桥礅柱定向倒塌拆除爆破后坐分析

Analyses of Recoil in Demolishing the Pier of Bridge by Directional Blasting

根据建筑物拆除爆破失稳原理,对桥礅柱定向倒塌控制爆破拆除试爆时产生后坐进行力学分析,得出试爆产生后坐的主要原因是保留支撑截面瞬间强度不够,调整主爆相关参数,使主爆达到预期效果。

In the light of the principle of unbalance in demolition blasting under directional control, the mechanial recoil in the trial blasting of the highway bridge′s abutment to be demolished by blasting under directional control is analyzed, the reasons were explained, and the blasting parameters were adjusted to achieve an ideal result.