A jack-up platform leg and spud

Abstract

The application relates to a self-elevating platform pile leg and pile shoe, which comprises a female pile shoe, a male pile shoe, a pile leg and spring sheets, the lower part of the pile leg is provided with the male pile shoe, the female pile shoe is sleeved outside the male pile shoe, and the male pile shoe and the female pile shoe are connected through the spring sheets. The self-elevating platform pile leg and pile shoe provided by the application realize the application of the composite pile shoe, require less active mechanism and transmission mechanism, have low failure rate, the pile shoe and the pile leg are well nested, the female pile shoe can freely rotate around the pile leg device, and the acting load of the pile shoe on the pile leg is low.

Description

TECHNICAL FIELD

[0001] The present application relates to a self-elevating offshore wind power installation platform, and belongs to the technical field of ship and ocean engineering, in particular to a self-elevating platform pile leg and pile shoe. BACKGROUND

[0002] Generally, the self-elevating platform needs to discharge mud during migration, then lift the pile leg, and then put down the pile leg and discharge mud with the pile shoe after migration.

[0003] Since the composite pile shoe has a child pile shoe and a parent pile shoe, and the pile leg generally directly penetrates the parent pile shoe, the parent pile shoe must be specially designed for the pile leg to move. Since the self-elevating platform generally operates in a 300-meter water depth environment, the pile leg near the pile shoe position generally bears a large self-weight load, so the pile leg should avoid being holed to prevent excessive local stress. At this time, the parent pile shoe in the composite pile shoe needs to move on the complete pile leg, and a matching pile leg-pile shoe form must be designed. However, the existing self-elevating platform composite pile shoe has the problems of stress concentration leading to damage due to pile leg holed, and the parent pile shoe cannot work due to no holed. SUMMARY

[0004] In order to solve the problems of excessive pile driving load and unstable pile foundation of the self-elevating platform, based on the foregoing scheme with the composite pile shoe, the present application provides a self-elevating platform pile leg and pile shoe.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows: a self-elevating platform pile leg and pile shoe, comprising a parent pile shoe, a child pile shoe, a pile leg, and a spring sheet, the pile leg is provided with the child pile shoe at the lower part, and the parent pile shoe is sleeved outside, and the child pile shoe and the parent pile shoe are connected through the spring sheet.

[0006] Further, the inner wall of the parent pile shoe adopts a Leiluo triangle form, so as to freely rotate around the pile leg, and due to the wind vane effect, it can always be in the most optimized direction in the ocean current environment, avoiding the structure from being damaged by bearing a large ocean current force, and also avoiding the parent pile shoe from being squeezed to the pile leg and being damaged.

[0007] Further, the parent pile shoe has an opening penetrating up and down inside, and the opening is in the form of a Leiluo triangle.

[0008] Further, the pile leg is directly connected to the child pile shoe.

[0009] Further, the parent pile shoe has no reinforcing structure inside, and the buoyancy in water is much greater than the self-weight.

[0010] Further, the sub pile shoe and the female pile shoe are provided with winding wheel devices, and the spring sheets are controlled according to actual needs.

[0011] Further, the plurality of winding wheel devices are respectively distributed on the sub pile shoe and the female pile shoe, and the spring sheets are connected to the sub pile shoe and the female pile shoe through the corresponding winding wheel devices.

[0012] Further, the pile leg adopts a truss structure.

[0013] Further, after the sub pile shoe touches the bottom, the spring sheet on the female pile shoe is in a relaxed state, at this time, the female pile shoe starts to float due to the buoyancy, until the spring sheet is stretched to the limit position.

[0014] Further, when the sub pile shoe is separated from the ground, the spring sheet is in a tight state, at this time, the female pile shoe is pulled back to the original position by the spring sheet.

[0015] The beneficial effects of the present application are:

[0016] The pile leg and the pile shoe of the self-elevating platform provided by the present application realize the application of the composite pile shoe, require less active mechanism and transmission mechanism, have low failure rate, meanwhile, the pile shoe and the pile leg are well nested, the female pile shoe can freely rotate around the pile leg device, and the horizontal load of the ocean environment on the pile leg is low. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structure and working schematic diagram of a female pile shoe of a self-elevating platform;

[0018] Figure 2 Fig. 2 is a top view of the female pile shoe;

[0019] Figure 3 Fig. 3 is a bottom view of the female pile shoe;

[0020] In the figure: 1 is a female pile shoe, 2 is a sub pile shoe, 3 is a truss pile leg, 4 is a spring sheet, 11 is an outer wall of the female pile shoe, 12 is an inner wall of the female pile shoe, 21 is an outer shell of the female pile shoe, and 22 is an outer shell of the sub pile shoe. DETAILED DESCRIPTION

[0021] The present application will be further described below in combination with the drawings and embodiments.

