During earthquakes, various indirect disasters and casualties are directly caused by the collapse of buildings. So in order to reduce losses, it is important to study the strategies and countermeasures on seismic strengthening of urban buildings.

• 地震时造成各种次生灾害和人员伤亡的直接原因主要是由建筑物受震倒塌引起的,因此研究城市建筑物抗震加固的策略和对策,从而避免或减少震害损失,对实现城市防震减灾的目标是十分重要的。