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Research Paper | Civil and Environmental Engineering | India | Volume 9 Issue 5, May 2020
Static Pushover Analysis for Koyna Dam
Abstract: This paper explores the static pushover (SPO) analysis of concrete gravity to determine the limit state of dam based on the crack profiles. Lateral load for concrete gravity dam that presents the range of base shear caused by seismic loading is statically applied to the dam and the coefficient loads are increased until an ultimate condition is achieved. There are two types of lateral loads which are inertial loads and hydrodynamic loads. The Koyna dam has been selected as a case study for the purpose of the analysis by assuming that no sliding and rigid foundation has been estimated. This method is able to determine three limit states of the dam. The limit states proposed in this study are yielding state, first crack initiation and ultimate state which is identified base on crack pattern perform on the structure model. The displacement of yielding state for Koyna dam is 2.83cm and 4.49cm for the ultimate state. The results are able to be used as a guideline to monitor Koyna dam under seismic loadings.
Keywords: Concrete gravity dam, Static pushover, Yielding state, Ultimate state, Lateral load
Edition: Volume 9 Issue 5, May 2020,
Pages: 25 - 28
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