[0022] As Figure 1As shown, a self-elevating platform's pile legs and pile shoes include a mother pile shoe 1, a daughter pile shoe 2, a truss-type pile leg 3, and spring plates 4. The daughter pile shoe 2 is sleeved at the lower part of the truss-type pile leg 3, and the mother pile shoe 1 is sleeved on the outside. The daughter pile shoe 2 and the mother pile shoe 1 are connected by spring plates 4. Both the daughter pile shoe 3 and the mother pile shoe 1 are equipped with roller devices for controlling the spring plates. Multiple roller devices are evenly distributed on the daughter pile shoe 3 and the mother pile shoe 1, and the spring plates 4 are connected to the daughter pile shoe 3 and the mother pile shoe 1 through corresponding roller devices.

[0023] The main working principle is that after the secondary pile shoe 2 touches the bottom, the spring plate 4 on the primary pile shoe 1 is released. At this time, the primary pile shoe 1 begins to float due to buoyancy until the spring plate 4 is stretched to its limit. When the secondary pile shoe 2 leaves the ground, the spring plate 4 is initially in a compressed state, and the primary pile shoe 1 is pulled back to its original position by the spring plate 4.

[0024] like Figure 2 As shown, the inner wall 12 of the mother pile shoe 1 adopts a Reichstag triangle shape, allowing it to rotate freely around the pile leg. In the ocean, due to the weathervane effect, it can always keep the stress on the mother pile shoe and the pile leg in an optimal state, avoiding severe local compression between the mother pile shoe and the pile leg that could cause structural damage. The mother pile shoe 1 has a vertically penetrating opening inside, and the opening is in the shape of a Reichstag triangle.

[0025] like Figure 3 As shown, the mother pile shoe 1 has a mother pile shoe outer shell 21 and a pile shoe inner shell 22, and the truss-type pile legs 3 are directly connected to the daughter pile shoe 2. The mother pile shoe 1 has no internal reinforcing structure, and its buoyancy in water is much greater than its own weight.

Claims

1. A self-elevating platform pile leg and pile shoe, characterized in that: The system includes a mother pile shoe, a daughter pile shoe, a pile leg, and a spring plate. The daughter pile shoe is attached to the lower part of the pile leg, and the mother pile shoe is sleeved on the outside. The daughter pile shoe and the mother pile shoe are connected by a spring plate. After the daughter pile shoe touches the bottom, the spring plate on the mother pile shoe is released. At this time, the mother pile shoe begins to float due to buoyancy until the spring plate is stretched to its limit position. When the daughter pile shoe leaves the ground, the spring plate is initially in a compressed state, and the mother pile shoe is pulled back to its original position by the spring plate.

2. The self-elevating platform leg and pile shoe according to claim 1, characterized in that: The inner wall of the mother pile shoe adopts a Leroy triangle shape, which allows it to rotate freely around the pile leg. In the ocean current environment, due to the wind vane effect, it can always be in the optimal orientation, avoiding the structure from being damaged by large ocean current forces. At the same time, it can also prevent the mother pile shoe from being squeezed to the pile leg and causing damage.

3. The self-elevating platform pile leg and pile shoe according to claim 1, characterized in that: The mother pile boot has a through opening that runs vertically through the interior, and the opening is in the shape of a Reilly triangle.

4. The self-elevating platform leg and pile shoe according to claim 1, characterized in that: The pile leg is directly connected to the sub-pile shoe.

5. The self-elevating platform leg and pile shoe according to claim 1, characterized in that: The mother pile shoe has no internal reinforcement structure, and its buoyancy in water is much greater than its own weight.

6. The self-elevating platform leg and pile shoe according to claim 1, characterized in that: Both the sub-pile shoe and the mother pile shoe are equipped with a roller device, which controls the spring plate according to actual needs.

7. The self-elevating platform leg and pile shoe according to claim 6, characterized in that: Multiple roller devices are respectively and evenly distributed on the sub-pile shoe and the mother pile shoe, and spring plates are connected to the sub-pile shoe and the mother pile shoe through corresponding roller devices.

8. The self-elevating platform leg and pile shoe according to claim 1, characterized in that: The pile legs adopt a truss structure.

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