of balance surfaces.
And the upper flange plate and the lower flange plate are provided with bolt holes for connecting the high-strength bolt assembly.
The top of the steel barrel body is flush with the surface of the sea bed.
The utility model has the advantages that:
1. the utility model discloses a set up the steel staving of big horizontal rigidity at the pile body and improved single pile basis level bearing capacity, satisfying under the prerequisite of structure safety, reduced pile foundation size, weight and pile body and gone into rock degree of depth etc. reduce and have avoidd pile foundation embedded rock work load even.
2. The utility model discloses utilize the characteristics of major diameter single pile and steel staving installation in coordination, accomplish marine construction fast, when optimizing construction process, solved a series of construction risks such as steady stake, leveling, hole collapse, swift current stake in the construction of major diameter single pile rock-socketed to and the overburden of rock base seabed is shallow, the geological problems such as stratum distribution inequality and the rock-socketed construction degree of difficulty is big, cycle length, a series of engineering problems such as risk height.
3. The utility model discloses the changeover portion steel pipe on upper portion passes through the reverse balance flange joint with the single pile of lower part to adopt high strength bolt to apply the pretightning force and connect into whole, apply the pretightning force through the high strength bolt to the reverse balance flange, can realize that atress in-process coupling part is in the compression state all the time, improved the bending resistance bearing capacity of reverse balance flange.
4. The utility model discloses in, the single pile is if appear surpassing to beat, owe to beat or the single pile shaft straightness that hangs down is great when, and accessible upper portion changeover portion steel pipe is corresponding to be adjusted to ensure that basic ceiling height satisfies the designing requirement.
Drawings
Fig. 1 is a schematic structural diagram of the present embodiment.
Fig. 2 is an elevation view of the counter balance flange structure of the present embodiment.
Fig. 3 is a plan view of the counter balance flange structure in this embodiment.
Detailed Description
As shown in fig. 1, the offshore wind power pile-barrel composite foundation structure connected by the reverse balance flange structure in this embodiment has a single pile 1, a transition section steel pipe 2, an upper tower 6 and a steel barrel 4. The top of the transition section steel pipe 2 is connected with the upper tower 6 through a flange, a steel barrel body 4 is arranged on the surface of the sea bed, and the top of the barrel body is flush with the surface of the sea bed; the bottom of the single pile 1 vertically penetrates through the middle part of the barrel body and is driven into a seabed stratum, and a gap between the single pile 1 and the steel barrel body 4 is filled with fine aggregate concrete 5; the bottom of the transition section steel pipe 2 is connected with the top of the single pile 1 through a reverse balance flange 3, and the reverse balance flange is provided with an upper structure connected with the transition section steel pipe 2, a lower structure connected with the single pile 1, and a high-strength bolt assembly 31 used for connecting the upper structure and the lower structure and applying pretightening force.
In the embodiment, the steel barrel body 4 with large horizontal rigidity is inserted into the lower part of the pile body of the single pile 1, so that the horizontal bearing capacity of a single pile foundation is improved, the size, the weight, the rock-entering depth and the like of the pile body are reduced, and the rock-embedding workload of the pile foundation is reduced or even avoided; the single pile 1 and the transition section steel pipe 2 are assembled and connected into a whole through the high-strength bolt assembly 31 of the reverse balance flange 3, and the contact surface of the transition section steel pipe 2 and the single pile 1 connected through the upper structure and the lower structure of the reverse balance flange 3 can be always in a pressed state in the stress process by applying pretightening force to the high-strength bolt assembly 31 of the reverse balance flange 3, so that the bending resistance bearing capacity of the connection part of the transition section steel pipe 2 and the single pile 1 through the reverse balance flange 3 is improved.
As shown in fig. 2 and fig. 3, the upper structure of the reverse balance flange 3 of the present embodiment has an annular upper flange plate 32 and a plurality of upper rib plates 33, the outer side surface of the upper flange plate 32 is connected with the inner side wall of the steel pipe 2 in the transition section in a welding manner, and the upper rib plates 33 are circumferentially arranged on the inner side wall of the steel pipe 2 in the transition section at uniform intervals and connected with the inner side wall of the steel pipe 2 in the transition section and the bottom of the upper flange plate 32 in a.
The lower structure of the reverse balance flange 3 is provided with an annular lower flange plate 34 and a plurality of lower rib plates 35, the outer side surfaces of the lower flange plates 34 are connected with the inner side wall of the single pile 1 in a welding mode, and the lower rib plates 35 are evenly arranged on the inner side wall of the single pile 1 in an annular mode at intervals and connected with the inner side wall of the single pile 1 and the lower flange plates 34 in a welding mode.
The upper rib plates 33 and the lower rib plates 35 are in one-to-one butt joint to form a group of balance surfaces; the upper flange plate and the lower flange plate are provided with bolt holes for connecting the high-strength bolt assembly 31, and the bolt holes are arranged at intervals with the upper rib plate and the lower rib plate which are connected to the upper flange plate and the lower flange plate.
