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Bearing Capacity of Ring Foundations on Sand Overlying Clay

Institute of Geotechnical Engineering, Hunan University, Changsha 410082, China
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Appl. Sci. 2020, 10(13), 4675; https://doi.org/10.3390/app10134675
Received: 3 June 2020 / Revised: 3 July 2020 / Accepted: 3 July 2020 / Published: 7 July 2020
(This article belongs to the Section Civil Engineering)
The vertical bearing capacity of rough ring foundations resting on a sand layer overlying clay soil is computed in this study by using finite element limit analysis (FELA). The sands and clays are assumed as elastoplastic models, obeying Mohr–Coulomb and Tresca failure criteria, respectively. Based on the FELA results, design charts are provided for evaluating the ultimate bearing capacity of ring foundations, which is related to the undrained shear strength of the clay, the thickness, the internal friction angle, the unit weight of the sand layer, and the ratio of the internal radius to the external radius of the footing. A certain thickness, beyond which the clay layer has a negligible effect on the bearing capacity, is determined. The collapse mechanisms are also examined and discussed. View Full-Text
Keywords: ring foundation; bearing capacity; sand overlying clay; finite element; limit analysis ring foundation; bearing capacity; sand overlying clay; finite element; limit analysis
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MDPI and ACS Style

Yang, C.; Zhu, Z.; Xiao, Y. Bearing Capacity of Ring Foundations on Sand Overlying Clay. Appl. Sci. 2020, 10, 4675. https://doi.org/10.3390/app10134675

AMA Style

Yang C, Zhu Z, Xiao Y. Bearing Capacity of Ring Foundations on Sand Overlying Clay. Applied Sciences. 2020; 10(13):4675. https://doi.org/10.3390/app10134675

Chicago/Turabian Style

Yang, Chaowei; Zhu, Zhiren; Xiao, Yao. 2020. "Bearing Capacity of Ring Foundations on Sand Overlying Clay" Appl. Sci. 10, no. 13: 4675. https://doi.org/10.3390/app10134675

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