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SCI Article

Vertical bearing capacity of bucket foundation in sand overlying clay
Author Park, Jeong-Seon (Dept Civil & Environm Engn); 박두희 (Dept Civil & Environm Engn);
Corresponding Author Info Park, D (reprint author), Hanyang Univ, Dept Civil & Environm Engn, Seoul, South Korea.
E-mail 씠硫붿씪 븘씠肄dpark@hanyang.ac.kr
Document Type Article
Source OCEAN ENGINEERING Volume:134 Issue: Pages:62-76 Published:2017
Times Cited 0
External Information PDF 븘씠肄http://dx.doi.org/10.1016/j.oceaneng.2017.02.015
Abstract We perform a suite of axisymmetric finite element analyses to study the load transfer mechanism and predict the vertical bearing capacity of bucket foundations in sand overlying clay profiles. We use elasto-plastic soil models following Mohr-Coulomb and Tresca failure criteria for sands and clays, respectively. A non-associated flow rule is used with the Mohr-Coulomb model to realistically simulate the dilatant behavior of sands. A broad range of strength parameters for both sands and clays are used. The aspect ratio and bucket tip-to-clay depth (d) are also varied. The traces of plastic shear strain increments are monitored to observe how the vertical load is transmitted to underlying sand and clay layers, and to study the associated failure surface. The shape of the failure surface is shown to be not unique and display complex pattern conditional on strength parameters, aspect ratio, and d. We present a suite of equations to predict the vertical base capacity. The proposed set of equations provide enhanced estimate of the base capacity compared with theoretical models. We also calculate the shaft resistance of the bucket foundations on multi-layered profiles. The shaft resistance can reliably estimated from an empirical equation developed for bucket foundations in uniform sand.
Web of Science Categories Engineering, Marine; Engineering, Civil; Engineering, Ocean; Oceanography
Funding Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2015R1A2A2A01006129]; New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Eva
Language English
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