Simple model for transient soil loading in earthquake analysis. I. Basic model and its application
Simple model for transient soil loading in earthquake analysis. I. Basic model and its application
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DOI：
10.1002/nag.1610090505
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发表时间：
1985-09
影响因子：
4
通讯作者：
O. Zienkiewicz;K. Leung;M. Pastor
中科院分区：
文献类型：
--
作者：
O. Zienkiewicz;K. Leung;M. Pastor
近年来，几种描述循环荷载下土壤响应和“液化”潜力的模型已经被引入，但成功有限。这些方法中的大多数对于实际参数识别来说过于复杂，并且没有被广泛地用于实际应用。本文介绍了一个相对简单的修改著名的临界状态模型，合理地解释循环试验下观察到的现象，并确实提高了单调加载的临界状态模型的性能。该模型与实验结果和作者早先介绍的“致密化模型”进行了比较，显示出良好的预测能力。该模型属于广义塑性边界曲面类型。在其最简单的形式，适用于粘土类材料，它需要一个单一的参数的识别额外的标准，临界状态模型所需的。另见IRRD 288367。（作者/TRRL）
Several models describing soil response under cyclic loading and the 'liquefaction' potential have been introduced in recent years with limited success. Most of these are over-complex for realistic parameter identification and have not been widely adopted for practical use. This paper introduces a relatively simple modification of the well-known critical state model which accounts reasonably well for the phenomena observed under cyclic tests and indeed improves the performance of critical state models in monotonic loading. This model is compared with experimental results and with the 'densification model' introduced earlier by the authors and shows good predictive capacity. The model is of a generalized plasticity-bounding surface type. In its simplest form, suitable for clay-like materials, it requires the identifications of a single parameter additional to those required for a standard, critical state model. See also IRRD 288367. (Author/TRRL)