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.

该研究计划将利用各种力学学科取得的进展，开发土壤液化模型，在这种现象中，土壤失去固体响应并发展出流体行为，对建造的结构造成灾难性后果具体来说，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（例如非弹性和粘弹性体）方面非常成功，并且特别适合描述从类固体到类流体的行为。 该框架的概括包括土壤液化等复杂现象，以及波在地质和流体饱和介质中的传播，将使此类现象的建模与已研究的其他耗散过程统一起来。 该理论一旦发展起来，将应用于与地震减灾相关的特定边值问题。