Probabilistic Analysis of Torul CFR Dam Considering Friction Contact


KARTAL M. E. , BAYRAKTAR A., BAŞAĞA H. B.

Ninth International Congress on Advances in Civil Engineering, Trabzon, Turkey, 27 - 30 September 2010, pp.1-10

  • Publication Type: Conference Paper / Full Text
  • City: Trabzon
  • Country: Turkey
  • Page Numbers: pp.1-10

Abstract

This paper presents the probabilistic analysis of concrete-faced rockfill (CFR) dams using Monte Carlo Simulation (MCS) and Response Surface Method (RSM). The probabilistic toolbar of ANSYS finite element program is used to get both displacement and principal stress components. In the numerical analysis, star experimental design with quadratic function without mixed terms is used. Dam-foundation-reservoir interaction system is considered in the finite element model. Torul CFR dam and its largest section are taken into account for empty and full reservoir cases. Reservoir water is modeled by 2D fluid finite elements based on the
Lagrangian approach. Structural connections are modeled as friction contact based on Coulomb's friction law and welded contact. 1D surface-to-surface contact elements are used for friction contact. The probabilistic analysis of the CFR dam is carried out considering various design variables under gravity effect. Hydrostatic pressure increases the displacement and principle stress components according to both deterministic and probabilistic analysis. In addition, the change of probabilistic displacements is smoother than deterministic ones
in the full reservoir case.