Shake Table Testing of Tuned Liquid Damper Modified with Rubber Mesh to Control Seismic Vibration of Structure

Abstract

The main focus of this paper is to minimize the response induced from seismic excitation using Tuned Liquid Damper (TLD) modified with rubber mesh. An over-head water tank was used as passive damper. A prototype structure with 20 inch by 20 inch steel plate slab and 6 ft height was constructed as a two storied prototype structural model to perform shake table experiment. Time history of El-Centro earthquake was applied as input ground motion using shake table. Different cases of rubber mesh with different water height were studied. From the uncontrolled and controlled data, it was found that in almost every case displacement decreases. Optimal water depth of rubber mesh was suggested on which displacement decreases most. From the results, it was concluded that the TLD modified with rubber mesh is very effective and efficient way to reduce structural vibration.