Structural Engineering and Mechanics

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Load deformation characteristics of shallow suspension footbridge with reverse profiled pre-tensioned cables

  • Huang, Ming-Hui (School of Urban Development, Queensland University of Technology) ;
  • Thambiratnam, David P. (School of Urban Development, Queensland University of Technology) ;
  • Perera, Nimal J. (Bird & Marshall Ltd.)
  • Received : 2004.09.09
  • Accepted : 2005.08.11
  • Published : 2005.11.10
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Abstract

Cable supported structures offer an elegant and economical solution for bridging over long spans with resultant low material content and ease of construction. In this paper, a model of shallow cable supported footbridge with reverse profiled pre-tensioned cables is treated and its load deformation characteristics under different quasi-static loads are investigated. Effects of important parameters such as cable sag and pre-tension are also studied. Numerical results performed on a 3D model show that structural stiffness of this bridge (model) depends not only on the cable sag and cross sectional areas of the cables, but also on the pre-tension in the reverse profiled cables. The tension in the top supporting cables can be adjusted to a high level by the pre-tension in the reverse profiled bottom cables, with the total horizontal force in the bridge structure remaining reasonably constant. It is also evident that pre-tensioned horizontally profiled cables can greatly increase the lateral horizontal stiffness and suppress the lateral horizontal deflection induced by eccentric vertical loads.

Keywords

References

  1. Austroads (1992), Australian Bridge Design Code - Section 2: Design Loads, Austroads, NSW, Australia
  2. Borri, C., Majowiecki, M. and Spinelli, P. (1993), 'The aerodynamic advantages of a double-effect large span suspension bridge under wind loading', J. Wind Eng Ind. Aerod., 48, 317-328 https://doi.org/10.1016/0167-6105(93)90143-C
  3. Brownjohn, J.M.W., Dumanoglu, A.A. and Taylor, C.A. (1994), 'Dynamic investigation of a suspension footbridge', Eng Struct., 16(6), 395-406 https://doi.org/10.1016/0141-0296(94)90054-X
  4. Cobo Del Arco, D., Aparicio, A.C. and Mari, A.R. (2001), 'Preliminary design of prestressed concrete stress ribbon bridge', J. Bridge Eng, 6(4), 234-242 https://doi.org/10.1061/(ASCE)1084-0702(2001)6:4(234)
  5. Dallard, P., Fitzpatrick, T, Flint, A., Low, A., Ridsdill Smith, R. and Willford, M. (2000), 'Pedestrian-induced vibration of footbridges', The Struct. Eng, 78(23/24), 13-15
  6. Dallard, P., Fitzpatrick, T, Flint, A., Low, A. and Ridsdill Smith, R. (2001a), 'The Millennium Bridge, London: Problems and solutions', The Struct. Eng, 79(8),15-17
  7. Dallard, P., Fitzpatrick, A.J., Flint, A., Le Bourva, S., Low, A., Ridsdill Smith, R.M. and Willford, M. (2001b), 'The London Millennium Footbridge', The Struct. Eng, 79(22), 17-32
  8. Dallard, P., Fitzpatrick, T, Flint, A., Low, A., Ridsdill Smith, R., Willford, M. and Roche, M. (2001c), 'London Millennium Bridge: Pedestrian-induced lateral vibration', J. Bridge Eng, 6(6), 412-416 https://doi.org/10.1061/(ASCE)1084-0702(2001)6:6(412)
  9. Engineering Systems Pty Ltd. (2002), Microstran V8. Users Manual, Engineering Systems Pty Limited, Turramurra, NSW, Australia
  10. Gimsing, N.J. (1998), Cable Supported Bridges: Concept & Design, 2nd ed., Chichester: John Wiley & Sons Ltd
  11. Huang, M.-H, Thambiratnam, D.P. and Perera, N.J. (2005), 'Vibration characteristics of shallow suspension bridge with pre-tensioned cables', Eng. Struct., 27,1220-1233 https://doi.org/10.1016/j.engstruct.2005.03.005
  12. Irvine, M. (1992), Cable Structures, Dover Publications, Inc., New York
  13. Morrow, P.J., Howes, G, Bridge, R.Q. and Wheen, R.J. (1983), 'Stress-ribbon bridge - A viable concept', Civil Engineering Transactions, Institution of Engineers, Australia, 25(2), 83-88
  14. Nakamura, S.-I. (2003), 'Field measurements of lateral vibration on a pedestrian suspension bridge', The Struct. Eng., 18(November), 22-26
  15. Pimer, M. and Fischer, O. (1998), 'Wind-induced vibrations of concrete stress-ribbon footbridges', J. Wind Eng. Ind Aerod, 74-76, 871-881 https://doi.org/10.1016/S0167-6105(98)00079-8
  16. Pimer, M. and Fischer, O. (1999), 'Experimental analysis of aerodynamic stability of stress-ribbon footbridges', Wind Struct., 2(2), 95-104 https://doi.org/10.12989/was.1999.2.2.095
  17. Strasky, J. (1987), 'Precast stress ribbon pedestrian bridge in Czechoslovakia', PCI Journal (Prestressed Concrete Institute), 32(3), 52-73
  18. Tanaka, T, Yoshimura, T, Gimsing, N.J., Mizuta, Y. Kang, W.-H., Sudo, M. Shinohara, T and Harada, T (2002), 'A study on improving the design of hybrid stress-ribbon bridges and their aerodynamic stability', J. Wind Eng. Ind Aerod, 90(12-15), 1995-2006 https://doi.org/10.1016/S0167-6105(02)00316-1

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