RELIABILITY ANALYSIS OF STEEL GIRDER HIGHWAY BRIDGES
Abstract eng: The reliability index is examined for steel girder highway bridges designed by AASHTO LRFD Strength I limit state for flexure. The reliability analysis is based on the extensive stochastic finite element method (SFEM). The SFEM takes advantages of the conventional advanced first-order second-moment (AFOSM) in that it considers the mechanic connection between the critical member and other members in the whole structure. The bridges are modeled as grillage beam systems. The results obtained in this study indicate that the reliability index is very sensitive to the lateral distribution of live load. Due to overestimating the lateral distribution of live loads, the AASHTO LRFD specifications for Strength I limit state for flexure result in a conservative design of steel girder bridges.
Contributors:
Publisher:
Columbia University in the City of New York
Conference Title:
Conference Title:
15th ASCE Engineering Mechanics Division Conference
Conference Venue:
New York (US)
Conference Dates:
2002-06-02 / 2002-06-05
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-11-19, last modified 2014-11-19
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