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2021, Volume 15, Issue 4

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Frontiers of Structural and Civil Engineering >> 2021, Volume 15, Issue 4 doi: 10.1007/s11709-021-0759-z

Performance of steel bridge deck pavement structure with ultra high performance concrete based on resin bonding

1. Special Pavement Technology Center, Jiangsu SinoRoad Engineering Research Institute, Nanjing 211805, China;2. College of Civil Avlation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;1. Special Pavement Technology Center, Jiangsu SinoRoad Engineering Research Institute, Nanjing 211805, China;2. College of Civil Avlation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;1. Special Pavement Technology Center, Jiangsu SinoRoad Engineering Research Institute, Nanjing 211805, China;1. Special Pavement Technology Center, Jiangsu SinoRoad Engineering Research Institute, Nanjing 211805, China;1. Special Pavement Technology Center, Jiangsu SinoRoad Engineering Research Institute, Nanjing 211805, China

Received: 2021-03-21 Accepted: 2021-09-07 Available online: 2021-08-15
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Abstract

This research investigated a pavement system on steel bridge decks that use epoxy resin (EP) bonded ultra-high performance concrete (UHPC). Through FEM analysis and static and dynamic bending fatigue tests of the composite structure, the influences of the interface of the pavement layer, reinforcement, and different paving materials on the structural performance were compared and analyzed. The results show that the resin bonded UHPC pavement structure can reduce the weld strain in the steel plate by about 32% and the relative deflection between ribs by about 52% under standard axial load conditions compared to traditional pavements. The EP bonding layer can nearly double the drawing strength of the pavement interface from 1.3 MPa, and improve the bending resistance of the UHPC structure on steel bridge decks by about 50%; the bending resistance of reinforced UHPC structures is twice that of unreinforced UHPC structure, and the dynamic deflection of the UHPC pavement structure increases exponentially with increasing fatigue load. The fatigue life is about 1.2 × 107 cycles under a fixed force of 9 kN and a dynamic deflection of 0.35 mm, which meets the requirements for fatigue performance of pavements on steel bridge decks under traffic conditions of large flow and heavy load.

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