【摘要】 当前土层地震反应分析所用的主要方法是一维等效线性化波动方法。简单阐述了等效线性化方法的基本原理,总结了其发展历程和现状。根据其原理和多年的应用实践,指出了其优点和缺点。其优点主要是概念简单明确,计算量较小,便于工程应用。其缺点主要是该方法本身不能反应地震波在土体传播的真实过程,在工程实践中处理软弱土层和强震动输入时所表现出的一些不合理的地方。并对这些优缺点的机理进行了简要地分析。更多还原

【Abstract】 One-dimension equivalent linear method is a main method of seismic response analysis for soil layers. In this paper, the method’s basic principle is clarified briefly, its developing course and actualities are summarized. According to its basic principle and application practice, its merits and shortcomings are pointed out. Its merits are simple and clear conception, little calculation and easy application to engineering. Its shortcomings are not to simulate the soil’s status really when the wave propagates through soil layers, and are to obtain unreasonable results when soft layer or strong earthquake input is calculated by the method in engineering practice. The reasons why the merits and shortcomings appear are analyzed briefly.更多还原