桥梁结构地震碰撞问题理论分析模型及试验研究进展

Advances in analytical models and experimental studies on earthquake-induced pounding between adjacent bridge decks

介绍了桥梁结构地震碰撞效应理论分析模型及相关试验研究的最新进展情况。对最近30年来的强地震中发生的桥梁结构地震碰撞损坏现象进行了回顾,评述了已经发展的各种桥梁地震碰撞作用模拟方法,主要分为恢复系数法和接触单元法两类;其中接触单元法又包括线性弹簧单元模型、Kelvin模型、Hertz模型、Hertz-damp模型、改进的Hertz-damp模型以及三维接触-摩擦模型。同时又介绍了有关结构地震碰撞的试验研究进展情况并展望了有待进一步研究的问题。

Advances in analytical models and experimental studies on earthquake-induced pounding between adjacent bridge decks are introduced.The bridge damage in the past 30 years induced by seismic pounding of strong earthquake are reviewed,various analytical models used to simulate impact effect between bridge decks are presented,which include impact-restitution approach and contact-element approach.The contact-element approach includes the linear spring element model,Kelvin-Voigt element model,Hertz model,Hertz-damp model,updated Hertz-damp model and 3D contact-friction model.The state-of-the-arts of experimental studies on earthquake-induced pounding are presented and the areas required to further investigate are proposed.