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International Journal of Steel Structures

, Volume 19, Issue 1, pp 283–292 | Cite as

Catenary Equation-Based Approach for Force Finding of Cable Domes

  • Zhengrong Jiang
  • Xiaowei Liu
  • Kairong ShiEmail author
  • Quanpan Lin
  • Zijian Zhang
Article
  • 33 Downloads

Abstract

Cable forces along the cable length direction vary with deadweight. An invariant that is horizontal component force along the cable length, is introduced to characterize prestress distribution of cable domes. A new approach named catenary equation-based component force balancing method, is proposed for force finding. In the method, the relationship between the form and the horizontal component force of the cable is determined according to catenary equation of the cable. Based on the horizontal component force of one cable, the horizontal component forces of other cables can be solved from the nodal equilibrium relationship. Take the Geiger cable dome as an example, the results of force finding show that the proposed method has clear mechanical concept, high calculation accuracy and simple solving process. Thus, it can provide a new general idea for force finding of cable domes. In addition, the difference of the results of force finding is large between with deadweight considered and with deadweight ignored. Therefore, deadweight should be considered during the prestress design of cable domes.

Keywords

Cable dome Force finding Catenary equation Nodal equilibrium Cable horizontal component force 

Notes

Acknowledgements

The authors express their gratitude to the Opening Project of State Key Laboratory of Subtropical Building Science, South China University of Technology, China (Grant No. 2012KB31) and the Science and Technology Program of Guangzhou, China (Grant No. 1563000257).

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Copyright information

© Korean Society of Steel Construction 2018

Authors and Affiliations

  • Zhengrong Jiang
    • 1
    • 2
  • Xiaowei Liu
    • 1
  • Kairong Shi
    • 1
    • 2
    Email author
  • Quanpan Lin
    • 1
  • Zijian Zhang
    • 1
  1. 1.School of Civil Engineering and TransportationSouth China University of TechnologyGuangzhouChina
  2. 2.State Key Laboratory of Subtropical Building ScienceSouth China University of TechnologyGuangzhouChina

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