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地震产生的地面运动的强度，以及结构抵抗运动的能力。地震动强度取决于地震震级、距离和土壤条件。通过以适合输入工程分析的格式提供有关预期运动的信息，我们使地震工程师能够设计出经济高效且具有抗震能力的结构。预期地面运动的建模位于地震学和地震工程的交叉领域，是阿特金森博士研究项目的重点。阿特金森博士分析了地震产生的地震波，并建立了模型来描述它们如何在地球上传播。计算机模拟和地面运动经验建模相结合，通常在重大区域事件发生后近乎实时地进行，用于表征地震摇动的强度。该模型使用简单的参数化，可以对未来预期的地面运动进行前向预测。地面运动模型用于为监管机构更新抗震设计法规的规定提供建议，这些标准确保建筑物和关键设施（如水坝和核电站）能够安全地承受地震震动和影响。阿特金森博士研究的最终目标是帮助设计抗震结构，以拯救生命并最大限度地减少未来地震中的经济破坏。****