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

[9321929] Scott这项行动涉及使用比例模型来研究土工结构（土坝、堤防、建筑基础等）对地震引起的强地面运动的反应。特别是，利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正在通过本探索性研究进行调查。如果这种1g（正常重力载荷）实验技术实现了它的承诺，它将影响两个领域。首先，对工业的潜在影响很大，因为与在岩土离心机上进行的实验相比，1g测试的成本较低（大约低25%至40%），这将改善实践岩土地震工程师获得物理建模的机会；从而在行业实践中取得实质性进展。第二个影响是离心机实验。新的比例关系将允许克服目前离心机的最大容量，从而减少对更大和更昂贵的离心机的需求。本研究计划将实验与分析相结合，与实验进行比较，以探讨标度关系。由于需要解决有关目前用于离心机研究的刻度关系的适当性的一些问题，因此特别强调孔隙流体和动态环境。＊＊＊

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. ***