中文摘要：

目前大量用于进行土层非线性地震反应分析的等效线性化方法在考虑大震作用时，会出现过大的“共振”效应，造成对地表地震反应的误估。故常采用时域积分方法弥补其缺陷，而土体动力本构模型是决定时域积分方法优劣的关键。在此前的工作中，已提出了一种针对阻尼比拟合的修正UE土体动力本构模型，为验证修正UE模型在进行土层地震反应分析时的有效性及优越性，同时采用等效线性化方法及嵌有不同本构模型的时域积分方法进行了响瞠台阵场地的一维土层非线性地震反应分析，并将不同方法下的计算结果与实际记录进行了对比分析。最后，通过计算分析证明了修正UE模型对响瞠台阵地表地震反应的估计结果是客观有效的。

英文摘要：

Nowadays, equivalent linearization methods are widely used to analyze the nonlinear seismic response of soil layer. However, when taking account of the influence of large earthquake events, Most of them will bring the remarkable ＂resonance＂ effect, which result in the mistakes in the evaluation of the surface responses. To over- come the shortage, it is recommended to use time -domain integral method, where the soil dynamic constitutive model is the key factor. In previous work, a modified UE model used to fit damping ratio has been proposed. In this paper, in order to verify the effectiveness and advantage of the modified UE model, the equivalent linearized method and time -domain integral method with different constitutive models were used simultaneously to carry out nonlinear seismic response analysis of soil layers in Xiangtang Array. By comparing the results from different equiv- alent linearization methods with actual records, it is proved that the modified UE model is effective for evaluation of seismic ground response in xiangtang array.