During the specific construction of the embodiment, the single pile 1, the transition section steel pipe 2, the reverse balance flange 3 and the steel barrel body 4 can be processed and manufactured in a steel structure processing factory and then transported to a construction site by sea; after the single pile 1 and the steel barrel body 4 are sunk and penetrated, fine stone concrete 5 is poured in a gap between the single pile 1 and the steel barrel body 4; then hoisting the transition section steel pipe 2 at the upper part by adopting hoisting equipment, butting and assembling the transition section steel pipe with the single pile 1 at the lower part, and connecting the transition section steel pipe and the single pile into a whole through a high-strength bolt assembly 31; and finally, applying pretightening force to the high-strength bolt to enable the contact surface of the upper transition section steel pipe 2 and the lower single pile 1 to be in a pressed state, so that the bending resistance bearing capacity of the connection part is improved.
Wherein, the changeover portion steel pipe 2 can adopt the back preparation, if the single pile 1 surpasses to beat or the underbeat condition appears, or the straightness is great when the single pile body hangs down, the accessible changeover portion steel pipe 2 is corresponding adjusts, ensures that the foundation crest elevation satisfies the design requirement.
The above embodiment is merely a preferred embodiment of the present invention, and it should be understood by those skilled in the art that modifications or substitutions to the structural type or technical solution of the embodiment can be made without departing from the principle and essence of the present invention, but all of them should be covered by the protection scope of the present invention.
Claims (4)
1. The utility model provides an adopt marine wind-powered electricity generation stake bucket composite foundation structure of reverse balance flange structural connection which characterized in that: the marine offshore platform is provided with a single pile (1), a transition section steel pipe (2), an upper tower drum (6) and a steel barrel body (4), wherein the steel barrel body (4) is arranged on a surface of the marine platform, the single pile (1) is vertically inserted into the barrel body, and fine aggregate concrete (5) is filled between the single pile (1) and the steel barrel body (4); the top of the transition section steel pipe (2) is connected with an upper tower drum (6) through a flange, and the bottom of the transition section steel pipe (2) is connected with the top of the single pile (1) through a reverse balance flange (3);
the reverse balance flange is provided with an upper structure connected with the transition section steel pipe (2), a lower structure connected with the single pile (1), and a high-strength bolt assembly (31) used for connecting the upper structure and the lower structure and applying pretightening force.
2. The offshore wind power pile and bucket composite foundation structure connected by the reverse balance flange structure as claimed in claim 1, wherein: the upper structure of the reverse balance flange (3) is provided with an annular upper flange plate (32) and a plurality of upper rib plates (33), the outer side surface of the upper flange plate (32) is in welded connection with the inner side wall of the transition section steel pipe (2), and the upper rib plates (33) are uniformly arranged on the inner side wall of the transition section steel pipe (2) at intervals in a circumferential mode and are in welded connection with the inner side wall of the transition section steel pipe (2) and the bottom of the upper flange plate (32);
the lower structure of the reverse balance flange (3) is provided with an annular lower flange plate (34) and a plurality of lower rib plates (35), the outer side surface of the lower flange plate (34) is connected with the inner side wall of the single pile (1) in a welding mode, and the lower rib plates (35) are uniformly arranged on the inner side wall of the single pile (1) in a circumferential mode at intervals and are connected with the inner side wall of the single pile (1) and the lower flange plate (34) in a welding mode;
the upper rib plates (33) and the lower rib plates (35) are in one-to-one butt joint to form a group of balance surfaces.
3. The offshore wind power pile and bucket composite foundation structure connected by the reverse balance flange structure as claimed in claim 2, wherein: and the upper flange plate and the lower flange plate are provided with bolt holes for connecting the high-strength bolt assembly (31).
4. The offshore wind power pile and bucket composite foundation structure connected by the reverse balance flange structure as claimed in claim 1, wherein: the top of the steel barrel body (4) is flush with the surface of the sea bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021937402.1U CN213625671U (en) | 2020-09-08 | 2020-09-08 | Offshore wind power pile and bucket composite foundation structure connected by adopting reverse balance flange structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021937402.1U CN213625671U (en) | 2020-09-08 | 2020-09-08 | Offshore wind power pile and bucket composite foundation structure connected by adopting reverse balance flange structure |
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| CN213625671U true CN213625671U (en) | 2021-07-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197512A (en) * | 2021-12-01 | 2022-03-18 | 中国长江三峡集团有限公司 | Offshore wind power composite double-pile foundation suitable for shallow covering soil layer and construction method thereof |
| CN115807441A (en) * | 2022-12-07 | 2023-03-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Single pile foundation |
-
2020
- 2020-09-08 CN CN202021937402.1U patent/CN213625671U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197512A (en) * | 2021-12-01 | 2022-03-18 | 中国长江三峡集团有限公司 | Offshore wind power composite double-pile foundation suitable for shallow covering soil layer and construction method thereof |
| CN115807441A (en) * | 2022-12-07 | 2023-03-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Single pile foundation |
| CN115807441B (en) * | 2022-12-07 | 2023-09-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Method for installing single pile foundation |
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