Dynamic Behavior of Uniform Clean Sands: Evaluation of Predictive Capabilities in the Element- and the System-Level Scale

Dynamic Behavior of Uniform Clean Sands: Evaluation of Predictive Capabilities in the Element- and the System-Level Scale
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均匀清洁沙子的动态行为:元素级和系统级尺度的预测能力评估

DOI:
10.1061/9780784484043.043
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发表时间:
2022
期刊:
GeoCongress 2022
影响因子:
--
通讯作者:
Boulanger, Ross W.
Boulanger, Ross W.
中科院分区:
--
文献类型:
--
作者:
Chiaradonna, Anna;Ziotopoulou, Katerina;Carey, Trevor J.;DeJong, Jason T.;Boulanger, Ross W.

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本文研究并提出了一个均匀的干净的沙子,使用单调和循环的实验室试验以及离心模型试验的响应的数值模拟和验证组成的一个淹没的斜坡。使用临界状态兼容的、基于应力比的边界面塑性本构模型(PM4 Sand)对沙子的动态响应进行建模,该模型在商业有限差分平台FLAC中实施,并根据由实验室数据组成的综合测试程序评估PM4 Sand的性能。和仪器齐全的离心机模型测试。三个不同的校准实验室和离心机的数据进行了通知,并讨论了良好的预测。得出的结论是关于对实验室和离心机数据的模拟性能,并提供有关模型的校准的建议。
This paper investigates and presents the numerical modeling and validation of the response of a uniform clean sand using monotonic and cyclic laboratory tests as well as a centrifuge model test comprised of a submerged slope. The dynamic response of the sand is modeled using a critical state compatible, stress ratio-based, bounding surface plasticity constitutive model (PM4Sand), implemented in the commercial finite-difference platform FLAC, and PM4Sand’s performance is evaluated against a comprehensive testing program comprised of laboratory data and a well-instrumented centrifuge model test. Three different calibrations informed by the lab and centrifuge data are performed and the goodness of the predictions is discussed. Conclusions are drawn with regards to the performance of the simulations against the laboratory and centrifuge data, and recommendations about the calibration of the model are provided.
简单剪切装置造成的不均匀性
DOI: --
发表时间: 1984
期刊:
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