Flow Behavior and Solidification of Liquefied Saturated Sands

液化饱和砂的流动行为和凝固

• 批准号: 8722404
• 负责人: Harri Kytomaa
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8722404&HistoricalAwards=false
• 关键词: Flow; Behavior; Solidification; Liquefied; Saturated

The extent of finite soil deformation caused by liquefaction, flow and solidification, is addressed in this project. The study of the two- dimensional interactions between viscous two-component boundary layers and solidification waves, is undertaken for establishing criteria (based on soil properties and ground geometry) for predicting the extent of lateral spreading and flow failures. The study is based on a one-dimensional solidification process and a model constructed on the basis of two superimposed and interacting continua, the liquid and the solids. The investigation thus, is an extension and generalization of those findings to two dimensions, where the analysis focuses on the development of the two-dimensional constitutive relations between stress and strain rate in this bi-continuum framework. The results of this study will provide a more reliable way of predicting the extent of lateral spreading and flow failures in the event of a ground related hazard, and of estimating the damage potential to structures.

由液化、流动和液化引起的有限土变形的程度 固化，在这个项目中得到解决。 两人的研究- 粘性二元边界层间的量纲干扰 和凝固波，进行了建立标准 （基于土壤特性和地面几何形状）， 横向扩展和流动故障的程度。 这项研究是基于 一个一维凝固过程和一个模型， 两个叠加和相互作用的连续体的基础，液体和 固体。 因此，调查是一种延伸， 将这些发现归纳为两个方面，其中分析 着重于发展二维本构 在这个双连续体中应力和应变率之间的关系 框架. 本研究的结果将提供一个更可靠的途径 预测的横向蔓延和流动故障的程度， 与地面有关的危险事件，以及估计损害 结构的潜力。