Characterization of mudrocks:a practical application of advanced laboratory testing  

作　　者：Richard J.JARDINE 

机构地区：[1]Department of Civil and Environmental Engineering,Imperial College London

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2011年第1期1-14,共14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 UK Engineering and Physical Sciences Research Council (EPSRC);the British Airports Authority (BAA);the London Underground Limited (LUL),UK

摘　　要：An integrated approach to geomaterial characterization is advocated that combines geology, in-situ testing, fabric studies, routine index experiments and advanced laboratory testing. It is shown that advanced laboratory testing can explore features such as kinematic yielding and anisotropy in stiffness or shear strength that would otherwise be impossible to quantify. A detailed study performed in London clay at the new Heathrow Terminal 5 site is used to illustrate the arguments made. It is shown that the London clay has strong anisotropy in stiffness, is highly non-linear over the strain range of engineering interest, has markedly anisotropic shear strength characteristics and exhibits a pronounced degree of brittleness. These features can impact significantly on the practical design and analysis of civil engineering works including shallow and deep foundations, tunnels and excavations, and the stability of slopes.An integrated approach to geomaterial characterization is advocated that combines geology, in-situ testing, fabric studies, routine index experiments and advanced laboratory testing. It is shown that advanced laboratory testing can explore features such as kinematic yielding and anisotropy in stiffness or shear strength that would otherwise be impossible to quantify. A detailed study performed in London clay at the new Heathrow Terminal 5 site is used to illustrate the arguments made. It is shown that the London clay has strong anisotropy in stiffness, is highly non-linear over the strain range of engineering interest, has markedly anisotropic shear strength characteristics and exhibits a pronounced degree of brittleness. These features can impact significantly on the practical design and analysis of civil engineering works including shallow and deep foundations, tunnels and excavations, and the stability of slopes.

关 键 词：Mudrock FABRIC ANISOTROPY Hollow cylinder tests 

分 类 号：TU442[建筑科学—岩土工程]