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Construction method of combined cofferdam under complex geological condition

A technology with complex geological conditions and construction methods

Active Publication Date: 2012-07-25
THE FIRST CIVIL ENG CO LTD OF CREC SHANGHAI GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For example, for the Shuangyong Bridge in Liuzhou City, Guangxi, half of the 22# main tower cap is located in the water and half is located on the shore, and the rock level at the cofferdam has large fluctuations, so it is impossible to carry out construction of a single cofferdam in the existing structure
Aiming at the shallow water foundation of this bad geological condition and special geographical location, there is no public report of a cofferdam with a specific structure related to it in the prior art

Method used

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  • Construction method of combined cofferdam under complex geological condition
  • Construction method of combined cofferdam under complex geological condition
  • Construction method of combined cofferdam under complex geological condition

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Embodiment Construction

[0020] see figure 1 , figure 2 , the joint cofferdam in the present embodiment sets up the concrete anti-slide pile section 1 and the locking steel pipe pile section 2 in sections in the whole surrounding weir, and the front concrete anti-slide pile 1a and the tail section in the concrete anti-slide pile section 1 Concrete anti-slide piles 1b are respectively connected with tail locking steel pipe piles 2b and front locking steel pipe piles 2a in the locking steel pipe pile section 2 to form a closed whole surrounding weir.

[0021] Such as figure 2 As shown, in the specific implementation, the connecting structure between the concrete anti-sliding pile section 1 and the lock steel pipe pile section 2 is: the tail anti-sliding concrete 1b is equipped with a full-range steel protective casing with a steel casing lock 8 Tube 4, the steel pipe pile 2a at the corresponding position is equipped with a steel pipe pile lock 9, and the steel pipe pile lock 9 is locked and connecte...

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Abstract

The invention discloses a combined cofferdam under the complex geological condition and a construction method thereof. The combined cofferdam is characterized in that a concrete antiskid pile section and a locking steel pipe pile section are arranged in the whole cofferdam by sections; and a front end concrete antiskid pile and a tail concrete antiskid pile in the concrete antiskid pile section are respectively connected with a tail locking steel pipe pile and a front end locking steel pipe pile in the locking steel pipe pile section to form the whole sealed cofferdam. The cofferdam under thecomplex geological condition has clear structural stress, firm structure, good water stopping effect and simpler construction method and can effectively protect basic construction quality.

Description

technical field [0001] The invention relates to a cofferdam under complex geological conditions and a construction method thereof, more specifically a cofferdam with relatively complicated stress, relatively large rock surface fluctuations, and simultaneously covering land and water, and a construction method thereof. Background technique [0002] In some engineering constructions, often for foundation construction, it is first necessary to form a closed cofferdam at the construction location, so that the inside of the cofferdam is a water-poor or dry area, so that the subsequent foundation construction can proceed normally. [0003] The current cofferdam structure usually has two forms, one is a cofferdam formed by rows of concrete piles, which is mainly suitable for land, and the rock layer is higher; the other is a cofferdam formed by locking steel pipe piles The connection is formed in the form of a mouth, which is mainly suitable for water and has a certain thickness of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04
Inventor 唐俊李飞伍军赵大昭李光均周运志王玉林夏亚飞冯海珍肖雪虎
Owner THE FIRST CIVIL ENG CO LTD OF CREC SHANGHAI GRP