@article{ref1,
title="First-passage probability of the deflection of a cable-stayed bridge under long-term site-specific traffic loading",
journal="Advances in mechanical engineering",
year="2017",
author="Lu, Naiwei and Noori, Mohammad and Liu, Yang",
volume="9",
number="1",
pages="e1687814016687271-e1687814016687271",
abstract="Long-span bridges suffer from higher traffic loads and the simultaneous presence of multiple vehicles, which in conjunction with the steady traffic growth may pose a threat to the bridge safety. This study presents a methodology for first-passage probability evaluation of long-span bridges subject to stochastic heavy traffic loading. Initially, the stochastic heavy traffic loading was simulated based on long-term weigh-in-motion measurements of a highway bridge in China. A computational framework was presented integrating Rice's level-crossing theory and the first-passage criterion. The effectiveness of the computational framework was demonstrated through a case study of a cable-stayed bridge. Numerical results show that the upper tail fitting of the up-crossing rate is an appropriate description of probability characteristics of the extreme traffic load effects of long-span bridges. The average daily truck traffic growth increases the probability of exceedance due to an intensive heavy traffic flow and results in a higher first-passage probability, but this increased trend is weakening as the continuous increase of the traffic volume. Since the sustained growth of gross vehicle weight has a constant impact on the probability of failure, setting a reasonable threshold overload ratio is an effective scheme as a traffic management to ensure the bridge serviceability.<p /> <p>Language: en</p>",
language="en",
issn="1687-8132",
doi="10.1177/1687814016687271",
url="http://dx.doi.org/10.1177/1687814016687271"
}