谈高烈度山区公路简支梁桥的抗震措施

摘要

介绍了山区公路简支体系桥梁的特点，对汶川地震中简支体系桥梁支承震害、桥墩震害、地基震害的三种破坏形式进行了分析，从桥位、桥型选择，搭接、限位、防落梁设计，支座、桥墩、基础设计等方面提出了抗震措施。%The paper introduces the features for the simply-supported bridges of mountainous roads,analyzes the three damage forms in Wen-chuan earthquake,including the seismic hazards at bridge supports,bridge piers,and foundations of simply-supported systems,and points out some anti-seismic measures from the bridge location,selection for bridge types,lap joint,limit,unseating design,support,bridge pier,and foundation design.