Steel pipe pile cofferdam structure of reservoir area in front of dam and construction method thereof

Abstract

The invention provides a steel pipe pile cofferdam structure of a reservoir area in front of a dam and a construction method thereof. The steel pipe pile cofferdam structure comprises a dam body, wherein a plurality of lock catch steel pipe piles are arranged on the side, close to a water area, of the dam body side by side, the plurality of lock catch steel pipe piles form a blocking face which is parallel to the side face, close to the water area, of the dam body, and every two adjacent lock catch steel pipe piles are connected in a clamped mode through a buckle structure; and the bottom ends of the lock catch steel pipe piles extend to the foundation bed rock face of the bottom of a reservoir, rock-socketed concrete piles are arranged in the lock catch steel pipe piles, and the bottom ends of the rock-socketed concrete piles extend to the foundation bed rock face of the bottom of the reservoir. The steel pipe pile cofferdam structure belongs to the technical field of steel pipe pile cofferdam, and aims to solve the problems of difficulty in control over the underwater construction quality, low underwater construction efficiency, difficulty in control over the construction period and high manufacturing cost of an existing structure and method.

Description

technical field [0001] The present invention relates to a steel pipe pile cofferdam structure and a construction method thereof in the reservoir area in front of the dam, which does not limit the present invention. Background technique [0002] With the increase of the service life of the concrete dam of the reservoir, various degrees of cracks and other diseases will appear, which will lead to the decline of the overall safety, applicability and durability of the reservoir. If the security is threatened, it is necessary to carry out the reinforcement construction. In the past, the reinforcement construction of the upstream face of reservoir dams usually adopted methods such as emptying the reservoir, earth-rock cofferdam or underwater construction, etc. These methods all have certain drawbacks. [0003] The emptying of the reservoir will have a certain impact on the natural environment and ecological environment, and during the construction period, the flood control, flood...

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Problems solved by technology

[0006] In order to solve the problem that the existing steel pipe pile cofferdam structure and its construction method in the reservoir area in front of the dam are difficult to control the underwater construction quality, especially the combination of new and old concrete cannot be guaranteed, and the underwater construction efficiency is low, the construction period is difficult to control, and the cost is high. , the present invention provides steel pipe pile cofferdam structure and construction method in the reservoir area in front of the dam

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