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Cavity subdivided type offshore infrastructure and construction method thereof

A basic structure and cavity technology, applied in basic structure engineering, construction, sheet pile wall, etc., can solve the problems of increasing the diameter or wall thickness of the pile foundation, poor geological properties of shallow surface soil, poor physical and mechanical properties, etc. The effect of improving stress characteristics, short construction period and low cost

Pending Publication Date: 2017-07-14
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of my country's offshore wind power and other fields, construction companies have successively purchased large-scale hydraulic piling hammers from the Netherlands and Germany, which can test steel pipe piles with a diameter of 4-7m. Distributed with silt, muddy soil, newly deposited silt, etc., with poor physical and mechanical properties
The characteristics of marine pile foundations have different characteristics such as vertical load, horizontal load or combined load. For small horizontal displacement, it is necessary to excessively increase the diameter or wall thickness of the pile foundation, resulting in huge waste of cost

Method used

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  • Cavity subdivided type offshore infrastructure and construction method thereof
  • Cavity subdivided type offshore infrastructure and construction method thereof
  • Cavity subdivided type offshore infrastructure and construction method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0036] Embodiment 1: as figure 1 , figure 2 As shown, this embodiment is a cavity subdivided marine foundation structure, which is composed of steel pipe foundation piles 1 and a cavity structure, and is suitable for 6MW offshore wind turbines.

[0037] Such as image 3 Figure 4 As shown, steel pipe foundation pile 1 has a diameter of 4m and a single weight of 400t. Starting from 3m below the top of the pile, four slides 2 are evenly arranged on the side of the steel pipe foundation pile along the axial direction of the steel pipe foundation pile. The slides 2 are made of thick steel plates. The top of the slideway is arc-shaped. In this example, the steel pipe foundation pile 1 and the slideway 2 are welded in the factory.

[0038] Figure 5 , Image 6 It is a schematic diagram of the cavity structure in this embodiment. The cavity structure has a circular tubular inner bulkhead 3 and a circular tubular outer bulkhead 5, wherein the diameter of the inner bulkhead 3 is ...

Embodiment 2

[0045] Embodiment 2: as Figure 7 , Figure 8 As shown, the present embodiment consists of two parts, the steel pipe foundation pile 1 and the cavity structure.

[0046] Steel pipe foundation pile 1 has a diameter of 4m and a single weight of 400t. Starting from 3m below the pile top, four slides 2 are evenly arranged on the side of the steel pipe foundation pile along the axial direction of the steel pipe foundation pile. The slides 2 are made of thick steel plates. The top of the slideway is arc-shaped. In this example, the steel pipe foundation pile 1 and the slideway 2 are welded in the factory.

[0047] In this embodiment, the cavity structure has a circular tubular inner bulkhead 3 and a circular tubular outer bulkhead 5, and an annular top bulkhead 6, and the center of the top bulkhead 6 has a hole that matches the size of the inner bulkhead 3. hole. Among them, the diameter of the inner bulkhead 3 is 4.01m (slightly larger than the diameter of the steel pipe foundat...

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Abstract

The invention relates to a cavity subdivided type offshore infrastructure and a construction method thereof and aims to provide the cavity subdivided type offshore infrastructure which is simple in structure, convenient to construct and low in cost and the construction method thereof so that horizontal displacement can be reduced. According to the technical scheme, the cavity subdivided type offshore infrastructure is characterized in that the cavity subdivided type offshore infrastructure comprises a steel tube foundation pile and a cavity structure mounted on the steel tube foundation pile in a sleeving mode; the cavity structure is provided with an inner subdivision wall, an outer subdivision wall and partition subdivision walls; the inner subdivision wall is in a round tube shape, the inner wall of the inner subdivision wall is matched with the outer diameter of the steel tube foundation pile, and a gap is reserved between the inner subdivision wall and the steel tube foundation pile; the inner subdivision wall is sleeved with the outer subdivision wall coaxially; and the inner subdivision wall and the outer subdivision wall are connected through the multiple evenly distributed partition subdivision walls between the inner subdivision wall and the outer subdivision wall. The cavity subdivided type offshore infrastructure is suitable for infrastructures of the industries of offshore wind power, offshore platforms and port water transport and belongs to the technical fields of foundation infrastructures and construction.

Description

technical field [0001] The invention relates to a cavity subdivided marine foundation structure and a construction method thereof. The basic structure applicable to offshore wind power, offshore platforms, and port water transportation industries belongs to the field of foundation infrastructure and construction technology. Background technique [0002] With the rapid development of my country's offshore wind power and other fields, construction companies have successively purchased large-scale hydraulic piling hammers from the Netherlands and Germany, which can test steel pipe piles with a diameter of 4-7m. There are silt, muddy soil, newly deposited silt, etc., with poor physical and mechanical properties. The characteristics of marine pile foundations have different characteristics such as vertical load, horizontal load or combined load. Small horizontal displacement requires excessively increasing the diameter or wall thickness of the pile foundation, resulting in huge ...

Claims

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Application Information

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IPC IPC(8): E02D27/52E02D27/42E02D27/24E02D27/12E02D5/28E02D15/08
CPCE02D5/285E02D15/08E02D27/12E02D27/24E02D27/42E02D27/425E02D27/52E02D27/525E02D2200/1607E02D2200/165E02D2300/0029
Inventor 姜贞强郇彩云戚海峰夏艳慧赵朝志李青
Owner POWERCHINA HUADONG ENG COPORATION LTD
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