Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
In this paper, the control performance of the novel sealed, torsional tuned liquid column gas damper (TTLCGD) to reduce the coupled flexural torsional response of plan‐asymmetric buildings under wind or seismic loads is investigated. Applications of the TTLCGD with a sealed piping system to tall building effectively increase the modal structural damping. If the modal center of velocity lies within the floor plan, TTLCGD with its in plane curved piping section encloses this center for best efficiency. Based on the linearized equation of motion for the TTLCGD‐main structure system with respect to a selected natural frequency, the optimal parameters of TTLCGD are modally tuned by means of a geometrical transformation in analogy to the classical torsional tuned mechanical damper, TTMD, followed by fine‐tuning in the state space domain considering the influence of neighboring modes to improve the performance of TTLCGD. Numerical simulations of plan‐asymmetric space frames illustrate that TTLCGD is an effective control device in suppressing the time‐harmonic excitation and the earthquake response. Copyright © 2010 John Wiley & Sons, Ltd.
In this paper, the control performance of the novel sealed, torsional tuned liquid column gas damper (TTLCGD) to reduce the coupled flexural torsional response of plan‐asymmetric buildings under wind or seismic loads is investigated. Applications of the TTLCGD with a sealed piping system to tall building effectively increase the modal structural damping. If the modal center of velocity lies within the floor plan, TTLCGD with its in plane curved piping section encloses this center for best efficiency. Based on the linearized equation of motion for the TTLCGD‐main structure system with respect to a selected natural frequency, the optimal parameters of TTLCGD are modally tuned by means of a geometrical transformation in analogy to the classical torsional tuned mechanical damper, TTMD, followed by fine‐tuning in the state space domain considering the influence of neighboring modes to improve the performance of TTLCGD. Numerical simulations of plan‐asymmetric space frames illustrate that TTLCGD is an effective control device in suppressing the time‐harmonic excitation and the earthquake response. Copyright © 2010 John Wiley & Sons, Ltd.
Application of torsional tuned liquid column gas damper for plan‐asymmetric buildings
Fu, Chuan (Autor:in)
Structural Control and Health Monitoring ; 18 ; 492-509
01.08.2011
18 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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