梁桥限位挡块震害分析及优化设计

摘要

In this paper,the typical damage about shear key from Wenchuan earthquake was focused,then analyse the role of shear key in earth-quake resistance and present the concept in optimum design for shear key. Development of shear key from abroad was analysed and codes of Chi-na and American were compared,in order to explore the optimum design for shear key,combining with engineering examples,then present the optimum design for reasonable shear key.%从汶川地震中与挡块相关的典型震害着手，分析了挡块在桥梁抗震中的作用，进而提出优化设计理念，并从国内外挡块设计的发展及中外规范比较出发，探究了挡块设计的优化方法，同时结合实例，提出了合理的挡块优化设计方法。