Tuned Mass Damper optimization for the mitigation of human-induced vibrations of pedestrian bridges

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• 作者：Federica Tubino (1)
  Giuseppe Piccardo (1)
  
  1. DICCA - University of Genoa ; Via Montallegro 1 ; 16145 ; Genoa ; Italy
  
• 关键词：Footbridges ; Human ; induced vibrations ; Optimization ; Serviceability ; Tuned Mass Damper ; Vibration Control
• 刊名：Meccanica
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：50
• 期：3
• 页码：809-824
• 全文大小：2,056 KB
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  8. Caetano E, Cunha A, Moutinho C, Magalh茫es F (2010) Studies for controlling human-induced vibration of the Pedro e In锚s footbridge, Portugal. Part 2: implementation of tuned mass dampers. Eng Struct 32:1082鈥?091 10.1016/j.engstruct.2009.12.033" target="_blank" title="It opens in new window">CrossRef
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  21. Piccardo G, Tubino F (2012) Dynamic response of Euler- Bernoulli beams to resonant harmonic moving loads. Struct Eng Mech 44(5):681鈥?04 10.12989/sem.2012.44.5.681" target="_blank" title="It opens in new window">CrossRef
  22. Piccardo G, Tubino F (2009) Simplified procedures for the vibration serviceability analysis of footbridges subjected to realistic walking loads. Comput Struct 87:890鈥?03 10.1016/j.compstruc.2009.04.006" target="_blank" title="It opens in new window">CrossRef
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  24. Di Matteo A, Lo Iacono F, Navarra G, Pirrotta A (2014) Optimal tuning of TLCD systems in random vibrations by means of an approximate formulation. Meccanica (Submitted)
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• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Mechanics
  Civil Engineering
  Automotive and Aerospace Engineering and Traffic
  Mechanical Engineering
  
• 出版者：Springer Netherlands
• ISSN：1572-9648

文摘

The design of Tuned Mass Dampers (TMD) to satisfy serviceability requirements is becoming more and more usual in the current design of footbridges. This paper analyzes the TMD design for the mitigation of pedestrian-induced vibrations with three main objectives: the introduction of a specific TMD optimization criterion for pedestrian-induced vibrations of footbridges, a critical analysis of the applicability to this specific loading scenario of classic literature optimization criteria, and a quantification of the TMD efficiency in the reduction of the footbridge acceleration. A numerical optimization criterion is proposed, based on the maximization of an efficiency factor, defined as the ratio between the uncontrolled acceleration standard deviation and the controlled one. Optimum TMD parameters are compared with classic criteria given by the literature. A possible modification of TMD parameters that permits to keep the TMD relative displacement within prescribed limits (aspect that is often a technical requirement in the TMD design) is also discussed. Monte Carlo simulations are carried out in order to confirm the validity of the standard deviation-based optimization for the reduction of the maximum dynamic response of the bridge. An application to a real footbridge is finally presented.