Seismic Vibration Control of a Two-Way Asymmetric Tall Building Installed with Passive Viscous Dampers under Bi-Directional Excitations

International Journal of Civil Engineering

© 2020 by SSRG - IJCE Journal

Volume 7 Issue 5

Year of Publication : 2020

Authors : Nisha J. Pandit, Snehal V. Mevada, Vishal B. Patel

10.14445/23488352/IJCE-V7I5P102

How to Cite?

Nisha J. Pandit, Snehal V. Mevada, Vishal B. Patel, "Seismic Vibration Control of a Two-Way Asymmetric Tall Building Installed with Passive Viscous Dampers under Bi-Directional Excitations," SSRG International Journal of Civil Engineering, vol. 7,  no. 5, pp. 10-20, 2020. Crossref, https://doi.org/10.14445/23488352/IJCE-V7I5P102

Abstract:

The study focuses on the seismic vibration control of a two-way asymmetric, 20 storied building installed with various structural control systems such as passive linear viscous dampers (LVDs) and non-linear viscous dampers (NLVDs). The building is subjected to bi-directional seismic excitations of past earthquakes. The displacement, velocity and acceleration responses for the multi-storey asymmetric building are obtained by mathematically solving the governing equations of motion using the state space approach. Optimum parameters for the dampers are derived from the numerical study. To investigate the effectiveness of dampers in the asymmetric building, a comparative study between the controlled response and the corresponding uncontrolled response is carried out.
Moreover, the study is carried out to determine the optimum placement of dampers to be installed in the multi-storey building under consideration. Various response quantities such as top floor lateral-torsional displacement as well as acceleration at the centre of mass and storey displacement of the structure are obtained. For the present study, it is observed that lateral-torsional response quantities reduce significantly after the installation of LVDs and NLVDs.

Keywords:

Asymmetric Building, Seismic Response, Optimum, Viscous Dampers

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