Temporary support tool for replacing bridge tension and compression support and replacement construction method of temporary support tool

Abstract

The invention discloses a temporary support tool for replacing a bridge tension and compression support. The temporary support tool comprises an upper base plate assembly, an upper tool assembly, a middle tool assembly and a lower tool assembly. The upper base plate assembly comprises an upper base plate anchoring steel plate arranged at the topmost end, an upper base plate connecting steel plate,an L-shaped upper base plate buckle plate and an upper base plate polytetrafluoroethylene plate; the upper tool assembly comprises an upper tool polyfluortetraethylene plate, an upper tool upper steel plate located on the lower end face of the upper tool polyfluortetraethylene plate, an upper tool lower base plate, an upper tool transverse stiffening plate and an upper tool longitudinal stiffening plate. The middle tool assembly comprises a middle tool upper base plate, a middle tool longitudinal stiffening plate, a middle tool transverse stiffening plate and a middle tool lower base plate. The lower tool assembly comprises a lower tool upper base plate, a lower tool transverse stiffening plate, a lower tool longitudinal stiffening plate and a lower tool lower base plate. Under the conditions that traffic is not interrupted on the bridge floor and a bridge floor balance weight method is not needed, the opposite-pulling and opposite-pressing support with diseases can be replaced in time, mounting and dismounting are convenient and fast, and economical efficiency is good.

Description

technical field [0001] The invention relates to a temporary support tooling for bridges, in particular to a temporary support tooling for replacing bridge tension and compression bearings and a replacement construction method thereof. Background technique [0002] As a cable system, the cable-stayed bridge is the main type of long-span bridge because of its greater spanning capacity than the girder bridge. Generally speaking, the cost of cable-stayed bridges with a span of 300 to 1400 meters is about 30% lower than that of suspension bridges. Therefore, cable-stayed bridges are loved by bridge designers and builders all over the world. [0003] Cable-stayed bridges can be divided into floating systems, semi-floating systems, tower-beam consolidation systems, and rigid frame systems according to the combination of towers, beams, and piers. No matter which system of cable-stayed bridge is used, it is inseparable from the existence of bridge supports. The bridge bearing is a...

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is that the bridge deck ballast counterweight method is mainly used for the replacement of the tension and compression bearings of bridges in the current industry in the prior art. In this method, the bridge deck interrupts the traffic, which not only causes economic losses, but also causes more serious problems. The second is that a lot of manpower, material and financial resources are invested, which increases the maintenance cost; the third is that adding counterweight and ballast to the bridge deck takes a long time and low work efficiency, and the counterweight and ballast change to a certain extent The redistribution of internal stress in the bridge can easily cause uneven changes in local cables and main girders

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