Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis

Many researchers have computed the bearing capacity of the strip and circular footings resting on the soil with the low and medium friction angle (� � 35°) by employing the finite-element method (FEM). It is reported that the numerical instability occurs with the high value of �. Thus, based on...

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Main Authors: Phuor, T., Harahap, I.S.H., Ng, C.-Y.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.28925 /
Published: American Society of Civil Engineers (ASCE) 2022
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119176008&doi=10.1061%2f%28ASCE%29GM.1943-5622.0002256&partnerID=40&md5=06c70df851b7817fbca77ea25bf9d44a
http://eprints.utp.edu.my/28925/
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spelling utp-eprints.289252022-03-16T08:43:12Z Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis Phuor, T. Harahap, I.S.H. Ng, C.-Y. Many researchers have computed the bearing capacity of the strip and circular footings resting on the soil with the low and medium friction angle (� � 35°) by employing the finite-element method (FEM). It is reported that the numerical instability occurs with the high value of �. Thus, based on the suggested values of soil dilation angle (�) in this study, the numerical computation can be achieved for all �. Therefore, this paper presents the computation of the vertical bearing capacity factors Nc, Nq, and Nγ of a rough conical footing placed on the soil with friction angle ranging from � = 5° to 45° by using the FE-based viscoplastic strain method under the Mohr-Coulomb (MC) yield criterion. The numerical simulations are solved using in-house MATLAB codes. The effects of the cone apex angle (β) and � on the bearing capacity are examined thoroughly by the computation of factors individually and compared with the available solutions. The current solutions are found to be in good agreement for Nc, Nq, Nγ values; however, the discrepancies are also observed and presented. Therefore, the bearing capacity factor charts are established, and, consequently, the ultimate load of the footing can be determined by using the superposition assumption in Terzaghi's equation. © 2021 American Society of Civil Engineers. American Society of Civil Engineers (ASCE) 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119176008&doi=10.1061%2f%28ASCE%29GM.1943-5622.0002256&partnerID=40&md5=06c70df851b7817fbca77ea25bf9d44a Phuor, T. and Harahap, I.S.H. and Ng, C.-Y. (2022) Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis. International Journal of Geomechanics, 22 (1). http://eprints.utp.edu.my/28925/
institution Universiti Teknologi Petronas
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description Many researchers have computed the bearing capacity of the strip and circular footings resting on the soil with the low and medium friction angle (� � 35°) by employing the finite-element method (FEM). It is reported that the numerical instability occurs with the high value of �. Thus, based on the suggested values of soil dilation angle (�) in this study, the numerical computation can be achieved for all �. Therefore, this paper presents the computation of the vertical bearing capacity factors Nc, Nq, and Nγ of a rough conical footing placed on the soil with friction angle ranging from � = 5° to 45° by using the FE-based viscoplastic strain method under the Mohr-Coulomb (MC) yield criterion. The numerical simulations are solved using in-house MATLAB codes. The effects of the cone apex angle (β) and � on the bearing capacity are examined thoroughly by the computation of factors individually and compared with the available solutions. The current solutions are found to be in good agreement for Nc, Nq, Nγ values; however, the discrepancies are also observed and presented. Therefore, the bearing capacity factor charts are established, and, consequently, the ultimate load of the footing can be determined by using the superposition assumption in Terzaghi's equation. © 2021 American Society of Civil Engineers.
format Article
author Phuor, T.
Harahap, I.S.H.
Ng, C.-Y.
spellingShingle Phuor, T.
Harahap, I.S.H.
Ng, C.-Y.
Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis
author_sort Phuor, T.
title Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis
title_short Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis
title_full Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis
title_fullStr Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis
title_full_unstemmed Bearing Capacity Factors for Rough Conical Footing by Viscoplasticity Finite-Element Analysis
title_sort bearing capacity factors for rough conical footing by viscoplasticity finite-element analysis
publisher American Society of Civil Engineers (ASCE)
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119176008&doi=10.1061%2f%28ASCE%29GM.1943-5622.0002256&partnerID=40&md5=06c70df851b7817fbca77ea25bf9d44a
http://eprints.utp.edu.my/28925/
_version_ 1741197171066142720
score 11.62408

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