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步，以开发一种用于土壤液化模型的模型，这种现象在这种现象中，土壤失去了其固体的反应并发展了类似流体的行为，并且对结构产生了灾难性的后果，对基于或涉及这种土壤的结构都涉及多种机械框架，从而涉及多种机械框架的扩展。身体，特别适合描述从固体状向流体样行为的过渡。 该框架的概括包括一个复杂的现象，例如土壤液化，以及地质和流体饱和培养基中波的传播，将统一这种现象的建模与已研究的其他耗散过程。 一旦理论发展，它将应用于与地震危害相关的特定边界价值问题。