Open Access

ARTICLE

Influence of Vertical Irregularity on the Seismic Behavior of Base Isolated RC Structures with Lead Rubber Bearings under Pulse-Like Earthquakes

by Ali Mahamied¹, Amjad A. Yasin¹, Yazan Alzubi^1,*, Jamal Al Adwan¹, Issa Mahamied²

1 Civil Engineering Department, Faculty of Engineering Technology, Al-Balqa Applied University, Amman, 11134, Jordan
2 Civil Engineering Department, Faculty of Engineering, The University of Jordan, Amman, 11134, Jordan

* Corresponding Author: Yazan Alzubi. Email:

Structural Durability & Health Monitoring 2023, 17(6), 501-519. https://doi.org/10.32604/sdhm.2023.028686

Received 02 January 2023; Accepted 24 May 2023; Issue published 17 November 2023

Abstract

Nowadays, an extensive number of studies related to the performance of base isolation systems implemented in regular reinforced concrete structures subjected to various types of earthquakes can be found in the literature. On the other hand, investigations regarding the irregular base-isolated reinforced concrete structures’ performance when subjected to pulse-like earthquakes are very scarce. The severity of pulse-like earthquakes emerges from their ability to destabilize the base-isolated structure by remarkably increasing the displacement demands. Thus, this study is intended to investigate the effects of pulse-like earthquake characteristics on the behavior of low-rise irregular base-isolated reinforced concrete structures. Within the study scope, investigations related to the impact of the pulse-like earthquake characteristics, irregularity type, and isolator properties will be conducted. To do so, different values of damping ratios of the base isolation system were selected to investigate the efficiency of the lead rubber-bearing isolator. In general, the outcomes of the study have shown the significance of vertical irregularity on the performance of base-isolated structures and the considerable effect of pulse-like ground motions on the buildings’ behavior.

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Keywords

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