Seite - 1231 - in Book of Full Papers - Symposium Hydro Engineering

COMMISSION INTERNATIONALE DES GRANDS BARRAGES ------- VINGT-SIXIÈME CONGRÈS DES GRANDS BARRAGES Autriche, juillet 2018 ------- EFFECTS OF FOUNDATION FLEXIBILITY ON THE FAILURE PROBABILITY OF KARUN IV ARCH CONCRETE DAM IN SEISMIC CONDITION Farid MIARNAEIMI1, Gholamreza AZIZYAN2, Mohsen RASHKI3 1PhD Candidate, Civil Engineering Department, 2Assistant Professor, Civil Engineering Department, 3Assistant Professor, Department of Architectural Engineering, UNIVERSITY OF SISTAN AND BALUCHESTAN IRAN 1. INTRODUCTION Water supply techniques have always been the most important part of the human needs in all of the era. Concrete arch dams are among the main structures in today industrial life. They are built for various purposes such as hydroelectric power generation, water storage for agricultural, industrial, flood control, and preparation of drinking water. It is of particular importance to achieve an adequate safety of dams against earthquakes, because many large dams are constructed in seismic regions. 2. METHOD In this study, Response Surface Method (RSM) is used for calculate the Limit State Function (LSF) of drift failure mode of KARUN IV arch concrete dam. A three- dimensional model of dam-foundation-reservoir of the dam is created by ABAQUS 6.11 FEM software and the ratio of foundation modulus to dam modulus (Ef/Ed) is considered as the random variable. Material properties of dam and foundation are defined in linear domain and the water is modeled using equations of state (EOS). 1231