爆破地震地面运动的演变功率谱密度函数分析
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摘要
按照Priestly提出的演变随机过程理论,对非平稳随机过程的演变功率谱密度函数进行了理论推导,并给出了定义。在此基础上,建立了基于均匀调制随机过程的爆破地震动演变功率谱密度函数。经对比发现,理论模型计算值与实验测试结果具有较好的一致性。
According to Priestly evolutionary random process theory, the evolutionary power spectra density function of nonstationary random process is presented by theory method. By means of nonstationary random evolutionary theory, the evolutionary power spectra density function of blasting seismic is suggested on the basis of uniformity modulating random process. Compared with experimental results, the suggested theoretical models are coincided with experimental phenomena and data.
According to Priestly evolutionary random process theory, the evolutionary power spectra density function of nonstationary random process is presented by theory method. By means of nonstationary random evolutionary theory, the evolutionary power spectra density function of blasting seismic is suggested on the basis of uniformity modulating random process. Compared with experimental results, the suggested theoretical models are coincided with experimental phenomena and data.
引文
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[2]李蓓蓓.振动分析的有效工具———功率谱密度[J].包装工程,2004,25(3):46-50.LI Bei-bei.The effective tool of vibration analysis—Power spectral density[J].Packaging Engineering,2004,25(3):46-50.
[3]曾德斌,林大超,熊祖钊,等.单自由度系统的爆炸地震演变响应[J].爆炸与冲击,2002,22(1):46-51.ZENG De-bin,LIN Da-chao,XIONGZu-zhao,et al.Nonstationary randomresponse of SDOFsystemto evolution-ary randomexplosion seismic excitation[J].Explosion and Shock Waves,2002,22(1):46-51.
[4]Nigam N C,Naraynan S.Applications of randomvibration[M].Berlin:Springer-Verlag,1994:296-303.
[5]Shinozuka M,Sato Y.Si mulation of non-stationary random process[J].Journal of Engineering Mechanics,1967,93(4):11-40.
[6]国胜兵,潘越峰,高培正,等.爆炸地震波模拟研究[J].爆炸与冲击,2005,25(4):335-340.GUO Sheng-bing,PAN Yue-feng,GAO Pei-zheng,et al.Numerical si mulation of explosion seismic waves[J].Ex-plosion and Shock Waves,2005,25(4):335-340.
[7]Lin Y K,Yong Y.Evolutionary Kanai-Taji mi earth-quake models[J].Journal of Engineering Mechanics,1987,113(8):1119-1137.
[8]Bolinger G A.爆炸振动分析[M].刘锡荟,熊建国,译.北京:科学出版社,1975:7-12.
[9]Henrych J.爆炸动力学及其应用[M].熊建国,译.北京:科学出版社,1987:10-26.
[10]林大超.爆炸地面振动的随机演变理论及应用研究[D].北京:北京理工大学,2001:36-41.
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