Construction method of concrete used for reinforcing underwater pier

Abstract

The invention belongs to the technical field of bridge construction, in particular relates to a construction method of concrete used for reinforcing an underwater pier; the method is to install a foam rubber, a rubber sheet and an orientation positioning device on a steel cofferdam, and is to use an underwater non-segregation concrete to replace general underwater concrete to complete the construction of concrete used for reinforcing the underwater pier. The method has the following construction steps: A, installing the foam rubber at the bottom surface of the steel cofferdam before the steel cofferdam enters water; B, installing the orientation positioning device on the inner wall of the steel cofferdam before the steel cofferdam enters water; C, installing the rubber sheet on the internal edge of the baseboard of the steel cofferdam before the steel cofferdam enters water; D, installing a concrete pouring pipeline before the steel cofferdam sinks to the preset position; E, installing a pouring funnel on the top of the concrete pouring pipeline and pouring underwater non-segregation concrete; F, removing the pouring funnel and the concrete pouring pipeline to complete the construction of concrete used for reinforcing the underwater pier. The invention successfully solves the difficult problem of the construction of concrete used for reinforcing the underwater pier, creates a safe, reliable, economical, convenient and fast construction method of concrete used for reinforcing the underwater pier.

Description

Technical field: [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a construction method of concrete for underwater bridge pier reinforcement. Background technique: [0002] Due to design defects, construction quality accidents, earthquakes or other natural disasters, ship collisions and overloading, more and more completed bridges need to be reinforced. If there are cracks or other diseases in the underwater pier body of the bridge pier that has been built, it is best to first install a steel cofferdam within a certain range around the outer periphery of the bridge pier where the problem occurs, and then install a steel cofferdam between the outer wall of the bridge pier and the inner wall of the steel cofferdam. Concrete is poured to reinforce the underwater piers within a certain height range on the top surface of the foundation. In the field of highway and bridge construction, traditional underwater concrete pouring...

AI Technical Summary

Problems solved by technology

Uninterrupted high-speed pouring of underwater concrete with good fluidity under deep water conditions will generate an overpressure sufficient to cause deformation of the weir body and even overall displacement of the weir body on the steel cofferdam placed on the top surface of the underwater pier cap. This excess pressure cannot start the construction of concrete for underwater pier reinforcement

It can be seen that the traditional underwater concrete construction method cannot be implemented when constructing concrete for underwater pier reinforcement.

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