×
Home Current Archive Editorial board
Instructions for papers
For Authors Aim & Scope Contact
Review paper

THE INVESTIGATION BASE ISOLATOR IN CONTROLLING THE RESPONSE OF THE STRUCTURES DURING EARTHQUAKES

By
Barghlame Hadi ,
Barghlame Hadi
Contact Barghlame Hadi

Department of Civil Engineering, Ilkhchi Branch, Islamic Azad University , Ilkhchi , Iran

Hojjat Hashempour Gavgani
Hojjat Hashempour Gavgani

Civil engineer, , Tabriz , Iran

Abstract

Base isolation systems are among the most successful and widely applied methods of mitigating structural vibration and damage during seismic events. These systems have been installed in numerous full-scale structures all around. There are three principal types of base isolators: Lead Rubber Bearing (LRB), High Damping Rubber Bearing (HDRB), and Friction Pendulum System (FPS). It is necessary to extensively examine the response of different LRB isolators—by combining them with re-centering and damping properties for isolated steel frame buildings experiencing several NF ground motions. The present research uses comparative-descriptive methodology and application in terms of objectives. The data needed for the study were collected using library references and through reviewing related studies conducted in the past in the same field.

Results of the current comparative investigation indicated significant reductions in the storey drift, shear, and acceleration and increment in the storey displacement. According to the findings of the current study, base isolators provide flexibility to massive structures against earthquakes. These structures are situated on rigid soils. Moreover, base isolation was found to be the most effective in controlling the response of the structures during earthquakes. Finally, shear, storey drift, and storey displacement reduce due to the use of base isolators as compared to the fixed-base structure.

References

1.
Providakis CP. Effect of LRB isolators and supplemental viscous dampers on seismic isolated buildings under near-fault excitations. Eng Struct. 2008;30:1187–98.
2.
Chandran S, M V. Analysis of Earthquake Response on RC Structure with and without Base Isolation in Different Plan Shapes. International Research Journal of Engineering and Technology (IRJET. 2017;4:1634–41.
3.
Ahmadi SL, Tadjbakhsh IG. A comparative study of performances of various base isolation systems, Part 1: Shear beam structures. Earthq Eng Struct Dyn. 1989;18:11–32.
4.
Chen C, Yeh K, F L. Adaptive fuzzy sliding model control for seismically excited bridges with lead rubber bearing isolation. Int J Uncertain Fuzz. 2009;17:705–27.
5.
Lee-Glauser GJ, Ahmadi G, Horta LG. Integrated passive/active vibration absorber for multistory buildings. ASCE J Struct Eng. 1997;123:499–504.

Citation

This is an open access article distributed under the  Creative Commons Attribution Non-Commercial License (CC BY-NC) License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 

Article metrics

Google scholar: See link

The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.