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在城区改造施工中,市区桥梁受周边道路通行及建筑物安全保护等因素制约,一般不宜采用爆破方案拆除。采用静态切割拆除桥梁施工技术噪音低,效率高,施工安全,对周边环境影响较小。文章以郑州市中原路西三环立交桥撤除施工为例,介绍了市区大跨度混凝土连续箱梁桥切割拆除施工技术,为类似工程拆除施工提供了借鉴。
In the urban renewal construction, the urban bridges are restricted by the access of the surrounding roads and the building safety protection. Demolition of the bridge by the blasting scheme is generally not suitable. The static cutting to remove the bridge construction technology low noise, high efficiency, construction safety, less impact on the surrounding environment. Taking the dismantling construction of Zhongsan Road overpass in Zhengzhou City as an example, this paper introduces the construction technology of cutting and demolition of long span concrete box girder bridge in urban area, which provides reference for the similar project demolition construction.