CN215715494U - Partially prefabricated offshore high pile cap - Google Patents

Partially prefabricated offshore high pile cap Download PDF

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Publication number
CN215715494U
CN215715494U CN202121551144.8U CN202121551144U CN215715494U CN 215715494 U CN215715494 U CN 215715494U CN 202121551144 U CN202121551144 U CN 202121551144U CN 215715494 U CN215715494 U CN 215715494U
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China
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prefabricated
stage
cast
bearing platform
bottom plate
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CN202121551144.8U
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周永
郇彩云
沈侃敏
姜贞强
高鹏
孙杏建
何奔
陆南辛
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PowerChina Huadong Engineering Corp Ltd
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PowerChina Huadong Engineering Corp Ltd
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Abstract

The utility model relates to a partially prefabricated offshore high pile cap. The utility model is suitable for the technical field of offshore wind power. The technical scheme of the utility model is a partially prefabricated offshore high pile cap, which is used for connecting a tower cylinder and a steel pipe pile and is characterized in that: the offshore high pile cap is divided into a prefabricated part and a cast-in-place part; the prefabricated part comprises a first-stage prefabricated bottom plate and a circle of first-stage prefabricated side plates which are manufactured on the upper edge of the first-stage prefabricated bottom plate, the first-stage prefabricated bottom plate and the first-stage prefabricated side plates are enclosed into a bowl-shaped structure, and a plurality of reserved holes matched with the steel pipe piles are formed in the first-stage prefabricated bottom plate; the cast-in-place part is provided with a second-stage cast-in-place bearing platform which is formed in the bowl-shaped structure in a pouring mode, and a plurality of anchor bolts used for connecting the tower barrel are fixed on the second-stage cast-in-place bearing platform. The prefabricated part also comprises a bearing platform steel bar structure which is arranged in the bowl-shaped structure and connected with steel bars in the prefabricated side plate.

