@article { author = {}, title = {STRUCTURAL SAFETY OF HIGH ARCH DAMS WITH VARIABLE WATER LEVELS BASED ON SEISMIC PERFORMANCE EVALUATION}, journal = {Iranian Journal of Science and Technology Transactions of Civil Engineering}, volume = {38}, number = {C1+}, pages = {175-190}, year = {2014}, publisher = {Shiraz University}, issn = {2228-6160}, eissn = {}, doi = {10.22099/ijstc.2014.1862}, abstract = {Seismic performance evaluation of arch dams under different environmental conditionsis vital for the structural safety of the existing dams. In the present paper, effects of the reservoirwater in four different levels are investigated on the seismic performance of an arch dam. Dynamicequilibrium equations of the dam-reservoir-massless foundation coupled system are solved byNewmark’s time integration algorithm. Several three-component ground motions, obtained fromdeterministic hazard analysis of the dam site, are used for excitation of the finite element model.Seismic performance evaluation is utilized considering parameters such as crest displacement,demand capacity ratio, cumulative inelastic duration and extension of the overstressed areas onupstream and downstream faces obtained from linear elastic analyses. It is found that dewateringthe reservoir leads to extension of the overstressed areas on both upstream and downstream facesand increases structural operating risk. In such a case, detailed nonlinear analyses, including jointand material nonlinearities, are required for more realistic results on crack propagation.}, keywords = {Seismic performance evaluation,variable water level,arch dam,demand capacity ratio,cumulative inelastic duration}, url = {https://ijstc.shirazu.ac.ir/article_1862.html}, eprint = {https://ijstc.shirazu.ac.ir/article_1862_4f699246f1a05752a368b2512ee11fec.pdf} }