Vibration control of buildings by using partial floor loads as multiple tuned mass dampers

Abstract

Tuned mass dampers (TMDs) are considered as the most common control devices used for protecting high-rise buildings from vibrations. Because of their simplicity and efficiency, they have found wide practical applications in high-rise buildings around the world. This paper proposes an innovative technique for using partial floor loads as multiple TMDs at limited number of floors. This technique eliminates complications resulting from the addition of huge masses required for response control and maintains the mass of the original structure without any added loads. The effects of using partial loads of limited floors starting from the top as TMDs on the vibration response of buildings to wind and earthquakes are investigated. The effects of applying the proposed technique to buildings with different heights and characteristics are also investigated. A parametric study is carried out to illustrate how the behavior of a building is affected by the number of stories and the portion of the floor utilized as TMDs. Results indicate the effectiveness of the proposed control technique in enhancing the drift, acceleration, and force response of buildings to wind and earthquakes. The response of buildings to wind and earthquakes was observed to be more enhanced by increasing the story-mass ratios and the number of floor utilized as TMDs. ª 2015 The Author. Production and hosting by Elsevier B.V. on behalf of Housing and Building National Research Center. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Robust design of a multi-floor isolation system

“…In this paper, a multi‐floor isolation (MFI) technique is studied that can provide an effective and robust passive seismic protection system. In an MFI approach, main floors are isolated from the superstructure at several stories to provide a building with multiple inherent vibration suppressors without imposing any additional mass to the building . As part of this study, several MFI configurations are deterministically optimized for a test‐bed 20‐story structure.…”

“…In an MFI approach, main floors are isolated from the superstructure at several stories to provide a building with multiple inherent vibration suppressors without imposing any additional mass to the building. [18][19][20][21] As part of this study, several MFI configurations are deterministically optimized for a test-bed 20-story structure. Then, the sensitivity of the seismic performance of the optimally designed configurations with respect to deviations in the design parameters is investigated.…”

Design of Distributed Multi-Actuator Systems with Incomplete State Information for Vibration Control of Large Structures

“…For the semi-distributed actuation scheme AS2 in Figure 2b, the actuation positions are AP 2 = [1, 2,3,4,5,7,10,13,16,19] and the corresponding control location matrix has the following form: …”

“…In recent works, a variety of complex and sophisticated control systems with multiple actuation devices has been considered to provide an improved level of vibrational protection. Thus, for example, the usage of multiple Tuned Mass Dampers (TMDs) is proposed in [6][7][8], an innovative Multiple Tuned Mass Damper system that uses the building floors as TMD devices is investigated in [9,10], the combined action of TMDs and Tuned Liquid Column Dampers for control of wind-induced vibrations in super tall buildings is discussed in [11], a system of Multiple Active Tendons is proposed in [12] for vibration control of irregular buildings, and a system of Multiple Cardan Gyroscopes for vibration control of tower structures is proposed in [13]. Interstory force-actuation devices, as those schematically displayed in Figures 1b and 2, are particularly suitable to make up multi-actuator systems for large-scale structures.…”

Aplicação de tuned-mass dampers para controle de vibrações em lajes.

“…Assim, as pesquisas mais recentes sobre o tema possuem como foco a eficácia de sua utilização para diferentes distribuições, funcionalidade em estruturas para as quais sua aplicação é pouco convencional e a otimização dos seus parâmetros, como é o caso do estudo de Daniel e Lavan (2014), que apresentou uma metodologia de otimização de múltiplos Tuned-Mass Dampers para o controle passivo de vibrações sísmicas sobre construções tridimensionais irregulares, buscando minimizar a massa adicional utilizada. Outro estudo sobre a utilização de múltiplos TMD´s foi de Sakr (2015), que propôs a utilização de vários Tuned-Mass Dampers distribuídos por um número limitado de pavimentos de grandes prédios, buscando eliminar as complicações resultantes da grande massa necessária para a utilização de um único mecanismo no topo do edifício. Já Hoang et al (2016), estudou os efeitos da utilização de TMD´s para mitigar o impacto de navios em pilares de pontes, reduzindo o risco de colapso.…”