Lock catch steel pipe pile cofferdam inner support guide device

Abstract

The invention discloses a lock catch steel pipe pile cofferdam inner support guide device. The guide device comprises a base plate and a moving mechanism, wherein the moving mechanism is rigidly connected to the base plate; and the base plate is connected with an inner support, and the moving mechanism is movably connected with breast beams through guide roller wheels. According to the device, compared with the prior art, the structure stability of the cofferdam under normal construction load can be guaranteed, the coordination adaptability of a system after sudden change under inner support adjustment can be guaranteed, and the device has the advantages of being high in adaptability, high in automation level, easy to operate and the like; and if the device is applied to a large lock catchsteel pipe pile cofferdam, the construction effect can be remarkably improved, the safety risk in inner support adjustment construction is reduced, and therefore efficient, economical, convenient andrapid construction of a bearing platform and pier columns in water is achieved.

Description

technical field [0001] The invention belongs to the technical field of steel cofferdam engineering, and in particular relates to a guide device for freely moving inner supports of large locking steel pipe pile cofferdams. Background technique [0002] Steel cofferdam is a temporary enclosure structure for retaining soil or water for the construction of permanent structures, including steel sheet pile cofferdam, steel box cofferdam, steel hanging box cofferdam and steel pipe pile cofferdam, etc. The structural form can be used for the construction of caps, tie beams and pier columns in water. [0003] Locking steel pipe pile cofferdam has the advantages of simple and fast processing, short construction period, stable and reliable structure, high material recycling rate, etc., and has obvious competitiveness in the underwater foundation construction of bridges across large rivers. [0004] Since the steel pipe pile locking is only used to realize the effective occlusion of th...

AI Technical Summary

Problems solved by technology

This adjustment method is not only difficult to construct, but also leads to greater safety hazards due to the sudden change in the structural characteristics of the cofferdam, and even causes the cofferdam to collapse in extreme cases

Taking the construction of double-leg thin-walled pier as an example, the inner support will hinder the binding of the pier column reinforcement and formwork installation, and it needs to be removed before the pier column construction. Since the cofferdam cannot store water, the structure is very likely to Dealing with Extremely Dangerous Situations

[0006] Therefore, the welding method is used to connect the purlin and the inner support as a whole, and the adjustment of the inner support through the direct cutting method only pays attention to short-term economic benefits and progress requirements and ignores extremely important safety factors, which has very obvious application limitations.

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