Numerical modelling of a hybrid skirted foundation under combined loading

被引：95

作者：

Bienen, Britta ^{[1
]}

Gaudin, Christophe ^{[1
]}

Cassidy, Mark Jason ^{[1
]}

Rausch, Ludger ^{[1
]}

Purwana, Okky Ahmad ^{[2
]}

Krisdani, Henry ^{[2
]}

机构：

[1] Univ Western Australia, Ctr Offshore Fdn Syst, Perth, WA 6009, Australia

[2] Keppel Offshore & Marine Technol Ctr Pte Ltd KOMt, Singapore 628130, Singapore

来源：

COMPUTERS AND GEOTECHNICS | 2012年 / 45卷

基金：

澳大利亚研究理事会;

关键词：

Skirted foundation; Offshore foundation; Combined loading; Capacity; SHALLOW FOUNDATIONS; CAISSON FOUNDATIONS; UNDRAINED CAPACITY; BEARING CAPACITY; CLAY; SPUDCAN; BEHAVIOR;

D O I：

10.1016/j.compgeo.2012.05.009

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Offshore foundations are subject to combinations of vertical, horizontal and moment (VHM) loading. Different foundation solutions are appropriate, depending amongst others, on the expected load combinations. This paper investigates in detail the soil failure mechanisms and resulting foundation capacity under undrained VHM loading of a hybrid foundation concept. Comprising of a skirted mat combined with an internal caisson compartment, this foundation design is found to provide significantly increased horizontal capacity that is often critical in offshore applications, with key influences for increased moment capacity identified as well. The numerical study investigated both variations in the geometry of the internal caisson compartment and the soil shear strength profile. The paper concludes by proposing expressions that allow slightly conservative prediction of the combined capacity of a hybrid foundation. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：127 / 139

页数：13

共 23 条

[1] Undrained response of bucket foundations to moment loading [J].

Barari, A. ;

Ibsen, L. B. .

APPLIED OCEAN RESEARCH, 2012, 36 :12-21

[2] The undrained capacity of skirted strip foundations under combined loading [J].

Bransby, M. F. ;

Yun, G. -J. .

GEOTECHNIQUE, 2009, 59 (02) :115-125

[3]

Bransby M.F., 1999, SOILS FOUND, V39, P19, DOI DOI 10.3208/SANDF.39.419

[4] Standardized sign conventions and notation for generally loaded foundations [J].

Butterfield, R ;

Houlsby, GT ;

Gottardi, G .

GEOTECHNIQUE, 1997, 47 (05) :1051-1054

[5] Experimental investigations of the response of suction caissons to transient combined loading [J].

Byrne, BW ;

Houlsby, GT .

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 2004, 130 (03) :240-253

[6] A plasticity model describing caisson behaviour in clay [J].

Cassidy, M. J. ;

Randolph, M. F. ;

Byrne, B. W. .

APPLIED OCEAN RESEARCH, 2006, 28 (05) :345-358

[7] A comparison of the combined load behaviour of spudcan and caisson foundations on soft normally consolidated clay [J].

Cassidy, MJ ;

Byrne, BW ;

Randolph, MF .

GEOTECHNIQUE, 2004, 54 (02) :91-106

[8]

Elkhatib S., 2005, THESIS U W AUSTR

[9]

Gaudin C, 2011, P INT S OFF POL ENG

[10] Effect of embedment on the undrained capacity of shallow foundations under general loading [J].

Gourvenec, S. .

GEOTECHNIQUE, 2008, 58 (03) :177-185

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