The Influence of Foundation Systems on the Performance of Base-Isolated Structures: A Critical Review

Abstract:

Seismic base isolation has emerged as one of the most effective strategies for mitigating vibrations induced by seismic excitations in structures. However, its efficiency can be compromised if the foundation system is incompatible with the isolator type or soil conditions, leading to undesirable structural responses during seismic events. While extensive research exists on isolator mechanisms and damping performance, comparatively fewer studies address the influence of foundation systems on the overall efficiency of base-isolated structures. This paper reviews the influence of foundation type and soil conditions on the performance of base isolation systems, emphasizing the importance of soil–structure interaction (SSI) and energy dissipation capacity. A comprehensive literature review of studies published over the last decade is presented, focusing on the comparative performance of shallow, deep, and hybrid foundations in supporting passive base-isolation systems. Findings indicate that shallow foundations, such as mat and spread footings, are effective for low to mid-rise structures on stiff soils, whereas deep and hybrid foundations offer superior stability and isolation efficiency in soft or liquefiable soil conditions. The study concludes that integrating foundation design with base-isolation mechanisms is essential for optimizing seismic performance.

• Periodical: Construction Technologies and Architecture (Volume 23)
• Pages: 117-124
• DOI: https://doi.org/10.4028/p-Ru3NsC
• Online since: May 2026
• Authors: Syed Abbas Gillani*, Ahmad Ibrahim Alam, Muhammad Umair Babar, Majid Ali
• Keywords: Base Isolation, Damping Systems, Hybrid Foundation Systems, Liquefaction, Soil Structure Interaction

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