Concrete
bridge decks are damaged directly by traffic loads. However almost all fatigue
studies on model
Concrete
decks have been performed under a concentrated
pulsating load applied at a fixed point. Therefore, a fatigue analysis under a
realistically simulated moving load is needed to evaluate the performance of a
concrete bridge deck more accurately. In this study, a live load model was used
to formulate an approach to calculating extreme load for various time periods.
The maximum load effects for time periods from day one to 75 years are derived
by extrapolations and simulations. In order to predict the strengthening effect
of bridge decks
strengthened with one fiber sheet, fatigue tests were performed
and probabilistic and reliability analyses on the fatigue of concrete deck were
carried out. According to the result of the analysis, strengthened concrete
decks are found to have sufficient resistance effect against increasing truck
during service life of the bridge.