高层楼房控制爆破倒塌过程中竖向断裂的力学分析

The Mechanical Analysis of the Rupture at Vertical of High-rise Building during the Demolition by Controlled Blasting

针对高层框架剪力墙结构楼房具有高宽比较小的特点,充分考虑到该楼房的结构特征和楼房周围环境的局限性,该爆破方案中设计了提高炸高和前移转铰点的方法,按照设计方案经过精心施工,该楼房被成功实施了爆破拆除。但是该楼房在爆破拆除过程中出现竖向断裂的现象,该文针对这一问题进行了分析,并重点对爆破后构件所受的压力、剪力、弯矩进行了计算和校核,从爆破瞬间构件受承载力的角度探讨了原因。

Aimed at the characteristic of the high-rise building with frame class whose tallness-width ratio is much smaller, the framework character and surrounding localization of the building were taken into account adequately, some methods to enhance blasting highness and shift the point forth where the construction relates were planed in this scheme. With constructing according to the design exquisitely, the building was successfully demolished by controlled blasting. But as the phenomena of rupture at vertical of the high-rise building during its demolition by controlled blasting appeared, this problem was analysed in the paper, and the compressive stress, shearing force and bending moment were calculated and verified as emphasized, the causation was discussed by carrying capacity of the component when demolished.