Arch dams are designed for the same loads as other dams with the exception of the temperature load, which has a significant influence in arch dam design as compared to gravity dam design. In concrete arch dams, because of the particular geometry, solar radiation shares of exposed surfaces vary spatially through downstream face. In this case, threedimensional temperature distribution analysis is...

The propagation of dam-break waves on different rough beds was observed to be quasi-steady in the range $11.3 < x/h_{dam} 18.8$ , where $x$ is measured from dam position. These speeds converge with steady ideal fluids model Stoker ( Water Waves 1957, Interscience) when tailwater depth $h_2$ becomes greater than ${\sim }0.5k_s$ $0.001< k_s/h_{dam}< 0.2$ $k_s$ roughness and $h_{dam}$ beh...

Most of the existing concrete dams are subjected to cracking. These cracks are caused by various factors such as construction practices, curing, loads and volume change of mass concrete which reduce the efficiency, failure or instability of concrete dams. Using fracture mechanics as a new method to estimate stability and durability of concrete dams is recommended in scientific publications in w...

In present study, the effect of reservoir length on seismic performance of concrete gravity dam has been investigated. Monte Carlo probabilistic analysis has been used to achieve a sensitivity of the responses to variation of truncated reservoir length in finite element model. The ANSYS software based on finite element method is applied for modeling and analysis. The Pine Flat dam in California...

Dynamic dam-foundation interaction is great important in the design and safety assessment of dam structures. Two classic boundary conditions, i.e., viscous-spring viscous boundary, are employed to consider radiation damping unbounded rock foundation. The input models seismic excitation derived. accuracy two conditions dynamic analysis foundation verified through using an impulsive load. influen...

The current paper's goal is to investigate how dynamic interaction phenomena and material nonlinearities affect the behavior of a concrete gravity multi-arch dam in terms maximum displacements, natural stresses, principal Von Mises stresses when subjected seismic excitation. Utilizing ANSYS APDL software, linear nonlinear transient analysis using finite element method was employed analyze betwe...

Abstract The stability evaluation of the dams subjected to seismic excitations is really very complex as earthquake response concrete gravity dam depends upon its connection joints with foundation rock. This study presents considering welded contact and friction along dam-foundation rock interface. Friction provided using elements. Two-dimensional finite element model Oued Fodda dam, located in...