Investigation of Scale Modeling Using Shake Table Under 1g Condition to Complete Comparative Testing with Centrifuge VELACS Results

1g条件下使用摇床进行尺度建模研究，完成与离心机VELACS结果的对比测试

基本信息

批准号：
9321929
负责人：
Ronald Scott
金额：
$ 4.99万
依托单位：
California Institute of Technology
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1994
资助国家：
美国
起止时间：
1994-04-15 至 1996-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9321929&HistoricalAwards=false
关键词：
Investigation Scale Modeling Using Shake

项目摘要

9321929 Scott This action concerns the use of scale models to investigate the response of geotechnical structures (earth dams, embankments, building foundations, etc.) to earthquake-induced strong-ground motions. In particular, the possibility of using a scale model mounted on a shake table to simulate the earthquake response of a full-scale geotechnical structure is being investigated through this exploratory study. If this 1g (normal gravity loading) experimental technique fulfills its promise, it will effect two areas. First, the potential impact is large for industry, because the lower cost of 1g tests in comparison with experiments performed on a geotechnical centrifuge (approximately 25% to 40% lower) will improve the access to physical modeling by practicing geotechnical earthquake engineers; resulting in a substantial advance in industry practice. The second impact is to centrifuge experiments. The new scaling relations will permit the current maximum capacities of centrifuges to be overcome to that the need for larger and more costly centrifuges is reduced. This research program combines experiments and analytical studies to compare with the experiments, in order to investigate scaling relations. Particular emphasis is placed on pore fluids and the dynamic environment, motivated by the need to resolve some concerns regarding the appropriateness of the scaling relations currently used for centrifuge studies. ***

9321929 Scott这一行动涉及使用量表模型来研究岩土结构（地球坝，路堤，建筑基础等）对地震引起的强景运动的响应。特别是，正在通过这项探索性研究研究了使用安装在摇桌上的比例模型来模拟全尺度岩土结构的地震反应的可能性。如果这种1G（正常的重力加载）实验技术实现其诺言，则将影响两个领域。首先，潜在的影响对工业是很大的，因为与在岩土技术离心机上进行的实验相比，1G测试的较低成本（降低约25％至40％）将通过练习岩土技术地震工程师来改善物理建模的机会；在行业实践中取得了长足的进步。第二个影响是离心实验。新的扩展关系将允许克服当前离心机的最大能力，因为对更大，更昂贵的离心机的需求减少了。该研究计划结合了实验和分析研究以与实验进行比较，以研究扩展关系。特别强调孔隙流体和动态环境，这是由于需要解决有关当前用于离心机研究的缩放关系的适当性的一些担忧。 ***