Research Information System
Water Science and Engineering, vol.2, no.1, pp.43-57, 2009 (ESCI, Scopus)
This study presents earthquake performance analysis of the Torul Concrete-faced Rock (CFR) Dam with two-dimensional dam-soil and dam-soil-reservoir finite element models. The Lagrangian approach was used with fluid elements to model impounded water. The interface elements were used to simulate the slippage between the concrete face slab and rockfill. The horizontal component of the 1992 Erzincan earthquake, with a peak ground acceleration of 0.515g, was considered in time-history analysis. The Drucker-Prager model was preferred in nonlinear analysis of concrete slab, rockfill and foundation soil. The maximum principal stresses and the maximum displacements in two opposite directions were compared by the height of the concrete slab according to linear time-history analysis to reveal the effect of reservoir water. The changes of critical displacements and principal stresses with time are also shown in this paper. According to linear and nonlinear time-history analysis, the effect of the reservoir water on the earthquake performance of the Torul CFR Dam was investigated and the possible damage situation examined. According to this study, while damage occurs for linear analysis, it does not appear for nonlinear analysis. Hydrodynamic pressure increases the displacements and principle components and thereby it clearly reduces the earthquake performance of the dam.