%0 Journal Article
%A JIANG Jing-shan
%A CHENG Zhan-lin
%A ZUO Yong-zhen
%A DING Hong-shun
%T Two-dimensional Model Tests on Fabric of Coarse-grained Soils
%D 2014
%R 10.3969/j.issn.1001-5485.2014.09.011
%J Journal of Yangtze River Scientific Research Institute
%P 59-64
%V 31
%N 9
%X The macro-mechanical properties of coarse-grained soils depend on its initial fabric and fabric variation in deformation process. Specimens of different initial fabric structures were prepared and two-dimensional parallel tests were conducted to investigate the influence of fabric on stress-strain relationship of coarse-grained soils. Particle movement was measured by computer image measure system, and fabric change in deformation process of coarse-grained soils was evaluated. Results show that (1) the stress-strain curves of parallel tests were different, which means fabric plays an important role in stress-strain relationship; (2) the orientations of branch vector and particle’s long axis enhanced with the increase of stress in the shear process before failure happened; (3) the peak deviatoric stresses increased with the increase of principal values of initial fabric; (4) the average branch length decreased slightly with the increasing of volumetric strain; (5) the average coordination number did not increase with the diminish of void ratio, which was probably related with polygon particles and big particles in small numbers.
%U http://ckyyb.crsri.cn/EN/10.3969/j.issn.1001-5485.2014.09.011