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Cast-in-place gravity-suction-type caisson foundation

A caisson foundation and suction technology, which is applied in infrastructure engineering, protection devices, buildings, etc., can solve problems that threaten the safety of the upper structure, large horizontal and vertical bearing capacity, etc., to ensure stability and improve pullout bearing capacity , The effect of improving engineering efficiency

Inactive Publication Date: 2020-01-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, under the influence of wind, waves, currents and other factors under the complex marine environment, as well as the long-term uplift load, the suction caisson foundation produces large horizontal and vertical bearing capacity and displacement, threatening the safety of the superstructure

Method used

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  • Cast-in-place gravity-suction-type caisson foundation
  • Cast-in-place gravity-suction-type caisson foundation

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: as figure 1 Shown: the diameter of the bucket compartment 2 is greater than the diameter of the suction caisson foundation 1 . The inside of the barrel cabin 2 can be used for pouring concrete weights 4 and also for riprap. When used for riprap, the top of the cover 3 is not provided with a connecting steel bar 12 . The bottom of the barrel compartment 2 is provided with a bottom plate 10; the bottom plate 10 is welded and fixed to the cover 3;

Embodiment 2

[0026] Embodiment 2: as figure 2 Shown: the diameter of the bucket compartment 2 is equal to the diameter of the suction caisson foundation 1 . The interior of the barrel compartment 2 can be used for pouring concrete weights 4 or for riprap, and when used for riprap, the top of the cover 3 is not provided with a connecting steel bar 12;

[0027] The construction sequence of the cast-in-situ gravity suction caisson foundation in the above embodiment: 1. The caisson sinks under negative pressure; 2. After the caisson is installed, concrete is poured underwater or rocks are poured underwater.

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Abstract

The invention discloses a cast-in-place gravity-suction-type caisson foundation which comprises a suction-type caisson foundation body and a barrel cabin fixed to the top of the suction-type caisson foundation body. An opening is formed in the lower end of the suction-type caisson foundation body, and a sealing cover is arranged at the upper end of the suction-type caisson foundation body. A steelcolumn, a drainage channel and a steel sleeve tube are arranged on the sealing cover, the drainage channel is arranged in the steel sleeve tube, one end of the drainage channel is in communication with the inner cavity of the suction-type caisson foundation body, and the other end of the drainage channel is connected with a connecting pipe in a communicating mode. A connecting steel bar and the sealing cover are welded and buried inside a concrete weight, an opening is formed in the top of the barrel cabin, a bottom plate is arranged at the bottom of the barrel cabin, and the bottom plate andthe sealing cover are fixed in welding and connecting modes. The vertical uplift bearing capacity of the suction-type caisson foundation body is greatly improved by using the self-weight of the concrete weight.

Description

Technical field: [0001] The invention belongs to the field of anchoring foundations for floating offshore platforms and offshore floating wind turbines, in particular to a cast-in-place gravity suction caisson foundation. Background technique: [0002] The suction caisson foundation is a common foundation form for offshore wind power foundations and offshore platforms. Since the shallow soil is mainly composed of silt and silt, and the soil quality is relatively poor, the bearing characteristics of the suction caisson foundation are greatly affected by the shallow soil. At the same time, under the influence of wind, waves, currents and other factors under the complex marine environment, as well as the long-term uplift load, the suction caisson foundation produces large horizontal and vertical bearing capacity and displacement, threatening the safety of the superstructure. Contents of the invention [0003] The purpose of the present invention is to provide a kind of cast-...

Claims

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Application Information

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IPC IPC(8): E02D27/18E02D27/42E02D31/12
CPCE02D27/18E02D27/425E02D31/12
Inventor 戴国亮朱文波龚维明竺明星万志辉
Owner SOUTHEAST UNIV
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