【摘要】 为了考虑不同阻尼比对强度折减系数的影响,通过弹塑性动力时程分析,采用424条国内外的地震波记录,运用理想弹塑性双线性模型对阻尼比为0.01到0.10的不同体系进行计算分析。结果表明阻尼比对强度折减系数的影响比较显著。其中周期对阻尼比影响系数Rξ的影响较大,延性和场地土类别等条件对阻尼比影响系数Rξ的影响较小,并就不同阻尼比对强度折减系数的影响作了拟合。可为抗震设计提供有益的参考。更多还原

【Abstract】 In order to consider the different damping influence on strength-reduction factor,the paper makes the computational analyses on the different damping ratio system of 0.01-0.10 by employing a total of 424 seismic waves,the nonlinear time-history dynamic analysis and the perfectly elastoplatic bilinear model.The results demonstrate that the effect of damping ratio on strength-reduction factor is obvious,the period greatly influences the damping ratio influence factor Rξ,whereas the effect of ductility and soil condition is slight.In the paper,considering the influence of different damping on strength-reduction factor,a fitting expression is obtained.The results will provide a valuable reference to the seismic design.更多还原