Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Introducing a New Method for Construction of Cable-Stayed Bridges without the Need for Final Adjustment of Cable Tension

Document Type : Original Article

Authors
1 Ph.D. candidate, Faculty of Engineering, University of Qom, Qom, Iran
2 Associate professor, Faculty of Engineering, University of Qom, Qom, Iran
Abstract
Cables are essential components of cable stayed bridges, contributing to their safety and optimal design conditions. Various methods have been proposed to adjust cable tension in order to achieve optimal design forces for cables and other bridge components. Different construction analysis methods, such as forward and backward analysis, have also been introduced to ensure the attainment of cable design forces during construction. Most of the existing construction methods for cable-stayed bridges require multiple adjustments of cable tension at each construction stage, which often result in deviations from the desired geometric shape of the final bridge due to execution errors. In this research, a new method is presented for constructing cable stayed bridges without the need for readjustment of cable tension, by investigating the impact of initial cable tension variations on the overall stiffness, resistance, and safety of the bridge, and proposing an alternative approach. To validate this approach, a three-span cable-stayed bridge is investigated as a case study using nonlinear static analysis. and the proposed method for constructing cable-stayed bridges was evaluated on this particular bridge. The proposed method offers a simpler and more efficient approach to constructing cable stayed bridges without compromising the safety and durability of the structure.
Keywords

Subjects


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Volume 11, Issue 8 - Serial Number 85
November 2024
Pages 231-250

  • Receive Date 15 July 2023
  • Revise Date 27 January 2024
  • Accept Date 14 March 2024