Bridge underwater pier column structure reinforced by using reinforcing meshes and construction method

Abstract

The utility model provides a bridge underwater pier column structure reinforced by using reinforcing meshes and a construction method. Two semi-annular reinforcing meshes of the exact same specification and shape are prefabricated according to the external diameter of the profile of a to-be-reinforced structure, bolt pin ribs pass through hooks of the reinforcing meshes, and inserted into cap anchoring holes formed in the to-be-reinforced structure, so that the two reinforcing meshes can be enclosed into a closed steel reinforcement cage along the outer profile of the to-be-reinforced structure, flexible moulding membranes are wrapped along locating pieces outside the steel reinforcement cage, steel meshes are wound on the outer side of the flexible moulding membranes, a sealing ring is arranged on the circumference of the bottom end of a cavity between the flexible moulding membranes and the outer surface of the to-be-reinforced structure, and a reinforcement material is poured into the in the cavity between the flexible moulding membranes and the outer surface of the to-be-reinforced structure, to wrap the steel reinforcement cage. The bridge underwater pier column structure reinforced by using reinforcing meshes and the construction method has the advantages of simple process, secondary pouring, good reinforcement quality, no need of a template, reduction of underwater laborintensity, reinforcement under the condition of no drainage, reduction of the influence on a navigation channel, short construction period, improvement of structural durability, and increase of economic benefits.

Description

technical field [0001] The invention relates to a bridge underwater structure reinforcement structure, in particular to an underwater pier column structure and construction method of a bridge reinforced with steel mesh sheets, and belongs to the technical field of civil engineering. Background technique [0002] The number of bridges built in my country is huge, among which a considerable number of bridge foundations and piers are located underwater. The underwater structure of bridges is used in a harsh environment, and has been subject to river water erosion, wear, corrosion, freeze-thaw damage and chemical erosion in severe cold areas for a long time, ships Collisions, etc. These factors all lead to various serious damages to the underwater structure of the bridge, such as spalling of the concrete on the surface of the bridge pier, exposed corrosion of steel bars, stress loss or complete absence, and vertical or circumferential cracks, thereby reducing the life and durabili...

AI Technical Summary

Problems solved by technology

This method is relatively complicated for the fixing process of the steel cage, and it takes a long time to operate underwater. Moreover, due to the influence of the underwater environment and the uncertainty of the damage of the repaired pile, the installation of the anchor plate cannot reach a completely vertical state. It will lead to poor installation effect of the steel cage, thereby prolonging the construction period of the entire maintenance and reinforcement project and increasing the cost.

Images