单段爆破震动的动态响应分析
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摘要
利用反应谱理论对单段爆破的地震效应进行研究。根据单自由度体系反应谱理论,采用计算量少、精确度高的三角插值解析公式法取代常用的分段线性插值法进行反应谱数值计算;结合工程爆破地震实测资料,对不同爆炸参量下产生的单段爆破震动信号进行反应谱分析,探讨爆炸参量对爆破震动反应谱的影响。研究结果表明,单段爆破产生的震动其频率成分相对简单;单段爆破震动的动态响应特征与爆炸参量有着密切的关系,特别是最大段药量对其影响最大。该方法可用于研究爆破地震效应特别是爆破震动危害控制和预测。
Seismic effect of single-interval-time in millisecond blast was studied by means of response spectrum.Based on response spectrum of system with one degree of freedom,response spectrum was calculated using analytical expression of trigonometric interpolation with great efficiency and high precision in calculation instead of segmented linear interpolation.According to the monitoring data from engineering blast,vibration signals of single-interval-time in millisecond blast with different explosion parameters were analyzed by response spectrum,and the influence of explosion parameters on response spectrum of single-interval-time in millisecond blast was principally explored.The results show that the frequency composition is simple relatively in blast vibration induced by single-interval-time;response characteristics of blast vibration in structure have close relation to explosion parameters,especially,the influence of maximum decking charge.It can be used to study blast seismic effect to control and forecast blast vibration damage.
Seismic effect of single-interval-time in millisecond blast was studied by means of response spectrum.Based on response spectrum of system with one degree of freedom,response spectrum was calculated using analytical expression of trigonometric interpolation with great efficiency and high precision in calculation instead of segmented linear interpolation.According to the monitoring data from engineering blast,vibration signals of single-interval-time in millisecond blast with different explosion parameters were analyzed by response spectrum,and the influence of explosion parameters on response spectrum of single-interval-time in millisecond blast was principally explored.The results show that the frequency composition is simple relatively in blast vibration induced by single-interval-time;response characteristics of blast vibration in structure have close relation to explosion parameters,especially,the influence of maximum decking charge.It can be used to study blast seismic effect to control and forecast blast vibration damage.
引文
[1]张雪亮,黄树棠.爆破地震效应[M].北京:地震出版社,1981.ZHANG Xue-liang,HUANG Shu-tang.Effect of blasting ground vibration[M].Beijing:Earthquake Press,1981.
[2]丁刚德,王伟策,陈小波.微差爆破的爆破地震反应谱分析[J].爆破,1997,14(3):24-29.DING Gang-de,WANG Wei-ce,CHEN Xiao-bo.Analysis on blasting vibration response of short delay blasting[J].Blasting,1997,14(3):24-29.
[3]Kaul M K.Stochastic characterization of earthquake through their response spectrum[J].Earthquake Engineering and Structural Dynamics,1978,6:497-509.
[4]Bismarck-Nasr M N,De Oliveira M.On enhancement of accuracy in direct integration dynamic response problems[J].Earthquake Engineering and Structural Dynamics,1991,20(7):699.
[5]李玉民,倪芝芳.地下工程开挖爆破的地面振动特征[J].岩石力学与工程学报,1997,16(3):274-278.LI Yu-min,NI Zhi-fang.The characteristics on surface vibration of blasting in underground engineering[J].Chinese Journal of Rock Mechanics and Engineering,1997,16(3):274-278.
[6]杨孟刚,胡建华,陈政清.独塔自锚式悬索桥地震响应分析[J].中南大学学报:自然科学版,2005,36(1):133-137.YANG Meng-gang,HU Jian-hua,CHEN Zheng-qing.Seismic response analysis of self-anchored suspension bridge with single-towe[J].Journal of Central South University:Science and Technology,2005,36(1):133-137.
[7]李杰.几类反应谱的概念差异及其意义[J].世界地震工程,1993,9(4):9-14.LI Jie.Several response spectrums’conception difference and their significance[J].World Information on Earthquake Engineering,1993,9(4):9-14.
[8]王祥厚,李明勇.爆破地震效应强度与爆破地震荷载的探讨[J].贵州工业大学学报,2000,29(2):18-22.WANG Xiang-hou,LI Ming-yong.Study on the strength effect and load of blasting vibration[J].Journal of Guizhou University of Technology,2000,29(2):18-22.
[9]陈纬.地震加速度反应谱拟合的直接法研究[J].工程力学,2000,17(1):83-87.CHEN Wei.Direct method of simulating response spectrum of earthquake acceleration[J].Engineering Mechanics,2000,17(1):83-87.
[10]娄建武,龙源,方向,等.基于反应谱值分析的爆破震动破坏评估研究[J].爆炸与冲击,2003,23(1):41-46.LOU Jian-wu,LONG Yuan,FANG Xiang,et al.Study on blasting vibration damage based on response spectrum[J].Explosion and Shock Waves,2003,23(1):41-46.
[11]蔡长青,沈建文.抛物线内插反应谱计算方法[J].世界地震工程,2001,17(1):87-92.CAI Chang-qing,SHEN Jian-wen.Calculation of response spectrum by parabolic interpolation[J].World Information on Earthquake Engineering,2001,17(1):87-92.
[12]朱敏,朱镜清.反应谱计算的三角插值解析公式法[J].世界地震工程,2001,17(3):62-64.ZHU Min,ZHU Jing-qing.Calculation of response spectrum based on trigonometric interpolation[J].World Information on Earthquake Engineering,2001,17(3):62-64.
