%0 Journal Article
%A GUO Long-xiao
%A ZHANG Chang-liang
%A YANG De-guang
%A LI Tong-lu
%T Discontinuous Deformation Analysis with Microstructural Model for Axial Odometer Test of Loess
%D 2017
%R 10.11988/ckyyb.20151103
%J Journal of Yangtze River Scientific Research Institute
%P 80-84
%V 34
%N 3
%X Mechanical behavior of loess is controlled by overhead structure of skeleton particle, and microstructure of loess could reveal its mechanical behavior by Discontinuous Deformation Analysis(DDA). In order to simulate the characteristics of consolidation of microscopic loess, we carried out test on  undisturbed L5(Q<sub>2</sub>) loess specimens from southern Jingyang plateau of Shaanxi province, and  measured the  physical and mechanical parameters of loess. Then  we obtained  microstructure image and  particle morphology of the specimens by using optical microscope and image processing software. On this basis, we established soil microstructure model and simulated the  compression deformation under load of 1.0, 12.5, 25.0, 50.0, 100.0, 200.0, 100.0 kPa, respectively. Finally, we obtained microstructure image and  compression curve of the model in the compression process, which are  close to the results of indoor test. Results show that DDA  is feasible for simulating the characteristics of the microscopic deformation of loess and this paper provides an idea for analyzing the microscopic physical and mechanical properties of loess.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20151103