上海中环中心高层群楼拆除爆破振动测试分析  

Test and Analysis of Blasting Vibration for High Buildings Demolition in Shanghai Central Center

作　　者：刘文广 苏波 

机构地区：[1]上海消防技术工程有限公司,上海 [2]广西新港湾工程有限公司,广西 防城港

出　　处：《土木工程》2021年第7期695-703,共9页Hans Journal of Civil Engineering

摘　　要：通过对上海中环中心高层群楼拆除爆破振动测试,分析了拆除爆破产生的地震波频谱特性、加速度时程曲线和振动速度时程曲线,分析得到:爆破振动速度峰值和加速度峰值均小于安全阈值,总体随着爆心距的增加而减小;振动信号主频均在5~8 Hz之间,与建(构)筑物固有频率范围0~12 Hz非常接近,易引起共振产生破坏效应,因此必须采取有效的减震防护措施。Based on the demolition blasting vibration test of high-rise buildings in Shanghai Central Center, the frequency spectrum characteristics of seismic wave, time history curve of acceleration and time history curve of vibration velocity generated by demolition blasting are analyzed. The results show that the peak value of blasting vibration velocity and acceleration are both less than the safety threshold, and generally decrease with the increase of the distance from the blast center. The main frequency of the vibration signals is between 5~8 Hz, which is very close to the natural frequency range of 0~12 Hz of the building (structure). Therefore, it is easy to cause resonance and damage effects. Therefore, effective damping and protection measures must be taken.

关 键 词：拆除爆破 爆破振动 塌落振动 主频 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]