CN211228573U - Temporary locking device for skirt pile type jacket and steel pipe pile by using rear pile method - Google Patents
Temporary locking device for skirt pile type jacket and steel pipe pile by using rear pile method Download PDFInfo
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- CN211228573U CN211228573U CN201921508241.1U CN201921508241U CN211228573U CN 211228573 U CN211228573 U CN 211228573U CN 201921508241 U CN201921508241 U CN 201921508241U CN 211228573 U CN211228573 U CN 211228573U
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Abstract
The application discloses interim locking device of back stake method skirt pile formula jacket and steel-pipe pile, interim locking device includes: the jacket skirt piles and the steel pipe piles arranged inside the skirt piles are connected in the horizontal direction through the horizontal locking assemblies, and the skirt piles and the steel pipe piles are connected in the vertical direction through the vertical locking assemblies. This application can lock jacket and steel-pipe pile temporarily, has ensured the grout quality of circumferential weld between jacket and the steel-pipe pile.
Description
Technical Field
The application relates to a locking device temporarily between skirt pile formula jacket and steel-pipe pile, wherein, skirt pile formula jacket can be used to fan foundation, marine booster station basis and offshore platform basis etc..
Background
The jacket structure is one of the main foundation structure types of an offshore wind turbine foundation, an offshore booster station foundation and an offshore oil production platform foundation. The jacket installation and construction process is divided into a pile-first method and a pile-last method. The method comprises the steps of firstly, positioning and pile sinking of a jacket by adopting an auxiliary platform, then, integrally hoisting a jacket foundation, leveling the jacket before hoisting, then inserting the end part of a jacket supporting leg into a steel pipe pile, or firstly lowering the jacket and then leveling by a hydraulic means, and finally, grouting underwater to connect the jacket and the steel pipe pile. The jacket foundation structure is characterized in that skirt piles are arranged at the tail ends of jacket support legs or piles are directly inserted into jacket main pile legs, when offshore construction is conducted, jacket hoisting is conducted firstly, the jacket is placed on the sea bed surface, steel pipe piles are driven into the sea bed through positioning of the skirt piles or the jacket, then leveling and grouting of the jacket are conducted, and the jacket and the steel pipe piles are connected.
For the annular seam grouting of the jacket and the steel pipe pile, factors influencing the grouting quality are many, and the method mainly comprises the following two aspects: firstly, cleaning sludge in a circular seam and cleaning the surface of a steel pipe after the jacket installation and the steel pipe pile erection are finished; and secondly, temporarily locking the jacket and the steel pipe pile before the slurry reaches a certain strength before grouting and after grouting is finished. Mud in the annular gap can be prevented by auxiliary measures such as auxiliary measure packers and mud scraping sheets, and can also be removed by a mud cleaning process. And before grouting or during grouting, relative displacement may occur between the jacket and the steel pipe pile due to self weight of the jacket and mud surface scouring, and after grouting, the strength of the grouting material in the circumferential joint does not meet certain requirements, and relative displacement may occur due to external environmental factors, such as wind, wave, flow and the like, so that the grouting quality of the circumferential joint between the jacket and the steel pipe pile is seriously affected.
SUMMERY OF THE UTILITY MODEL
To the shortcoming or not enough of above-mentioned prior art, the technical problem that this application will be solved provides a back stake method skirt pile formula jacket and steel-pipe pile temporary locking device, and it has simple structure, saves characteristics such as construction cost, provides the powerful guarantee for guaranteeing the circumferential weld grout quality between jacket and the steel-pipe pile.
In order to solve the technical problem, the application is realized by the following technical scheme:
a post-pile skirt pile type jacket and steel pipe pile temporary locking device, comprising: the jacket skirt piles and the steel pipe piles arranged inside the skirt piles are connected in the horizontal direction through the horizontal locking assemblies, and the skirt piles and the steel pipe piles are connected in the vertical direction through the vertical locking assemblies.
Further, in the above temporary locking device, the horizontal locking assembly includes: and the skirt piles and the steel pipe piles are connected by the threaded rods.
Further, in the temporary locking device, the threaded rods are uniformly arranged at the same elevation along the circumferential direction.
