建筑物对爆炸地震波传播的影响

The Influence of Buildings on the Propagation of Explosive Seismic Waves

爆炸地震波传播会受环境介质等因素的影响,从厂房防护和炸药储存安全距离方面考虑,了解建筑物对爆炸地震波传播造成的影响很有必要。通过建立钢筋混凝土厂房模型,在模型外部及内部进行爆炸试验并测得相应的地震波信号,对其峰值速度拟合以及采用小波包变换的分析方法,研究建筑结构对地震波传播峰值速度和振动频率的影响。由于建筑结构的存在,改变了地震波传播的环境介质,使其峰值速度产生了较大的衰减,频率中高频成分所含能量减少。研究补充了建筑结构对爆炸地震波传播造成的影响,为炸药生产厂房及储存仓库安全距离的判定提供了参考依据。

Explosion seismic wave propagation will be affected by factors such as environmental media.It is necessary to understand the impact of building on the explosion seismic wave propagation from the perspective of plant protection and explosive storage safety distance.Through the establishment of the reinforced concrete building model,the external and internal explosion experiments were carried out and the corresponding seismic wave signals were measured.The influence of the building structure on the propagation of seismic wave peak velocity and vibration frequency was studied by fitting the peak velocity and using the wavelet packet transform ana-lysis method.Due to the existence of the building structure,The environmental medium in which seismic waves propagate is changed.The peak velocity is greatly attenuated.The energy contained in the dominant frequency and the high frequency component is reduced.The research supplements the influence of the building structure on the propagation of explosion seismic waves and provides a reference for the determination of the safety distance of explosive production plants and storage warehouses.