Finite Element Analysis of Strip Footing on Sand Surface Using Hypoplasticity | ||
| JES. Journal of Engineering Sciences | ||
| Article 1, Volume 53, Issue 3, May and June 2025, Pages 76-95 PDF (1.31 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.21608/jesaun.2025.349898.1405 | ||
| Author | ||
| Mohamed Ramadan* | ||
| Civil Engineering Dept., Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia Civil Engineering Dept., Faculty of Engineering, Assiut University, Assiut, Egypt | ||
| Abstract | ||
| Research has been conducted extensively on the bearing capacity of strip footings under vertical centric load. The classical solution is still extensively used in the design codes, despite the scatter values for the bearing capacity factor 𝑁𝛾 that have been suggested by various methods. Some of the variables that influence bearing capacity of sand include sand particle morphology, footing width B, mean effective stress level pˊ, and sand relative density Dr. Even though they may have the same Dr and pˊ, different soils may exhibit varying mobilization friction angles ϕm and, as a result, varying stress-strain responses. Consequently, the actual bearing capacity may not be accurately represented by the estimation of 𝑁𝛾 based on peak friction angle ϕp. A 3D Finite Element Model (3D-FEM) was implemented in the present study. A hypoplastic constitutive sand model has been employed to simulate sand behavior. It can accurately replicate the compression and shear behavior of sand within a wide range of confining pressure and density. The experimental centrifuge and one-element tests available in the literature have been employed to validate the model. The critical friction angle ϕcr has been considered as a shear strength parameter that is not dependent on pˊ, and Dr. Parametric analysis is implemented considering different parameter ranges. The primary goal is to predict the bearing capacity factor 𝑁𝛾 of a variety of sand characteristics and to provide a solution that is applicable to a wide variety of sand properties. | ||
| Keywords | ||
| finite element; strip footing; bearing capacity; sand, hypoplastic model | ||
| References | ||
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