Characterization of Earthquake Ground Motions and Hazards for Engineering Applications

工程应用中地震地面运动和灾害的表征

基本信息

批准号：
203176-2012
负责人：
Atkinson, Gail
金额：
$ 3.93万
依托单位：
University of Western Ontario
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=644265
关键词：
Characterization Earthquake Ground Motions Hazards

项目摘要

The destructiveness of an earthquake is determined by the intensity of the ground motions it produces, relative to the ability of structures to resist the motions. The ground motion intensity depends on earthquake magnitude, distance, and soil conditions. By providing information on the expected motions in a format suitable for input to engineering analysis, we enable earthquake engineers to design cost-effective and seismically resilient structures. The modeling of expected ground motions, which lies at the interface between seismology and earthquake engineering, is the focus of Dr. Atkinson's research program. Dr. Atkinson analyses the seismic waves generated by earthquakes, and builds models that describe how they propagate through the earth. A combination of computer simulation and empirical modeling of ground motions, often in near-real time following a significant regional event, is used to characterize the intensity of earthquake shaking. The models use simple parameterizations that enable forward predictions of future expected ground motions. The ground-motion models are used to advise regulatory bodies on updating the provisions in seismic design regulations - standards that ensure that buildings and critical facilities such as dams and nuclear power plants are built to safely withstand earthquake shaking and effects. The ultimate aim of Dr. Atkinson's research is to aid in the design of seismically-resilient structures that will save lives and minimize economic disruption in future earthquakes.****

地震的破坏性取决于其产生的地面运动的强度，相对于结构抵抗运动的能力。地面运动强度取决于地震幅度，距离和土壤条件。通过以适合于工程分析输入的格式提供有关预期动作的信息，我们使地震工程师能够设计具有成本效益和地震弹性的结构。预期地面运动的建模是地震学和地震工程之间的界面，是阿特金森博士研究计划的重点。阿特金森博士分析了地震产生的地震波，并建立了描述它们如何在地球传播的模型。在重大区域事件发生后，通常在近乎现实的时间内，计算机模拟和地面运动的经验建模的结合被用来表征地震震动的强度。这些模型使用简单的参数化，从而可以对未来的预期地面运动进行远程预测。地面动作模型用于向监管机构提供建议，以更新地震设计法规中的规定 - 确保建筑物和关键设施（例如大坝和核电站）的标准，以安全地抵御地震震动和影响。阿特金森博士的研究的最终目的是帮助设计地震弹性结构，以挽救生命并最大程度地减少未来地震的经济破坏。****