The old bridge ecological demolition structure and construction method

Abstract

The invention relates to an old bridge ecological dismantling structure, including a bridge dismantling crane, an anchor rod, an old bridge cover beam, an old bridge pier column, an old bridge foundation, a hook, a hoisting cable, an old bridge cast-in-place slab, a transport vehicle, and an old bridge dismantling unit. , guardrail demolition stabilization device, pontoon crane, demolition unit dividing line, gun hole, hanging hole, flying stone protection net and mobile support protection system; the upper part of the old bridge foundation is provided with an old bridge pier column, and the upper part of the old bridge pier column is provided with There is an old bridge cover beam, and the old bridge cast-in-place slab is erected on the upper part of the old bridge cover beam; the guardrail removal and stabilization device includes a stabilized inclined rod, a stable hook, a bolt and a base, the stable hook is connected to the upper end of the stable inclined rod, and the stable inclined rod The lower end of the rod is connected to the base with the bolt hole. The beneficial effects of the present invention are as follows: the present invention adopts the protective net covering the flying stones in the static blasting area to carry out segmental splitting, which can not only prevent the flying stones from hitting people, but also prevent dust, and avoid the shortcomings and limitations of traditional blasting construction. The environment is protected and the safety is high.

Description

technical field [0001] The invention relates to the technical field of bridge demolition engineering, in particular to an old bridge ecological demolition structure and a construction method. Background technique [0002] With the rapid growth of the social and economic level, the national transportation infrastructure has also developed rapidly, and some of the roads, railways and bridges built in the early days are no longer suitable for the current transportation needs. Especially for these bridges that cannot meet the needs of modern traffic or have reached the design age, they need to be demolished, otherwise it will cause great losses to the country and people's lives and properties. [0003] Among the existing bridge demolition construction technologies, there are mainly mechanical crushing demolition, blasting, cutting, disassembling and hoisting. When the bridge is demolished, the stability of the structure should be ensured as much as possible, and the bridge shou...

AI Technical Summary

Problems solved by technology

Although the mechanical crushing and demolition construction and blasting construction period is short and the investment in mechanical equipment is small, the environmental pollution during the construction process is large. At the same time, the blasting construction needs to keep a certain safe distance from the surrounding buildings, and strict safety and traffic control should be carried out on the construction site.

However, although the demolition noise and air pollution are small by cutting, dismantling and hoisting, the construction period is too long and the investment in large-scale mechanical crushing technology is large.

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