本文通过对砖砌烟囱爆破拆除的实例分析,探讨了中等强度高丛构筑物倾倒运动中的一个重要现象。对倾倒过程的分析发现,砖砌烟囱在倾倒过程中虽然是绕一支点转动倾倒的,但该支点相对静止坐标系是运动的。引起该现象的主要原因在于支点处始终存在一个承压应力集中区,而且应力超过了材料的抗压强度引起了破坏。 In this paper, by analyzing the demolishing of brick chimney by blasting, an important phenomenon in the dumping motion of moderate-strength high-mass structure is discussed. The analysis of the dumping process found that although the brick chimney was dumped around a fulcrum during dumping, the fulcrum was moving relative to the stationary coordinate system. The main reason for this phenomenon is that there is always a compressive stress concentration zone at the fulcrum, and the stress exceeds the compressive strength of the material and causes damage.