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

• 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

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这项行动涉及使用比例模型来研究土工结构(土坝、堤坝、建筑基础等)的响应。地震引起的强地面运动。特别是，通过这项探索性研究，正在探索使用安装在振动台上的比例模型来模拟全尺寸岩土结构的地震反应的可能性。如果这种1G(正常重力加载)实验技术实现了它的承诺，它将影响两个领域。首先，这对工业的潜在影响很大，因为与在土工离心机上进行的试验相比，1G试验的成本更低(大约低25%到40%)，这将改善通过培养土工地震工程师获得物理模型的机会；从而在工业实践中取得实质性进展。第二个影响是对离心机的实验。新的比例关系将允许克服目前离心机的最大能力，从而减少对更大和更昂贵离心机的需求。本研究采用实验和分析研究相结合的方法，将实验结果与实验结果进行对比，以考察标度关系。特别强调孔隙流体和动态环境，其动机是需要解决对目前用于离心机研究的比例关系的适当性的一些关切。***