建筑物对爆破振动中不同频率能量成分的响应特征

李洪涛;舒大强;卢文波;朱传云

振动与冲击 ›› 2010, Vol. 29 ›› Issue (2) : 154-158.

PDF(1687 KB)
PDF(1687 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (2) : 154-158.
论文

建筑物对爆破振动中不同频率能量成分的响应特征

  • 李洪涛1;舒大强2;卢文波2;朱传云2
作者信息 +

Response characteristics of structures to the different energy components of blasting vibration

  • LI Hong-tao1;SHU Da-qiang2;LU Wen-bo2;ZHU Chuan-yun2
Author information +
文章历史 +

摘要

爆破地震对建筑物的影响实质上是一种能量的传递与转化过程,这种传递与转化的过程受到建筑物动力特性的影响。利用结构动力学理论,结合典型工程实例,研究了建筑物对爆破地震中不同频率能量成分的响应特征,结果表明:建(构)筑物对于爆破振动中的不同频率能量成分存在明显的选择放大效应。在爆破地震中,与结构固有频率相一致的能量成分将被最大程度的放大。在制定爆破振动安全判据时,要将爆破地震自身特征和建筑物动力特性更好的结合起来,重视爆破振动中与建筑物固有频率相对应的能量大小。

Abstract

The effect of blast-induced seismic on structures can be considered as a transferred and transformed process of the energy, which relates to the dynamic response of structures. Based on structure dynamic theory, the response characteristics of structures to the different energy components of blasting vibration are studied with a typical example project. The result shows that the amplification effect of the structures to energy content with different frequency is obviously selective. Further discussion about the safety criterion considering the effect of frequency shows that when the safety criterion for blasting vibration is proposed, it is necessary to give consideration to both characteristics of blast-induced seismic and dynamic response characteristics of structures, and the energy component of blasting vibration which has the same frequency as the structure must be paid more attention to.

关键词

爆破振动 / 建筑物 / 能量 / 响应 / 频率

Key words

blasting vibration / structure / energy / response / frequency

引用本文

导出引用
李洪涛;舒大强;卢文波;朱传云. 建筑物对爆破振动中不同频率能量成分的响应特征[J]. 振动与冲击, 2010, 29(2): 154-158
LI Hong-tao;SHU Da-qiang;LU Wen-bo;ZHU Chuan-yun . Response characteristics of structures to the different energy components of blasting vibration [J]. Journal of Vibration and Shock, 2010, 29(2): 154-158

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