Influence of Footing Geometry on Earthquake-Induced Structural Response

Anurag Dagaur; Vinod Kumar Modi

Influence of Footing Geometry on Earthquake-Induced Structural Response

Authors: Anurag Dagaur, Vinod Kumar Modi

Unique Paper ID: 173840
Volume: 11
Issue: 10
PageNo: 1993-1999

Keywords: Seismic Response Footing Geometry Soil-Structure Interaction Earthquake Load Structural Stability Foundation Design STAAD Pro

Abstract:
The geometry of footings plays a crucial role in the seismic response of structures by influencing load distribution, soil-structure interaction, and foundation stability. This study investigates the impact of footing geometries on earthquake-induced structural response under hard soil conditions using STAAD Pro simulations. Footings with varying length-to-width ratios (1.4:1, 1:1, and 1:1.44) were analyzed under Zone 5 earthquake conditions to assess base shear, overturning moment, and maximum displacement. The results indicate that wider footings exhibit higher overturning moments (10% increase) but lower lateral displacements (30% decrease), whereas compact footings reduce overturning moments but lead to increased displacements (up to 40%). Base shear also increased by 8-12% with larger footing dimensions. These findings emphasize the need for optimized footing selection to balance stability and flexibility in seismic design. This study provides design recommendations for enhancing seismic resilience by considering footing shape, depth, and soil compatibility. The outcomes contribute to foundation design improvements for earthquake-prone regions, ensuring structural safety and resilience.

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Cite This Article

ISSN: 2349-6002
Volume: 11
Issue: 10
PageNo: 1993-1999

Influence of Footing Geometry on Earthquake-Induced Structural Response

Available:https://ijirt.org/Article?manuscript=173840

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