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Method for synchronously controlling sinking double-wall steel cofferdam by jack

A double-wall steel cofferdam and synchronous control technology, which is applied in construction, infrastructure engineering, etc., can solve problems such as poor synchronization, easy cracks, and safety accidents

Active Publication Date: 2013-01-09
SHANGHAI CIVIL ENG GRP FIFTH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sinking of double-wall steel cofferdams mostly adopts the method of hand chain hoists. Due to factors such as human operation, the synchronization is poor, the force on the cofferdam is uneven, and cracks and safety accidents are prone to occur.

Method used

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  • Method for synchronously controlling sinking double-wall steel cofferdam by jack
  • Method for synchronously controlling sinking double-wall steel cofferdam by jack

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the present invention will be further described.

[0015] figure 1 Shown is a structural schematic diagram of the present invention, combined with figure 1 Schematic diagram of the section along the line A-A Figure 1 It seems that the concrete steps that the present invention implements are:

[0016] (1) To build the portal frame, on both sides of the double-walled steel cofferdam 4, use the steel platform 1, the steel pipe pile 5, the inner steel pipe 12 and the outer steel pipe 7, and the double I4Oa I-beam 2 to make 10 intervals The cofferdam of cloth is used to lift the sinking gantry frame, wherein, the inner steel pipe 12 and the outer steel pipe 7 are respectively arranged on the steel platform 1 and the steel pipe pile 5 on both sides of the cofferdam 4, and the I-shaped steel beam 2 is horizontally mounted on the inner steel pipe 12 and the top of the outer steel pipe 7 constitute a door frame. Place a 100t s...

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Abstract

The invention discloses a method for synchronously controlling a sinking double-wall steel cofferdam by a jack. A steel pipe pile, a synchronous jack, finish rolling screw thread steel rods, a shoulder pole beam and a coupled I-shaped steel girder are fully utilized. The method is characterized by comprising the following steps of: building a portal, arranging the shoulder pole beam, two finish rolling screw thread steel rods and screw caps, primarily lifting the cofferdam, and secondarily lifting the cofferdam and sinking the cofferdam and other steps. According to the method, the problem of uneven stress in a cofferdam sinking process caused by anthropic factors and the like is effectively solved by combination of the synchronous jack and the portal; security in the cofferdam sinking process is ensured, and the method is suitable for building roads, bridges or buildings in water.

Description

technical field [0001] The invention relates to a hoisting method, in particular to a method for sinking a double-wall steel cofferdam. Background technique [0002] When building roads, bridges or buildings in water, the construction of caps and piers in water uses sinking double-wall steel cofferdams. Double-wall steel cofferdam has the characteristics of high structural rigidity, wide application range and high safety factor, and is widely used in deepwater foundation engineering. At present, the sinking of double-wall steel cofferdams mostly adopts the method of chain hoists. Due to factors such as human operation, the synchronization is poor, the force on the cofferdam is uneven, and cracks and safety accidents are prone to occur. Contents of the invention [0003] The object of the present invention is to provide a method for synchronously controlling the sinking of double-walled steel cofferdams with good synchronization, uniform force on the cofferdam and safety. ...

Claims

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Application Information

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IPC IPC(8): E02D15/08
Inventor 黄忠睦刘健张利军吴宇刘水刘庆平喻安湘邓毅薛昌汭杨平
Owner SHANGHAI CIVIL ENG GRP FIFTH
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