Study on the Conversion Scheme of Steel-Concrete Composite Girder Self-Anchored Suspension Bridge System

DOI

10.2991/978-94-6463-726-7_19How to use a DOI?

Keywords

Steel-hybrid composite girder; Self-anchored suspension bridge; System conversion; Sling tensioning; Stress-free state method

Abstract

Different system conversion schemes can affect the reasonable completion state of self-anchored suspension bridges. To determine a reasonable system conversion scheme for self-anchored suspension bridges, a double tower steel-concrete composite beam self-anchored suspension bridge is taken as an example. Based on the construction process characteristics of beam first and cable later, Midas Civil is used to calculate and analyze the two schemes for system conversion of this bridge. The two suspension cable tensioning schemes, “from the main tower to the side pier” and “from the side pier to the main tower”, are compared. The stress-free state method is used to simulate the suspension cable tensioning process, and a dual element model is established to simulate the suspension cable tensioning process, which can effectively control the changes in suspension cable force. The research results indicate that the structural stress is safer during the transformation process from the side pier to the main tower. The maximum stresses of the main beam concrete slab, secondary longitudinal beam, and main beam steel beam during the suspension cable tensioning process are 9.57 MPa, 42.94 MPa, and 33.57 MPa, respectively, and the maximum deformation of the main beam does not exceed 230 mm.

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  - Cai-Lin Zheng
AU  - Shang Chen
AU  - Jie Gao
AU  - Sheng-Bo Chai
AU  - Jicheng Yang
AU  - Tao Shu
PY  - 2025
DA  - 2025/06/13
TI  - Study on the Conversion Scheme of Steel-Concrete Composite Girder Self-Anchored Suspension Bridge System
BT  - Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
PB  - Atlantis Press
SP  - 189
EP  - 197
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-726-7_19
DO  - 10.2991/978-94-6463-726-7_19
ID  - Zheng2025
ER  -