爆破地震作用下建(构)筑物安全标准探讨
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摘要
基于爆破地震效应的2个重要的因素:爆破地震本身的特性和爆破震动作用下建(构)筑物的结构响应特性,运用MATLAB小波分析工具箱的平台,利用现代的信号分析处理手段,从能量的角度出发,研究建(构)筑物在爆破震动作用下的能量响应,推导出响应速度的计算,探讨建立响应速度做为爆破震动安全评价指标。并结合工程实例说明了此方法比振速-频率相关的双因素安全判据更加有效。
Based on the two important factors of blasting seismic effects:the trait of blasting vibration itself and the structural response characteristics of construction(structure) of building under blasting vibration;using MATLAB wavelet analysis toolbox as platform,and making use of modern means of dealing with the signal analysis;from the perspective of energy,studying the energy response of construction(structure) of building under blasting vibration,to deduce the calculation of the response rate,and try to use the response rate as the safety evaluation index about blasting vibration.Through working with engineering examples has proven that this method was more effective than the two-factor(velocity-frequency) security-related criteria.
Based on the two important factors of blasting seismic effects:the trait of blasting vibration itself and the structural response characteristics of construction(structure) of building under blasting vibration;using MATLAB wavelet analysis toolbox as platform,and making use of modern means of dealing with the signal analysis;from the perspective of energy,studying the energy response of construction(structure) of building under blasting vibration,to deduce the calculation of the response rate,and try to use the response rate as the safety evaluation index about blasting vibration.Through working with engineering examples has proven that this method was more effective than the two-factor(velocity-frequency) security-related criteria.
引文
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[8]邹海清,宋光明.建筑物爆破震动危害机制及破坏判据的确定[J].采矿技术,2005,5(2):87-89.
[2]刘满堂,陈庆寿.建筑结构对爆破地震的动力响应特性研究[J].爆破,2005,22(4):23-27.
[3]林大超,施惠基,白春华,等.基于小波变换的爆破震动时频特征分析[J].岩石力学与工程学报,2004,23(1):101-106.
[4]凌同华,李夕兵.最大段药量对爆破震动信号频带能量分布的影响[J].采矿技术,2003,3(4):21-23.
[5]秦叶,陈新度,冯文贤.小波基的选择与震动信号分析[J].广东工业大学学报,1997,14(4):57-60.
[6]中国生.基于小波变换爆破震动分析的应用基础研究[D].长沙:中南大学,2006.
[7]李洪涛.基于能量原理的爆破地震效应研究[D].武汉:武汉大学,2007.
[8]邹海清,宋光明.建筑物爆破震动危害机制及破坏判据的确定[J].采矿技术,2005,5(2):87-89.
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