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Anisotropy of consolidation parameters in artifically sedimented clays

机译：人工沉积粘土中固结参数的各向异性

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The stability of an earth structure on soft clay foundations is influenced by the stress-strainrnbehaviour, drainage conditions and the associated failure mechanisms of the clay. The rapid increase of pore water pressure during construction, and the subsequent slow rate of pore pressure dissipation are often the main factors that dictate soft clay failure. Subsequently, ground improvement methods such as the use of prefabricated vertical drains (PVD) are becoming more popular for stabilisation of these soils. Calculations of soil behaviour commonly utilize the assumption of soil as an isotropic material regardless of the widely documented reality that soft clays exhibit significant anisotropy.rnThe consolidation and permeability characteristics of two artificial clays were investigated within this study through a series of oedometer tests. These tests were conducted on both horizontally and vertically cutrnspecimens, and values for anisotropy detailed. Such results will be helpful in approximating the anisotropyrnpresent in natural soils of similar plasticity.
机译：粘土结构在软粘土地基上的稳定性受其应力-应变特性，排水条件和相关的破坏机理影响。施工期间孔隙水压力的快速增加以及随后孔隙压力消散的缓慢速率通常是决定软黏土破坏的主要因素。随后，为了改善这些土壤的稳定性，诸如使用预制垂直排水管（PVD）的地面改良方法正变得越来越普遍。土壤行为的计算通常使用假设土壤为各向同性的材料，而不考虑广泛记录的事实，即软粘土表现出明显的各向异性。在本研究中，通过一系列测压计测试研究了两种人造粘土的固结和渗透特性。这些测试是在水平和垂直切割试样上进行的，并详细列出了各向异性的值。这样的结果将有助于近似可塑性相似的天然土壤中存在的各向异性。

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