Control of tall building vibrations by sealed tuned liquid column dampers

Hochrainer, Markus J.; Ziegler, Franz

doi:10.1002/stc.90

Cited by 83 publications

(64 citation statements)

References 20 publications

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“…Therefore, TLCDs cannot appreciably reduce maximum base-isolation subsystem displacement if the maximum response occurs early in the earthquake record, as in the case of the San Fernando ground motion. For such excitation, the use of an active TLCD device would be recommended [14,19,32]. Nevertheless, since the overall effect of the TLCD on the base-isolation system, for the considered FEMA P-695-FF record set, is a clear reduction in all structural displacement and drift ratio demands, as already highlighted in Fig.…”

Section: Analysis Of Control Performancementioning

confidence: 98%

“…To overcome the limitation of applicability to structures with very low fundamental frequencies, Ziegler and coworkers (see, e.g., [14,24,25,35]) have developed the highly innovative tuned liquid column gas damper (TLCGD), where in contrast to the TLCD both ends of the U-shaped tube are sealed, and thus, the gas-spring effect is activated [11,35], pushing the frequency range applicability of such devices up to 5 Hz [14]. Active control of pressure input into the gas volume (ATLCGD) even allows to reduce the transient structural vibration peaks, observed in the initial period of the strong motion phase of earthquakes [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Active control of pressure input into the gas volume (ATLCGD) even allows to reduce the transient structural vibration peaks, observed in the initial period of the strong motion phase of earthquakes [13,14]. Recently, several general on-off damping controller for a semi-active TLCD has been implemented [19].…”

Section: Introductionmentioning

confidence: 99%

“…In [35], Ziegler proposed a novel TLCD for mitigating vertical vibrations. Hochrainer and Ziegler [14] used for the first time a TLCD to control a base-isolated five-story generic frame structure. More recently, Khalid and Ziegler [18] studied a novel base-isolation system with effective damping supplied by a TLCGD.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the pioneering applications of Ziegler [14,18], and in the context of taking into account these attractive characteristics, in this paper the control performance of a TLCD on the seismic response of a base-isolated structure is investigated. Once the nonlinear equations of motion of a TLCD-controlled multidegree-of-freedom (MDOF) base-isolated structure are derived, the classical statistical linearization technique (SLT) is applied to analyze the statistics of the response in case of a Gaussian white noise ground excitation, and comparison with Monte Carlo simulation data is used to prove the reliability of the results.…”

Section: Introductionmentioning

confidence: 99%

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Optimal design of tuned liquid column dampers for seismic response control of base-isolated structures

et al. 2017

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In this paper, the use of a tuned liquid column damper (TLCD) as a cost-effective means to control the seismic response of a base-isolated structure is studied. A straightforward direct approach for the optimal design of such a device is proposed, considering a white noise model of the base excitation. On this base, a direct optimization procedure of the TLCD design parameters is performed and optimal design charts are presented as a ready-to-use practical design tool. Comparison with the optimal parameters obtained considering a classical iterative statistical linearization technique proves the reliability of the proposed approach. The performance of the base-isolated TLCD-controlled structure is examined and compared with that of the simple base-isolated one (without TLCD), using a set of 44 recorded ground motions as base excitation. Theoretical and numerical results show that the TLCD is rather effective in reducing the response of base-isolated structures under strong earthquakes. Therefore, considering its advantageous characteristics and its overall beneficial effects, TLCDs can be considered as practical and appealing means to control the seismic response of base-isolated structures.

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Section: Analysis Of Control Performancementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Optimal design of tuned liquid column dampers for seismic response control of base-isolated structures

et al. 2017

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A vertically acting tuned liquid column damper

Ziegler

2006

Proc Appl Math and Mech

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The U-shaped tuned liquid column damper (TLCD) increases the effective structural damping of horizontal vibrations similar to the classical tuned mechanical pendulum type damper (TMD). The pipe-in-pipe TLCD applies to vertical vibrations, likewise to the spring-mass-dashpot TMD. When sealed, the gas-spring effect extends the frequency range of application to about five Hertz. The geometric analogy between the novel TLCD and the TMD still exists, making the first step in the tuning procedure "classical". Subsequent fine tuning in state space when the TLCD is split into smaller ones in parallel action, renders an even more robust passive action. The experimentally observed averaged turbulent damping of the relative fluid flow and the weakly nonlinear gas-spring render the TLCD insensitive to overloads and parametric forcing.

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Bidirectional wind response control of 76-story benchmark building using active mass damper with a rotating actuator

Zhang

Guo

et al. 2018

Struct Control Health Monit

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A rotating actuator in the active mass damper (AMD) system for bidirectional wind response control of 76-story benchmark building is proposed in this paper. The AMD designed is able to control the structural vibration in both x and y directions simultaneously. With the introduction of rotational movement and external excitations, nonlinearity is considered in the system. The mathematical model of the nonlinear building-AMD system is derived through dividing the whole system into a linear subsystem and a nonlinear system. To suppress the wind-excited response, a decoupled sliding mode controller is designed based on Lyapunov stability theory. Simulations are conducted to prove the effectiveness of the control algorithm and the reliability of the control device. KEYWORDS 76-story benchmark, active mass damper, bidirectional wind response control, decoupled sliding mode control, Lagrange equations, rotating actuator | INTRODUCTIONDue to the rapid growth of urban population, urban living space has become increasingly strained, which results in the appearance of high-rise buildings, such as the Shanghai Tower (632 m), the Taipei 101 Tower (508 m), and the Burj Khalifa Tower (828 m). Because of larger height-to-width ratio, these high-rise structures endure larger wind-induced response than other buildings. From the view of ensuring structural safety and occupant comfort, the control of structural vibration of high-rise buildings under wind excitation is very important. [1][2][3] During last several decades, significant progress has been made in passive, active, semiactive, and hybrid control of structures against natural hazards, such as earthquakes and winds. 4-7 For seismic-induced vibration mitigation, Spencer et al. 8,9 developed the benchmark problem of active mass damper and active tendon system to evaluate the relative effectiveness and implementability of various structural control algorithms. Beside the linear benchmark structure, vibration mitigation of nonlinear benchmark structures under earthquake excitation using active mass damper were investigated by Li et al. with fuzzy logic control algorithm 10 and adaptive fuzzy sliding mode control (SMC) algorithm. 11 As for mitigation of wind-induced vibration of engineering structures, many approaches have been explored. Ankireddi and Yang 12 proposed a complete feedback controller for a 162-m tall planar frame and a 400-m tall building. Wu and Yang 13,14 studied the wind-induced vibration control of Nanjing TV transmission tower. However, the comparison of efficiency and efficacy of these control strategies cannot be realized because the structures studied were different. This obstacle persisted until Yang et al. 15 proposed the wind-excited benchmark problem with 76-story building subject to specified wind loads. The building considered in the benchmark problem is a 76-story 306-m office tower designed for the city of Melbourne, Australia. It is a reinforced concrete building consisting of a concrete core and concrete frame.

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Control of tall building vibrations by sealed tuned liquid column dampers

Cited by 83 publications

References 20 publications

Optimal design of tuned liquid column dampers for seismic response control of base-isolated structures

Optimal design of tuned liquid column dampers for seismic response control of base-isolated structures

A vertically acting tuned liquid column damper

Bidirectional wind response control of 76-story benchmark building using active mass damper with a rotating actuator

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