Research on the Influence of Different Design Parameters on the Mechanical Behavior and Deformation of Large-Span Curved Low-Pylon Cable-Stayed Bridges

DOI

10.2991/978-94-6463-726-7_77How to use a DOI?

Keywords

Curved low-pylon cable-stayed bridge; Side-to-main span ratio; Pylon height-to-span ratio; Cable-free zone length

Abstract

To thoroughly analyze the structural behavior and deformation characteristics of large-span curved low-pylon cable-stayed bridges, this study takes the Mo Zhai Wujiang Grand Bridge on the Chongqing Yuxiang Double-line Expressway as the engineering background. A spatial beam-element finite element model is established to investigate the effects of various design parameters on the structural performance and deformation of the bridge. Key parameters, including the side-to-main span ratio, pylon height-to-span ratio, and length of the cable-free zones, are examined for their influence on the structural behavior. The results indicate that rational selection of the side-to-main span ratio, pylon height-to-span ratio, and cable-free zone lengths can optimize the structural performance and deformation control of the bridge. It is recommended to maintain the side-to-main span ratio between 0.52 and 0.57, the pylon height-to-span ratio between 0.13 and 0.15, the cable-free zone length at the pylon base between 24.5 m and 44.5 m, and the mid-span cable-free zone length between 27 m and 67 m. These findings provide valuable guidance for optimizing bridge design and serve as a useful reference for the preliminary design of similar bridges.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Zuoqiao You
AU  - Lu Kuang
AU  - Xuefeng Dou
AU  - Shaohui Xiong
AU  - Chaojie Miao
PY  - 2025
DA  - 2025/06/13
TI  - Research on the Influence of Different Design Parameters on the Mechanical Behavior and Deformation of Large-Span Curved Low-Pylon Cable-Stayed Bridges
BT  - Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
PB  - Atlantis Press
SP  - 765
EP  - 774
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-726-7_77
DO  - 10.2991/978-94-6463-726-7_77
ID  - You2025
ER  -