Reinforced Concrete Column-Supported Hyperboloid Cooling Tower Stability Assessment for Seismic Loads

In recent years, th e use of larger reinforced concrete (r.c.) column-supported hyperboloidcooli ng t owers has been increased signifi cantl y. t hus, th e investigati on on failure criter ia fo rst ructu ral comp onents of such stru ctu res under different loads has been found as an essent ialneed. const ruction of cooling towers in seismic zones initiated th e st udy on t he dynamic behaviorof such stru ctures due to seismic loads. in t his paper, fi nite element analyses have been performedto obt ain th e st ress concent ration, nonlinear behavior, stabilit y or safety fact or of th e r. c. towerdue to earth quake loads. outcomes of th e st udy show that considerable plast ic hinges werecreated in t he .' shape long colu mns of t he r.c. hyperbo loid coo ling tower due to seismic loads,which resulted in a signi ficant decrease in th e stabilit y safety fact or and, th us, an increase inconcerns.