Author(s): Xia Liu; Xingzheng Wu; Junxia Xin; Hangong Tian
Linked Author(s):
Keywords: Concrete-faced rockfill dam; Stress; Displacement; Finite-element-method
Abstract: High-usage of exploited materials on dam construction site is very important for saving cost and shortening construction period. It is of practical significance to evaluate and predict the behavior of dam by numerical analysis methods, especially to the site composed by soft rock, such as mudstone or shale rock. Three-dimensional finite element analysis is carried out to use selected material parameters to predict the response of Yutiao concrete-faced rockfill dam during construction and reservoir-filling stages. The simple incremental elastic and isotropic hyperbolic model developed by Duncan and Chang is employed to characterize the inelastic deformation behavior of rockfill materials. A mid-point incrementally-iterative numerical technique is developed and incorporated into a computer program which is able to simulate the non-linearity of rockfill materials in loading sequences during construction and impoundment. The displacements and stresses of concrete slab and rockfills as well as deformations of peripheral joints are evaluated. The computed results given by this study are found to be good agreement with the engineering measured values. Some meaningful results and insights are gained, which are helpful to select the embankment material and to improve the dam design.
Year: 2002