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首页> 外文期刊>Journal of geotechnical and geoenvironmental engineering >Uniaxial Capacities of Skirted Circular Foundations in Clay
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Uniaxial Capacities of Skirted Circular Foundations in Clay

机译：粘土中圆形基础的单轴承载力

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摘要

Results of finite-element analyses calculating the undrained capacities of skirted circular foundations under uniaxial vertical, horizontal, and moment loading are presented. Parallel finite-element analyses using both the Tresca failure criterion and the modified cam clay (MCC) model are reported. The variations in capacity are presented as functions of embedment and soil-strength heterogeneity as a series of graphs. Closed-form formulas of uniaxial capacities are also provided. To account for the complexity in the results, a novel method of separating the contributions of soil above and beneath the skirt tip and for the constant and linearly varying components of the undrained shear-strength profile is outlined. This method can be used to estimate the undrained ultimate uniaxial capacity factors of skirted circular foundations in clay for any given embedment ratio and strength heterogeneity. Its versatility is also shown through validation against previously published embedded strip footing data. The results provide both equations for engineers to use in design and a database that can be used in future research to calculate and express the consolidated undrained capacity under combined loading.
机译：给出了有限元分析的结果，计算了单轴垂直，水平和弯矩荷载下裙状圆形地基的不排水能力。报告了使用Tresca破坏准则和改进的cam clay（MCC）模型的并行有限元分析。承载力的变化作为嵌入和土壤强度异质性的函数，通过一系列图表表示。还提供了单轴能力的封闭式公式。考虑到结果的复杂性，概述了一种新颖的方法，用于分离裙边上方和下方的土壤成分以及不排水的剪切强度剖面的恒定且线性变化的分量。对于任何给定的包埋率和强度非均质性，该方法可用于估计粘土中裙状圆形基础的不排水极限单轴承载力因子。通过针对先前发布的嵌入式带钢立足点数据进行验证，也显示了其多功能性。结果为工程师提供了设计中使用的方程式，并为将来的研究提供了数据库，以计算和表达组合荷载下的固结不排水能力。

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  • 来源
    《Journal of geotechnical and geoenvironmental engineering》 |2017年第7期|04017022.1-04017022.15|共15页
  • 作者

    Dengfeng Fu; Christophe Gaudin; Yinghui Tian; Mark J. Cassidy; Britta Bienen;

  • 作者单位

    Centre for Offshore Foundation Systems and ARC Centre of Excellence for Geotechnical Science and Engineering, Univ. of Western Australia, Perth, WA 6009, Australia;

    Centre for Offshore Foundation Systems, UWA Ocean Institute and ARC Centre of Excellence for Geotechnical Science and Engineering, Univ. of Western Australia, Perth, WA 6009, Australia;

    Centre for Offshore Foundation Systems and ARC Centre of Excellence for Geotechnical Science and Engineering, Univ. of Western Australia, Perth, WA 6009, Australia;

    Centre for Offshore Foundation Systems, UWA Ocean Institute and ARC Centre of Excellence for Geotechnical Science and Engineering, Univ. of Western Australia, Perth, WA 6009, Australia;

    Centre for Offshore Foundation Systems and ARC Centre of Excellence for Geotechnical Science and Engineering, Univ. of Western Australia, Perth, WA 6009, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Skirted footing; Offshore foundation; Bearing capacity; Combined loading; Clay;

    机译：裙脚立足;离岸基础;承载能力;组合加载;粘土;

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