Near-fault ground motion effects on the nonlinear response of dam-reservoir-foundation systems

Bayraktar A., Altunışık A. C., SEVİM B., Kartal M. E., TÜRKER T.

STRUCTURAL ENGINEERING AND MECHANICS, vol.28, no.4, pp.411-442, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 4
  • Publication Date: 2008
  • Doi Number: 10.12989/sem.2008.28.4.411
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.411-442
  • Keywords: arch dam, clay core rockfill dam, concrete faced rockfill dam, concrete gravity dam, dam-reservoir-foundation interaction, finite element method, near-fault strong ground motion, EARTHQUAKE ANALYSIS, DYNAMIC-RESPONSE, FINITE
  • Yıldız Technical University Affiliated: No


Ground motions in near source region of large crustal earthquakes are significantly affected by rupture directivity and tectonic fling. These effects are the strongest at longer periods and they can have a significant impact on Engineering Structures. In this paper, it is aimed to determine near-fault ground motion effects on the nonlinear response of dams including dam-reservoir-foundation interaction. Four different types of dam, which are gravity, arch, concrete faced rockfill and clay core rockfill dams, are selected to investigate the near-fault ground motion effects on dam responses. The behavior of reservoir is taken into account by using Lagrangian approach. Strong ground motion records of Duzce (1999), Northridge (1994) and Erzincan (1992) earthquakes are selected for the analyses. Displacements, maximum and minimum principal stresses are determined by using the finite element method. The displacements and principal stresses obtained from the four different dam types subjected to these near-fault strong-ground motions are compared with each other. It is seen from the results that near-fault ground motions have different impacts on the dam types.