Improvement of a hypoplastic model to predict clay behaviour under undrained conditions
Improvement of a hypoplastic model to predict clay behaviour under undrained conditions
复制标题
改进低塑性模型以预测不排水条件下粘土的行为
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
I. Herle
中科院分区：
文献类型：
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作者：
D. Mašín;I. Herle
第一作者提出的亚塑性模型的一个缺点是不排水应力路径的初始部分的预测不正确，特别是在各向同性应力状态下正常固结土的试验。一个概念上简单的修改这个模型，克服了这个缺点，提出的贡献。修正后的模型适用于正常固结和超固结土，并预测相同的清除记忆状态（即，正常压缩线）作为原始模型。在各向异性应力状态和在较高的超固结比的修改后的模型产生类似于原来的模型的预测。
A shortcoming of the hypoplastic model for clays proposed by the first author is an incorrect prediction of the initial portion of the undrained stress path, particularly for tests on normally consolidated soils at isotropic stress states. A conceptually simple modification of this model, which overcomes this drawback, is proposed in the contribution. The modified model is applicable to both normally consolidated and overconsolidated soils and predicts the same swept-out-memory states (i.e., normal compression lines) as the original model. At anisotropic stress states and at higher overconsolidation ratios the modified model yields predictions similar to the original model.