Seismic vibration control of building structures with multiple tuned mass damper floors integrated

Abstract

SUMMARY Floor isolation system (FIS) achieving very small floor accelerations has been used to ensure human comfortability or protect important equipments in buildings. Tuned mass damper (TMD) with large mass ratios has been demonstrated to be robust with respect to the changes in structural properties. This paper presents the concept of a TMD floor vibration control system, which takes advantages of both the FIS and TMD. Such a system is called ‘TMD floor system’ herein. The TMD floor system (TMDFS) in which building floors serve as TMDs can achieve large mass ratio without additional masses. Furthermore, multiple TMD floors installed in a building can control multimode vibrations. Then, an optimal design process, where the objective function is set as the maximum magnitude of the frequency response functions of inter‐storey drifts, is proposed to determine the TMD floor parameters. Additionally, the multimode approach is applied to determine the optimal locations of TMD floors if not all of the floors in a building can serve as TMDs. In addition to the numerical simulations, a scaled model shaking table experiment is also conducted. Both the numerical and experimental results show that the absolute accelerations of the TMD floors are smaller than those of the main structural storeys, which indicates the TMDFS maintains the merit of FIS while greatly reducing seismic responses of main structures. Copyright © 2013 John Wiley & Sons, Ltd.

Effectiveness of distributed tuned mass dampers for multi-mode control of chimney under earthquakes

“…Moon [37] had shown that the multiple tuned mass dampers (MTMDs) distributed vertically along the entire structure improved effectiveness of the control of response of the high-rise buildings. Lately, Xiang and Nishitani [58] reported that the MTMDs are effective for multi-mode control of the low-rise buildings with closely spaced frequencies under earthquake ground excitations. Effectiveness of the distributed tuned mass dampers (d-TMDs) to control the across wind vibration of 76-storey benchmark building was studied by Elias and Matsagar [15,16].…”

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

“…Finally, for the fully-distributed actuation scheme AS3 in Figure 2c, the list of actuation positions is AP 3 = [1, 3,5,7,9,11,13,15,17,19], and we obtain the control location matrix …”

“…In addition, an LMI formulation for robust non-fragile static controllers with sampled-data feedback information is obtained in [26] using a dissipativity approach. (a) Actuation Scheme 1 (b) Actuation Scheme 2 3,5,7,9,11,13,15,17,19].…”

“…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.…”

Optimal TMDS for Improving the Seismic Performance of Historical Buildings

“…In the area of passive control, much progress has been accomplished, especially in base isolation and di erent types of mechanical energy dissipaters, such as single Tuned Mass Damper (TMD) [9], double TMD [10], and multiple TMD [11][12][13][14]. The optimization of TMD parameters has been studied in structural control for many years and di erent methods have been proposed for optimal design of TMDs for linear structures, including selecting the parameters of a TMD for the undamped structure under sinusoidal excitation [15], minimization of the Root-Mean-Square (RMS) of the main structure's displacement or acceleration under white noise excitation [16], maximization of the e ective damping of the structure incorporating the TMD [17], and minimization of the di erence between the damping values of the rst two modes of the structure-TMD coupled system [18].…”