Further, the above temporary locking device, wherein the vertical locking assembly comprises: the steel pipe pile comprises a beam plate arranged on the pile top of the steel pipe pile, an outrigger arranged on the pile top of the steel pipe pile, a steel pull rod and a turn buckle, wherein the beam plate is fixed with the outrigger, a lifting lug is arranged on the outrigger, a hanging lug is arranged on the skirt pile, and the turn buckle is connected to the hanging lug; one end of the steel pull rod is connected with the lifting lug, and the other end of the steel pull rod is connected with the turnbuckle.
Further, in the above temporary locking device, the beam plate and the outrigger are fixed by welding.
Further, in the above temporary locking device, the number of the outriggers is at least one.
A method for temporarily locking a skirt pile type jacket and a steel pipe pile by a post-pile method comprises the following steps: lowering the jacket to the surface of the sea bed, and performing steel pipe pile inserting, piling and leveling processes after basic leveling; locking a jacket skirt pile and a steel pipe pile arranged in the skirt pile in the horizontal direction by adopting a horizontal locking assembly; and locking the skirt piles and the steel pipe piles in the vertical direction by adopting a vertical locking assembly.
Further, the method may further comprise locking the jacket skirt pile and the steel pipe pile disposed inside the skirt pile in a horizontal direction using a plurality of threaded rods.
Further, in the above method, the threaded rods are uniformly arranged in the circumferential direction at the same elevation, so that the jacket skirt pile and the steel pipe pile disposed inside the skirt pile are horizontally locked.
Further, in the method, a beam plate and an outrigger are arranged on the pile top of the steel pipe pile, the beam plate and the outrigger are fixed, a lifting lug arranged on the outrigger is connected with a hanging lug arranged on the skirt pile through a steel pull rod, and a turnbuckle is arranged on the steel pull rod.
Compared with the prior art, the method has the following technical effects:
(1) the temporary locking device is processed before the jacket and the steel pipe pile are shipped, the processing is simple and convenient, and the construction cost is reduced;
(2) the construction method is simple, high in efficiency and capable of saving the site construction time;
(3) the temporary locking device and the temporary locking method effectively lock the jacket and the steel pipe pile temporarily, and ensure the grouting quality of the annular joint between the jacket and the steel pipe pile.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1: the application is a schematic diagram of a temporary locking device for a skirt pile type jacket and a steel pipe pile by a post-pile method;
FIG. 2: the temporary locking diagram of the temporary locking device for the skirt pile type jacket and the steel pipe pile in the horizontal direction is shown;
FIG. 3: according to the temporary locking diagram of the temporary locking device for the skirt pile type jacket and the steel pipe pile in the vertical direction after the application;
FIG. 4: the structure schematic diagram of the beam plate and the cantilever beam during installation in the application;
FIG. 5: the application discloses a temporary locking method flow chart of a post-pile skirt pile type jacket and a steel pipe pile.
Detailed Description
The conception, specific structure and technical effects of the present application will be further described in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present application.
As shown in fig. 1 to 3, the temporary locking device M of the present embodiment for a skirt pile type jacket and a steel pipe pile includes: and the horizontal locking assembly is used for horizontally connecting the jacket 10 skirt piles 30 and the steel pipe piles 20 arranged in the skirt piles 30, and the vertical locking assembly is used for vertically connecting the skirt piles 30 and the steel pipe piles 20. In the embodiment, before the annular joint between the jacket 10 and the steel pipe pile 20 is grouted, the jacket 10 skirt pile 30 and the steel pipe pile 20 are temporarily locked by the temporary locking device M, so that the problem of relative displacement possibly occurring between the jacket 10 and the steel pipe pile 20 in the annular joint grouting process is effectively solved, and the grouting quality of the annular joint between the jacket 10 and the steel pipe pile 20 is further ensured.
In fig. 1, a grouting line 40 is also shown, and the annular joint can be grouted through the grouting line 40.
As shown in fig. 2, in the present embodiment, the horizontal locking assembly includes: and a plurality of threaded rods 51, wherein the threaded rods 51 connect the skirt pile 30 and the steel pipe pile 20. Wherein the threaded rod 51 is tightly connected to the skirt pile 30, and the threaded rod 51 is processed in advance in a processing plant before the jacket 10 is shipped, so as to reduce the subsequent operation time.
