Real-time hybrid shaking table testing method for the performance evaluation of a tuned liquid damper controlling seismic response of building structures

Lee, Sung-Kyung; Park, Eun Churn; Kang, Min; Lee, Sang‐Hyun; Chung, Lan; Park, Jihun

doi:10.1016/j.jsv.2006.12.006

Cited by 79 publications

(40 citation statements)

References 6 publications

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“…A similar substructured RTHT was performed by [36] of an active mass damper (AMD). Lee et al, [43] evaluated the vibration control effect of a scaled tuned liquid damper (TLD) for a building structure using the RTHSTT method. The TLD formed the PS and a numerical structural model of a single-and three-storey steel frame formed the NSs.…”

Section: Applications Of Real-time Hybrid Testingmentioning

confidence: 99%

An overview of seismic hybrid testing of engineering structures

McCrum¹,

Williams

2016

Engineering Structures

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An overview of research on the development of the hybrid test method is presented. The maturity of the hybrid test method is mapped in order to provide context to individual research in the overall development of the test method. In the pseudo dynamic (PsD) test method, the equations of motion are solved using a time stepping numerical integration technique with the inertia and damping being numerically modelled whilst restoring force is physically measured over an extended timescale. Developments in continuous PsD testing led to the real-time hybrid test method and geographically distributed hybrid tests. A key aspect to the efficiency of hybrid testing is the substructuring technique where the critical structural subassemblies that are fundamental to the overall response of the structure are physically tested whilst the remainder of the structure whose response can be more easily predicted is numerically modelled. Much of the early research focused on developing the accuracy and efficiency of the test method, whereas more recently the method has matured to a level where the test method is applied purely as a dynamic testing technique.Developments in numerical integration methods, substructuring, experimental error reduction, delay compensation and speed of testing have led to a test method now in use as full-scale real-time dynamic testing method that is reliable, accurate, efficient and cost effective.

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Section: Applications Of Real-time Hybrid Testingmentioning

confidence: 99%

An overview of seismic hybrid testing of engineering structures

McCrum¹,

Williams

2016

Engineering Structures

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“…They expressed that the tuning between the fundamental sloshing frequency of liquid to the natural frequency of the structure is the guiding factor to control the structural response and that higher mass ratio of damper liquid to structure leads to greater response reduction. Experimental studies employing shake table tests and real‐time‐hybrid‐testing showed that the TLD can successfully control the vibrations of multi‐story buildings to earthquake excitations.…”

Section: Introductionmentioning

confidence: 99%

Influence of tuning of passive TLD on the seismic vibration control of elevated water tanks under various tank-full conditions

Roy

Ghosh

Chatterjee

2016

Struct. Control Health Monit.

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Summary This paper focuses on the seismic vibration control of elevated water tanks (EWTs) by the passive tuned liquid damper (TLD). Because of the fluctuating water content, the EWT is a variable‐mass system resulting in a continual modification of its natural frequencies. The problem of identifying the optimal tuning of the damper for robust performance over the range of fill depths of interest in the EWT is addressed here. The nonlinear model based on shallow water wave theory simulating sloshing motion of the liquid (here water) in the TLD is utilized. The sloshing of water in the EWT itself is considered by modeling the EWT as a two‐degree‐of‐freedom system, one representing the lateral vibrational mode of the supporting tank structure, tank container and impulsive mass of the water and the other denoting the fundamental sloshing mode of the water. A time domain study on a realistic reinforced concrete shaft supported EWT with TLD subjected to harmonic and recorded accelerogram input indicates that the TLD achieves significant response reduction and that it should be tuned to the structural frequency corresponding to the half‐full to three‐fourth full tank condition for robust performance. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Kim et al (2006) investigated the characteristics of water sloshing motion in rectangular-and circular-shaped TLD as well as on TLCD by performing shake table experiments. Lee et al (2007) experimentally determined the vibration control effect of a TLD through real-time hybrid shaking table testing method (RHSTTM) for a building structure exposed to earthquake load. Tait et al (2008) investigated the performance of unidirectional and bidirectional tuned liquid damper TLDs under random excitation.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on response control of structures using multiple tuned liquid dampers under dynamic loading

Saha

Debbarma

2016

Int J Adv Struct Eng

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In this paper, the performance of multiple tuned liquid damper (MTLD) has been investigated in mitigating the response of a structure under dynamic loading, i.e., harmonic excitation. For comparative study, the responses of single-tuned liquid damper (STLD) have also been considered. A set of experiments are conducted on a scaled model of steel-structure-STLD and MTLD systems to evaluate the performance of the respective TLD models under harmonic excitation. Several excitation frequency ratios (0.5-2.0) and depth ratios (0.05-0.30) are considered for this study. The effect of resonance as well as tuned condition (x d /x s = 1) on the structural response has also been noticed. The effectiveness of the STLD and MTLDs is evaluated based on the response reduction of the structure. It has been found that the structural responses of displacement and acceleration are reduced significantly due to the installation of STLD and MTLD to the structure, respectively. Therefore, from this experimental study, it can be concluded that a TLD can successfully mitigate the response of the structure, but MTLD is not significantly more effective than an STLD when the liquid sloshing in the TLD is large.

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Real-time hybrid shaking table testing method for the performance evaluation of a tuned liquid damper controlling seismic response of building structures

Cited by 79 publications

References 6 publications

An overview of seismic hybrid testing of engineering structures

An overview of seismic hybrid testing of engineering structures

Influence of tuning of passive TLD on the seismic vibration control of elevated water tanks under various tank-full conditions

An experimental study on response control of structures using multiple tuned liquid dampers under dynamic loading

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