拟合多阻尼比目标反应谱的高精度地震动调整方法
|
摘要
基于地震动调整效果的衡量指标比较了时域合成法和时频分析法的优缺点,在推导阿里亚斯强度与绝对加速度反应谱定量关系的基础上,将时域叠加小波函数法和时频小波分析调整法相结合,提出了一种能保留地震动强非平稳特性、对真实地震动相位差谱改动较少、能同时拟合多阻尼比目标反应谱的高精度地震动调整方法,并通过拟合美国规范D-V-A联合谱的算例证明了该方法的精度和通用性。
According to the measure index for modification effect of ground motion,both advantages and disadvantages of two methods which called Time Domain Synthesis(TDS) and Time-Frequency Analysis(TFA) are compared.Based on the calculation of quantitative relationship between Arias Intensity and absolute acceleration response spectrum,a new method combined TDS and TFA is proposed for fitting multi-damping-ratio design target spectrum.The results indicate that the new method can retain the strong non-stationary characteristic of earthquake ground motion and decrease the change of real phase difference spectrum.The simulation results of D-V-A combined spectrum shows the new method is practicable and takes precedence over the traditional methods in accuracy.
According to the measure index for modification effect of ground motion,both advantages and disadvantages of two methods which called Time Domain Synthesis(TDS) and Time-Frequency Analysis(TFA) are compared.Based on the calculation of quantitative relationship between Arias Intensity and absolute acceleration response spectrum,a new method combined TDS and TFA is proposed for fitting multi-damping-ratio design target spectrum.The results indicate that the new method can retain the strong non-stationary characteristic of earthquake ground motion and decrease the change of real phase difference spectrum.The simulation results of D-V-A combined spectrum shows the new method is practicable and takes precedence over the traditional methods in accuracy.
引文
[1]胡聿贤.地震工程学(第二版)[M].北京:地震出版社,2006.
[2]Lihanand K,Tseng W S.Development and application of real-istic earthquake time histories compatible with multi-dampingdesign spectra[A]∥9WCEE Organizing Committee.Proceed-ings of the 9th World Conference on Earthquake EngineeringⅡ[C].Tokyo Japan:[s.n.],819-824.
[3]蔡长青,沈建文.人造地震动的时域叠加法和反应谱整体逼近技术[J].地震学报,1997,19(1):71-78.
[4]田玉基,杨庆山.多阻尼比设计反应谱的非平稳地震动场拟合[J].振动与冲击,2010,29(1):43-48.
[5]贺瑞,秦权.产生时程分析用的高质量地面运动时程的新方法[J].工程力学,2006,8(8):12-19.
[6]谢异同,张同亿,吴敏哲.时程分析中设计地震动调整的小波分析方法[J].地震工程与工程振动,2002,3(6):19-23.
[7]刘小弟,苏经宇.具有天然地震特征的人工地震波研究[J].工程抗震,1992,(3):33-36.
[8]王君杰,周晶.地震动频谱非平稳性对结构非线性反应的影响[J].地震工程与工程振动,1997,17(2):16-20.
[9]施卫星,刘凯雁,王立志.网架减震球型钢支座减震性能振动台试验研究[J].西北地震学报,2009,31(4):344-347.
[10]赵凤新,胡聿贤.地震动的非平稳性与幅值谱和相位谱的关系[J].地震工程和工程振动,1994,2(2):1-6.
[11]Hancock J,Watson-Lamprey J,Abrahamson N A,et al.An improved method of matching response spectra of recordearthquake ground motion using wavelets[J].Journal ofEarthquake Engineering,2006,10(1):67-89.
[12]Zhao F-x,Zhang Y-s.Artificial ground motion compatiblewith specified peak velocity and target spectrum[J].ActaSeismologica Sinica,2006,19(4):461-471.
[13]廖振鹏,魏颖.设计地震加速度图的合成[M].北京:地震出版社,1989.
[2]Lihanand K,Tseng W S.Development and application of real-istic earthquake time histories compatible with multi-dampingdesign spectra[A]∥9WCEE Organizing Committee.Proceed-ings of the 9th World Conference on Earthquake EngineeringⅡ[C].Tokyo Japan:[s.n.],819-824.
[3]蔡长青,沈建文.人造地震动的时域叠加法和反应谱整体逼近技术[J].地震学报,1997,19(1):71-78.
[4]田玉基,杨庆山.多阻尼比设计反应谱的非平稳地震动场拟合[J].振动与冲击,2010,29(1):43-48.
[5]贺瑞,秦权.产生时程分析用的高质量地面运动时程的新方法[J].工程力学,2006,8(8):12-19.
[6]谢异同,张同亿,吴敏哲.时程分析中设计地震动调整的小波分析方法[J].地震工程与工程振动,2002,3(6):19-23.
[7]刘小弟,苏经宇.具有天然地震特征的人工地震波研究[J].工程抗震,1992,(3):33-36.
[8]王君杰,周晶.地震动频谱非平稳性对结构非线性反应的影响[J].地震工程与工程振动,1997,17(2):16-20.
[9]施卫星,刘凯雁,王立志.网架减震球型钢支座减震性能振动台试验研究[J].西北地震学报,2009,31(4):344-347.
[10]赵凤新,胡聿贤.地震动的非平稳性与幅值谱和相位谱的关系[J].地震工程和工程振动,1994,2(2):1-6.
[11]Hancock J,Watson-Lamprey J,Abrahamson N A,et al.An improved method of matching response spectra of recordearthquake ground motion using wavelets[J].Journal ofEarthquake Engineering,2006,10(1):67-89.
[12]Zhao F-x,Zhang Y-s.Artificial ground motion compatiblewith specified peak velocity and target spectrum[J].ActaSeismologica Sinica,2006,19(4):461-471.
[13]廖振鹏,魏颖.设计地震加速度图的合成[M].北京:地震出版社,1989.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心