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Effect of pavement maintenance cycle on the fatigue reliability of simply-supported steel I-girder bridges under dynamic vehicle loading
- Source :
- Engineering Structures. 133:124-132
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- In this study, the effect of the pavement maintenance cycle on the fatigue reliability of simply-supported steel I-girder bridges under dynamic vehicle loading is studied. The bridge model and the fatigue load model are both adopted from the Load and Resistance Factor Design (LRFD) Bridge Design Specifications of the American Association of State Highways and Transportation Officials (AASHTO). A three-dimensional vehicle-bridge coupled model is developed to simulate the vehicle-bridge interaction and used to obtain the stress ranges of the steel bridge girders under the dynamic vehicle loading. Numerical simulations are carried out to study the influence of three important parameters, including the road surface condition, bridge span length and vehicle speed, on the fatigue damage induced by the fatigue truck. The results from this study show that the bridge fatigue reliability decreases dramatically under repeated dynamic vehicle loads when the road surface condition is very poor and that the pavement maintenance cycle has a significant influence on the bridge fatigue reliability. A procedure for determining the desired pavement maintenance cycle to achieve the target fatigue reliability of steel bridge girders is developed. An example is also provided for demonstrating the proposed procedure.
- Subjects :
- Truck
Engineering
business.industry
0211 other engineering and technologies
Pavement maintenance
020101 civil engineering
02 engineering and technology
Structural engineering
Span (engineering)
Bridge (nautical)
0201 civil engineering
Stress (mechanics)
Road surface
Girder
021105 building & construction
business
Reliability (statistics)
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 01410296
- Volume :
- 133
- Database :
- OpenAIRE
- Journal :
- Engineering Structures
- Accession number :
- edsair.doi...........a96b3c31bc6155d5f0a0ca9d17f0a66e