The seismic disaster mechanism in cities is that the earthquakes result in direct consequences, original disasters, induced disasters and secondary disasters.
城市地震灾害的成灾机制是地震造成的直接后果、原生灾害、诱发灾害和次生灾害。
Earthquake disaster and their secondary disaster do enormous economic losses and casualties to human beings, and seismic design of building structures is an active measure.
地震灾害以及地震次生灾害给人类带来巨大的经济损失和人员伤亡，对建筑结构进行抗震设计是一种积极有效的方法。
On the basis of analysis for earthquake disaster and secondary disaster risks and for seismic reliability of system several kinds of empirical methods for losses assessment are proposed.
基于地震及次生灾害发生的危险性分析及系统抗震可靠性分析，给出了计算各类经济损失的实用方法。
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