An assembled offshore wind power construction platform

Abstract

The utility model relates to an assembly type offshore wind power construction platform, including platform base structure and platform upper structure, platform base structure includes 4 steel pipe piles, and four steel pipe piles are inserted and are beaten in the sea according to the four vertices of rectangle, and multiple corbels are welded equidistance at a certain height on each steel pipe pile, and platform upper structure includes four steel casings arranged according to the four vertices of rectangle, and the steel truss is respectively welded along the transverse and longitudinal direction between four steel casings, and multiple distribution beams are welded on the steel truss, and platform panel is welded on the distribution beam, the upper end of four steel pipe piles is inserted into four steel casings respectively, and the lower end of four steel casings is supported on the corbel on four steel pipe piles respectively, the utility model can weld platform upper structure into a whole on land, and platform upper structure is inserted and is installed on the steel pipe pile by using the floating crane, and the on -the -spot welding amount is small, and the installation and dismounting speed is fast.

Description

Technical Field

[0001] This utility model belongs to the technical field of offshore construction platforms, specifically relating to a prefabricated offshore wind power construction platform. Background Technology

[0002] When constructing an offshore wind power platform, four steel pipe piles arranged at the four vertices of a rectangle are typically driven into the sea first. Then, trusses are welded between the upper ends of the steel pipe piles, distribution beams are welded between the trusses, and platform panels are welded onto the distribution beams. The on-site welding work is extensive, and the quality of welding on the water is difficult to guarantee, resulting in low construction efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a prefabricated offshore wind power construction platform that reduces on-site welding and improves construction efficiency.

[0004] The technical solution of this utility model is as follows:

[0005] A prefabricated offshore wind power construction platform is characterized by comprising a platform foundation structure and a platform superstructure. The platform foundation structure includes four steel pipe piles, which are driven into the sea at the four vertices of a rectangle. Multiple corbels are welded circumferentially at a certain height on each steel pipe pile. The platform superstructure includes four steel sleeves arranged at the four vertices of a rectangle. Steel trusses are welded between the four steel sleeves in both the transverse and longitudinal directions. Multiple distribution beams are welded on the steel trusses, and platform panels are welded on the distribution beams. The upper ends of the four steel pipe piles are respectively inserted into the four steel sleeves, and the lower ends of the four steel sleeves are respectively supported on the corbels on the four steel pipe piles.

[0006] This invention welds the upper structure of the platform into a whole on land, which helps to ensure welding quality. During platform installation, a floating crane is used at sea to insert the upper structure of the platform onto the steel pipe piles. When the platform is dismantled, the upper structure of the platform is lifted off as a whole. The amount of on-site welding is small and the installation and dismantling speed is fast. Attached Figure Description

[0007] Figure 1 This is a side view of the present invention;

[0008] Figure 2 This is a longitudinal side view of the present invention;

[0009] Figure 3 yes Figure 1 Enlarged view of point A in the middle. Detailed Implementation

[0010] like Figure 1 , Figure 2 , Figure 3As shown, this utility model includes a platform foundation structure and a platform superstructure. The platform foundation structure includes four steel pipe piles 1, which are driven into the sea at the four vertices of a rectangle. Multiple corbels 2 are welded circumferentially at a certain height on each steel pipe pile. The platform superstructure includes four steel sleeves 3 arranged at the four vertices of a rectangle. Steel trusses 4 are welded between the four steel sleeves in the transverse and longitudinal directions, and multiple distribution beams 5 are welded on the steel trusses. Platform panels 6 are welded on the distribution beams. The upper ends of the four steel pipe piles 1 are respectively inserted into the four steel sleeves 3, and the lower ends of the four steel sleeves 3 are respectively supported on the corbels 2 on the four steel pipe piles.

[0011] In the above structure, the corbel 2 on the steel pipe pile 1 provides support for the upper structure of the platform and transfers the load of the upper structure of the platform to the steel pipe pile, which in turn transfers the load to the seabed, thus ensuring the bearing capacity of the platform.

[0012] In a specific implementation of this utility model, in order to avoid excessive force concentration at the lower end of the steel sleeve, multiple strip-shaped through holes 7 can be opened on the wall of each steel sleeve along the longitudinal direction of the steel sleeve. The multiple strip-shaped through holes are equidistantly arranged in the circumferential direction on the steel sleeve. An auxiliary support steel plate 8 is arranged in each strip-shaped through hole along the longitudinal direction of the strip-shaped through hole. One side of the auxiliary support steel plate 8 is welded to the steel pipe pile 1 inside the steel sleeve, and the upper end of the auxiliary support steel plate 8 is supported on the upper end of the strip-shaped through hole 7.

[0013] In the above structure, the auxiliary support steel plate, together with the bracket, can provide support for the steel casing and the upper structure of the platform.

[0014] Furthermore, in order to ensure that the steel sleeve is subjected to uniform stress, the multiple strip-shaped through holes 7 on each steel sleeve 3 can be divided into upper and lower layers, with the upper and lower layers of strip-shaped through holes being staggered.

[0015] The construction method of this utility model is as follows:

[0016] At the designed location of the offshore wind power platform, four steel pipe piles, serving as the platform's foundation structure, are driven into place. The upper end of each steel pipe pile is positioned above the water level, and multiple corbels are welded circumferentially onto the piles. The platform's superstructure is pre-welded as a whole on land, with multiple slotted holes pre-drilled in each steel sleeve. The superstructure is transported to the platform construction site by a ship, and then lifted as a whole onto the steel pipe piles using a floating crane. The four steel sleeves are then fitted onto the four steel pipe piles, one above the other, until the lower end of the sleeves rests on the corbels on the piles, thus completing the platform installation. Further, auxiliary support steel plates can be welded into each slotted hole in the steel sleeves to provide additional support for the platform's superstructure, preventing excessive stress concentration at the lower end of the sleeves and ensuring the platform's load-bearing capacity.

Claims

1. A prefabricated offshore wind power construction platform, characterized in that: The platform includes a foundation structure and a superstructure. The foundation structure consists of four steel pipe piles driven into the sea at the four vertices of a rectangle. Multiple corbels are welded circumferentially at a certain height on each steel pipe pile. The superstructure consists of four steel sleeves arranged at the four vertices of a rectangle. Steel trusses are welded between the four steel sleeves in both the transverse and longitudinal directions. Multiple distribution beams are welded onto the steel trusses, and platform panels are welded onto the distribution beams. The upper ends of the four steel pipe piles are inserted into the four steel sleeves, and the lower ends of the four steel sleeves are supported on the corbels on the four steel pipe piles.

2. The prefabricated offshore wind power construction platform according to claim 1, characterized in that: Multiple strip-shaped through holes are opened along the longitudinal direction of the steel casing on the pipe wall of each steel casing. The multiple strip-shaped through holes are equidistantly arranged in the circumferential direction on the steel casing. An auxiliary support steel plate is arranged along the longitudinal direction of each strip-shaped through hole. One side of the auxiliary support steel plate is welded to the steel pipe pile inside the steel casing, and the upper end of the auxiliary support steel plate is supported on the upper end of the strip-shaped through hole.

3. The prefabricated offshore wind power construction platform according to claim 2, characterized in that: The multiple strip-shaped through holes on each steel casing are arranged in two layers, with the upper and lower layers of strip-shaped through holes staggered.

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