Description

Partially prefabricated offshore high pile cap
Technical Field
The utility model relates to a partially prefabricated offshore high pile cap. The method is suitable for the technical field of offshore wind power.
Background
The high pile cap foundation is a special foundation type in the field of offshore wind power engineering in China, is a common structure of a coastal wharf and a pier and consists of a foundation pile and a cap, wherein the foundation pile can be a precast pile or a steel pipe pile; the upper bearing platform is of a cast-in-place reinforced concrete structure. In order to relatively save construction process and construction time, the high pile cap foundation usually adopts a form of combining a single cap and a plurality of foundation piles. Because the upper part adopts the cast-in-place concrete cushion cap, foundation structure is comparatively thick and heavy, cushion cap self rigidity is great, and in order to strengthen the rigidity of basic lower part, the inside concrete of certain length that pours into of steel-pipe pile below the cushion cap, make many foundation piles imbed concrete cushion cap certain length through pouring, and from the angle of structural stress and control horizontal deflection consideration, the foundation pile is designed as the batter pile usually.
The construction of the high pile cap foundation adopts conventional equipment and process, the construction experience is rich, but the upper part of the high pile cap foundation is of a cast-in-place concrete structure, bottom sealing concrete, a steel sleeve box cofferdam (which can also be used as a concrete pouring template), reinforcing steel bars are bound on site, and concrete is pumped, so that the offshore construction process is complex, the construction is greatly influenced by sea conditions and weather, and the construction period is longer.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: aiming at the problems, the partially prefabricated offshore high-pile bearing platform is provided to improve the construction operation efficiency of the offshore high-pile bearing platform.
The technical scheme adopted by the utility model is as follows: the utility model provides a partially prefabricated marine high pile cushion cap for connect a tower section of thick bamboo and steel-pipe pile, its characterized in that: the offshore high pile cap is divided into a prefabricated part and a cast-in-place part;
the prefabricated part comprises a first-stage prefabricated bottom plate and a circle of first-stage prefabricated side plates which are manufactured on the upper edge of the first-stage prefabricated bottom plate, the first-stage prefabricated bottom plate and the first-stage prefabricated side plates are enclosed into a bowl-shaped structure, and a plurality of reserved holes matched with the steel pipe piles are formed in the first-stage prefabricated bottom plate;
the cast-in-place part is provided with a second-stage cast-in-place bearing platform which is formed in the bowl-shaped structure in a pouring mode, and a plurality of anchor bolts used for connecting the tower barrel are fixed on the second-stage cast-in-place bearing platform.
The prefabricated part also comprises a bearing platform steel bar structure which is arranged in the bowl-shaped structure and connected with steel bars in the prefabricated side plate.
The bearing platform steel bar structure comprises a plurality of horizontal steel bar layers connected with steel bars in the first-stage prefabricated side plate and a plurality of steel bar cages corresponding to the reserved holes and connected with the horizontal steel bar layers.
The contact surfaces of the first-stage prefabricated bottom plate, the first-stage prefabricated side plates and the second-stage cast-in-place bearing platform are concave-convex surfaces.
A plurality of horizontal dowel bars are arranged on the contact surface of the first-stage prefabricated side plate and the second-stage cast-in-place bearing platform; and a plurality of inverted U-shaped connecting reinforcing steel bars are arranged on the contact surface of the first-stage prefabricated base plate and the second-stage cast-in-place bearing platform.
The utility model has the beneficial effects that: the offshore high-rise pile cap is divided into a prefabricated part and a cast-in-place part, so that more than 70% of work can be finished on land, the work of binding and overlapping the offshore steel bars is avoided, the process of erecting a template and a formwork of the offshore pile cap is cancelled, the partial prefabrication of the high-rise pile cap is realized, and the offshore construction operation time is reduced; according to the utility model, the second-stage cast-in-place bearing platform only needs to be poured in the prefabricated bowl-shaped structure during offshore construction, the construction is convenient, the quality of the concrete bearing platform is ensured, the first-stage concrete and the second-stage concrete form a whole, and the quality problems of the first-stage concrete and the steel pipe pile, such as poor connection and the like, which cause the problems of sinking, cracking and the like of the first-stage concrete are avoided.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Fig. 2 is a schematic plan view of the embodiment.
1. Prefabricating a bottom plate in the first period; 2. steel pipe piles; 3. second-stage cast-in-place bearing platform; 4. prefabricating a side plate in the first stage; 5. a bearing platform steel bar structure; 6. an anchor bolt; 7. a tower drum; 8. a concave-convex surface; 9. horizontally inserting ribs; 10. and connecting the reinforcing steel bars.
Detailed Description
The embodiment is an offshore high pile cap for connecting a tower cylinder and a steel pipe pile, and the offshore high pile cap comprises a prefabricated part prefabricated on the road and a cast-in-place part constructed on the sea.
The prefabricated part comprises a prefabricated bottom plate and a circle of prefabricated side plates, wherein the prefabricated side plates are formed on the upper edge of the prefabricated bottom plate, and the prefabricated bottom plate and the prefabricated side plates form a bowl-shaped structure. In this embodiment, a plurality of reserved holes adapted to the steel pipe piles are formed in the first-stage prefabricated base plate, and the steel pipe piles can be inserted into the bowl-shaped structures through the reserved holes.
In this embodiment, the prefabricated part further includes a bearing platform steel bar structure located in the bowl-shaped structure, and the bearing platform steel bar structure includes a plurality of horizontal steel bar layers connected to the steel bars in the prefabricated side plates in the first period, and a plurality of steel bar cages corresponding to the reserved holes and connected to the horizontal steel bar layers.
In this embodiment, the cast-in-place part has a second-stage cast-in-place bearing platform formed in a bowl-shaped structure in a pouring manner, and a plurality of anchor bolts for connecting a tower cylinder are fixed on the second-stage cast-in-place bearing platform.
In this embodiment, the lower end of the anchor bolt is connected with the first-stage prefabricated base plate through the connecting piece, and the upper end of the anchor bolt is exposed out of the top surface of the second-stage cast-in-place bearing platform.
In order to enhance the connection between the first-stage and second-stage concretes, the contact surfaces of the first-stage prefabricated bottom plate and the first-stage prefabricated side plate and the second-stage cast-in-place bearing platform are concave-convex surfaces. A plurality of horizontal dowel bars are arranged on the contact surface of the first-stage prefabricated side plate and the second-stage cast-in-place bearing platform so as to enhance the connection between the first-stage prefabricated side plate and the second-stage cast-in-place bearing platform; a plurality of inverted U-shaped connecting reinforcing steel bars are arranged on the contact surface of the first-stage prefabricated base plate and the second-stage cast-in-place bearing platform, and the connecting reinforcing steel bars are connected with reinforcing steel bars in the base plate so as to enhance the connection between the first-stage prefabricated base plate and the second-stage cast-in-place bearing platform.
In this embodiment, the first-stage prefabricated bottom plate and the first-stage prefabricated side plate are prefabricated on land, and the reinforcing steel bars in the first-stage concrete and the second-stage concrete, the anchor bolts connected with the tower barrel and the like are installed on land and then transported to the site.
The above-mentioned embodiments are only used for explaining the inventive concept of the present invention, and not for limiting the protection of the claims of the present invention, and all the insubstantial modifications of the present invention using this concept shall fall within the protection scope of the present invention.

