Calibration of Redundancy Factors for Highway Bridges

by Michel Ghosn, City Coll of New York, New York City, United States,
Fred Moses, City Coll of New York, New York City, United States,

Document Type: Proceeding Paper

Part of: Probabilistic Mechanics and Structural and Geotechnical Reliability


The object of this study is to develop a framework for considering redundancy in design and load capacity evaluation of highway bridge superstructures. The proposed method consists of calibrating redundancy factors using structural reliability theory. The results of nonlinear analysis of typical bridge structures are used to estimate the total capacity of bridges to withstand collpase or large levels of damage. These are associated with statistical data on bridge strength and live loads to calibrate system redundancy factors.

Subject Headings: Highway bridges | Load factors | Calibration | Highway and road design | Bridge design | Bridge tests | Load bearing capacity | Structural reliability

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