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

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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