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| Vibration control on of long-span pedestrian suspension bridge based on MTMD system |
| Received:February 23, 2021 Revised:June 02, 2021 |
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| DOI：10.7511/jslx20210223001 |
| KeyWord:pedestrian suspension bridge vibration serviceability human-induced vibration control MTMD system vibration mitigation performance |
| Author | Institution |
| 沈文爱 |
华中科技大学 土木与水利工程学院, 武汉 ;华中科技大学 控制结构湖北省重点实验室, 武汉 |
| 曾东鋆 |
同济大学 土木工程学院, 上海 |
| 朱宏平 |
华中科技大学 土木与水利工程学院, 武汉 ;华中科技大学 控制结构湖北省重点实验室, 武汉 |
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| Abstract: |
| Due to large flexibility and low damping,long-span pedestrian suspension bridges are often vulnerable to excessive vibrations under pedestrian loads,leading to problems about pedestrian comfort.For such structures,effective measures need to be taken to reduce their dynamic responses.This paper presents the vibration mitigation performance of multiple tuned mass dampers (MTMD) on a pedestrian suspension bridge with a span of 600 m.We establish the finite element model of the pedestrian suspension bridge using Midas software,and compute its pedestrian-induced vibration responses based on the relevant contents in German Standard EN03,focusing on the performance analysis of the MTMD on pedestrian-induced vibration mitigation.Numerical results demonstrate that the vibration mitigation performance of the MTMD is significant if properly designed,even though the span is as long as 600 meters,and the dynamic responses of several vibration modes have been effectively suppressed.Thus the vibration serviceability can meet the requirements of the design code. |
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