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A significant portion of the global population resides in areas prone to seismic activity, exposing them to the risk of earthquakes with varying magnitudes and frequencies. Earthquakes consistently result in substantial loss of life and property damage. To alleviate the impact of earthquakes on buildings, the base isolation technique emerges as an effective solution. Base isolation stands out as a powerful tool in earthquake-resistant design. The fundamental concept involves minimizing the transmission of energy to the superstructure during seismic events, gaining increased acceptance over the past two decades. Previous experiences highlight the heightened vulnerability of irregular buildings compared to their regular counterparts. The application of Lead Rubber Bearings proves to be a promising technology for safeguarding diverse structures such as buildings, bridges, and airport terminals. This paper conducts a response spectrum analysis on two plans with equal area using ETAB software. The comparison involves a square-shaped (regular) and an L-shaped (irregular) building, both with G + 10 storied RC frame structures. The seismic effects of a fixed base structure are contrasted with those of a structure employing Lead Rubber Bearings as a base isolator. The results reveal that incorporating lead rubber bearings at the base of a structure leads to less damage compared to a fixed base structure.

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Seismic Performance of Regular and Irregular Buildings with Fixed Base and Lead Rubber Bearing Base Isolator

  • 会议论文

  • 发表日期：

    2025年

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  • Gaurav Gupta,
  • Kuldeep Dabhekar,
  • Dilip Mase

摘要

A significant portion of the global population resides in areas prone to seismic activity, exposing them to the risk of earthquakes with varying magnitudes and frequencies. Earthquakes consistently result in substantial loss of life and property damage. To alleviate the impact of earthquakes on buildings, the base isolation technique emerges as an effective solution. Base isolation stands out as a powerful tool in earthquake-resistant design. The fundamental concept involves minimizing the transmission of energy to the superstructure during seismic events, gaining increased acceptance over the past two decades. Previous experiences highlight the heightened vulnerability of irregular buildings compared to their regular counterparts. The application of Lead Rubber Bearings proves to be a promising technology for safeguarding diverse structures such as buildings, bridges, and airport terminals. This paper conducts a response spectrum analysis on two plans with equal area using ETAB software. The comparison involves a square-shaped (regular) and an L-shaped (irregular) building, both with G + 10 storied RC frame structures. The seismic effects of a fixed base structure are contrasted with those of a structure employing Lead Rubber Bearings as a base isolator. The results reveal that incorporating lead rubber bearings at the base of a structure leads to less damage compared to a fixed base structure.