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Reliability and quantity based evaluation of structural proportions of several highway precast prestressed I girderbridges designed in an earthquake region

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2019
Toker, İldem
Bridges located in earthquake regions are generally designed with using force or displacement methods specified in American and European Codes which are AASHTO and Eurocode basically. Current vision for design purposes proposes that reliability analysis requirements determine the loads, load factors and load combinations by means of statistical approach. The significant uncertainty about earthquake load resulted in use of different design approaches per different specifications. Different design methods and specifications can yield to different material quantity and reliability results. Most of the bridge earthquake design is based on a commonly preferred method that is response spectrum analysis method. The aim of the study is to identify a relation between seismic design reliability and quantity of structural members since there is a limited research on this subject. In this scope, one hundred and sixty two different bridges are analysed for six different seismic cases using finite element analysis program SAP2000. The detailed design calculations are prepared for columns.