Analysis on the Zoning and Initial Elastic Modulus of Main and Secondary Rock-Fill of CFRD Deformation
Based on Duncan-zhang nonlinear elastic model and ANSYS software, impacts on the settlement and stress of dam as well as the panel deflection are studied with different modulus of dam embankment materials and zoning of rock-fill dams. Through a variety of comparisons, the result shows that the dam settlement and the maximum deflection of panels increase as the initial elastic modulus ratio of main to secondary rock-fill rising. The ratio was much more reasonable within 1 - 2 and the dam deformation was small; 0.3 times top of the dam filled with high strength rock-fill materials might decrease settlement and panel deflection. The boundary line could be put forward to upstream appropriately to improve the utilization of soft rock with modulus ratio of main to secondary rock-fill less than 1.5 times.
J. Mao et al., "Analysis on the Zoning and Initial Elastic Modulus of Main and Secondary Rock-Fill of CFRD Deformation", Applied Mechanics and Materials, Vols. 52-54, pp. 601-605, 2011