Numerical modelling of the effects of consolidation on the undrained spudcan capacity under combined loading in silty clay

被引：19
|
作者：
Ragni, Raffaele [1 ,2 ]
Bienen, Britta [1 ,2 ]
Wang, Dong [3 ]
Masin, David [4 ]
Cassidy, Mark J. [1 ,2 ]
机构：
[1] Univ Western Australia, Ctr Offshore Fdn Syst, 35 Stirling Hwy, Perth, WA 6009, Australia
[2] Univ Western Australia, ARC CoE Geotech Sci & Engn, 35 Stirling Hwy, Perth, WA 6009, Australia
[3] Ocean Univ China, Shandong Prov Key Lab Marine Environm & Geol Engn, 238 Songling St, Qingdao 266100, Peoples R China
[4] Charles Univ Prague, Fac Sci, Prague 12843, Czech Republic
来源：
COMPUTERS AND GEOTECHNICS | 2017年 / 86卷
基金：
澳大利亚研究理事会;
关键词：
Spudcan; Consolidation; Combined capacity; VHM; Numerical modelling; Hypoplasticity; SOFT CLAY; JACK-UP; SHALLOW FOUNDATIONS; BEARING CAPACITY; BEHAVIOR; FOOTINGS; SAND; PENETRATION; INSTALLATION;
D O I：
10.1016/j.compgeo.2016.12.019
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The paper shows the increase in vertical and combined horizontal and moment bearing capacity of jack-up spudcan installed in silty clay, when a load-hold period is accounted for. The numerical implementation of a hypoplastic model for structured clays, combined with large deformation coupled analyses allowed the modelling of the spudcan installation process. Results were mapped into three-dimensional small strain analyses, conducted to investigate the combined loading capacity and describe the yield surface. The underlying failure mechanisms were investigated and increases in capacity due to consolidation determined. Experimental centrifuge data on carbonate silty clay validated the qualitative trend revealed numerically. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：33 / 51
页数：19
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