Fundamental Aspects of the Behavior of Saturated Soils UnderUndrained Cyclic Loads

已有资料表明，任何土体微结构对荷载的响应机理都有相同的关键成分，不同土体的循环响应不同，主要是因为在每种类型的土体中，某些成分占主导地位。因此，不同土壤的循环特性可以通过这些微观结构机制联系在一起并得到独特的解释，使土壤动力学成为一门更加严谨和系统的学科。目前，这种联系是不可行的，无粘性土和粘性土是利用不同土的不同循环特性来分别研究的，并将在了解土的微观结构行为的基础上制定循环土分类。

Available data indicate that the mechanism of the response of any soil microstructure to loads has the same key components, and that different cyclic response in different soils is obtained mainly because in each type of soil some of the components are more dominant than the others. Consequently, cyclic characteristics of different soils can be linked together and uniquely explained via these microstructural mechanisms, making soil dynamics a more rigorous and systematic discipline. At present, no such link is avialable, and cohesionless and cohesive soils are studied separately using differnt cyclic characterization of different soils and cyclic soil classification will be developed based on the understanding of the behavior of soil microstructure.