附加限位装置对钢管混凝土拱桥的减震效果

Seismic Response Reduction of An Arch Bridge by Adding Seismic Restrainers

以某钢管混凝土拱桥为工程背景,在动力特性和反应谱分析结果的基础上,分析其在地震荷载作用下主桥伸缩缝处采用限位装置后的结构地震响应。研究结果表明,附加限位装置能显著减小伸缩缝处相邻桥面系的相对位移,提高结构的抗震安全性。

Taking a concrete filled steel tubular （CFST） arch bridge as the background, based on dynamic characteristics and response spectra analysis results, an investigation is made of the dynamic response of the bridge with seismic restrainers at expansion joints of main span subjected to seismic load. The investigation indicates that adding seismic restrainers can significantly reduce relative displacement between bridge segments at expansion joints, thus improve the structural seismic safety performance.