Fundamental Aspects of the Behavior of Saturated Soils UnderUndrained Cyclic Loads

不排水循环荷载下饱和土壤行为的基本方面

• 批准号: 8922170
• 负责人: Mladen Vucetic
• 金额: $ 13.28万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8922170&HistoricalAwards=false
• 关键词: Fundamental; Aspects; Behavior; Saturated; Soils

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.

现有数据表明，任何土壤微结构对荷载的响应机制都具有相同的关键组成部分，并且不同土壤中获得不同的循环响应主要是因为在每种类型的土壤中，某些组成部分比其他组成部分更占主导地位。 因此，不同土壤的循环特征可以通过这些微观结构机制联系在一起并进行独特的解释，从而使土壤动力学成为一门更加严格和系统的学科。 目前，还没有这样的联系，并且利用不同土壤的不同循环特征分别研究无粘性和粘性土壤，并且将基于对土壤微观结构行为的理解来开发循环土壤分类。