混凝土重力坝的抗震性能取决于它的结构型式和细部构造.一座坝若在其运用期内遇到设计烈度的地震,应保证不失去挡水能力,即不允许溃坝或波浪漫溢.在这个前提下,应允许产生残余变形或一定程度的损坏,只要这种损坏在震后能修复。许多文献和资料指出,混凝土重力坝在强震时会产生相当大的动应力,(9度地震时高坝 The seismic performance of concrete gravity dam depends on its structure type and detail structure.If a dam meets the design seismic intensity during the period of its application, it shall ensure that it does not lose its ability to block water, that is, it does not allow dam break or wave overflow. Premise should allow residual deformation or a certain degree of damage, as long as such damage can be repaired after the earthquake. Many literatures and materials point out that concrete gravity dam will generate considerable dynamic stress during strong earthquakes (high dam