Technology for constructing anti-collision bridge pier by steel cofferdam

Abstract

The invention discloses a technology for constructing an anti-collision bridge pier by a steel cofferdam. The upper part of a pile steel protection cylinder is provided with a horizontal fixed bottomplate; a prefabricated anti-collision steel cofferdam is erected on the bottom plate, and the top of the anti-collision steel cofferdam is higher than the water surface; sealed foundation concrete ispoured on the bottom plate, water in the anti-collision steel cofferdam is pumped, the anti-collision steel cofferdam has double functions and integrates the water blocking function of a conventionalsteel cofferdam and the anti-collision function of a bridge pier permanent, and an inner layer is used as a template for pouring a support platform on the sealed foundation concrete; a bridge pier ora pylon is poured on the support platform; and the invention adopts an anti-collision steel cofferdam structure with a sandwich structure and has better energy absorption effect, the support platformand an internal plate of a sleeve box are directly poured into a whole after pouring is completed, the anti-collision steel cofferdam acts as an anti-collision function after construction, and the processes of disassembling and assembling the template are omitted, thereby the construction process can be simplified, the construction efficiency is enhanced, the construction period of a main body isnot occupied, the bonding strength with the bridge pier is higher, the bridge pier can not be damaged during construction and the construction quality is ensured.

Description

Technical field [0001] The invention relates to a bridge structure, in particular to a process for constructing an anti-collision bridge pier by using a steel cofferdam. Background technique [0002] The pier anti-collision measures of the bridge are an important means to ensure the safety of the bridge. The main danger comes from the collision of the pier by the ship. The pier anti-collision measures mainly include directly connected anti-collision devices and indirect anti-collision devices to prevent ships from damaging the piers. The indirect anti-collision devices include artificial islands and pier protection piles around the piers, which can better solve the piers. Anti-collision problem, but it covers a large area and can only be installed in shallow water depths and well-founded riverbeds. It is not suitable for use in waters with small river areas. At the same time, the construction cost is high; directly connected anti-collision devices are installed directly The prot...

AI Technical Summary

Problems solved by technology

In the prior art, the plastic deformation buffer structure is generally used to install plastic deformation sleeves around the formed pier. The construction process is complicated, the construction efficiency is low, and the main construction period is occupied. Moreover, the bonding strength with the pier is not high, causing certain damage to the pier. Construction poor quality

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