Measures to Control Vortex-induced Vibration for Shangba Branch Channel Bridge in Nanjing
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Bibliographic Details
| Author(s): |
Dazhang Han
(China Design Group Co., Ltd., Jiangsu Nanjing, China)
Xin Hua (China Design Group Co., Ltd., Jiangsu Nanjing, China) Lei Ding (China Design Group Co., Ltd., Jiangsu Nanjing, China) Rujin Ma (School of Civil Engineering, Tongji University, Shanghai, China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 435-443 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/nanjing.2022.0435 | ||||
| Abstract: |
An all-steel cable-stayed bridge with steel towers, steel box girders and cables for a main span of 500m is rarely seen at home and abroad. Due to the low damping ratio of all-steel structure, wind- induced vibration is likely to occur, especially for a single column steel tower, and twin-box girder with a total width of 54.4m is also more susceptible to vortex-induced vibration. In this paper, the aerodynamic shape of the main girder is optimized by sectional model wind tunnel test, and an aerodynamic configuration as the combination of wind fin plate and wind baffle plate to control the vortex-induced vibration (VIV) has been found. The damping effect of the main girder was also studied. The VIV and buffeting performance of the freestanding steel tower and its combined system with tower crane and construction platform were also studied. |
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| Keywords: |
wind tunnel tower crane separated steel box girder cable tower free-standing state vortex- induced vibration wind deflection angle
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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