Permeability evaluation and its implications for consolidation analysis of an Italian soft clay deposit
Permeability evaluation and its implications for consolidation analysis of an Italian soft clay deposit
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渗透率评估及其对意大利软粘土矿床固结分析的影响
DOI：
10.1139/t01-042
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
P. Simonini
中科院分区：
文献类型：
--
作者：
G. Cortellazzo;P. Simonini
本研究涉及对固结分析中估计软粉质粘土渗透率的可能方法进行比较分析。为此，使用有限元方法对在其上建造路堤的厚而均匀的仪器化软粉质粘土沉积物的固结响应进行了反分析。为了模拟固结过程，渗透率数据是通过实验室和现场压电锥测试仔细确定的。将一维和三轴渗透率测试数据与压电锥耗散测试的结果进行比较，后者使用四种不同的解决方案进行解释。还讨论了各向异性对渗透特性对固结率的影响。关键词：固结，路堤，有限元分析，渗透率，压电锥体，软质粉质粘土。
The present research concerns a comparative analysis of the possible methods for estimating soft silty clay permeability to be used in the analysis of consolidation. For this purpose the consolidation response of a thick and homogeneous, instrumented soft silty clay deposit, on which an embankment was constructed, is back-analyzed using the finite-element method. To model the consolidation process, permeability data are carefully determined both from laboratory and in situ piezocone tests. One-dimensional and triaxial permeability test data are compared with the results of piezocone dissipation tests, the latter interpreted using four different solutions. The effects of anisotropy on permeability characteristics influencing the consolidation rate are also discussed.Key words: consolidation, embankment, finite-element analyses, permeability, piezocone, soft silty clay.