Numerical studies on the application of tuned liquid dampers with screens to control seismic response of structures

Halabian, Amir M.; Torki, M.

doi:10.1002/tal.515

Cited by 12 publications

(6 citation statements)

References 12 publications

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“…Here, it is pertinent to mention that since the early days of development of the TLD, in most literature (Chang and Gu, 1999; Das and Choudhury, 2017; Fujino et al, 1988; Halabian and Torki, 2011; Kaneko and Mizota, 2000; Konar and Ghosh, 2021c; McNamara et al, 2021; Patil and Singh, 2016; Ruiz et al, 2016; Shang and Zhao, 2008; Sun et al, 1992; Tait, 2008; Tait et al, 2004; Wakahara et al, 1994; Zhang et al, 2016), the term TLD has implied the sloshing damper possibly because the other varieties gained ground much later. The term TSD has been used by a much lesser number of researchers (Bhattacharyya, 2016; Fujii et al, 1990; Kareem, 1990; Kwon and Kareem, 2020; Love et al, 2020; Modi and Munshi, 1998; Nakagaki et al, 1990).…”

Section: Classification Of Tldsmentioning

confidence: 99%

A review on various configurations of the passive tuned liquid damper

Konar

Ghosh

2022

Journal of Vibration and Control

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Passive tuned liquid dampers, being cost-effective, easy to implement, and reliable structural vibration control devices, have received significant attention from designers and researchers. Considerable works devoted to the extraction of higher damping, increase in volumetric efficiency, improvement in architectural adaptability, and use in a large spectrum of structures have led to the development of a variety of configurations of passive tuned liquid dampers. Rigorous research efforts are being devoted to the utilization of different forms of tuned liquid dampers for the vibration control of buildings, bridges, chimneys, wind turbines, etc. However, till now, only a few varieties of tuned liquid dampers have been implemented in real-life structures, while the others require further refinement. This necessitates the present work, through which a systematic review on tuned liquid dampers of various configurations for structural response reduction is presented, with a focus on the design of the dampers. To organize the review in a structured manner, the large family of tuned liquid dampers is categorized into five groups based on their energy dissipation mechanism, namely the tuned sloshing damper, tuned liquid column damper, combined tuned sloshing damper-tuned liquid column damper system, compliant liquid damper, and liquid damper with submerged tuned oscillator. The modeling, analysis, design, and performance-related aspects of the different varieties of tuned liquid dampers are covered. The advantages and applicability of the different types of tuned liquid dampers are highlighted along with their real-life installations. The current gaps in the development of the various tuned liquid damper configurations and scope of future developments are also identified.

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Section: Classification Of Tldsmentioning

confidence: 99%

A review on various configurations of the passive tuned liquid damper

Konar

Ghosh

2022

Journal of Vibration and Control

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“…Various numerical and experimental studies have been carried out on the use of other configurations of TLDs, including TLCDs, in suppressing the structural vibrations induced by seismic and wind loads [9,10]. In [11], researchers studied the seismic interaction of tall buildings and TLDs with internal screens by replacing TLDs with equivalent amplitude-dependent tuned mass dampers (TMDs). In these models, parameters of equivalent TMDs were applied to the equation of motion of structures with the assumption that TLD is of the single degree of freedom type [11].…”

Section: Nomenclaturementioning

confidence: 99%

“…In [11], researchers studied the seismic interaction of tall buildings and TLDs with internal screens by replacing TLDs with equivalent amplitude-dependent tuned mass dampers (TMDs). In these models, parameters of equivalent TMDs were applied to the equation of motion of structures with the assumption that TLD is of the single degree of freedom type [11]. The majority of previous experimental studies and nonlinear modeling efforts have been focused on understanding the behavior of rectangular or circular TLDs.…”

Section: Nomenclaturementioning

confidence: 99%

Experimental and Numerical Study on a New Double-walled Tuned Liquid Damper

Rouhani

Ahari

Saeedmonir

2022

IJE

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To endure strong ground motions in large earthquakes, structures need to be equipped with tools to damp the huge amounts of energy induced by these excitations. In conventional buildings, seismic energy is often handled by a combination of rigidity-ductility measures and energy dissipation solutions. Since these buildings often have very low damping capability, the amount of energy dissipated within their elastic behavior phase tends to be negligible. Passive dampers are vibration control systems that can serve as valuable tools for controlling strong forces and reducing the probability of structural failure under seismic loads. In Tuned Liquid Dampers (TLDs), energy is dissipated by exploiting the behavior and characteristics of the liquid contained in the damper's tank. When the structure is subjected to external stimuli, the force transferred to the damper starts moving the liquid that lies stationary in the damper's tank, getting dissipated in the process. There are various classes of TLDs with different tank shapes, aspect ratios, and mechanisms of action, each with its properties and features. Another cause of energy dissipation in TLDs, in addition to the viscosity of the liquid, is the base shear force that is applied to the damper's intersection with the main structure with a phase difference relative to the external excitation, because of the difference between hydrostatic forces exerted on the walls at the two ends of the tank. Therefore, the level of liquid interaction with the damper's walls is also a determinant of the damping of external forces and thus the seismic response of the structure. The study investigated a new type of TLD with a double-walled cylindrical tank. To examine the effect of this TLD on the seismic response, a series of models were built with different liquid heights in the tank's inner and outer walls and subjected to several seismic excitations on a shaking table. The results showed that using this type of damper reduced the seismic response of the structures. Also, the reduction in seismic response was found to change significantly with the amount of liquid in the damper.

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“…These earthquakes contain distinct pulses especially in velocity history [43] and they could generate much higher demands. [44][45][46] In order to identify such ground motions, velocity pulse-period, T P , were extracted using wavelet analysis as suggested by Baker. [47] FIGURE 4 (a) Vibration mode properties and periods of the Building 2B.…”

Section: Multi-direction Pushover Analysismentioning

confidence: 99%

Incremental dynamic collapse analysis of RC core‐wall tall buildings considering spatial seismic response distributions

Emami

Halabian

2017

Structural Design Tall Build

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Summary Despite wide‐ranging studies on fragility analysis and collapse safety assessment of short to medium‐rise reinforced concrete (RC) structures, a new interest in the topic is still valuable and even necessary for tall RC buildings. This study aims at establishing fragility relationships as well as collapse probability of high‐rise RC core‐wall buildings under maximum considered earthquake ground motions. This study is carried out in a probabilistic framework on a case study of a fully 3‐dimensional numerical model developed to simulate seismic behavior of a 42‐story building having a RC core‐wall system. Proposing planar and vertical distributions of ductility and damage indices, the incremental dynamic analysis, and the multi‐direction nonlinear static (pushover) analyses were employed to reach the research goal. Median collapse‐level capacities were defined in terms of seismic responses (e.g., ductility/damage indices) as well as several intensity measures by employing statistical analyses and cumulative density functions. Available and acceptable collapse margin ratios were next estimated to quantify collapse safety at maximum considered earthquake shaking level. On an average basis, the statistics indicated 9%–10% and 5%–6% collapse probability of the building subjected to near‐ and far‐field ground motions, respectively.

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Numerical studies on the application of tuned liquid dampers with screens to control seismic response of structures

Cited by 12 publications

References 12 publications

A review on various configurations of the passive tuned liquid damper

A review on various configurations of the passive tuned liquid damper

Experimental and Numerical Study on a New Double-walled Tuned Liquid Damper

Incremental dynamic collapse analysis of RC core‐wall tall buildings considering spatial seismic response distributions

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