Foamed lightweight concrete backfilling bridge pier structure

Abstract

The invention discloses a foamed lightweight concrete backfilling bridge pier structure, and relates to the field of bridge pier position backfilling. The foamed lightweight concrete backfilling bridge pier structure comprises an original bridge pier bearing platform arranged underground and a bridge pier assembly arranged on the top of the original bridge pier bearing platform; and the bridge pier assembly comprises an overground bridge pier and an underground bridge pier which are integrally formed; the bridge pier assembly is of a cylindrical hollow structure of which the bottom diameter islarger than the top diameter, the underground bridge pier is filled with a foamed lightweight concrete layer B, an auxiliary bearing mechanism is arranged on the exterior of the underground bridge pier and comprises an upper structure, a foamed lightweight concrete layer A and a rubble layer which are sequentially arranged from top to bottom, the rubble layer is laid on the top of the bearing platform, and the inner wall and the outer wall of the underground bridge pier are each coated with a waterproof layer. According to the foamed lightweight concrete backfilling bridge pier structure, influences such as vertical deformation, vertical differential settlement and lateral deformation on the bridge pier can be reduced, and the specification requirements of the bridge pier are met while the safety of the bridge pier is guaranteed.

Description

technical field [0001] The invention relates to the field of bridges, in particular to the field of backfilling bridge piers. Background technique [0002] With the continuous development and construction of the city, the building land area will gradually decrease. In order to save the building land and make full use of the space, the problem of backfilling the existing bridge piers will be widely encountered in the future. Foam lightweight concrete is a new type of concrete material. The foaming agent is fully foamed mechanically through the foaming system of the foaming machine, and the foam and cement slurry are evenly mixed, and then processed through the pumping system of the foaming machine. Cast-in-place construction or mold molding, a new type of lightweight insulation material with a large number of closed pores formed after natural curing. Its density is small, and the density level is generally 300-1800kg / m 3 The use of this material in building structures such ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a foam lightweight concrete in order to solve the technical problems of vertical deformation of bridge piers, vertical differential settlement and lateral deformation caused by the weight of the existing bridge overburden layer and the excessive vertical load pressure of the pile foundation. backfill pier structure

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