公路桥梁震害分析及对策

地震会造成大量桥梁结构的破损,严重影响道路运输的正常运营。采取何种措施降低桥梁震害已成为桥梁工程的热点问题。从桥梁震害破坏形态上将桥梁震害的破坏分为上部结构破坏和下部结构破坏,重点分析了梁体偏移和落梁、支座破坏、伸缩缝和挡块破坏、墩台和基础破坏的现象及成因。结合调查分析,在桥位选择、抗震设计理念以及结构和构造等方面给出桥梁抗震的对策和建议,为桥梁设计、施工提供借鉴和参考。

Earthquake Damage Analysis and Countermeasures for Highway and Bridge

Earthquake will cause damage to a large amount of bridges,seriously influencing normal operation of transportation.To reduce bridge damage from earthquake has become the hot issue of bridge engineering.In this paper,bridge damage is divided into supperstructure failure and substructure failure from failure mode.The phenomena and causes of beam deflection and placement,supporting seat failure,expansion joint and block failure,pier and foundation failure are analyzed.Combined with survey and analysis,this paper gives countermeasures and suggestions for bridge damage in the aspect of bridge location,anti-earthquake design concept,structure and construction,which provides reference for bridge design and construction.