Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Structural Engineering and Mechanics Volume 21, Number 4, November10 2005 , pages 375-392 DOI: https://doi.org/10.12989/sem.2005.21.4.375 |
|
|
|
Load deformation characteristics of shallow suspension footbridge with reverse profiled pre-tensioned cables |
||
Ming-Hui Huang, David P. Thambiratnam and Nimal J. Perera
|
||
| 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. | ||
| Key Words | ||
| suspension footbridge; structural stiffness; parameter study; reverse profile; pre-tension. | ||
| Address | ||
| Ming-Hui Huang and David P. Thambiratnam; School of Urban Development, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia Nimal J. Perera; Bird & Marshall Ltd, London, England | ||