Construction method of offshore deeply-buried weathered rock stratum non-drainage cofferdam

A construction method and technology of cofferdams, which are applied in the direction of foundation structure engineering, buildings, sheet pile walls, etc., can solve problems such as slow construction speed and large engineering volume

Pending Publication Date: 2022-04-29
CHINA CONSTR ENG HONG KONG
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to propose a construction method for non-drainage cofferdams buried deep in weathered rock formations in the sea, aiming to solve the problems of large engineering volume and slow construction speed in the construction of drainage cofferdams in the sea to recover the head of tunnel boring machines

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  • Construction method of offshore deeply-buried weathered rock stratum non-drainage cofferdam
  • Construction method of offshore deeply-buried weathered rock stratum non-drainage cofferdam
  • Construction method of offshore deeply-buried weathered rock stratum non-drainage cofferdam

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Embodiment Construction

[0055] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0056] The present invention proposes an undrained cofferdam buried deep in weathered rock strata in the sea, figure 1 An embodiment of the undrained cofferdam of deep-buried weathered rock strata in the offshore provided by the present invention,

[0057] refer to figure 1 , in this embodiment, the undrained cofferdam of deep-buried weathered rock formations in the sea includes a cofferdam main body 1, a support frame structure 2 and a plurality of flashboards 3, and the cofferdam main body 1 includes a plurality of steel pipe piles arranged in a ring 11. Two adjacent steel pipe piles 11 are arranged at intervals, and each of the steel pipe piles 11 extends vertically; the supporting frame structure 2 is supported inside the cofferdam main body 1; the multiple Each gate 3 is arranged between two adjacent steel pipe...

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Abstract

The invention discloses a construction method of an offshore deeply-buried weathered rock stratum undrained cofferdam, which comprises the following steps of: inserting and driving a plurality of steel pipe piles which are annularly arranged to form a cofferdam main body; a supporting frame structure is installed on the inner side of the cofferdam body at a time; a gate plate is installed between every two adjacent steel pipe piles; sea mud in the cofferdam main body is excavated for multiple times, and a supporting frame structure is installed on the inner side of the cofferdam main body in a matched mode for multiple times; finally, the sea mud in the cofferdam body is excavated to the final preset position of the sea mud; and a concrete cushion layer is poured to the bottom of the cofferdam body, so that the non-drainage cofferdam is formed. The construction method of the offshore deeply-buried weathered rock stratum non-drainage cofferdam is used for building the offshore deeply-buried weathered rock stratum non-drainage cofferdam, so that a machine head of a tunnel boring machine is recycled in water, and the offshore deeply-buried weathered rock stratum non-drainage cofferdam is small in work amount, high in construction speed and low in comprehensive building cost.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for an undrained cofferdam buried deep in weathered rock formations in the offshore. Background technique [0002] Cofferdam refers to the temporary enclosure structure built for the construction of permanent water conservancy facilities in the construction of water conservancy projects. , build buildings. Common types of cofferdam include: steel sheet pile cofferdam, steel pipe pile cofferdam, steel box cofferdam and concrete cofferdam, etc. Building drainage cofferdams in the sea is costly and has great safety risks. Building non-drainage cofferdams in weathered rock formations on the seabed and recycling the nose of tunnel boring machines requires less engineering, faster construction, and lower overall costs. Contents of the invention [0003] The main purpose of the present invention is to propose a construction method for non-drainage...

Claims

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Application Information

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IPC IPC(8): E02D19/04E02D5/28E02D7/02E02D5/52
CPCE02D19/04E02D5/285E02D7/02E02D5/526E02D2300/0029E02D2600/20
Inventor 张保平贾德登王基业
Owner CHINA CONSTR ENG HONG KONG
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