【摘要】 将选择的591条美国、日本及我国台湾地区的强震记录按照我国现行建筑抗震设计规范中的规定进行场地分类。利用这些强震记录,统计得到了对应Ⅰ、Ⅱ、Ⅲ、Ⅳ四类场地,阻尼比ξ=0.02、0.05、0.10、0.15、0.20、0.30,自振周期从0.05s到10.0s,周期间隔为0.05s的各周期点的弹性位移反应谱的衰减关系,探讨了震级、断层距、场地类别、阻尼比等对弹性位移反应谱影响。文中结果为我国开展基于性能的结构抗震设计提供了可供选择的位移反应谱的预测公式。更多还原

【Abstract】 Based on the classified site criterion in current seismic design code of building( GB50011-2010),591 accelerograms from the strong-motion databank of the US,Japen and Taiwan( China) are classified into four groups corresponding to four site classes in China. Using the selected accelerograms,the empirical equations in four kinds of sites are presented for the prediction of displacement response ordinates for damping ratios of 2,5,10,20 and30% of critical and for response periods up to 10 s. The influence of magnitude,site class,source-to-site and damping ratio on displacement response spectra is discussed by using new equations. The attenuation relations provide a basis for estimating the design ground motion parameters on different kind of sites in China.更多还原