Seismic analysis of concrete gravity dams including damfoundation-reservoir interaction

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2013
Yücel, Ali Rıza
The attractiveness of the hydroelectric power as a domestic, clean and renewable energy source increased with the rise of the energy demand within the last decade. In this context, concrete gravity dam construction gained a high momentum. Use of roller compacted concrete as a dam construction material became popular due to advantages such as reducing the construction duration and costs. Concrete gravity dams are special type of structures which requires an extensive care for their seismic analysis and design due to lack of any definite ductility providing mechanisms. Several methods are available for the dynamic analysis of concrete gravity dams. In this study seismic response of concrete gravity dams are investigated by utilizing the method of Fenves and Chopra (1984). This method considers the dam-reservoir-foundation rock interaction by taking the foundation rock flexibility effects, compressibility of the impounded water and the absorptive effect of the reservoir bottom materials into consideration. A user interface for the dynamic analysis of concrete gravity dams are developed for the engine originally developed by Fenves and Chopra (1984). The necessity of conducting response history analysis is demonstrated by the comparison of the parametric studies results with results obtained by pseudo-static analyses. Parametric studies and a deterministic sensitivity analysis were conducted to better understand the effects of parameters on the seismic response of concrete gravity dams. Fragility curves of a set of dams with typical sections and various properties were determined by damage assessments conducted with linear elastic analysis.
Citation Formats
A. R. Yücel, “Seismic analysis of concrete gravity dams including damfoundation-reservoir interaction,” M.S. - Master of Science, Middle East Technical University, 2013.