秀山西门桥长悬臂拓宽改造关键施工技术

Key Construction Technology for Long Cantilever Widening of Ximen Bridge in Xiushan

在对城市老旧设施进行改造提档时发现,部分老旧设施原结构已不满足需求。该文以秀山西门桥改造为例,介绍长悬臂拓宽改造关键施工技术,工程实践发现,通过对钢筋混凝土窄梁桥进行拓宽改造达到提升功能的目的,可避免拆除重建带来的一系列问题,在缩短工期的同时大幅度降低项目成本。

In the renovation and improvement of old facilities in city,it is found that the original structures of some old facilities cannot satisfy the present needs any more.Based on the Ximen Bridge renovation practice in Xiushan,the key construction technology for long cantilever widening is introduced.The engineering practice displayed that by widening the narrow-beamed reinforced concrete bridge to improve its functions a series of potential problems caused by demolition and reconstruction can be avoided,and the project cost can be greatly reduced while the construction period is shortened.