Development of a Model for Liquefaction and the Study of the Propagation of Seismic Waves in Fluid Saturated Porous Media

液化模型的建立和流体饱和多孔介质中地震波传播的研究

• 批准号: 0301608
• 负责人: Kumbakonam Rajagopal
• 金额: $ 28.17万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-01 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0301608&HistoricalAwards=false
• 关键词: Development; Model; Liquefaction; Study; Propagation

This research program will exploit progress that has been made in a variety of mechanics disciplines in order to develop a model for soil liquefaction, a phenomenon in which soils lose their solid-like response and develop fluid-like behavior, with catastrophic consequences for structures built on or of such soils.Specifically, it involves an extension of a thermomechanical framework that has proven very successful in describing numerous dissipative systems such as inelastic and viscoelastic bodies, and which has been particularly suited to describe the transition from solid-like to fluid-like behavior. The generalization of the framework to include a complex phenomenon such as soil liquefaction, and the propagation of waves in geological and fluid saturated media, will unify the modeling of such phenomena with other dissipative processes that have been studied. Once the theory has been developed, it will be applied to specific boundary value problems that have relevance to earthquake hazard mitigation.

该研究计划将利用在各种力学学科中取得的进展，以开发土壤液化模型，这是一种土壤失去其固体响应并发展流体行为的现象，对建造在此类土壤上或此类土壤上的结构造成灾难性后果。它涉及热机械框架的扩展，该框架已被证明在描述许多耗散系统如非弹性体和粘弹性体方面非常成功，并且其特别适合于描述从固体状到流体状行为的转变。 概括的框架，包括一个复杂的现象，如土壤液化，在地质和流体饱和介质中的波的传播，将统一建模等现象与其他耗散过程已被研究。 一旦该理论得到发展，它将被应用到特定的边值问题，有相关的地震灾害减轻。