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A Construction Method for Positioning and Guiding Structure of Deep Water Pile Foundation

A technology of guiding structure and construction method, applied in the direction of foundation structure engineering, sheet pile wall, construction, etc., can solve the problem that the influence of flowing water cannot be effectively eliminated, and achieve the effect of ensuring the hole position

Active Publication Date: 2017-06-06
CHINA GEZHOUBA GROUP NO 5 ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The influence of flowing water on the drilling of pile foundation cannot be effectively ruled out, such as the influence on verticality

Method used

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  • A Construction Method for Positioning and Guiding Structure of Deep Water Pile Foundation
  • A Construction Method for Positioning and Guiding Structure of Deep Water Pile Foundation

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Embodiment Construction

[0031] Such as Figure 1~2 Among them, a deep-water pile foundation positioning and guiding structure. An underwater positioning bracket 1 is fixed at the bottom of the water. A plurality of underwater guide pipes 2 are arranged on the underwater positioning bracket 1. A water surface positioning bracket 5 is fixed on the working water surface. The positioning bracket 5 is provided with a plurality of water surface guide pipes 7, and a plurality of steel casings 6 pass through the water surface guide pipes 7 and the underwater guide pipe 2;

[0032] A water surface drilling platform 13 is provided on the water surface positioning bracket 5 . With this structure, the verticality of the steel casing is ensured, so that the drill pipe can be reliably guided, thereby facilitating the drilling of deep-water pile foundations.

[0033] The water surface positioning bracket 5 is fixed by a guide boat 8 .

[0034] The underwater positioning bracket 1 is fixed by pouring concrete.

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Abstract

The invention provides a deepwater pile foundation positioning and guiding structure and a construction method. An underwater positioning support is fixedly arranged on a water bottom; a plurality of underwater guiding tubes are arranged on the underwater positioning support; a water surface positioning support is fixedly arranged on an operation water surface; a plurality of water surface guiding tubes are arranged on the water surface positioning support; a plurality of steel pile casings penetrate in the water surface guiding tubes and the underwater guiding tubes; and a water surface drilling platform is arranged on the water surface positioning support. The construction method comprises the following steps of flattening and cleaning a surface of a deepwater pile foundation during construction; sinking the underwater positioning support in place; pouring underwater fixing concrete to fix the underwater positioning support; positioning and fixing the water surface positioning support; mounting the water surface drilling platform; and mounting and positioning the steel pile casings. By the construction method, the water surface drilling platform and the steel pile casings are mounted. By the deepwater pile foundation positioning and guiding structure, the drilling precision and the pile position precision of deepwater bridge pile foundations of rivers and coastal waters can be improved, and influences of flowing water on drilling of the pile foundation are avoided.

Description

technical field [0001] The invention relates to the field of underwater construction of rivers and offshore bridges, in particular to a construction method for positioning and guiding structures of deep-water pile foundations. Background technique [0002] In the field of pile foundation construction of river and offshore deepwater bridges (30m, 50m deepwater or deeper pile foundations), how to realize the positioning and guiding of deepwater pile foundations has always been one of the difficulties in construction, which affects the drilling of bridge deepwater pile foundations, and Pile position accuracy. [0003] The existing construction process is: production of steel sheet piles and steel casings—floating tank assembly—floating crane assembly—water platform erection—steel casing driving—bored pile construction—hole cleaning—concrete Injection——Platform removal—Driving into steel sheet pile cofferdam—Pumping and dredging—Chiseling pile head—Pouring concrete back cover—C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/12E02D27/52E02D13/00E02D13/04
Inventor 周靖峰徐子微刘嫦罗丁周山
Owner CHINA GEZHOUBA GROUP NO 5 ENG
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