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Research Article

Performance analysis of lead rubber bearing isolation system for low, medium and high- rise RC buildings

Mrudula Madhukumar, Helen Santhi M, Vasugi V

School of Civil Engineering, Vellore Institute of Technology, Chennai, India.

Keywords

Abstract

RC frame;


Base isolation;


Hinge formation;


Lateral displacement;


Performance level;


Ductility

Earthquakes are the most vulnerable natural hazard which causes damage to both structure and human life. Even though advanced technologies have invented some degree of predictability in terms of probabilistic measures the main challenge for the structural engineers is to design earthquake-resistant structures. The use of base isolation solutions allows a building to withstand potentially devastating seismic impacts by allowing for flexibility in between building and the foundation. The concept of base isolation system had been suggested in last few decades and getting well established in countries like US, Japan and Turkey. Properly designed and detailed building with base isolation has shown very good performance in past earthquakes and the demand of base isolation has increased. The main focus of this study is to understand the performance and efficacy of base isolation in regular multi-storey RC framed structures with varying heights using lead rubber bearing by response spectrum analysis and pushover analysis. The software used was ETABS 2018 followed by IS 1893(Part 1):2016 and ASCE 7-16 under most credible earthquake. Performance of lead rubber bearing in G+5, G+15 and G+25 storey building models was examined and compared with the fixed base buildings. All the models showed better performance with isolators than the fixed base models. However, the effectiveness of base isolators is more prominent in medium and high-rise buildings.

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LATEST News

01/01/2024 Best Paper Award: The winners of 2023 Best Paper Award of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Author Awards section.


01/01/2024 Most Cited Paper Award: The winners of 2023 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Author Awards section.


01/01/2024 Reviewer Awards: The winners of 2023 reviewer awards of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Reviewer Awards section.


8/12/2023 Special Issue: Embark on a journey of innovation with the journal of Research on Engineering Structures and Materials as we unveil a compelling opportunity for contributors in our upcoming special issue, "Design, Analysis, and Manufacturing of Composite Vehicle Structures." Led by distinguished Guest Editors Liubov Gavva and Oleg Mitrofanov from Moscow Aviation Institute. For more info see the link.


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LATEST AWARDS


2023 Reviewer Awards:

Please, visit Reviewer Awards section for the winners of the 2022 RESM reviewer awards.



2023 Best Paper Award:

The paper authored by Ferzan Fidan, Naim Aslan, Mümin Mehmet Koç entitled as “Morpho-structural and compressive mechanical properties of graphene oxide reinforced hydroxyapatite scaffolds for bone tissue applications” is awarded.



2023 Most Cited Paper Award:

The paper authored by Ercan Işık, Ehsan Harirchian, Hüseyin Bilgin, Kirti Jadhav entitled as “The effect of material strength and discontinuity in RC structures according to different site-specific design spectra" is awarded.


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