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前言多数大地震中,地震引起的地面永久位移是造成震害的一个主要原因。据Youd报告,1964年阿拉斯加地震中约60％的震害直接由地面位移造成。基于震后对有震害与无震害建筑物的调查,Youd指出大多数建筑物能经受50～100mm的不均匀地面位移而只产生小的震害;有少数建筑物经受得住1米多位移而无严重震害。由于地面位移而引起的结构震害,取决于位移场的特点、结构及其基础的性
Introduction In most major earthquakes, permanent ground displacements caused by earthquakes are a major cause of earthquake damage. According to Youd’s report, about 60% of the earthquake damage in the 1964 Alaska earthquake was directly caused by ground displacement. Based on the survey of buildings with earthquake damage and non-seismic damage after the earthquake, Youd pointed out that most buildings can withstand 50-100mm non-uniform ground displacement and only produce small earthquake damage; a few buildings can withstand more than 1 meter Displacement without serious damage. Structural damage due to ground displacement depends on the characteristics, structure, and basic properties of the displacement field.