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| Configuration Study on 5 000 m Hyperbolic Parabolic Spatial Cable Suspension Bridge |
| XU Rong1, XU Wen-ping2, LI Bing3, WANG Ze-kai2, HE Ji-min2 |
1. Nanjing Censor Center of Construction Drawing Design, Nanjing Jiangsu, 210007, China;
2. College of Civil Engineering, Southeast University, Nanjing Jiangsu, 210096, China;
3. Jiangsu Traffic Engineering Consulting and Supervision Co., Ltd, Nanjing Jiangsu, 211800, China |
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Abstract This article aims to solve the wind stability problem of the super-long-span suspension bridge. According to the characteristics of the ruled surface of the hyperbolic paraboloid, the structure system of the hyperbolic parabolic space mixed cable suspension bridge is proposed. On the basis of the parallel cable suspension bridge, a carbon fiber hyperbolic parabolic space cable network is added. The parallel steel cables bear the vertical load. The hyperbolic parabolic carbon fiber space cable improves the spatial rigidity of the suspension bridge. The two cable systems work together and complement each other. Combined with the engineering background of a 5 000 m Strait Suspension Bridge, the configuration study of the hyperbolic parabolic space cable suspension bridge was carried out, and the ANSYS finite element analysis model was established to analyze and study the structural internal force and dynamic modal characteristics. The research shows that the hyperbolic parabolic space mixed cable suspension bridge has excellent spatial stiffness and wind stability performance, its torsional frequency and torsional frequency ratio are significantly improved, the critical wind speed of flutter is greatly improved, and the long-span suspension bridge is fundamentally solved Wind stability problem.
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Received: 20 October 2021
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[1] XIANG Hai-fan, GE Yao-jun. On Aerodynamic Limits to Suspension Bridges[J]. China Civil Engineering Journal, 2005, 38(1):60-70.(in Chinese)
[2] SHAO Ya-hui, GE Yao-jun, KE Shi-tang, et al. Theoretical Research on the Aerodynamic Stability of Super-long-span Suspension Bridge with a Main Span of 5000 m[J]. Journal of Experiments in Fluid Mechanics, 2012, 26(1):30-36. (in Chinese)
[3] CHEN Ze. Conceptual Design and Wind Resistance Research of the 5000 m-span Suspension Bridge with CFRP Cables[D]. Chengdu:Southwest Jiaotong University, 2016.(in Chinese)
[4] ABBAS T, KAVRAKOV I, MORGENTHAL G. Methods for Flutter Stability Analysis of Long-span Bridges:A Review[J]. Bridge Engineering, 2017, 170(4):271-310.
[5] ZHANG Xin-jun. Study of the Wind Stability of Long-span Suspension Bridges with Spatial Cable Systems[J]. China civil engineering journal, 2011, 44(6):80-86.(in Chinese)
[6] TANG H, LI Y, SHUM K M. Flutter Performance of Long-span Suspension Bridges under Non-uniform Inflow[J]. Advances In Structural Engineering, 2018, 21(2):201-213.
[7] LI Shi-wei, YANG Yong-qing, XIE Hong-wei, et al. Optimization Design of Rise Span Ratio of Suspension Bridge Structure System of Sunda Strait Bridge[J]. Journal of China & Foreign Highway, 2018, 38(6):144-147. (in Chinese)
[8] ASTIZ M A. Flutter Stability of Very Long Suspension Bridges[J].Journal of Bridge Engineering, 1998, 3(3):132-139. |
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2021, Vol. 15 
