摘要
在高层建筑物爆破拆除中,塌落体触地冲击地面引起的震动往往成为拆除爆破负面效应控制的关键因素之一。从动力平衡方程出发,运用波动理论和动量守恒定理,建立了计算触地震动的等效集总单自由度震动模型。该模型从理论上揭示了触地诱发震动的产生机理,反映了触地震动的衰减规律,与数值模拟和工程实践吻合。
In the course of demolition of high building by blasting,the vibration caused by the collapse hitting is usually one of the prodominant factors to control the side effect of demolition blasting.From the viewpoint of dynamic equilibrium equation, the wave theory and momentum conservation theory are used to establish a vibration model to calculate an equivalent integral freedom caused by hitting vibration. The mode can theoretically reveal the mechanism of collapse hitting vabration and reflect the wave attenuation law. The numerical simulation fits the practical engineering.
出处
《爆破》
CSCD
2005年第1期25-29,共5页
Blasting
关键词
建筑物
触地震动
震动模型
爆破拆除
building
demolition blasting
collapse hitting vibration
vibration model
