Influence of natural deposition plane orientation on oedometric consolidation behavior of three typical clays from southeast coast of China  

作　　者：Qi-yin ZHU Yin-fu JIN Zhen-yu YIN Pierre-Yves HICHER 

机构地区：[1]Department of Civil Engineering, Shanghai Jiao Tong University [2]LUNAM University, Ecole Centrale de Nantes,GeM UMR CNRS 6183, Nantes, France

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2013年第11期767-777,共11页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.41240024 and 41372285);the Shanghai Pujiang Talent Plan(No.11PJ1405700);the Research Fund for the Doctoral Program of Higher Education of China(No.20110073120012);the European Project CREEP(No.PIAPP-GA-2011-286397)

摘　　要：The parameters obtained from oedometric consolidation tests are commonly used in the development of constitutive modeling and for engineering practice. This paper focuses on the influence of the natural deposition plane orientation on oedometric consolidation behavior of three natural clays from the southeast coast of China. Oedometer tests were conducted on intact specimens prepared by sampling at a series of angles relative to the natural deposition plane. For each specimen, yield stress,compressibility indexes, secondary compression, and permeability coefficients were determined. The influence of the sampling angle on these properties was investigated, revealing that yield stress, compression index, swelling index, creep index, ratio of secondary compression coefficient to compression index(Cae/Cc) and permeability coefficient were all dependent to some extent on the sampling angle. These findings indicate the role of the anisotropy due to the natural deposition on the oedometric consolidation behavior.The parameters obtained from oedometric consolidation tests are commonly used in the development of constitutive modeling and for engineering practice. This paper focuses on the influence of the natural deposition plane orientation on oe- dometric consolidation behavior of three natural clays from the southeast coast of China. Oedometer tests were conducted on intact specimens prepared by sampling at a series of angles relative to the natural deposition plane. For each specimen, yield stress, compressibility indexes, secondary compression, and permeability coefficients were determined. The influence of the sampling angle on these properties was investigated, revealing that yield stress, compression index, swelling index, creep index, ratio of secondary compression coefficient to compression index （Cae/JCc） and permeability coefficient were all dependent to some extent on the sampling angle. These findings indicate the role of the anisotropy due to the natural deposition on the oedometric con- solidation behavior.

关 键 词：CLAY COMPRESSIBILITY CONSOLIDATION Creep Permeability Natural deposition 

分 类 号：TU411[建筑科学—岩土工程]