Earthquake Analysis of Concrete Arch Dams Considering Elastic Foundation Effects

Year 2016, Volume: 2 Issue: 2, 46 - 52, 31.12.2016

Muhammet Karabulut , Murat Emre Kartal , Omer Faruk Capar , Murat Cavusli

Abstract

Dynamic effects on an arch dam should be taken into account for the ground motions. This study presents three-
dimensional linear earthquake response of an arch dam. Different ground motion effects and besides rigid and elastic foundation
conditions are considered in the finite element analyses. For this purpose, the Type 3 double curvature arch dam was selected due
to numerical solutions. All numerical analyses are carried out by SAP2000 V.17 program for empty reservoir case. In the scope of
this study, linear modal time-history analyses are performed using three dimensional finite element model of the arch dam and
arch dam-foundation interaction systems. Furthermore, near-fault and far field ground motion effects on the selected arch dam
were taken into account by different accelerograms obtained from the Loma Prieta earthquake at various distances. According to
numerical analyses, maximum horizontal displacements and maximum normal stresses are presented by height and these are
evaluated for both foundation conditions. 

Keywords

Elastic foundation, Far-field ground motion, Near-fault ground motion, Type 3 arch dam

References

• Mirzaei, E, Vahdani, S, and Mirghaderi, R. Seismic analysis of double curved arch dams based performance. In: Proceedings of the world congress on engineering and computer science (WCECS), Vol. II, San Francisco, USA; October 20–22 2010