Applicability of UH model to coarse-grained soil

¹ Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, 210098 Nanjing, China
² Laboratoire de Mécanique, Multiphysique, Multiéchelle, Université de Lille, 5900 Lille, France
³ Laboratoire de Génie Civil et géo-Environnement, Université de Lille, 5900 Lille, France

^* Corresponding author: zhujungao@hhu.edu.cn

Abstract

Large-scale triaxial, K0 compression and constant stress ratio path tests were carried out on two kinds of coarse-grained soils. Stress-strain relationships of these tests were simulated by using UH model for sands to study the applicability of the model to different stress paths of coarse-grained soil, and the results were compared with those of Duncan’s E-B model. It is shown that the mechanical behaviors of coarse-grained soil can be well described by the UH model, and overall its capacity to reflect stress-strain relationship under different stress paths is better than that of Duncan’s E-B model. Finally, the UH model and Duncan’s E-B model were used for stress-deformation analysis of a core rockfill dam. The applicability of UH model for sands to coarse-grained soil was verified.