CN112112182A - Jacket platform - Google Patents
Jacket platform Download PDFInfo
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- CN112112182A CN112112182A CN202010815371.0A CN202010815371A CN112112182A CN 112112182 A CN112112182 A CN 112112182A CN 202010815371 A CN202010815371 A CN 202010815371A CN 112112182 A CN112112182 A CN 112112182A
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- jacket
- steel pile
- gap
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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
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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
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
- Foundations (AREA)
Abstract
The invention discloses a jacket platform, which is mainly suitable for a jacket platform of a shallow water leg inner pile, and comprises a jacket and a steel pile, wherein the steel pile is downwards inserted into a conduit leg of the jacket and is fixed with a seabed, the jacket platform also comprises a crown plate and a gap plate, the crown plate is sleeved on the outer wall of the steel pile, the bottom of the crown plate is fixed with the top end of the conduit leg to connect the conduit leg and the steel pile into a whole, the environmental load and the dead weight borne by the jacket are transmitted to the steel pile, the gap plate is arranged between the inner wall of the conduit leg and the outer wall of the steel pile, a plurality of gap plates are arranged at intervals around the steel pile and are fixed with the inner wall of the conduit leg, further, when the jacket platform is in a working state, the load between the jacket and the steel pile is transmitted, the jacket load is transmitted to the steel pile through the crown plate and the gap plate, and finally the design of a pile foundation is transmitted, the strength of the conduit leg, the steel pile and the crown plate is fully utilized, and grouting is not, the defects of the traditional grouting scheme are avoided, and meanwhile, the construction period and the construction cost can be greatly saved.
Description
Technical Field
The invention relates to the field of jacket platforms suitable for shallow water leg internal piles, in particular to a jacket platform which does not need to be grouted among pile legs.
Background
At present, a scheme of grouting is adopted between a guide pipe leg and a steel pile of a conventional shallow water leg internal pile, the guide pipe leg and the steel pile form a combined interface through grouting to jointly bear vertical load and horizontal environmental force of the platform, and the environmental load generally comprises wind load, wave flow load, ice load and the like.
The grouting scheme between the guide pipe legs and the steel piles has the following problems:
(1) the jacket grouting design scheme needs to design a grouting system, so that the design and construction cost of the grouting system is increased, and the workload of cutting a grouting pipeline underwater on the sea after grouting is increased.
(2) The jacket grouting design scheme increases the material cost of cement paste, the shipping cost and the floating crane workload brought by grouting operation.
(3) The jacket grouting design scheme needs to use a packer, and the packer belongs to consumable materials and cannot be recycled, so that the production cost and the construction and installation cost of the device are increased.
(4) The grouting design scheme of the jacket usually has larger strength allowance of the guide pipe legs and the steel piles, the strength of the guide pipe legs and the steel piles cannot be fully utilized, and the grouting jacket design scheme cannot solve the problem of large strength design allowance of the guide pipe legs and the steel piles because the jacket is controlled by construction design or structural construction requirements and cannot be infinitely optimally designed.
(5) In the conventional jacket grouting design scheme, the load transmitted by cement paste between pile legs is not actually considered, but the load shared by the pipe legs at the variable cross sections (the steel piles are transited to the combined cross sections of the pipe legs and the steel piles) at the tops of the pipe legs is used as a design foundation, so that the strength design allowance of the jacket is large.
(6) In the jacket grouting design scheme, the clearance between the guide pipe legs and the steel pile is large, and the clearance plates designed in the guide pipe legs of the horizontal layer of the jacket are only used as guide pieces, so that the guide effect is achieved during the construction of the steel pile, and the concentricity of the steel pile and the guide pipe legs is ensured as far as possible.
(7) The design scheme of jacket grouting has the risk of polluting the marine environment by leaking slurry, on one hand, the reason is that the packer equipment has the possibility of failure, and if the packer fails, slurry can leak from the bottom of the conduit leg; another aspect is the possibility of spillage from the top of the conduit leg after the grout has been filled if it is not handled well at the top.
Disclosure of Invention
The invention aims to provide a jacket platform without grouting operation between a pipe leg and a steel pile.
In order to solve the technical problems, the invention provides a jacket platform, which comprises a jacket and a steel pile, wherein the steel pile is downwards inserted into a pipe leg of the jacket and is fixed with a seabed, the jacket platform also comprises a crown plate and a gap plate, the crown plate is sleeved on the outer wall of the steel pile, the bottom of the crown plate is fixed with the top end of the pipe leg to connect the pipe leg and the steel pile into a whole, the gap plate is arranged between the inner wall of the pipe leg and the outer wall of the steel pile, and a plurality of gap plates are arranged at intervals around the steel pile and are fixed with the inner wall of the pipe leg.
