Fatigue Assessment of Highway Bridges under Traffic Loading Using Microscopic Traffic Simulation
Fatigue Assessment of Highway Bridges under Traffic Loading Using Microscopic Traffic Simulation
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Date
2018-11-13
Authors
Zhao, Gengwen
Fu, Chung C.
Lu, Yang
Saad, Timothy
Advisor
Citation
Gengwen Zhao, Chung C. Fu, Yang Lu and Timothy Saad (November 13th 2018). Fatigue Assessment of Highway Bridges under Traffic Loading Using Microscopic Traffic Simulation [Online First], IntechOpen, DOI: 10.5772/intechopen.81520. Available from: https://www.intechopen.com/online-first/fatigue-assessment-of-highway-bridges-under-traffic-loading-using-microscopic-traffic-simulation
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Abstract
Fatigue is a common failure mode of steel bridges induced by truck traffic.
Despite the deterioration caused by environmental factors, the increasing truck
traffic volume and weight pose a premier threat to steel highway bridges. Given the
uncertainties of the complicated traffic loading and the complexity of the bridge
structure, fatigue evaluation based on field measurements under actual traffic flow
is recommended. As the quality and the quantity of the available long-term traffic
monitoring data and information have been improved, methodologies have been
developed to obtain more realistic vehicular live load traffic. A case study of a steel
interstate highway bridge using microscopic traffic simulation is presented herein.
The knowledge of actual traffic loading may reduce the uncertainty involved in the
evaluation of the load-carrying capacity, estimation of the rate of deterioration,
and prediction of remaining fatigue life. This chapter demonstrates a systematic
approach using traffic simulation and bridge health monitoring-based fatigue
assessment.
Notes
Partial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.