A detachable single-wall steel hanging box cofferdam structure and its overall hoisting construction method

Abstract

The invention discloses a detachable type single-wall steel suspension box cofferdam structure and an integral hoisting construction method. The detachable type single-wall steel suspension box cofferdam structure is of a detachable type structure comprising section steel and a steel plate. The detachable type single-wall steel suspension box cofferdam structure comprises a wall plate, enclosing purlins, an inner support and a suspension system, wherein a vertical rib and a horizontal reinforcing rib are arranged on the outer surface of the wall plate; a bottom plate is connected on the bottom of the wall plate; enclosing purlins are arranged at the inner side and the outer side of the wall plate; the inner support is supported on the enclosing purlin at the inner side; the enclosing purlin at the outer side is connected with the vertical rib through a bolt; a self-balancing opposite-pulling rod is arranged between the enclosing purlin at the inner side and the enclosing purlin at the outer side; the inner end of the self-balancing opposite-pulling rod is anchored on a flange of the inner support, and the outer end of the self-balancing opposite-pulling rod is anchored on the enclosing purlin at the outer side; the suspension system comprises cross suspension frames and a lifting lug, wherein threaded steel lifting rods are arranged on four end parts of each cross suspension frame respectively, and the lower ends of the threaded steel lifting rods are anchored on a bottom plate supporting beam. The detachable type single-wall steel suspension box cofferdam structure is simple in structure, small in steel dosage, less in field welding amount, convenient to assemble and disassemble and easy to process, and other components except from the bottom plate can be recycled.

Description

technical field [0001] The invention relates to a deep-water construction cofferdam structure, in particular to a detachable single-wall steel hanging box cofferdam structure and an integral hoisting construction method. Background technique [0002] The steel hanging box cofferdam structure is mainly used for the construction of high pile caps and the case where the bottom of the cap is sand or loose cover. When the bottom of the cap is sand or loose cover, sand blowing or sand blowing can be considered. The position of the bottom plate of the hanging box is cleared out by means of mud pumping and dredging, and then the bottom plate and the wall plate of the steel hanging box are lowered to form a cofferdam after sealing the bottom. Its function is to provide an anhydrous and dry environment for the cap platform construction through the sealing concrete surrounding water on the side plate and bottom plate of the hanging box cofferdam. Compared with the steel box cofferdam,...

AI Technical Summary

Problems solved by technology

[0004] For example, in the construction of the high pile cap of the Pingtan Strait Highway and Railway Bridge on the Fuping Railway, due to the harsh construction environment, the hanging box must meet the requirements of rapid construction in addition to the functions and advantages of the traditional hanging box. and the back cover to win time, the structural form in the prior art is difficult to meet this requirement

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