Slope rock riverbed steel cofferdam based on suspended corner processing structures

Abstract

The invention discloses a slope rock riverbed steel cofferdam based on suspended corner processing structures. The steel cofferdam comprises a steel cofferdam body and the suspended corner processingstructures distributed on suspended corners of the steel cofferdam body; the steel cofferdam body is a cubic steel jacket box supported on the slope rock riverbed; each suspended corner processing structure comprises two suspended wallboard processing structures; each suspended wallboard processing structure comprises one or more suspended wallboard segment processing structures distributed on thesame vertical plane from front to back; each suspended wallboard segment processing structure is distributed on a suspended wallboard segment; and each suspended wallboard processing structure is aninserting plate type processing structure or a specially-shaped block and inserting plate combined processing structure. The suspended corners of the steel cofferdam is effectively processed through the suspended corner processing structures, the suspended wallboard processing structures in the suspended corner processing structures can adapt to the topographical change of the riverbed and can becombined with bottom blocking structures for underwater blockage, and the problem of the suspended corners of the slope rock surface steel cofferdam can be solved.

Description

technical field [0001] The invention relates to a steel cofferdam, in particular to a steel cofferdam on a slope rock riverbed based on a suspension foot treatment structure. Background technique [0002] Steel cofferdam is the water-retaining structure of cap platform construction. Steel cofferdam is usually used in the construction of bridge deep water foundation. The commonly used cofferdam can be divided into single-wall cofferdam and double-wall cofferdam according to the structure. When steel cofferdams are used to construct piers in water, the steel cofferdams need to be lowered to the river bed first. Due to the unevenness of the river bed surface, especially when the steel cofferdam is located on the slope rock river bed, the bottom of the steel cofferdam will be suspended, such as the corner of the steel cofferdam with a rectangular cross section. Suspended hanging feet (that is, at the top corner of the suspended steel cofferdam) make it impossible to implement l...

AI Technical Summary

Problems solved by technology

Due to the unevenness of the river bed surface, especially when the steel cofferdam is located on the slope rock river bed, the bottom of the steel cofferdam will be suspended, such as the corner of the steel cofferdam with a rectangular cross section. Suspended hanging feet (that is, at the top corner of the suspended steel cofferdam) make it impossible to implement leakage plugging on the outside of the cofferdam, which brings great difficulties to the construction of the cofferdam bottom sealing concrete, which directly affects the success of the steel cofferdam bottom sealing

In addition, combined with the design elevation of the bottom of the cap, it is usually necessary to excavate the foundation pit for the steel cofferdam by blasting on the river bed first. , the total height of the steel cofferdam also needs to be increased accordingly, and the excavation workload of the foundation pit will increase, which will greatly increase the cost and the construction period will be longer

Images