利用数字化速度记录仿真加速度时程与合成场地设计地震波
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摘要
研究利用测震台网数字化宽频带速度型记录仿真加速度时程,并通过提取其相位信息和拟合场地设计反应谱(目标谱)的方法来获得场地设计地震波的有关技术途径与应用实例,所提供的具体算式采用便于编程和利用快速傅氏变换(FFT)技术进行计算的离散化傅氏正逆变换的复数表达式。有关研究结果可拓宽现有地震观测资料的使用价值,减少地面运动模拟中人造地震波与原始地震记录存在的差异,并可使所合成的设计地震波满足给定的目标谱,且能较好地反映其非平稳性特征,因此在地震工程中具有实际的应用价值。
In this paper, a method for simulating acceleration records from the digital broad-band velocity type records of seismograph network is studied. Through extracting phase information and generating the site design response spectrum, the concerned technique approach for site design earthquake is obtained. An earthquake record was taken as an application example for analysis and processing. FFT technique is applied in the calculation. The result can generalize the application of velocity type records of the digital seismograph network, and can significantly reduce the difference between the generation of artificial seismic wave and records from a real seismic wave. In addition, the simulated seismic wave can be designed to satisfy given target spectrum and reflect its instability both on time and frequency domain. Therefore, it provides a practical and valuable application in the earthquake engineering.
In this paper, a method for simulating acceleration records from the digital broad-band velocity type records of seismograph network is studied. Through extracting phase information and generating the site design response spectrum, the concerned technique approach for site design earthquake is obtained. An earthquake record was taken as an application example for analysis and processing. FFT technique is applied in the calculation. The result can generalize the application of velocity type records of the digital seismograph network, and can significantly reduce the difference between the generation of artificial seismic wave and records from a real seismic wave. In addition, the simulated seismic wave can be designed to satisfy given target spectrum and reflect its instability both on time and frequency domain. Therefore, it provides a practical and valuable application in the earthquake engineering.
引文
胡聿贤,何训.1989.考虑相位谱的人造地震动反应谱拟合[M].见:地震小区划——理论与实践.北京:地震出版社,93~105
霍俊荣,胡聿贤,冯启民.1991.地面运动时程强度包络函数的研究[J].地震工程与工程振动,11(3):1~12
何少林,李海亮.1997.数字地震数据的处理研究——真实地面运动的复原[J].地震地磁观测与研究,18(6):52~58
金星,马强,李山有.2004.利用数字化速度记录实时仿真位移与加速度时程[J].地震工程与工程振动,24(6):9~14
金星,马强,李山有.2003.四种计算地震反应数值方法的比较研究[J].地震工程与工程振动,23(1):18~30
刘瑞丰,陈培善,党京平等.1997.宽频带数字地震记录仿真的应用[J].地震地磁观测与研究,18(3):7~12
刘小弟,苏经宇.1992.具有天然地震特征的人工地震波研究[J].工程抗震,3:33~36
林建生,陈俊峰,林子健等.2006.场地地震安全性评价中确定设计地震动参数方面若干问题的研究[J].世界地震工程22(4)
林建生.1988.闽台地区震相特征分析[J].地震地磁观测与研究,9(2):20~26
姚兰予,聂永安,赵靖华等.2004.利用强震台网记录获得加速度波形的方法研究[J].中国地震,20(1):39~46
中华人民共和国国家标准.2005.工程场地地震安全性评价(GB17741-2005)[S].北京:中国标准出版社
中华人民共和国国家标准.2001.建筑抗震设计规范(GB50011-2001)[S].北京:中国建筑工业出版社
中华人民共和国国家标准.2001.中国地震动参数区划图(GB18306-2001)[S].北京:中国标准出版社
Hadjian A H.1972.Scaling of earthquake accelerograms-a si mplified approach[J].ASCE,98(ST2):547~551
Kanamori H,Maechling P,Hauksson E.1999.Continuous monitoring of strong motion parameters[J].BSSA,89(1):311~316
Kaul M K.1978.Stochastic characterization of earthquakes through their response spectrum[J].EESD,6(5):497~509
Scanlan R H,Sachs k.1974.Earthquake ti me histories and response spectra[J].J of Eng Mech Div,ASCE,100(EM4):635~654
Seed HB et al.1969.Characteristics of rock motions during earthquakers[J].ASCE,95(SM5):1199~1218
霍俊荣,胡聿贤,冯启民.1991.地面运动时程强度包络函数的研究[J].地震工程与工程振动,11(3):1~12
何少林,李海亮.1997.数字地震数据的处理研究——真实地面运动的复原[J].地震地磁观测与研究,18(6):52~58
金星,马强,李山有.2004.利用数字化速度记录实时仿真位移与加速度时程[J].地震工程与工程振动,24(6):9~14
金星,马强,李山有.2003.四种计算地震反应数值方法的比较研究[J].地震工程与工程振动,23(1):18~30
刘瑞丰,陈培善,党京平等.1997.宽频带数字地震记录仿真的应用[J].地震地磁观测与研究,18(3):7~12
刘小弟,苏经宇.1992.具有天然地震特征的人工地震波研究[J].工程抗震,3:33~36
林建生,陈俊峰,林子健等.2006.场地地震安全性评价中确定设计地震动参数方面若干问题的研究[J].世界地震工程22(4)
林建生.1988.闽台地区震相特征分析[J].地震地磁观测与研究,9(2):20~26
姚兰予,聂永安,赵靖华等.2004.利用强震台网记录获得加速度波形的方法研究[J].中国地震,20(1):39~46
中华人民共和国国家标准.2005.工程场地地震安全性评价(GB17741-2005)[S].北京:中国标准出版社
中华人民共和国国家标准.2001.建筑抗震设计规范(GB50011-2001)[S].北京:中国建筑工业出版社
中华人民共和国国家标准.2001.中国地震动参数区划图(GB18306-2001)[S].北京:中国标准出版社
Hadjian A H.1972.Scaling of earthquake accelerograms-a si mplified approach[J].ASCE,98(ST2):547~551
Kanamori H,Maechling P,Hauksson E.1999.Continuous monitoring of strong motion parameters[J].BSSA,89(1):311~316
Kaul M K.1978.Stochastic characterization of earthquakes through their response spectrum[J].EESD,6(5):497~509
Scanlan R H,Sachs k.1974.Earthquake ti me histories and response spectra[J].J of Eng Mech Div,ASCE,100(EM4):635~654
Seed HB et al.1969.Characteristics of rock motions during earthquakers[J].ASCE,95(SM5):1199~1218
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