Computing Green's Functions for the Seismic Response Analysis of Layered Earth Strata

计算层状地层地震响应分析的格林函数

• 批准号: 8600269
• 负责人: Eduardo Kausel
• 金额: $ 11万
• 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: 1987
• 资助国家: 美国
• 起止时间: 1987-01-01 至 1989-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8600269&HistoricalAwards=false
• 关键词: Computing; Green; Functions; Seismic; Response

Engineering scientists have long been interested in calculating the dynamic loads acting in a solid of finite or infinite extent, with heterogeneous properties. This research program is a continuation of this effort with specific application to the National Earthquake Hazard Reduction Program. In considering the propagation of seismic waves through the earth's crust, and of the resultant ground shaking at a particular constructed facility such as a dam or nuclear power plant, an attempt is made to take account of the earth's inhomogeneity; this however usually leads to severe analytical or computational difficulties. This research program will capitalize on a significant advance that the principal investigator has made in this regard, and will extend it to account for the layered stratification of the earth. The method is expected to be computationally efficient and will be of use in a wide range of earthquake engineering problems, such as the dynamic analysis of structural foundations and underground facilities. The principal investigator is recognized for his expertise in, and contribution to, this area of research. It is expected that the research will provide a significantly improved capability to include the effect of the earth's inhomogeneity on earthquake induced ground motion and the associated response of constructed facilities.

工程科学家长期以来一直有兴趣计算具有有限或无限范围的固体作用的动态载荷，具有异质性质。 该研究计划是在国家地震危害计划中的特定应用程序的延续。 在考虑地震浪的传播中，通过地球的地壳传播，以及在特定建造的设施（例如大坝或核电站）摇晃的地面时，试图考虑地球的不均匀性；但是，这通常会导致严重的分析或计算困难。 该研究计划将利用主要研究者在这方面所取得的重大进步，并将其扩展以说明地球的分层分层。 该方法有望在计算上有效，并将在各种地震工程问题中使用，例如对结构基础和地下设施的动态分析。 首席研究人员因其在这一研究领域的专业知识和贡献而受到认可。 预计该研究将提供明显提高的能力，以包括地球不均匀性对地震诱导的地面运动的影响以及构造设施的相关响应。