Study on the Application of Determinant-MTMD(TMDD) Vibration Reduction in Cable-Supported Pedestrian Suspension Bridge
In this study, multiple tuned mass dampers (MTMDs) were studied to understand their impact on the human-induced vibration response and comfort level of a pedestrian cable-supported suspension bridge. A spatial finite element model based on a specific engineering case was established. The dynamic cha...
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2024-10-01
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| author | Zhen Li Dejian Li Jincheng Li Chenxi Zhao Xuezhi Cheng Yao Lu |
| author_facet | Zhen Li Dejian Li Jincheng Li Chenxi Zhao Xuezhi Cheng Yao Lu |
| author_sort | Zhen Li |
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| description | In this study, multiple tuned mass dampers (MTMDs) were studied to understand their impact on the human-induced vibration response and comfort level of a pedestrian cable-supported suspension bridge. A spatial finite element model based on a specific engineering case was established. The dynamic characteristics of the bridge under human-induced loads were investigated, and its comfort level under human-induced vibrations was analyzed using the time-history method. Then, this study adjusted the design parameters of the dampers based on various optimal damper parameter expressions. Furthermore, the damping effectiveness of MTMD under different mass ratios (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>μ</mi></mrow></semantics></math></inline-formula>) was evaluated, and it was found that increasing the mass ratio significantly impacts damping performance. Finally, determinant-TMD (TMDD) was introduced, and a comparison between the damping effect, robustness, and performance of TMDD and MTMD was conducted. The results indicate that while increasing the mass ratio does not linearly affect maximum vibration acceleration, the damping effect increases initially and then stabilizes, with a damping rate converging at approximately 55%. However, with the TMDD approach, the maximum damping rate can reach approximately 70%, enhancing comfort levels from the “minimum CL3” achieved with MTMD to the “medium CL2” level. Additionally, while TMDD’s robustness is slightly inferior to MTMD at lower mass ratios, it demonstrates superior robustness at higher mass ratios. |
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| language | English |
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| spelling | doaj-art-0d683a45d99244a7b3cb8071096c02ce2025-08-20T01:53:44ZengMDPI AGBuildings2075-53092024-10-011411341710.3390/buildings14113417Study on the Application of Determinant-MTMD(TMDD) Vibration Reduction in Cable-Supported Pedestrian Suspension BridgeZhen Li0Dejian Li1Jincheng Li2Chenxi Zhao3Xuezhi Cheng4Yao Lu5College of Civil Engineering, Central South University, Changsha 410075, ChinaCollege of Civil Engineering, Central South University, Changsha 410075, ChinaHunan Dellson Bridge Technology Service Co., Ltd., Changsha 410075, ChinaCollege of Transportation Engineering, Tongji University, Shanghai 200070, ChinaHebei Tonghua Highway Materials Co., Ltd., Shijiazhuang 050019, ChinaCollege of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaIn this study, multiple tuned mass dampers (MTMDs) were studied to understand their impact on the human-induced vibration response and comfort level of a pedestrian cable-supported suspension bridge. A spatial finite element model based on a specific engineering case was established. The dynamic characteristics of the bridge under human-induced loads were investigated, and its comfort level under human-induced vibrations was analyzed using the time-history method. Then, this study adjusted the design parameters of the dampers based on various optimal damper parameter expressions. Furthermore, the damping effectiveness of MTMD under different mass ratios (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>μ</mi></mrow></semantics></math></inline-formula>) was evaluated, and it was found that increasing the mass ratio significantly impacts damping performance. Finally, determinant-TMD (TMDD) was introduced, and a comparison between the damping effect, robustness, and performance of TMDD and MTMD was conducted. The results indicate that while increasing the mass ratio does not linearly affect maximum vibration acceleration, the damping effect increases initially and then stabilizes, with a damping rate converging at approximately 55%. However, with the TMDD approach, the maximum damping rate can reach approximately 70%, enhancing comfort levels from the “minimum CL3” achieved with MTMD to the “medium CL2” level. Additionally, while TMDD’s robustness is slightly inferior to MTMD at lower mass ratios, it demonstrates superior robustness at higher mass ratios.https://www.mdpi.com/2075-5309/14/11/3417cable-supported pedestrian suspension bridgemultiple tuned mass dampers (MTMDs)determinant multiple tuned mass damper (TMDD)human-induced vibrationrobustness |
| spellingShingle | Zhen Li Dejian Li Jincheng Li Chenxi Zhao Xuezhi Cheng Yao Lu Study on the Application of Determinant-MTMD(TMDD) Vibration Reduction in Cable-Supported Pedestrian Suspension Bridge Buildings cable-supported pedestrian suspension bridge multiple tuned mass dampers (MTMDs) determinant multiple tuned mass damper (TMDD) human-induced vibration robustness |
| title | Study on the Application of Determinant-MTMD(TMDD) Vibration Reduction in Cable-Supported Pedestrian Suspension Bridge |
| title_full | Study on the Application of Determinant-MTMD(TMDD) Vibration Reduction in Cable-Supported Pedestrian Suspension Bridge |
| title_fullStr | Study on the Application of Determinant-MTMD(TMDD) Vibration Reduction in Cable-Supported Pedestrian Suspension Bridge |
| title_full_unstemmed | Study on the Application of Determinant-MTMD(TMDD) Vibration Reduction in Cable-Supported Pedestrian Suspension Bridge |
| title_short | Study on the Application of Determinant-MTMD(TMDD) Vibration Reduction in Cable-Supported Pedestrian Suspension Bridge |
| title_sort | study on the application of determinant mtmd tmdd vibration reduction in cable supported pedestrian suspension bridge |
| topic | cable-supported pedestrian suspension bridge multiple tuned mass dampers (MTMDs) determinant multiple tuned mass damper (TMDD) human-induced vibration robustness |
| url | https://www.mdpi.com/2075-5309/14/11/3417 |
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