Mechanical Analysis of Structare Controlled Blasting
A structare controlled blasting mechanical model based on the kinematics and dynamics theory, was developed to study mechanical characteristics of the falling structure under constant constrains. The constrained particles and their generalized coordinates that are built on instantaneous imaginary displacement were first put forward in this paper. The accurate blasting sections and their delay time are determined by calculating and analyzing the DOF of particles. In other way, the forced vibration of the falling beam and slab were induced by combining blasting time lag with load distribution. Then the building could be crushed and disintegrated more fully with a cushioning effect. The cases showed that the mechanical analysis was correct and could be used for theoretical basis of programming and dynamic simulation of blasting demolition.
controlled blasting mechanical model imaginary displacement forced vibration
SHI Juqiang ZHOU Bin
Southwest Jiaotong University, Chengdu, China
国际会议
The Asian-Pacific Symposium on Blasting Techniques(亚洲太平洋地区爆破技术研讨会)
昆明
英文
308-310
2007-05-08（万方平台首次上网日期，不代表论文的发表时间）