Engaged pile-double wall steel combined cofferdam connecting structure and construction operation technology

Abstract

The invention discloses an engaged pile-double wall steel combined cofferdam connecting structure and a construction operation technology. The engaged pile-double wall steel combined cofferdam connecting structure and the construction operation technology are characterized in that the novel engaged pile-double wall steel combined cofferdam connecting structure is provided with an embedded part A,an embedded part B, a ring-shaped groove formed in the contact position of the top of a crown beam and an outer wall plate of a double wall steel cofferdam, a groove interior water stop material, anchor bars stretching in the crown beam and the double wall steel cofferdam and concrete poured in a sandwich cabin of the double wall steel cofferdam. The embedded part A is directly connected with theinner wall plate of the double wall steel cofferdam. The ring-shaped groove is formed in the contact position of the top of the crown beam and the outer wall plate. The embedded part B is arranged atthe bottom of the ring-shaped groove. The outer wall plate is connected with the embedded part B at the bottom of the ring-shaped groove. A certain clearance is reserved between the outer wall plate and the position, close to the outer wall of an engaged pile, of groove wall of the ring-shaped groove, and the clearance is filled with the water stop material. The engaged pile-double wall steel combined cofferdam connecting structure and the construction operation technology are specific to engaged pile-double wall steel combined cofferdams, and safe of the combined cofferdam in the whole building and use period is ensured under the premise that construction convenience is achieved.

Description

technical field [0001] The invention relates to the field of cofferdam construction, in particular to a cofferdam connection structure and a construction operation process of an occlusal pile-double-wall steel combination. Background technique [0002] For the construction of deep water foundations of bridges, when the water level difference between the dry season and the flood season is large, the construction period is tight, and the construction of occlusal piles is more convenient in the dry season, the occlusal pile-double-wall steel composite cofferdam is used as a temporary structure to realize the continuous operation of the foundation during the flood period. It is a form of temporary structure with relatively high comprehensive indicators (economy, security, etc.). [0003] The occlusal pile-double-wall steel composite cofferdam is a composite cofferdam structure in which a double-wall steel cofferdam is connected to the top of the occlusal pile crown beam. The con...

AI Technical Summary

Problems solved by technology

Usually, the steel-concrete structure is connected by pre-embedded steel components on the top of the concrete, and the bottom of the steel structure is connected with the pre-embedded steel components. Steel components, the inner and outer wall panels of the double-wall steel cofferdam are directly connected to the embedded parts on the top surface of the occlusal pile. During the entire service period of the steel cofferdam, it is easily affected by connection defects, water pressure, construction load, etc., and the connection parts are prone to The phenomenon of water leakage from cracks, and it is very difficult to stop water, the effect of water stop is poor, and the later maintenance cost is high, which has a great impact on construction and safety

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