Undrained capacity of skirted circular foundations under fully three-dimensional loading

被引：9

作者：

Chen, Hongzhen ^{[1
]}

Shen, Zhichao ^{[2
]}

Wang, Le ^{[1
]}

Tian, Yinghui ^{[3
]}

Chu, Xuanxuan ^{[4
]}

机构：

[1] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin, Peoples R China

[2] South China Univ Technol, Sch Marine Sci & Engn, Guangzhou, Peoples R China

[3] Univ Melbourne, Dept Infrastructure Engn, Melbourne, Vic, Australia

[4] Univ Nottingham, Nottingham Transportat Engn Ctr, Nottingham, England

来源：

COMPUTERS AND GEOTECHNICS | 2023年 / 156卷

关键词：

Bearing capacity; Skirted circular foundation; Failure envelope; Finite element limit analysis; SHALLOW FOUNDATIONS; SUBSEA MUDMATS; FAILURE ENVELOPES; INTERFACE; STRIP; SHAPE;

D O I：

10.1016/j.compgeo.2023.105261

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Skirted circular foundations are widely used in offshore engineering, which are subjected to fully threedimensional loading caused by environmental and operational loads. In this study, finite-element limit analysis was employed to explore the undrained capacities of skirted circular foundations at varying embedment ratios and soil strength heterogeneity indices under fully three-dimensional loading. The ultimate limit state of a foundation was described by the failure envelope in the normalised H-M loading plane considering vertical and torsional load mobilisation. The effects of embedment ratio, soil strength heterogeneity index, loading angle, vertical load and torsion on the normalised failure envelopes were discussed. Several equations were proposed to describe the ultimate uniaxial capacities and failure envelopes of skirted circular foundations under different loading combinations. These equations can be used for the initial foundation design. An example was presented to illustrate the application procedure of the proposed equations in foundation design.

引用

页数：16

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