[13]刘华,王文辉.大朝山单跨拱桥爆破震动速度反应谱特征[J].爆破,2002,19(4):68-70 LIU Hua,WANG Wen-hui.Characteristics of reaction spectra of explosion vibration velocity in blasting the Dachaoshan mono-arch bridge[J].Blasting,2002,19(4):68-70
[14]吴腾芳,王凯,季茂荣.反应谱分析在工程微差爆破地震监测中的应用与研究.兵工学报,1998,19(3):271-274 WU Teng-fang,WANG Kai,JI Mao-rong.Vibrational response spectra in millisecond blasting[J].ACTA Armamentarii,1998,19(3):271-274
[15]何姣云,吴新霞,钱胜国.大坝爆破地震的动力响应计算[J].爆破,2002,19(4):1-3.HE Jiao-yun,WU Xin-xia,QIAN Sheng-guo.Calculation of dynamic response of seism in dam blasting[J].Blasting,2002,19(4):1-3.
[16]胡聿贤.地震工程学[M].北京:地震出版社,1988.HU Yu-xian.Earthquake engineering[M].Beijing:Earthquake Press,1988
[2]丁刚德,王伟策,陈小波.微差爆破的爆破地震反应谱分析[J].爆破,1997,14(3):24-29.DING Gang-de,WANG Wei-ce,CHEN Xiao-bo.Analysis on blasting vibration response of short delay blasting[J].Blasting,1997,14(3):24-29.
[3]Kaul M K.Stochastic characterization of earthquake through their response spectrum[J].Earthquake Engineering and Structural Dynamics,1978,6:497-509.
[4]Bismarck-Nasr M N,De Oliveira M.On enhancement of accuracy in direct integration dynamic response problems[J].Earthquake Engineering and Structural Dynamics,1991,20(7):699.
[5]李玉民,倪芝芳.地下工程开挖爆破的地面振动特征[J].岩石力学与工程学报,1997,16(3):274-278.LI Yu-min,NI Zhi-fang.The characteristics on surface vibration of blasting in underground engineering[J].Chinese Journal of Rock Mechanics and Engineering,1997,16(3):274-278.
[6]杨孟刚,胡建华,陈政清.独塔自锚式悬索桥地震响应分析[J].中南大学学报:自然科学版,2005,36(1):133-137.YANG Meng-gang,HU Jian-hua,CHEN Zheng-qing.Seismic response analysis of self-anchored suspension bridge with single-towe[J].Journal of Central South University:Science and Technology,2005,36(1):133-137.
[7]李杰.几类反应谱的概念差异及其意义[J].世界地震工程,1993,9(4):9-14.LI Jie.Several response spectrums’conception difference and their significance[J].World Information on Earthquake Engineering,1993,9(4):9-14.
[8]王祥厚,李明勇.爆破地震效应强度与爆破地震荷载的探讨[J].贵州工业大学学报,2000,29(2):18-22.WANG Xiang-hou,LI Ming-yong.Study on the strength effect and load of blasting vibration[J].Journal of Guizhou University of Technology,2000,29(2):18-22.
[9]陈纬.地震加速度反应谱拟合的直接法研究[J].工程力学,2000,17(1):83-87.CHEN Wei.Direct method of simulating response spectrum of earthquake acceleration[J].Engineering Mechanics,2000,17(1):83-87.
[10]娄建武,龙源,方向,等.基于反应谱值分析的爆破震动破坏评估研究[J].爆炸与冲击,2003,23(1):41-46.LOU Jian-wu,LONG Yuan,FANG Xiang,et al.Study on blasting vibration damage based on response spectrum[J].Explosion and Shock Waves,2003,23(1):41-46.
[11]蔡长青,沈建文.抛物线内插反应谱计算方法[J].世界地震工程,2001,17(1):87-92.CAI Chang-qing,SHEN Jian-wen.Calculation of response spectrum by parabolic interpolation[J].World Information on Earthquake Engineering,2001,17(1):87-92.
[12]朱敏,朱镜清.反应谱计算的三角插值解析公式法[J].世界地震工程,2001,17(3):62-64.ZHU Min,ZHU Jing-qing.Calculation of response spectrum based on trigonometric interpolation[J].World Information on Earthquake Engineering,2001,17(3):62-64.
[13]刘华,王文辉.大朝山单跨拱桥爆破震动速度反应谱特征[J].爆破,2002,19(4):68-70 LIU Hua,WANG Wen-hui.Characteristics of reaction spectra of explosion vibration velocity in blasting the Dachaoshan mono-arch bridge[J].Blasting,2002,19(4):68-70
[14]吴腾芳,王凯,季茂荣.反应谱分析在工程微差爆破地震监测中的应用与研究.兵工学报,1998,19(3):271-274 WU Teng-fang,WANG Kai,JI Mao-rong.Vibrational response spectra in millisecond blasting[J].ACTA Armamentarii,1998,19(3):271-274
[15]何姣云,吴新霞,钱胜国.大坝爆破地震的动力响应计算[J].爆破,2002,19(4):1-3.HE Jiao-yun,WU Xin-xia,QIAN Sheng-guo.Calculation of dynamic response of seism in dam blasting[J].Blasting,2002,19(4):1-3.
[16]胡聿贤.地震工程学[M].北京:地震出版社,1988.HU Yu-xian.Earthquake engineering[M].Beijing:Earthquake Press,1988
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