地震动反应谱时程变化特性研究

英文篇名：Research on the time-varying response spectrum method of seismic dynamic responses
中文刊名：水力发电学报
英文刊名：Journal of Hydroelectric Engineering
作者：钱胜国 ; 张练 ; 卢波
英文作者：QIAN Shengguo ; ZAHNG Lian ; LU Bo(Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources ; Changjiang River Scientific Research Institute ; Wuhan 430010)
中文关键词：地震学 ; 地震动反应谱 ; 反应谱阵 ; 响应分析反应谱阵法 ; 反应谱时变特性
英文关键词：seismology ; response spectrum of seismic osillation ; response spectrum matrix ; response analysis of response spectrum matrix ; time-variation of response spectrum
出版日期：2009-10-25
机构：长江科学院水利部岩土力学与工程重点实验室;
年：2009
期：05
出版单位：水力发电学报

摘要

基于动力学问题随时间变化的性质,用单自由度体地震动时程反应按时段构建反应谱阵来表征反应谱的谱形态、谱峰值、谱峰频率随时间变化的非平稳特性,其时变特性在谱阵中得到了很好的反映;用这种时程反应谱阵计算的动力反应,与逐步积分法得出的结果相比,反应时程包络线是一致的,而且各时段幅值大小变化规律也相同;响应的值小于"规范"谱法,大于时程法,介于二者之间,符合理论规律。
A new method is put forward to establish the response spectrum arrays of time-varying seismic dynamical response by means of time-interval of SDOF(Single-Degree-Of-Freedom) time-history seismic reaction.In comparison with the traditional method,a prominent feature of these arrays is a better representation of the non-stationary time-varying characteristics of the response spectrum,such as the types,peak values and peak frequencies.Results show that the envelope lines of response time history are identical to the ones of step-by-step integration,and that the trends of amplitude variation with time are also identical.The values of response spectrum are smaller than the standard spectrum computations and greater than the time-history method,which is consistent with the theoretical prediction.

引文

[1]RW Clough,J Penzien,王光远等译.结构动力学[M].北京:科学出版社,1981.RW Clough,J Penzien,WANG Guangnian.Dynamics of structures[M].Beijing:Science Press,1981.(in Chinese)
[2]GB50011-2001.建筑抗震设计规范[S].GB50011-2001.Code for seismic design of building[S].(in Chinese)
[3]DL5073-2000.水工建筑物抗震设计规范[S].DL5073-2000.Specifications for seismic design of hydraulic structures[S].(in Chinese)