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Flexural ductility of reinforced and prestressed concrete sections with corrugated steel webs

  • Chen, X.C. (Department of Civil Engineering, The University of Hong Kong) ;
  • Au, F.T.K. (Department of Civil Engineering, The University of Hong Kong) ;
  • Bai, Z.Z. (Department of Civil Engineering, The University of Hong Kong) ;
  • Li, Z.H. (Department of Civil Engineering, The University of Hong Kong) ;
  • Jiang, R.J. (Department of Civil Engineering, The University of Hong Kong)
  • 투고 : 2015.06.10
  • 심사 : 2015.10.22
  • 발행 : 2015.10.25

초록

Prestressed concrete bridges with corrugated steel webs have emerged as one of the promising bridge forms. This structural form provides excellent structural efficiency with the concrete flanges primarily taking bending and the corrugated steel webs primarily taking shear. In the design of this type of bridges, the flexural ductility and deformability as well as strength need to be carefully examined. Evaluation of these safety-related attributes requires the estimation of full-range behaviour. In this study, the full-range behaviour of beam sections with corrugated steel webs is evaluated by means of a nonlinear analytical method which uses the actual stress-strain curves of the materials and considers the path-dependence of materials. In view of the different behaviour of components and the large shear deformation of corrugated steel webs with negligible longitudinal stiffness, the assumption that plane sections remain plane may no longer be valid. The interaction between shear deformation and local bending of flanges may cause additional stress in flanges, which is considered in this study. The numerical results obtained are compared with experimental results for verification. A parametric study is undertaken to clarify the effects of various parameters on ductility, deformability and strength.

키워드

과제정보

연구 과제 주관 기관 : Hong Kong Special Administrative Region

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피인용 문헌

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  2. Long-Term Behavior of Prestressed Concrete Bridges with Corrugated Steel Webs vol.22, pp.8, 2017, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001074
  3. Interaction of plastic hinges in prestressed concrete bridges with corrugated steel webs vol.150, 2017, https://doi.org/10.1016/j.engstruct.2017.07.036
  4. Parameters Analysis for Bending Properties of Externally Prestressed Concrete Beam with Corrugated Steel Webs vol.186, pp.2261-236X, 2018, https://doi.org/10.1051/matecconf/201818602006
  5. Effect of confinement on flexural ductility design of concrete beams vol.20, pp.2, 2015, https://doi.org/10.12989/cac.2017.20.2.129
  6. Composite box girder with corrugated steel webs and trusses – A new type of bridge structure vol.166, pp.None, 2015, https://doi.org/10.1016/j.engstruct.2018.03.047
  7. Stress analysis of a new steel-concrete composite I-girder vol.28, pp.1, 2015, https://doi.org/10.12989/scs.2018.28.1.051
  8. Comparison of long-term behavior between prestressed concrete and corrugated steel web bridges vol.30, pp.6, 2015, https://doi.org/10.12989/scs.2019.30.6.535
  9. Experimental investigation and numerical analysis of optimally designed composite beams with corrugated steel webs vol.37, pp.1, 2015, https://doi.org/10.12989/scs.2020.37.1.001
  10. Experimental and finite element study of optimal designed steel corrugated web beams vol.24, pp.9, 2021, https://doi.org/10.1177/1369433220986095
  11. Research on flexural behavior of composite box continuous girder with corrugated steel webs and trusses vol.24, pp.15, 2021, https://doi.org/10.1177/13694332211033957
  12. Concrete Additional Stress near Intermediate Support for Composite Girder Bridges with Corrugated Steel Webs vol.27, pp.3, 2022, https://doi.org/10.1061/(asce)be.1943-5592.0001817