Construction method of underwater pipe pile foundation and underwater pipe pile foundation

A construction method and technology of pipe piles, applied in foundation structure engineering, sheet pile walls, buildings, etc., can solve problems such as weak enhancement of the bearing capacity of pipe pile foundations, achieve enhanced horizontal resistance and vertical bearing capacity, and lift resistance The ability to shift horizontally and the effect of reducing the risk of leaning to one side

Active Publication Date: 2022-06-21
CHINA THREE GORGES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the underwater pipe pile foundation in the prior art adopts the post-grouting construction method to enhance the bearing capacity of the completed pipe pile foundation, thereby providing an underwater pipe pile foundation. Construction method of pile foundation and underwater pipe pile foundation

Method used

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  • Construction method of underwater pipe pile foundation and underwater pipe pile foundation
  • Construction method of underwater pipe pile foundation and underwater pipe pile foundation
  • Construction method of underwater pipe pile foundation and underwater pipe pile foundation

Examples

Experimental program
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Effect test

Embodiment 1

[0041] like Figure 1 to Figure 6 As shown, the present embodiment provides a construction method for an underwater pipe pile foundation, which is suitable for constructing a pipe pile foundation in water bodies such as rivers, rivers, lakes, and seas, and includes the following steps:

[0042] A construction interlayer 20 is arranged on the side wall of the pipe pile body 3 along the axial direction, and four construction interlayers 20 are arranged at intervals along the circumferential direction of the pipe pile body 3 . A plurality of construction openings 17 are arranged in the axial direction on the side of the construction interlayer 20 away from the inner cavity of the pipe pile body 3 , and the construction openings 17 are covered by a high-strength plastic plate 2 as a blocking plate. In this embodiment, holes are firstly spaced along the length direction on the web plate of the channel steel 1 as construction openings 17, and the high-strength plastic plate 2 is fix...

Embodiment 2

[0051] This embodiment provides an underwater pipe pile foundation, which is constructed by applying the construction method of the underwater pipe pile foundation described in Embodiment 1.

[0052] The bottom of the underwater pipe pile foundation extends into the soil, including: the pipe pile body and the soil cavity. The soil cavity is formed in the soil around the pipe pile body, the soil cavity is filled with a cement structure, and the cement structure is connected with the pipe pile body. It also includes a plurality of pile-side pulp veins, extending divergently from the soil cavity toward the direction away from the pipe pile body, and the pile-side pulp veins are integrally connected with the cement structure. By extending the side grout veins from the cement structure body, the resistance of the overall movement of the cement structure body is increased, the settlement of the cement structure body is prevented, the cement structure body can be stably connected aro...

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Abstract

The invention relates to the technical field of underwater pipe pile foundations, in particular to a construction method of an underwater pipe pile foundation and the underwater pipe pile foundation. The construction method of the underwater pipe pile foundation comprises the following steps: a construction interlayer is arranged axially on the side wall of the pipe pile body, a plurality of construction openings are arranged axially on the side of the construction interlayer away from the inner cavity of the pipe pile body, The blocking plate covers the construction opening; the pipe pile body is hoisted at the pre-construction position and the pile is sunk, so that the pipe pile body is sunk to the predetermined elevation; blasting devices are arranged and detonated at multiple construction openings along the construction interlayer to Multiple soil cavities outside the pile are formed; cement slurry is injected into the soil cavities through the construction opening along the construction interlayer through high pressure, and the construction is completed. By first blasting the soil around the side of the pipe pile body, and then injecting high-pressure grouting into the formed soil cavity, the horizontal resistance of the pile side soil and the vertical bearing capacity of the pile-soil interface can be effectively enhanced , to reduce the risk of the pile foundation tilting to one side.

Description

technical field [0001] The invention relates to the technical field of underwater pipe pile foundations, in particular to a construction method of an underwater pipe pile type foundation and an underwater pipe pile type foundation. Background technique [0002] With the development of offshore wind power to the deep sea, in order to make more effective use of offshore wind resources and improve power generation efficiency, large-megawatt wind turbine units are gradually being developed and applied. The bearing capacity of the fan will increase, otherwise the fan will fall over and other problems after installation, which will affect the smooth operation of the fan. The demand for bearing capacity can be achieved by increasing the size of the offshore wind power pile foundation, but this will undoubtedly greatly increase the production and transportation costs of the pipe pile foundation. [0003] In order to reduce the cost of equipment, the pile foundation construction met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/38E02D5/62E02D5/66
CPCE02D27/525E02D27/50E02D15/08E02D15/06E02D15/04E02D7/28E02D13/08E02D5/285E02D5/62
Inventor 于光明陈美合王卫张泽超代加林罗仑博祝文龙李洲刘开源
Owner CHINA THREE GORGES CORPORATION
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