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序言当重要的结构物位于地震区时,就需要建立可靠的设计准则以考虑未来地震对结构施加的力。统观世界上的记录,似乎还找不到曾经发生强震的地方,其地质构造和地基条件,与新结构物修建的地点几
Preamble When important structures are located in an earthquake zone, reliable design criteria need to be established to account for the forces exerted on the structure by future earthquakes. Looking at the world records, it seems that we can not find a place where strong earthquakes have occurred. The geological structure and foundation conditions are similar to those of the new structure