Workshop on Simulating Earthquake Strong Ground Motions on Large Geotechnical Centrifuges

大型岩土离心机模拟地震强地震动研讨会

• 批准号: 9007470
• 负责人: Hon-Yim Ko
• 金额: $ 2.49万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-15 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9007470&HistoricalAwards=false
• 关键词: Workshop; Simulating; Earthquake; Strong; Ground

This action is for the support of a workshop to discuss the simulation of earthquake strong ground motions using geotechnical centrifuges. Geotechnical centrifuge modeling is a means of testing physical models of earth structures - such as embankments and dams - in the laboratory: it does this by correctly simulating the effect of gravity-induced stresses on the strength and stiffness properties of soil. These stresses increase with depth, just as water pressure increases with depth below the surface. Subjecting an N-th scale earth model to N times the acceleration due to gravity yields the correct gravity-induced stresses. The state-of-the-art in geotechnical centrifuge modeling has progressed rapidly during the last decade. Especially important is the fact that during this decade, a new generation of geotechnical engineers has been trained with an appreciation of, and experience in using, this method. An exciting development has been the recent use of geotechnical centrifuges to simulate earthquake-induced strong ground motions. This development has the potential to make a dramatic contribution to earthquake hazard mitigation. The objective of this workshop is to explore the issues involved in adding an earthquake simulation capability to the three large national geotechnical centrifuges at the University of California at Davis, the University of Colorado at Boulder and at Rensselaer Polytechnic Institute in Troy, New York. Participants include representatives from academe, federal and state agencies, industry, and from major geotechnical centrifuge installations in foreign countries. The workshop is to be held at the University of Colorado at Boulder on 12-13 February 1990: a report summarizing the discussions, conclusions and recommendations will be distributed following the workshop.

这一行动是为了支持一个讲习班 讨论地震模拟 强地面运动 离心机 土工离心模型是一种 测试地球物理模型 建筑物--如堤坝和水坝-- 在实验室里：它通过正确地 模拟重力感应效应 强度和刚度应力 土壤的性质。 这些压力增加 随着深度的增加，就像水压增加一样 深度低于地表。 服从一个 N倍地球模型 重力加速度产生 纠正重力引起的应力。 岩土工程的最新技术 离心模型的发展很快 在过去的十年里。 尤为重要 在这十年里，一个新的 一代岩土工程师 受过专业训练， 使用这种方法的经验。 一个 令人兴奋的发展是最近使用 土工离心机来模拟 地震引起的强烈地面运动。 这一发展有可能使一个 对地震危险性的巨大贡献 减灾 本次研讨会的目的是探索 增加地震所涉及的问题 三大仿真能力 国家土工离心机 加州大学戴维斯分校 位于博尔德的科罗拉多大学和 Rensselaer Polytechnic Institute，Troy，New 约克。 与会者包括代表 来自联邦政府、联邦和州政府机构 工业和主要岩土工程 国外离心机装置 国家 研讨会将在 科罗拉多大学博尔德分校12-13 1990年2月：一份报告总结了 讨论、结论和建议 将在讲习班结束后分发。