Geomechanics and Engineering

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A two-dimensional hyperbolic spring model for mat foundation in clays subjected to vertical load

  • Der-Wen Chang (Department of Civil Engineering, Tamkang University) ;
  • Tzu-Min Chou (Department of Civil Engineering, Tamkang University) ;
  • Shih-Hao Cheng (Taiwan Building Technology Center, National Taiwan University of Science and Technology) ;
  • Louis Ge (Department of Civil Engineering, National Taiwan University)
  • Received : 2023.10.18
  • Accepted : 2024.05.21
  • Published : 2024.06.10
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Abstract

This study proposes a two-dimensional hyperbolic soil spring model for mat foundations in clays subjected to vertically uniform loads to simplify the complexity of three-dimensional finite element analysis on mat foundations. The solutions from three-dimensional finite element analysis were examined to determine the hyperbolic model parameters of the soil springs underneath the slab. Utilizing these model parameters, normalized functions across the middle section of the mat were obtained. The solutions from the proposed model, along with the approximate finite difference analysis of the mat in clays under vertical load, were found to be consistent with those from the three-dimensional finite element analysis. The authors conclude that the proposed method can serve as an alternative for the preliminary design of mat foundations.

Keywords

Acknowledgement

This paper presents a partial result of the research project sponsored by the Ministry of Science and Technology (MOST) in Taiwan. Sincere gratitude is expressed towards the financial support through research grant MOST109-2221-E-032-010-MY2.

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