@article{ref1,
title="Research on Hydro-Mechanical Coupling Characteristics on Soil-Structure Interface in High Earth Rock-fill Dams",
journal="Disaster advances",
year="2012",
author="Luo, Yulong and Zhan, Meili and Jinchang, Sheng and Wu, Qiang and He, Shuyuan",
volume="5",
number="4",
pages="139-143",
abstract="The soil-structure interface is the weakest part in dams, especially for the 200 similar to 300m high earth rock-fill dams. We studied the hydro-mechanical coupling characteristics on the interface between highly plastic clay and a concrete cut-off wall under high stress, high hydraulic gradient and large shear deformation using a new Soil-Structure Contact Shear Permeameter. The results indicate that (1) the essential of structure shear failure is due to the hydro-mechanical coupling effect. The interface seepage failure may cause structure shear failure when the ratio of deviatoric stress to confining pressure is within 1.0 similar to 1.2. (2) The stress-strain curve on the soil-structure interface is the strain softening type, and the tangent elastic modulus increases with the confining pressure. (3) The radial shear cracks on the top of cut-off wall are signals for the further structure shear failure.<p />",
language="en",
issn="0974-262X",
doi="",
url="http://dx.doi.org/"
}