Further, the width of the gap between the steel pile and the pipe leg can be 1 inch.
Furthermore, the jacket further comprises a plurality of cross braces and inclined struts, the cross braces and the inclined struts are connected between the pipe legs to form a plurality of horizontal layers in the vertical direction, and the gap plates are arranged at the joints of the pipe legs and the horizontal layers.
Further, the gap plates are arc-shaped plates, and the central angle range corresponding to the single gap plate is 10-30 degrees.
Further, the end face of the gap plate along the insertion direction of the steel pile is an inclined plane, and the inclination proportion range of the inclined plane is 1: 5 to 1: 2.
Further, the gap plate is a steel plate with the length of 1m and the thickness of 12 mm.
Further, crown plate includes a plurality of triangle arcs board, triangle arcs board is around steel pile outer wall ring distributes.
Furthermore, the thickness range of the triangular arc plate is 50 mm-150 mm.
Further, the steel piles and the guide pipe legs are distributed coaxially.
Furthermore, the welding positions of the gap plate and the inner wall of the conduit leg are polished.
The invention has the technical effects that: 1. the jacket platform of the invention is mainly suitable for a jacket platform of a shallow water leg inner pile, comprises a jacket and a steel pile, wherein the steel pile is downwards inserted into a conduit leg of the jacket and is fixed with a seabed, the jacket platform also comprises a crown plate and a gap plate, the crown plate is sleeved on the outer wall of the steel pile, the bottom of the crown plate is fixed with the top end of the conduit leg to connect the conduit leg and the steel pile into a whole, the environmental load and the dead weight born by the jacket are transmitted to the steel pile, the gap plate is arranged between the inner wall of the conduit leg and the outer wall of the steel pile, a plurality of gap plates are arranged at intervals around the steel pile and are fixed with the inner wall of the conduit leg, further, when the jacket platform is in a working state, the load between the jacket and the steel pile is transmitted, the jacket load is transmitted to the steel pile through the crown plate and the gap plate, and finally, the design of a pile foundation is transmitted, the strength of the conduit leg, the steel pile and the crown plate is fully utilized, and grouting is, the defects of the traditional grouting scheme are avoided, and meanwhile, the construction period and the construction cost can be greatly saved.
2. According to the jacket platform, the end face of the gap plate along the insertion direction of the steel pile is an inclined plane, and the inclination proportion range of the inclined plane is 1: and 5 to 1:2, and the design of the inclined plane can further ensure the smooth insertion of the steel pile, so that the construction is convenient.
Drawings
FIG. 1 is a schematic elevation view of a jacket platform of the present invention;
FIG. 2 is a schematic view of a jacket platform jacket of the present invention;
FIG. 3 is an enlarged schematic view of the jacket platform crown plate of the present invention;
FIG. 4 is an enlarged schematic view of the jacket platform gap plate of the present invention;
FIG. 5 is a schematic cross-sectional view of the jacket platform crown plate of the present invention at A in FIG. 3;
FIG. 6 is a schematic cross-sectional view of the jacket platform gap plate B of the present invention of FIG. 4;
fig. 7 is a schematic cross-sectional view of the jacket platform gap plate C of fig. 6 in accordance with the present invention.
The main reference numbers in the figures illustrate:
1-jacket platform, 2-horizontal layer, 3-upper module, 4-main leg, 5-inclined plane, 11-jacket, 12-steel pile, 13-crown plate, 14-gap plate, 111-pipe leg, 112-cross brace, 113-cross brace and 131-triangular arc plate.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Fig. 1 is a schematic elevation view of a jacket platform of the present invention, fig. 2 is a schematic illustration of a jacket platform of the present invention, fig. 3 is an enlarged schematic illustration of a crown plate of a jacket platform of the present invention, fig. 4 is an enlarged schematic illustration of a gap plate of a jacket platform of the present invention, fig. 5 is a schematic cross-sectional illustration of a crown plate a of a jacket platform of the present invention in fig. 3, fig. 6 is a schematic cross-sectional illustration of a gap plate B of a jacket platform of the present invention in fig. 4, and fig. 7 is a schematic cross-sectional illustration of a gap plate C of a jacket platform of the present invention in fig. 6.
