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Pro106

Research and application of the composite deck system composed of orthotropic steel deck and thin UHPFRC layer



Author(s) : C. Liu, W. Pan, J. Fan, J. Nie, J. Hu, J. Cui
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 533 - 542
Total Pages : 10
Language : English


Abstract: The widely used orthotropic steel deck system is vulnerable to two diseases, the fatigue cracking of steelworks and the deterioration of pavement. To overcome these two diseases, a novel composite deck system composed of an orthotropic steel deck (OSD) covered by a thin ultra-high performance fibre reinforced concrete (UHPFRC) layer was recently adopted in a super long-span suspension bridge in China. Firstly, the design essentials and details of the proposed OSD-UHPFRC composite deck was illustrated. Then a comparative study by FEM was conducted to demonstrate the stresses reduction effect of the additional UHPFRC layer under vehicle load. After that, the reliability of the OSD-UHPFRC composite deck were explored experimentally: the tensile behavior of the wet joints between precast UHPFRC layer and the cast-in-situ UHPFRC layer was investigated by tensile tests; the fatigue performance of the headed stud encased in UHPFRC layer was verified by fatigue tests. Finally, the key design and research points of the OSD-UHPFRC deck system is concluded.


Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00


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