In the present embodiment, the temporary locking is performed by first performing locking in the horizontal direction and then performing locking in the vertical direction.
Wherein the temporary locking in the horizontal direction requires underwater tightening of the threaded rod 51 by the diver, while the temporary locking in the horizontal direction requires the crane to assist in leveling the jacket 10.
Further, the threaded rods 51 are uniformly arranged in the circumferential direction at the same elevation. Wherein, the number of the threaded rods 51 needs to be obtained by checking.
After the temporary locking in the horizontal direction is finished, the temporary locking in the vertical direction is performed, the temporary locking device M is lowered to the top opening of the steel pipe pile 20 by a crane, and the temporary locking in the vertical direction is performed through underwater operation of a diver.
As shown in fig. 3 and 4, the vertical locking assembly includes: the steel pipe pile comprises a beam plate 21 arranged at the pile top of the steel pipe pile 20, an outrigger 22 arranged at the pile top of the steel pipe pile 20, a steel pull rod 61 and a turn buckle 62, wherein the beam plate 21 and the outrigger 22 are fixed, a lifting lug 201 is arranged on the outrigger 22, a hanging lug 301 is arranged on the skirt pile 30, and the turn buckle 62 is connected to the hanging lug 301; one end of the steel pull rod 61 is connected with the lifting lug 301, and the other end of the steel pull rod 61 is connected with the turnbuckle 62.
The beam plate 21 and the outriggers 22 are connected by welding, the setting thickness of the beam plate 21 and the setting number of the outriggers 22 need to be determined by checking, and the steel pull rod 61, the turnbuckle 62, the hanging lug 301 and the lifting lug 201 need to be determined by checking according to the self weight of the jacket 10.
The number of the outriggers 22 is at least one, and fig. 4 only illustrates a case where two outriggers 22 are provided, but the disclosure of the number of the above-mentioned arrangements does not limit the protection scope of the present application. Of course, the number of the hanging lugs 301 and the hanging lugs 201 is adaptively adjusted according to the number of the outriggers 22.
As shown in fig. 5, the present application also provides a method for temporarily locking a skirt pile type jacket and a steel pipe pile by a post-pile method, comprising the following steps:
s101, the jacket 10 is lowered to the sea bed surface, and after basic leveling, the steel pipe pile 20 is inserted, driven and leveled.
The temporary locking method is performed before the circumferential seam grouting process after the jacket 10 is firstly placed, then the pile is inserted and driven to the designed elevation and the leveling process, the temporary locking method can be performed on the jacket and the steel pipe pile before grouting and during grouting, and the temporary locking device can be detached after the grouting reaches certain strength.
And S102, locking the skirt piles 30 of the jacket 10 and the steel pipe piles 20 arranged in the skirt piles 30 in the horizontal direction by adopting horizontal locking assemblies.
Specifically, the skirt pile 30 of the jacket 10 and the steel pipe pile 20 provided inside the skirt pile 30 are locked in the horizontal direction using a plurality of threaded rods 51. Wherein the temporary locking in the horizontal direction requires underwater tightening of the threaded rod 51 by the diver, while the temporary locking in the horizontal direction requires the crane to assist in leveling the jacket 10.
The threaded rods 51 are uniformly arranged in the circumferential direction at the same level to lock the skirt piles 30 of the jacket 10 and the steel pipe piles 20 provided inside the skirt piles 30 in the horizontal direction. Wherein, the number of the threaded rods 51 needs to be obtained by checking.
After the temporary locking in the horizontal direction is finished, the temporary locking in the vertical direction is performed, the temporary locking device M is lowered to the top opening of the steel pipe pile 20 by a crane, and the temporary locking in the vertical direction is performed through underwater operation of a diver.
And S103, locking the skirt piles 30 and the steel pipe piles 20 in the vertical direction by adopting a vertical locking assembly.
The steel pipe pile 20 is provided with a beam plate 21 and an outrigger 22 at the pile top, the beam plate 21 and the outrigger 22 are fixed, a lifting lug 201 arranged on the outrigger 22 and a hanging lug 301 arranged on the skirt pile 30 are connected through a steel pull rod 61, and a turnbuckle 62 is arranged on the steel pull rod 61.