As shown in fig. 1 to 4, a jacket platform 1 comprises a jacket 11 and a steel pile 12, wherein the steel pile 12 is inserted downwards into a conduit leg 111 of the jacket 11 and fixed with a seabed, the jacket platform further comprises a crown plate 13 and a gap plate 14, the crown plate 13 is sleeved on the outer wall of the steel pile 12, the bottom of the crown plate is fixed with the top end of the conduit leg 111 to connect the conduit leg 111 and the steel pile 12 into a whole, the gap plate 14 is arranged between the inner wall of the conduit leg 111 and the outer wall of the steel pile 12, and a plurality of gap plates 14 are arranged around the steel pile 12 at intervals and fixed with the inner wall of the conduit leg 111.
Referring to fig. 6 and 7, the width of the gap between the steel pile 12 and the guide pipe leg 111 is 1 inch, and compared with the conventional grouting scheme, the gap between the steel pile 12 and the guide pipe leg 111 is appropriately reduced, so that the load borne by the jacket 11 is conveniently transmitted to the steel pile 12.
Referring to fig. 1 and 2, the jacket 11 further includes a plurality of wales 112 and braces 113, the wales 112 and the braces 113 are connected between the pipe legs 111 and constitute a plurality of horizontal layers 2 in the vertical direction, and the pipe legs 111 are provided with gap plates 14 at the connection with the horizontal layers 2.
As shown in fig. 6, the gap plates 14 are arc-shaped plates, the central angle of each gap plate 14 ranges from 10 ° to 30 °, and preferably, in one embodiment of the present invention, the gap plates 14 are provided with 8 pieces, and the central angle of each gap plate 14 is 22.5 °, which facilitates the transmission of force between the pipe leg 111 and the steel pile 12.
As shown in fig. 7, the end surface of the gap plate 14 in the insertion direction of the steel pile 12 is an inclined surface 5, and the inclination ratio of the inclined surface 5 is 1: 5 to 1:2, preferably, in one embodiment of the present invention, the slope ratio of the slope 5 is 1:4, which facilitates the insertion of the steel pile 12 from the conduit leg 111, and the welding positions of the gap plate 14 and the inner wall of the conduit leg 111 are ground.
As shown in fig. 3 and 5, the crown plate 13 includes a plurality of triangular arc plates 131, and the triangular arc plates 131 are circumferentially distributed around the outer wall of the steel pile 12.
Further, the thickness of the triangular arc plate 131 ranges from 50mm to 150mm, and the preferable range is from 60mm to 100 mm.
As shown in fig. 6, the steel piles 12 are arranged coaxially with the guide tube legs 111.
Referring to fig. 1-7, one embodiment of the present invention: the jacket 11 of the jacket platform 1 is a four-leg jacket, the top end face of each pipe leg 111 is fixedly welded with a crown plate 13, the crown plate 13 is composed of 6 triangular arc plates 131, the triangular arc plates 131 are distributed around the outer wall of the steel pile 12, and one plate is arranged at intervals of 60 degrees; including 3 horizontal layers 3, the 111 inner walls interval welded fastening of pipe leg of 2 departments of every horizontal layer has 8 clearance plates 14, clearance plate 14 all does the processing of polishing with the 111 inner wall welded position of pipe leg, make things convenient for pile 12 to insert pipe leg 111, the diameter of pile 12 is 48 cun, the internal diameter of pipe leg 111 is 50 cun, pile 12 is 1 cun with pipe leg 111's clearance size, clearance plate 14 is the steel sheet that length is 1m thickness for 12mm, crown plate 13's thickness is 70 mm.
Referring to fig. 1, the specific installation process of the present invention: after the jacket 11 is bottomed at sea, inserting the steel pile 12 from the inside of the guide pipe leg 111, hammering the steel pile 12 into the seabed to a preset depth to firmly combine the steel pile 12 with the pile foundation, after the installation operation of the steel pile 12 is completed, putting the crown plate 4 on the top end of the guide pipe leg 111, welding the crown plate with the steel pile 12 and the guide pipe leg 111 together, completing the installation of the jacket 11, and completing the installation of the jacket platform 1 of the invention after the upper module 3 of the jacket platform 1 is butt-welded with the part of the main leg 4 and the steel pile 12 protruding out of the top end of the guide pipe leg 111 into a whole.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. A jacket platform comprising a jacket and a steel pile inserted down a leg of the jacket and secured to a seabed, wherein: the steel pile comprises a steel pile outer wall, and is characterized by further comprising crown plates and gap plates, wherein the crown plates are sleeved on the steel pile outer wall, the bottoms of the crown plates and the top ends of the pipe legs are fixed, the pipe legs and the steel pile are connected into a whole, the gap plates are arranged between the inner walls of the pipe legs and the outer wall of the steel pile, and the gap plates surround the steel pile and are arranged at intervals and fixed with the inner walls of the pipe legs.
