Title

Comparative Performance Analysis Of Two Bridges Designed Using Aashto And Florida I-Beam Girders

Abstract

Today, almost 50% of all the new bridges built in the US are pre-stressed concrete bridges. Prestressed concrete bridges are considered due to their high strength and durability. Pre-stressed concrete girders perform well for longer spans by the application of a tensile force to reinforcing tendons. There are a number of different pre-stressed concrete girders with a variety of cross-sectional geometries and strands for a required span length and loading. AASHTO I-beams and bulb T-beams have been employed by a many Departments of Transportation as concrete bridge girders. A new prestressed beam called the Florida I-beam (FIB) is developed to replace AASHTO beams in order to enhance the efficiency, to provide a larger vertical clearance and to reduce the overall cost of bridges by reducing the number required girderswhenAASHTObeams are used. FIBs are designed to have higher load carrying capacity, more efficient fabrication, safer construction, increased lateral stiffness because of thicker top and bottom flanges. In this paper, a comparative analysis of two pre-stressed bridges, which have the same length, width and loading conditions, is presented. The first bridge has six AASHTO type III girders and the second bridge with the same general geometry and load-carrying characteristics has four FIBs. The performance of these bridges will be presented in terms of their load carrying capacity and reliability based on a number of scenarios. © 2013 Taylor & Francis Group, London.

Publication Date

12-1-2013

Publication Title

Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures - Proceedings of the 11th International Conference on Structural Safety and Reliability, ICOSSAR 2013

Number of Pages

1823-1826

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84892420024 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84892420024

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