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ORIGINAL RESEARCH article

Front. Built Environ.
Sec. Geotechnical Engineering
Volume 10 - 2024 | doi: 10.3389/fbuil.2024.1495499
This article is part of the Research Topic Advancement of Computational Mechanics in Geotechnical Engineering View all 3 articles

Smart Modeling of Soil-Foundation Interaction using Coupled Mechanisms: A Numerical Framework for Liquefaction Risk Mitigation

Provisionally accepted
Sunita Kumari Sunita Kumari 1Dr. Sufyan Ghani Dr. Sufyan Ghani 2*Amrendra Kumar Amrendra Kumar 1
  • 1 National Institute of Technology Patna, Patna, Bihar, India
  • 2 Sharda University, Greater Noida, India

The final, formatted version of the article will be published soon.

    This study investigates the impact of nearby structures on the cyclic settlement mechanisms of shallow foundations in liquefiable soils using a numerical model based on Biot's porous media theory. The model predicts excess pore water pressure and settlement by coupling equilibrium and continuity equations, solved using an implicit time integration scheme. Soil nonlinearity under cyclic loading is represented using generalized plasticity, boundary surfaces, and non-associated models. Three scenarios are simulated to study the effect of spacing between light and heavy foundations and variation in acceleration intensity. Results show that as spacing between foundations increases, lateral displacement and settlement decrease. Excess pore water pressure generation also decreases with increased foundation spacing. Soil just below the foundation exhibits maximum settlement, decreasing with depth. When input acceleration increases from 0.1g to 0.15g and 0.2g, settlement increases by 40-55% and 90-110% respectively for both light and heavy foundations, regardless of spacing. Excess pore water pressure also increases sharply with higher acceleration intensity. The findings highlight the importance of considering foundation-soil-foundation interaction effects in liquefaction-prone urban settings and provide insights for designing resilient shallow foundations. The advanced numerical modeling approach offers engineers a more informed way to mitigate liquefaction risk and build safer, more durable structures in earthquake-prone areas.

    Keywords: Finite Element Method (FEM), Liquefaction, Foundation, spacing, acceleration intensity, Excess pore water pressure (EPWP), settlement, Cyclic load

    Received: 12 Sep 2024; Accepted: 18 Oct 2024.

    Copyright: © 2024 Kumari, Ghani and Kumar. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Dr. Sufyan Ghani, Sharda University, Greater Noida, India

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.