Tuned liquid dampers for controlling earthquake response of structures

Banerji, P.; Murudi, Mohan M.; Shah, A. H.; Popplewell, N.

doi:10.1002/(sici)1096-9845(200005)29:5<587::aid-eqe926>3.3.co;2-9

Cited by 26 publications

(48 citation statements)

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“…The results are used to describe the TLD as an equivalent amplitude dependent tuned mass damper (TMD). Banerji [6] investigated through a few numerical simulations that if the TLD is properly designed, it has the ability to be effective in controlling response of structures to broadbanded excitations, such as ground motions generated by earthquakes. Jun et al [7] investigated the fluid-structure interaction of structure by analysis.…”

Section: Literature Reviewmentioning

confidence: 99%

Use of Water Tank as Tuned Liquid Damper (TLD) for Reinforced Concrete (RC) Structures

2016

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This paper describes the experimental study investigating the suitability of water tank as passive tuned liquid damper for reinforced concrete (RC) structures against earthquake's vibrations. Two 4-storey RC frame structural models with symmetrical in plan and vertical with water tank monolithically attached on top were constructed and tested on uni-axial freedom shaking table with different levels of water in water tank. El Centro earthquake time history 50 % was applied to both structures to investigate the response acceleration and deflection of the structures at fourth floor level. The efficiency of quantity of water has been investigated with reference to response acceleration and deflection recorded by data acquisition software through accelerometers and displacement transducers installed at level of fourth floor of models. It was found that the weight of water 2.5 and 2.0 % weights of structures gave minimum response acceleration and deflection for Model 1 and Model 2, respectively.

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Section: Literature Reviewmentioning

confidence: 99%

Use of Water Tank as Tuned Liquid Damper (TLD) for Reinforced Concrete (RC) Structures

2016

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“…The effectiveness of a sloshing absorber increases as free surface motion becomes more violent (Banerji et al, 2000). At shallow liquid depths of 2.75 and 5.5 mm, fluid motion is energetic.…”

Section: Experimental Observationsmentioning

confidence: 99%

“…Sloshing in the container is induced intentionally for structural control. Generally, the absorber is tuned so that the frequency of sloshing normally coincides with the natural frequency of the structure (Kareem, 1990;Banerji et al, 2000). When designed properly, the sloshing fluid oscillates out of phase from mass www.elsevier.com/locate/jfs 0889-9746/$ -see front matter & 2010 Elsevier Ltd. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

A shallow-depth sloshing absorber for structural control

Marsh

Prakash

Semercigil

et al. 2010

Journal of Fluids and Structures

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“…In order to model the liquid sloshing inside TLD, Sun et al (1992) developed a nonlinear model for a rectangular TLD which utilised the shallow water wave theory with consideration of wave breaking. Banerji et al (2000) used the formulation suggested by Sun et al (1992) to design a TLD for controlling vibration due to broadband earthquake motion. Banerji et al (2002) found discrepancies between experimental results and the analytical results obtained by using the formulation suggested by Sun et al (1992) that is probably due to the shortcomings of their shallow water model in the actual prediction of the water surface caused by wave breaking.…”

Section: Introductionmentioning

confidence: 99%

“…The response of a single-degree-of-freedom structure with an attached TLD, subjected to large amplitude harmonic base motions was studied using this theory (Samanta and Banerji 2006). It was seen that the TLD model predicts better results than the earlier TLD model used by Banerji et al (2000). This shallow water model of liquid sloshing has been used in this article to investigate the response of the structure under harmonic and earthquake type base motions.…”

Section: Introductionmentioning

confidence: 99%

Structural vibration control using modified tuned liquid dampers

Samanta

Banerji

2010

The IES Journal Part A: Civil & Structural Engineering

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A tuned liquid damper (TLD) is a passive damper consisting of a solid tank filled with water that uses the water sloshing inside it to dissipate energy. The standard TLD configuration is where a TLD is connected rigidly to the top of the building. It has been popular as a control device for wind excitation. Earlier research has shown that the TLD behaviour is amplitude dependent, i.e. it is more effective when excitation amplitude is increased and more energy is dissipated due to sloshing. A modified TLD configuration is proposed here, where the TLD rests on an elevated platform that is connected to the top of the building through a rigid rod with a flexible rotational spring at its bottom. For particular values of the rotational spring flexibility, the rotational acceleration of the rod is in phase with the structure top acceleration and the TLD base is subjected to a large amplitude acceleration that increases its effectiveness. It should be noted that when the rotational spring is rigid, the modified and standard TLD configurations are identical. It is seen that, for aiven structure with modified TLD configuration, there exists an optimum value of the rotational spring stiffness for which the effectiveness of the modified TLD is maximum. Thus, it is seen that an optimally designed modified TLD configuration may be more effective as a structural control device than a standard TLD configuration, for both harmonic and broad-band earthquake motions.

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Tuned liquid dampers for controlling earthquake response of structures

Cited by 26 publications

References 0 publications

Use of Water Tank as Tuned Liquid Damper (TLD) for Reinforced Concrete (RC) Structures

Use of Water Tank as Tuned Liquid Damper (TLD) for Reinforced Concrete (RC) Structures

A shallow-depth sloshing absorber for structural control

Structural vibration control using modified tuned liquid dampers

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