The skirt pile 30 type jacket 10 and the steel pipe pile 20 temporary locking device M comprise a pile top beam plate 21, a pile top cantilever beam 22, a turnbuckle 62, a steel wire rope, an upper hanging lug 301 of the steel pipe pile 20, an upper hanging lug 301 of the pile top cantilever beam 22, a lifting lug 201 and a threaded rod 51; the pile top beam plate 21 and the pile top outrigger 22 are connected by welding; the hanging lug 301 of the pile top cantilever beam 22 is provided with a steel wire rope, and the other end of the steel wire rope is connected with a turn buckle 62; the lifting lug 201 of the steel pipe pile 20 is provided with a steel wire rope.
The beam plate 21 and the outriggers 22 are connected by welding, the setting thickness of the beam plate 21 and the setting number of the outriggers 22 need to be determined by checking, and the steel pull rod 61, the turnbuckle 62, the hanging lug 301 and the lifting lug 201 need to be determined by checking according to the self weight of the jacket 10.
The temporary locking device is processed before the jacket and the steel pipe pile are shipped, the processing is simple and convenient, and the construction cost is reduced; the construction method is simple, high in efficiency and capable of saving the site construction time; the temporary locking device and the temporary locking method effectively lock the jacket and the steel pipe pile temporarily, and ensure the grouting quality of the annular joint between the jacket and the steel pipe pile. Therefore, the method has a wide market application prospect.
The above embodiments are merely to illustrate the technical solutions of the present application and are not limitative, and the present application is described in detail with reference to preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made in the present invention without departing from the spirit and scope of the present invention and shall be covered by the appended claims.
Claims (6)
1. A temporary locking device for a skirt pile type jacket and a steel pipe pile in a post-pile method is characterized by comprising: a horizontal locking assembly and a vertical locking assembly,
the jacket skirt piles and the steel pipe piles arranged in the skirt piles are connected in the horizontal direction through the horizontal locking assemblies,
and the skirt piles and the steel pipe piles are connected in the vertical direction through the vertical locking assemblies.
2. A temporary locking arrangement as recited in claim 1, wherein the horizontal locking assembly comprises: and the skirt piles and the steel pipe piles are connected by the threaded rods.
3. A temporary locking device as claimed in claim 2, wherein the threaded rods are uniformly arranged circumferentially at the same elevation.
4. A temporary locking device as claimed in claim 1, wherein the vertical locking assembly comprises: the steel pipe pile comprises a beam plate arranged on the pile top of the steel pipe pile, an outrigger arranged on the pile top of the steel pipe pile, a steel pull rod and a turn buckle, wherein the beam plate is fixed with the outrigger, a lifting lug is arranged on the outrigger, a hanging lug is arranged on the skirt pile, and the turn buckle is connected to the hanging lug; one end of the steel pull rod is connected with the lifting lug, and the other end of the steel pull rod is connected with the turnbuckle.
5. A temporary locking device according to claim 4, wherein said beam plate and said outrigger are fixed by welding.
6. A temporary locking device according to claim 4 or 5, wherein the number of the cantilever provided is at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921508241.1U CN211228573U (en) | 2019-09-11 | 2019-09-11 | Temporary locking device for skirt pile type jacket and steel pipe pile by using rear pile method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921508241.1U CN211228573U (en) | 2019-09-11 | 2019-09-11 | Temporary locking device for skirt pile type jacket and steel pipe pile by using rear pile method |
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| Publication Number | Publication Date |
|---|---|
| CN211228573U true CN211228573U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921508241.1U Active CN211228573U (en) | 2019-09-11 | 2019-09-11 | Temporary locking device for skirt pile type jacket and steel pipe pile by using rear pile method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552366A (en) * | 2019-09-11 | 2019-12-10 | 中交港湾（上海）科技有限公司 | Temporary locking device and method for skirt pile type jacket and steel pipe pile by post-pile method |
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2019
- 2019-09-11 CN CN201921508241.1U patent/CN211228573U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552366A (en) * | 2019-09-11 | 2019-12-10 | 中交港湾（上海）科技有限公司 | Temporary locking device and method for skirt pile type jacket and steel pipe pile by post-pile method |
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