Abstract
Based on spatial finite element analysis method, the Influence of pavement on fatigue performance of orthotropic steel deck was analyzed in terms of pavement system, asphalt pavement stiffness. The result shows that compared with asphalt pavement system, RPC pavement system can not only obviously improve the stress condition of steel bridge deck, but also significantly extend the fatigue life of steel bridge panel; Increasing the stiffness of pavement layer can obviously reduce the stress amplitude of fatigue details, especially for direct contact with the pavement.
Highlights
As the protective layer of steel deck plates, bridge pavement’s relative stiffness is large, and its material properties have a large impact on the fatigue properties of the steel deck.Many scholars have conducted research on this issue
Since the provisions about fatigue check of steel bridge on China's current bridge design Specifications are relatively backward, and don’t have checking fatigue load spectrum, especially lacking of clear design concept for fatigue problems of orthotropic steel deck. it has certain practical significance to discuss the influence of pavement and construction details on the fatigue properties of urban continuous bridge deck
According to the European norms Eurocode 1, in orthotropic steel box girder of a city overpass as an example, this paper summarized the results of previous studies, made a research on fatigue stress analysis and life assessment of bridge deck, discussed the effects of elastic modulus, pavement layer thickness on fatigue stress amplitude of steel deck
Summary
As the protective layer of steel deck plates, bridge pavement’s relative stiffness is large, and its material properties have a large impact on the fatigue properties of the steel deck. Tongji University Chong Wu [1]. Adopted ABAQUS finite element program, in large-span cable-stayed bridge and suspension as an example, discussed the effects of elastic modulus, pavement layer thickness and other factors on fatigue stress amplitude of steel deck. According to the European norms Eurocode 1, in orthotropic steel box girder of a city overpass as an example, this paper summarized the results of previous studies, made a research on fatigue stress analysis and life assessment of bridge deck, discussed the effects of elastic modulus, pavement layer thickness on fatigue stress amplitude of steel deck
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