高速公路桥梁加宽设计方法与过程

Widening Design Method and Process of Expressway Bridge

桥梁加宽设计是旧桥改扩建的重要方法,改扩建需要充分考虑旧桥的结构性能,同时满足新建桥梁对旧桥的分担效应及连接作用。总结了高速公路桥梁加宽设计的原则,并归纳现有加宽设计经验下的不同连接方式、存在问题和应用实践,分析了加宽设计的主要影响因素,有关经验可供相关专业人员参考。

The bridge widening design is the important method to reconstruct and extend the old bridges. It is required to fully consider the structure property of old bridge in the reconstruction and extension, and also tosatisfy the sharing effect and connection function of the newly built bridge with old bridge. The article summarizes the widening design principle of expressway bridge, concludes the different connection modes, the existing problems and the application practices according to the existing widening design experience, and analyzes the main influence factors on the widening design. The relative experience can be referenced for the similar bridges.