The shear stiffness characteristics of four Eocene-to-Jurassic UK stiff clays
The shear stiffness characteristics of four Eocene-to-Jurassic UK stiff clays
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DOI：
10.1680/jgeot.15.p.236
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发表时间：
2017-02
期刊：
影响因子：
5.8
通讯作者：
A. Brosse;R. Kamal;R. Jardine;M. Coop
中科院分区：
文献类型：
--
作者：
A. Brosse;R. Kamal;R. Jardine;M. Coop
英国南部的大部分地区都被硬粘土覆盖。改善其岩土工程特性对于许多当前和未来的基础设施项目非常重要。本文介绍了一个综合的研究复杂的刚度行为的四个关键的中塑性，高度超固结地层：高尔特，Kimmeridge，牛津和伦敦粘土。后者是在侏罗纪和始新世之间在大致相似的海洋条件下沉积的。对高质量样品进行了先进的静态和动态实验室测量的协调方案，重点是从内陆地点类似深度采集的样品，包括采用高分辨率局部应变、多轴弯曲元件和共振柱技术进行的三轴和空心圆柱体应力路径实验。采用一种新的方法来解释空心圆柱实验，并结合独立的现场剪切波数据对实验室测量结果进行了检验。粘土的硬度C.
A large proportion of the southern UK is underlain by stiff clays. Improving their geotechnical characterisation is important for many current and future infrastructure projects. This paper presents an integrated study of the complex stiffness behaviour of four key medium-plasticity, highly overconsolidated strata: the Gault, Kimmeridge, Oxford and London clays. The latter were deposited between the Jurassic and the Eocene under broadly similar marine conditions. Coordinated programmes of advanced static and dynamic laboratory measurements have been undertaken on high-quality samples, concentrating on samples taken from similar depths at inland sites and including triaxial and hollow cylinder stress path experiments employing high-resolution local strain, multi-axial bender element and resonant column techniques. A new approach was employed to interpret the hollow cylinder experiments and the laboratory measurements are examined in combination with independent field shear wave data. The clays' stiffness c...