A study on ultimate vertical bearing capacity of spread foundations of sand-clay two layers ground
A study on ultimate vertical bearing capacity of spread foundations of sand-clay two layers ground
A rigid–plastic finite element analysis was used to study the bearing capacity of a two-layered ground consisting of sand and clay in the upper and lower layers, respectively. In general, a phenomenon in which a load propagating through a sand layer is distributed over a clay layer and applied to shear the clay layer is called distributed failure. Depending on the strength ratio of sand and clay, either the sand layer fails or distributed failure occurs in the clay layer. In addition, size effects occur when the foundation width increases in the sand layer. In this study, the ultimate bearing capacity of a spread foundation of two layers of sand and clay was examined using a higher-order function as a constitutive equation that considers the size effect. When the strength of the lower clay layer was relatively low, dispersion fractures were likely to occur.
Kazuhiro Kaneda; S. Ohtsuka
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
A - New developments on structural design
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