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Optimal cable force sensor placement for long-span cable-stayed bridge based on sensitivity analysis
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Hong YU1, 2, 3, Wangqing WEN1, 2, Aiguo YAN1, 2, Hongping ZHU3, Xingsheng YU1, 2, Junfeng YAN1, 2
Journal of Vibration Engineering | 2025, 38(5) : 1046 - 1054
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Journal of Vibration Engineering | 2025, 38(5): 1046-1054
Optimal cable force sensor placement for long-span cable-stayed bridge based on sensitivity analysis
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Hong YU1, 2, 3, Wangqing WEN1, 2, Aiguo YAN1, 2, Hongping ZHU3, Xingsheng YU1, 2, Junfeng YAN1, 2
Affiliations
  • 1.China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China
  • 2.China Railway Construction Corporation Limited Bridge Engineering Laboratory, Wuhan 430063, China
  • 3.School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Published: 2025-05-10 doi: 10.16385/j.cnki.issn.1004-4523.2025.05.016
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At present, the layout plan of cable force sensors for cable-stayed bridges usually selects different specifications of cables and cables with large cable forces or significant stress amplitude changes for monitoring, lacking a scientific method of cable force sensor placement. This study proposes an optimal cable force sensor placement method for long cable-stayed bridges based on sensitivity analysis, aiming to identify the structural damage in cable-stayed bridges. The proposed method is based on the sensitivity analysis of cable force to structural damage, and a genetic algorithm is used to obtain the minimum number and placement position of cable force sensors that required to identify structural damage in cable-stayed bridges. In addition, engineering experience and sensor placement habits are fully considered when determining the initial population and constraint condition of genetic algorithm. The proposed method is applied to the numerical model of the Yuxi River Bridge, and the optimal cable force sensor placement for cable-stayed bridges with the target of damage identification is realized. Moreover, the influence of sensitivity threshold on the optimal placement of sensors is discussed.

cable-stayed bridge  /  cable force  /  sensor  /  optimal placement  /  sensitivity analysis
Hong YU, Wangqing WEN, Aiguo YAN, Hongping ZHU, Xingsheng YU, Junfeng YAN. Optimal cable force sensor placement for long-span cable-stayed bridge based on sensitivity analysis[J]. Journal of Vibration Engineering, 2025 , 38 (5) : 1046 -1054 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.05.016
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Year 2025 volume 38 Issue 5
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2025.05.016
  • Receive Date：2023-03-18
  • Online Date：2026-02-12
  • Published：2025-05-10
Article Data
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History
  • Received：2023-03-18
  • Revised：2023-07-24
Funding
Affiliations
    1.China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China
    2.China Railway Construction Corporation Limited Bridge Engineering Laboratory, Wuhan 430063, China
    3.School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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