Claims (5)

1. The utility model provides a partially prefabricated marine high pile cushion cap for connect a tower section of thick bamboo and steel-pipe pile, its characterized in that: the offshore high pile cap is divided into a prefabricated part and a cast-in-place part;
the prefabricated part comprises a first-stage prefabricated bottom plate and a circle of first-stage prefabricated side plates which are manufactured on the upper edge of the first-stage prefabricated bottom plate, the first-stage prefabricated bottom plate and the first-stage prefabricated side plates are enclosed into a bowl-shaped structure, and a plurality of reserved holes matched with the steel pipe piles are formed in the first-stage prefabricated bottom plate;
the cast-in-place part is provided with a second-stage cast-in-place bearing platform which is formed in the bowl-shaped structure in a pouring mode, and a plurality of anchor bolts used for connecting the tower barrel are fixed on the second-stage cast-in-place bearing platform.
2. The partially prefabricated offshore high pile cap of claim 1, wherein: the prefabricated part also comprises a bearing platform steel bar structure which is arranged in the bowl-shaped structure and connected with steel bars in the prefabricated side plate.
3. The partially prefabricated offshore high pile cap of claim 2, wherein: the bearing platform steel bar structure comprises a plurality of horizontal steel bar layers connected with steel bars in the first-stage prefabricated side plate and a plurality of steel bar cages corresponding to the reserved holes and connected with the horizontal steel bar layers.
4. The partially prefabricated offshore high pile cap of claim 1, wherein: the contact surfaces of the first-stage prefabricated bottom plate, the first-stage prefabricated side plates and the second-stage cast-in-place bearing platform are concave-convex surfaces.
5. The partially prefabricated offshore high pile cap of claim 1 or 4, wherein: a plurality of horizontal dowel bars are arranged on the contact surface of the first-stage prefabricated side plate and the second-stage cast-in-place bearing platform; and a plurality of inverted U-shaped connecting reinforcing steel bars are arranged on the contact surface of the first-stage prefabricated base plate and the second-stage cast-in-place bearing platform.
CN202121551144.8U 2021-07-08 2021-07-08 Partially prefabricated offshore high pile cap Active CN215715494U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121551144.8U CN215715494U (en) 2021-07-08 2021-07-08 Partially prefabricated offshore high pile cap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121551144.8U CN215715494U (en) 2021-07-08 2021-07-08 Partially prefabricated offshore high pile cap

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CN215715494U true CN215715494U (en) 2022-02-01

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114703762A (en) * 2022-05-16 2022-07-05 四川公路桥梁建设集团有限公司 Foundation construction method of steel-concrete composite beam
CN114753397A (en) * 2022-04-15 2022-07-15 广东博嘉拓建筑科技有限公司 Prefabricated assembly type bearing platform shell and construction method thereof
CN114892698A (en) * 2022-06-13 2022-08-12 中交第二航务工程局有限公司 Assembly type template for asymmetric double-inclined-pile cast-in-place bearing platform and construction method
CN115233722A (en) * 2022-09-05 2022-10-25 中国长江三峡集团有限公司 Offshore high pile cap foundation and construction method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114753397A (en) * 2022-04-15 2022-07-15 广东博嘉拓建筑科技有限公司 Prefabricated assembly type bearing platform shell and construction method thereof
CN114703762A (en) * 2022-05-16 2022-07-05 四川公路桥梁建设集团有限公司 Foundation construction method of steel-concrete composite beam
CN114892698A (en) * 2022-06-13 2022-08-12 中交第二航务工程局有限公司 Assembly type template for asymmetric double-inclined-pile cast-in-place bearing platform and construction method
CN115233722A (en) * 2022-09-05 2022-10-25 中国长江三峡集团有限公司 Offshore high pile cap foundation and construction method thereof

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