一、引言当强地震袭击到居住区时,许多建筑物将遭受不同程度的破坏,有些甚至倒塌,其结果是:由于害怕余震,人们不得不弃离他们的家园,另寻暂时的栖身处。因此,政府首先要做的最紧急的工作之一是调查受地震影响地区的所有建筑物,评估它们的破坏程度、安全性与可用性。一旦评估好那些仍属安全的建筑物,大部分 I. INTRODUCTION When a strong earthquake strikes a residential area, many buildings will be damaged in varying degrees and some will even collapse. As a result, people will have to abandon their homes and look for shelter temporarily due to fear of aftershocks. Therefore, one of the most urgent tasks the government must first do is to investigate all the buildings in the area affected by the earthquake and evaluate their degree of destruction, safety and availability. Once you assess those buildings that are still safe, most of them