Ground motion scaling for the prediction of the seismic response of concrete gravity dams

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2014

Öğrenci: MUSTAFA BERK DUYGU

Danışman: YALIN ARICI

Özet:

Designing dams for seismic safety gains importance as the number of dams are increasing as a result of increasing need in water storage and hydropower. To define a structure’s seismic safety, scaling of accelerograms should be considered as one of the most crucial elements. Appropriate scaling of ground motion records is required to better estimate the linear and nonlinear structural response of a structure. Although, in literature, there exist numerous methods dealing with this issue, it is required to determine the most suitable ones for designing concrete gravity dams. In this study, in order to compare the effectiveness of different ground motion scaling procedures, four different ground motion scaling procedures were used. The scaling methods used in this thesis are namely, non-stationary spectral matching, scaling for ASCE-7-10, scaling of records to arithmetic mean of maximum incremental velocity and Modal Pushover Based Scaling. The two dimensional Concrete Gravity Dam models are analyzed by utilizing non-linear dynamic analyses for the selected and scaled records.