连拱坝的振动与抗震  

Vibration and siesmic resistence of mutiple-arch dam

作　　者：路观平[1] 王晓泉[1] 

机构地区：[1]安徽省水利部淮委水利科学研究院,安徽蚌埠233000

出　　处：《水利水运科学研究》2000年第2期14-20,共7页

摘　　要：以佛子岭连拱坝为典型对象讨论了连拱坝的振动与抗震特性 .从模态综合可见 ,密集的连拱坝模态主要是由各支墩为主体分量的一阶模态相互作用的结果 .连拱坝的总体模态反映了各支墩及拱振动模态不同的排列组合 .每个支墩的振动或对地震的响应是这些不同排列组合的综合结果 .连拱坝的基本模态是一个模态群 ,在这个模态群中的每一个模态都有相同量级的作用 。In this paper, the vibration and seismic resistance characteristics of the multiarch dam are discussed according to the calculation result of the Fuzilin Dam by modal synthesis. It may be seen that the modals of the multiarch dam are very dense and they are formed by the interaction of buttresses as the main components with their first modal. The global modals of the multiarch dam reflect the different arrangements and compositions of the sub modals of all buttresses and arches.The vibration or response to the earthquake of every buttress is the summary result of these arrangement and composition.the fundamental frequency of the multiarch dam is a frequency group. In this group, every modal possesses the contribution of the same class and can not be neglected.

关 键 词：连拱坝 动力分析 抗震 

分 类 号：TV312[水利工程—水工结构工程] TV642.52