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《Journal of Southeast University (Natural Science Edition)》 2005-06
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Fatigue fracture analysis and axle load conversion for steel bridge asphalt mixture surfacing

Xu Xunqian~(1,2) Huang Wei~1 Ling Guangping~1(~1College of Transportation,Southeast University,Nanjing 210096,China)(~2 Department of Architecture,Nantong University,Nantong 226007,China)  
Basing on the method of approximate mechanics,the mechanical behavior and fatigue fracture characteristic of steel bridge asphalt mixture surfacing under repeated load was analyzed.Adopting the viscous-elastic method of energy conversion,the stress,strain and fracture distribution or evolvement rules of the composite structure of steel bridge deck asphalt mixture surfacing were explored.According to the dynamic evolvement rules of the stress,strain and fracture distribution or fatigue cracking mechanism,fatigue equation and axle load conversion of the steel bridge deck asphalt mixture surfacing are proposed.Finally,the fatigue equation and axle load conversion are applied to forecast the steel bridge deck pavement's service life of Nanjing Second Yangtze River Bridge.
【CateGory Index】: U443.33
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