宿迁市运河文化桥现状老桥护栏提升改造设计及应用

Design of Upgrading Reconstruction of Old Bridge Guardrail and Its Application in Wenhua Bridge on Canal in Suqian City

随着经济和社会的发展,城市道路的快速化改造工程越来越多。由于新建道路设计时速及标准均有提高,既有现状老桥的防撞护栏等级已经不能满足新建城市快速路标准的要求,需要对现有老桥防撞护栏进行提升改造。以宿迁市迎宾大道二期快速化改造工程为例,介绍了现状运河文化桥老桥防撞护栏的提升改造设计方案,并采用屈服线分析和强度设计理论及非弹性分析方法进行了计算分析。在实际工程应用中,取得了良好的效果,以期为类似的现状老桥护栏提升改造项目提供借鉴。

With the development of economy and society,there are more and more expressway reconstruction projects for urban roads.Due to the improvement in the design speed and standards of new roads,the anti-collision guardrail level of existing old bridges can no longer meet the requirements of new urban expressway standards.Therefore,it is necessary to upgrade and reconstruct the anti-collision guardrail of existing old bridges.Taking Suqian Yingbin Avenue Phase II Expressway Reconstruction Project as an example, the upgrading reconstruction design scheme of the old bridge guardrail for Wenhua Bridge on the canal is introduced. And the yield line analysis, strength design theory and inelastic analysis method are used to carry out the calculation and analysis. In the practical engineering application, the good effects are obtained in order to provide the reference for the similar upgrading reconstruction projects of old bridge guardrail.