2. A jacket platform according to claim 1, wherein: the jacket further comprises a plurality of cross braces and inclined struts, the cross braces and the inclined struts are connected between the pipe legs to form a plurality of horizontal layers in the vertical direction, and the joints of the pipe legs and the horizontal layers are provided with the gap plates.
3. A jacket platform according to claim 1, wherein: the gap plates are arc-shaped plates, and the central angles corresponding to the gap plates range from 10 degrees to 30 degrees.
4. A jacket platform according to claim 1, wherein: the end face of the gap plate along the insertion direction of the steel pile is an inclined plane, and the inclination proportion of the inclined plane is 1: 5 to 1: 2.
5. A jacket platform according to claim 1, wherein: the width of the gap between the steel pile and the pipe leg is 1 inch.
6. A jacket platform according to claim 1, wherein: the gap plate is a steel plate with the length of 1m and the thickness of 12 mm.
7. A jacket platform according to claim 1, wherein: the crown plate comprises a plurality of triangular arc plates, and the triangular arc plates are distributed around the outer wall of the steel pile in the circumferential direction.
8. A jacket platform according to claim 7, wherein: the thickness range of the triangular arc plate is 50 mm-150 mm.
9. A jacket platform according to claim 1, wherein: the steel piles and the guide pipe legs are distributed coaxially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010815371.0A CN112112182A (en) | 2020-08-14 | 2020-08-14 | Jacket platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010815371.0A CN112112182A (en) | 2020-08-14 | 2020-08-14 | Jacket platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112112182A true CN112112182A (en) | 2020-12-22 |
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ID=73804122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010815371.0A Pending CN112112182A (en) | 2020-08-14 | 2020-08-14 | Jacket platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112112182A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108804125A (en) * | 2018-06-29 | 2018-11-13 | 四川科道芯国智能技术股份有限公司 | application management method, device and terminal device |
| CN113211008A (en) * | 2021-04-10 | 2021-08-06 | 海洋石油工程（青岛）有限公司 | Prefabrication process of king crown plate of main pile type jacket |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206015708U (en) * | 2016-08-31 | 2017-03-15 | 福建省新能海上风电研发中心有限公司 | A kind of new leading truck and the united offshore wind power foundation of catheterostat |
| KR101755410B1 (en) * | 2017-05-08 | 2017-07-13 | 주식회사 에이스이엔씨 | Offshore piled foundation improved water tightness and construction method therefor |
| CN109930624A (en) * | 2019-04-08 | 2019-06-25 | 龙源（北京）风电工程设计咨询有限公司 | A kind of embedding petrographic province blower foundation of offshore wind farm and construction method |
| CN110158639A (en) * | 2019-06-12 | 2019-08-23 | 长江勘测规划设计研究有限责任公司 | The offshore boosting station combination foundation being made of jacket and suction tube |
| CN209482343U (en) * | 2018-12-19 | 2019-10-11 | 中国电建集团华东勘测设计研究院有限公司 | Jacket steel bucket foundation |
-
2020
- 2020-08-14 CN CN202010815371.0A patent/CN112112182A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206015708U (en) * | 2016-08-31 | 2017-03-15 | 福建省新能海上风电研发中心有限公司 | A kind of new leading truck and the united offshore wind power foundation of catheterostat |
| KR101755410B1 (en) * | 2017-05-08 | 2017-07-13 | 주식회사 에이스이엔씨 | Offshore piled foundation improved water tightness and construction method therefor |
| CN209482343U (en) * | 2018-12-19 | 2019-10-11 | 中国电建集团华东勘测设计研究院有限公司 | Jacket steel bucket foundation |
| CN109930624A (en) * | 2019-04-08 | 2019-06-25 | 龙源（北京）风电工程设计咨询有限公司 | A kind of embedding petrographic province blower foundation of offshore wind farm and construction method |
| CN110158639A (en) * | 2019-06-12 | 2019-08-23 | 长江勘测规划设计研究有限责任公司 | The offshore boosting station combination foundation being made of jacket and suction tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108804125A (en) * | 2018-06-29 | 2018-11-13 | 四川科道芯国智能技术股份有限公司 | application management method, device and terminal device |
| CN113211008A (en) * | 2021-04-10 | 2021-08-06 | 海洋石油工程（青岛）有限公司 | Prefabrication process of king crown plate of main pile type jacket |
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Application publication date: 20201222 |