LEAP-GWU-2015 experiment specifications, results, and comparisons
LEAP-GWU-2015 experiment specifications, results, and comparisons
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DOI：
10.1016/j.soildyn.2017.05.018
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发表时间：
2017-06
影响因子：
4
通讯作者：
B. Kutter;T. Carey;T. Hashimoto;M. Zeghal;T. Abdoun;P. Kokkali;G. Madabhushi;S. Haigh;Francesca Burali d'Arezzo;S. Madabhushi;W. Hung;Chung-Jung Lee;Hao Cheng;S. Iai;T. Tobita;Takayuki Ashino;Jianfei Ren;Yan-Guo Zhou;Yun-min Chen;Zheng Sun;M. Manzari
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文献类型：
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作者：
B. Kutter;T. Carey;T. Hashimoto;M. Zeghal;T. Abdoun;P. Kokkali;G. Madabhushi;S. Haigh;Francesca Burali d'Arezzo;S. Madabhushi;W. Hung;Chung-Jung Lee;Hao Cheng;S. Iai;T. Tobita;Takayuki Ashino;Jianfei Ren;Yan-Guo Zhou;Yun-min Chen;Zheng Sun;M. Manzari
LEAP(液化实验和分析项目)致力于使液化过程正式化，并提供验证用于预测液化现象的数值模型所需的数据。对于LEAP-GWU-2015，LEAP中的一个项目，在6个离心机设施(剑桥大学、京都大学、加州大学戴维斯大学、国立中央大学、伦斯勒理工学院和浙江大学)重复进行实验，并将结果共享和存档，以验证数值模型。本文介绍了LEAP-GWU-2015实验的技术指标，并对六个装置的实验结果进行了比较。指定的实验是针对具有5度坡度的均匀中密度沙子，在刚性容器中受到倾斜的1赫兹正弦波基运动。该实验的目的是相对简单，使不同的设备能够产生可比较的实验。虽然不能声称相同的实验在不同的离心机上精确地重复，但有人认为，结果足够相似，以至于每个实验都为这组结果提供了准确性。实验之间的可变性的一个好处是，多样性使更普遍的验证成为可能。总结了关于未来验证数值模式的实验的规范的重要经验教训。LEAP-GWU-2015展示了一种对未来验证研究有用的参考方法。
LEAP (Liquefaction Experiments and Analysis Projects) is an effort to formalize the process and provide data needed for validation of numerical models designed to predict liquefaction phenomena. For LEAP-GWU-2015, one project within LEAP, an experiment was repeated at 6 centrifuge facilities (Cambridge University, Kyoto University, University of California Davis, National Central University, Rensselaer Polytechnic Institute, and Zhejiang University) and the results were shared and archived for the purposes of validation of numerical models. This paper describes the specifications for the LEAP-GWU-2015 experiment and compares the experimental results from the six facilities. The specified experiment was for uniform medium dense sand with a 5 degree slope in a rigid container subject to a ramped, 1 Hz sine wave base motion. The experiment was meant to be relatively simple to enable different facilities to produce comparable experiments. Although it cannot be claimed that identical experiments were precisely replicated on different centrifuges, it is argued that the results are similar enough that each experiment lends veracity to the set of results. A benefit of variability between experiments is that the variety enables a more general validation. Important lessons with regard to specification of future experiments for validation of numerical models are summarized. LEAP-GWU-2015 has demonstrated an approach that is a useful reference for future validation studies.