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Journals / Turkish Journal of Engineering / 2023 / Cilt: 7 - Sayı: 2

Enhancing the seismic performance of high-rise buildings with lead rubber bearing isolators

Ahmet Hilmi DERİNGÖL
Esra Mete GÜNEYİSİ
Pages
99–107
Publication Date
2023-04-15
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It is revealed that adjusting the isolation period in the design of LRB improved the seismic performance of the base-isolated high-rise steel buildings.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Recent earthquakes have enforced the engineering community to design seismically more efficient buildings through the energy dissipation systems.
📊
Key Findings & Data:Firstly, a 20-storey steel frame is selected as a fixed-base building, and then equipped with lead rubber bearings (LRBs).
💡
Conclusion & Impact:It is revealed that adjusting the isolation period in the design of LRB improved the seismic performance of the base-isolated high-rise steel buildings.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Base isolation · High-rise building · Isolation period

Abstract

Recent earthquakes have enforced the engineering community to design seismically more efficient buildings through the energy dissipation systems. For this purpose, this paper investigates the seismic behavior of a high-rise building with a series of base isolation systems. Firstly, a 20-storey steel frame is selected as a fixed-base building, and then equipped with lead rubber bearings (LRBs). In the modelling of LRB, isolation period is alternatively varied as 4, 4.5, and 5 sec to evaluate the effectiveness of the isolator characteristic on the seismic performance of the high-rise base-isolated buildings. The seismic responses of the fixed-base and base-isolated buildings evaluated through a series of time-history analyses are performed using natural ground motion records. The analysis results are compared using engineering demand parameters such as storey displacement, isolator displacement, relative displacement, roof drift, interstorey drift ratio, absolute acceleration, base shear, base moment, input energy, and hysteretic curve. It is revealed that adjusting the isolation period in the design of LRB improved the seismic performance of the base-isolated high-rise steel buildings.

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Cite This Article

DERİNGÖL, A. H., GÜNEYİSİ, E. M. (2023). Enhancing the seismic performance of high-rise buildings with lead rubber bearing isolators. Turkish Journal of Engineering, Cilt: 7 - Sayı: 2, 99–107. https://ajindex.com/articles/705013

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