【摘要】 对大跨结构的地震分析方法做了简要的介绍和评述。大跨结构与普通结构相比,在地震作用下要考虑地震地面变化的空间变化效应(即:行波效应、部分相干效应和局部场地效应等)。基于这一考虑,重点介绍了多点非一致激励反应谱分析方法、非平稳随机响应的虚拟激励法和时程分析方法,最后给出一些建议。更多还原

【Abstract】 It introduces the seismic analysis methods for long-span bridges.Comparing to common structures,it is necessary to consider special changing effects of earthquake waves,such as traveling wave effect,part intervening effect and local area effect.Based these considers,the paper introduces analysis methods for multiple points non-consistent bestirring response chart,non-calm dummy bestirring and time-space.At last,some suggestions are supplied.更多还原