Seismic Performance Evaluation of Urban Bridge using Static Nonlinear Procedure, Case Study: Hafez Bridge

作     者：A. Nicknam A. Mosleh H. Hamidi Jamnani 

作者机构：Assistant Professor School of Civil Engineering Iran University of Science & Technology P.O. Box 16765-163 Narmak Tehran IRAN M.Sc. School of Civil Engineering Iran University of Science & Technology PhD Student School of Civil Engineering Iran University of Science & Technology 

出 版 物：《Procedia Engineering》 

年 卷 期：2011年第14卷

页      面：2350-2357页

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 

主　　题：urban bridge nonlinear static analysis seismic performance PSHA 

摘      要：Bridges as key elements in the lifeline of each country or urban transportation play a fundamental role economically, politically and militarily. The possibility of severe damage to bridges that are subjected to earthquake leads to the necessity of seismic evaluation of existing bridges, particularly those which have been either designed regardless of earthquake effects or according to moderate earthquake-resistant consideration. The assessment of safety and stability of these bridges while passing increasingly traffic is of high importance in their seismic performance. In this study, an urban steel bridge in metropolitan Tehran which is accounted for as an important structure in the city transportation is studied using nonlinear static procedure at two hazard levels. The hazard levels were obtained by the use of probabilistic seismic hazard analysis (PSHA). Three-dimensional model of the mentioned bridge is developed and analyzed using nonlinear static procedure (NSP) thus its seismic performance is evaluated accordingly. The results show the vulnerability of this steel bridge during earthquake and the necessity of retrofitting for improving its seismic behaviour.