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contributor authorYuan Luo
contributor authorDong-huang Yan
contributor authorMing Yuan
contributor authorNai-wei Lu
date accessioned2017-12-30T12:55:19Z
date available2017-12-30T12:55:19Z
date issued2017
identifier otherJHTRCQ.0000582.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4243430
description abstractFatigue truck models with deterministic parameters were developed into a stochastic vehicle flow model. A response surface method was used to approximate the function between vehicle axle weight and equivalent fatigue stresses with few training data to solve the time-consuming problem of bridge finite element analysis under traffic flow loads. A probabilistic fatigue damage modeling method was presented and applied to the rib-to-deck details of steel box girder bridges. Finally, the fatigue damage model was applied to the reliability assessment of steel box girder bridges, and influences of traffic flow parameters on structural fatigue reliability were studied. Numerical results indicate that the higher occupancy rate of heavy vehicle flow in a slow lane than in a fast lane mainly explains the decrease in the fatigue reliability of corresponding rib-to-deck details. The increase in vehicle axle weight causes a rapid decrease in the fatigue reliability index of steel box girders. The fatigue reliability index of rib-to-deck detail in the slow lane decreases from 3.42 to 0.72 when the annual linear growth factor ranges from 0 to 1%. The stochastic fatigue vehicle flow model and the probabilistic model for fatigue damage exhibit considerable potential in the probability assessment of bridge fatigue damage.
publisherAmerican Society of Civil Engineers
titleProbabilistic Modeling of Fatigue Damage in Orthotropic Steel Bridge Decks under Stochastic Traffic Loadings
typeJournal Paper
journal volume11
journal issue3
journal titleJournal of Highway and Transportation Research and Development (English Edition)
identifier doi10.1061/JHTRCQ.0000582
page62-70
treeJournal of Highway and Transportation Research and Development (English Edition):;2017:;Volume ( 011 ):;issue: 003
contenttypeFulltext


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