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contributor authorSasan Siavashi
contributor authorChristopher D. Eamon
date accessioned2019-09-18T10:38:10Z
date available2019-09-18T10:38:10Z
date issued2019
identifier other%28ASCE%29BE.1943-5592.0001457.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4259638
description abstractReliability-based design optimization (RBDO) is frequently used to determine optimal structural geometry and material characteristics that can best meet performance goals while considering uncertainties. In this study, the effectiveness of RBDO to develop a load rating model for a set of bridge structures was explored, as well as the use of an alternate best selection procedure that requires substantially less computational effort. The specific problem investigated was the development of a vehicular load model for use in bridge rating, where the objective of the optimization is to minimize the variation in reliability index across different girder types and bridge geometries. Moment and shear limit states were considered, where girder resistance and load random variables were included in the reliability analysis. It was found that the proposed best selection approach could be used to develop a rating model nearly as effective as an ideal RBDO solution but with significantly less computational effort. Both approaches significantly reduced the range and coefficient of variation of the reliability index among the bridge cases considered.
publisherAmerican Society of Civil Engineers
titleDevelopment of Traffic Live-Load Models for Bridge Superstructure Rating with RBDO and Best Selection Approach
typeJournal Paper
journal volume24
journal issue8
journal titleJournal of Bridge Engineering
identifier doi10.1061/(ASCE)BE.1943-5592.0001457
page04019084
treeJournal of Bridge Engineering:;2019:;Volume ( 024 ):;issue: 008
contenttypeFulltext


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