基于相位差谱合成时频非平稳地震波
|
摘要
人工合成满足工程需要的地震波一直是动力分析中的重要课题。分析了实测波相位角和相位差的分布形式。介绍了基于相位差谱合成人工波的过程,包括初始波生成、初始波修正和基线修正。并以此编制人工地震波合成程序。利用已有地震波的相位差谱和反应谱合成新地震波,得到的地震波与原地震波趋势十分相似。验证了该方法的可行性和程序的正确性。最后结合实际工程,利用该方法合成满足工程需要的人工波。
The synthesis of seismic wave which can satisfy the engineering demand is an important subject in dynamic analysis.The distribution forms of phase angle and phase difference is analyzed,and the process of synthesizing artificial waves based on the phase difference spectrum is introduced as well,including the initial wave generation,initial wave correction and baseline correction and then the program about the synthesis of artificial seismic waves is compiled.The new seismic wave is synthesized by the phase difference spectrum and response spectrum of a existing seismic wave and the wave is very similar to the existing one,proving the feasibility of this method and correctness of program.Finally,combined with practical engineering,the artificial wave which meets the engineering demand is synthesized by this method.
The synthesis of seismic wave which can satisfy the engineering demand is an important subject in dynamic analysis.The distribution forms of phase angle and phase difference is analyzed,and the process of synthesizing artificial waves based on the phase difference spectrum is introduced as well,including the initial wave generation,initial wave correction and baseline correction and then the program about the synthesis of artificial seismic waves is compiled.The new seismic wave is synthesized by the phase difference spectrum and response spectrum of a existing seismic wave and the wave is very similar to the existing one,proving the feasibility of this method and correctness of program.Finally,combined with practical engineering,the artificial wave which meets the engineering demand is synthesized by this method.
引文
1 Ohsaki Y.On the significance of phase content in earthquake groundmotions.Earthquake Engineering Structural Dynamics,1979;7(5):427—439
2赵凤新,胡聿贤.地震动非平稳性与幅值谱和相位差谱的关系.地震工程与工程振动,1994;14(2):5
3朱昱,冯启民.相位差谱的分布特征和人造地震动.地震工程与工程振动,1992;3,12(1):37—44
4谭俊林,张文孝,王增光.用相位差谱统计规律探讨人造地震动方法.内陆地震,2006;3,20(Ⅰ):40—47
5牛志国,李同春,王亚莉.基于水工设计反应谱的人工地震波合成.2007全国大坝抗震防灾高级学术研讨会交流论文,2007;11:39—45
6胡聿贤,何训.考虑相位谱的人造地震动反应谱拟合.地震工程与工程振动,1986;6,6(2):37—51
7胡汛训.地震动输入及动力人工边界的数值模拟方法研究.南京:河海大学硕士学位论文,2007
2赵凤新,胡聿贤.地震动非平稳性与幅值谱和相位差谱的关系.地震工程与工程振动,1994;14(2):5
3朱昱,冯启民.相位差谱的分布特征和人造地震动.地震工程与工程振动,1992;3,12(1):37—44
4谭俊林,张文孝,王增光.用相位差谱统计规律探讨人造地震动方法.内陆地震,2006;3,20(Ⅰ):40—47
5牛志国,李同春,王亚莉.基于水工设计反应谱的人工地震波合成.2007全国大坝抗震防灾高级学术研讨会交流论文,2007;11:39—45
6胡聿贤,何训.考虑相位谱的人造地震动反应谱拟合.地震工程与工程振动,1986;6,6(2):37—51
7胡汛训.地震动输入及动力人工边界的数值模拟方法研究.南京:河海大学硕士学位论文,2007
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