Techno Press
Techno Press

Structural Engineering and Mechanics   Volume 28, Number 4, March10 2008, pages 411-442
DOI: http://dx.doi.org/10.12989/sem.2008.28.4.411
 
Near-fault ground motion effects on the nonlinear response of dam-reservoir-foundation systems
Alemdar Bayraktar, Ahmet Can Altunisik, Baris Sevim, Murat Emre Kartal and Temel Turker

 
Abstract     [Full Text]
    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 nearfault 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.
 
Key Words
    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.
 
Address
Alemdar Bayraktar, Ahmet Can Altunisik and Baris Sevim: Dept. of Civil Engineering, Karadeniz Technical University, 61080, Trabzon, Turkey
Murat Emre Kartal: Dept. of Civil Engineering, Zonguldak Karaelmas University, 67100, Zonguldak, Turkey
Temel Turker: Dept. of Civil Engineering, Karadeniz Technical University, 61080, Trabzon, Turkey
 

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