王健;吴涵;陈彬;陈石川;夏圣峰;李衍川;

• 1:国网福建省电力有限公司电力科学研究院
• 2:国网强台风环境抗风减灾实验室(培育)
• 3:国网福建省电力有限公司
• 4:国网福州供电公司

摘要(Abstract)：

利用弹塑性有限元分析可满足快抢快建的装配式方形基础作用下不同黏土类型地基的极限承载力.通过预位移方法研究基础的极限承载力及其破坏模式,提出载承力计算图和V-H面的承载力包络图,讨论尺寸效应.研究表明:基础尺寸对地基极限承载力影响显著,而对无量纲承载力以及归一化承载力包络面影响甚微;地基承载力也随着土体的模量增加而增加,其中硬塑黏土的无量纲承载力和归一化承载力包络面的曲线倾斜角略大于其它土体地基.

关键词(KeyWords)： 黏土地基;极限承载力;承载力包络面;尺寸效应

Abstract:

Keywords:

基金项目(Foundation): 国家电网有限公司科技项目(13KJ5401A093120170000);; 福建省政府引导性项目(2017Y0063)

作者(Authors): 王健;吴涵;陈彬;陈石川;夏圣峰;李衍川;

参考文献(References)：

• [1]杨征宇,杨剑,王天慧,等.输电塔基础斜桩非线性p-y曲线[J].河海大学学报(自然科学版),2010,38(1):104-108.
• [2] PRANDTL L. Eindringungsfestigkeit und festigkeit von schneiden[J]. Angewese Mathematiken Mechanik,1923,1(1):15-20.
• [3] MEYERHOF G G. The bearing capacity of foundations under eccentric and inclined loads[C]∥Proceedings of the 3rdInternational Conference on Soil Mechanics and Foundation Engineering. Zürich,Switzerland:Dunod,1953:246-257.
• [4] YUN G J,BRANSBY M F. The undrained capacity of skirted strip foundations under combined loading[J].Géotechnique,2009,59(2):115-25.
• [5] LYAMIN A V,SALGADO R,SLOAN S W,et al. Two-and three-dimensional bearing capacity of footings in sand[J].Géotechnique,2007,54(5):297-306.
• [6] HOULSBY G T,MARTIN C M. Combined loading of spudcan foundations on clay:laboratory tests. Geotechnique[J].2000,50(4):325-38.
• [7] MARTIN C M,HOULSBY G T. Combined loading of spudcan foundations on clay:numerical modelling[J]. Geotech-nique,2001,51(8):687-700.
• [8] MARTIN C M. Physical and numerical modelling of offshore foundations under combined loads[D]. Oxford:University ofOxford,1994.
• [9] TAN F S C. Centrifuge and theoretical modelling of conical footings on sand[D]. Cambridge:University of Cambridge,1990.
• [10] GOURVENEC S,Randolph M. Effect of strength non-homogeneity on the shape of failure envelopes for combined loadingof strip and circular foundations on clay[J]. Géotechnique,2003,53(6):575-586.
• [11] SHEN Z,BIE S,GUO L. Undrained capacity of a surface circular foundation under fully three-dimensional loading[J].Computers&Geotechnics,2017,92(1):57-67.
• [12] BRANSBY M F,RANDOLPH M F. Shallow foundations subject to combined loadings[J]. Géotechnique,1998,48(5):637–655.
• [13]钱家欢.土工原理与计算[M].北京:中国水利水电出版社,1996.
• [14] GOURVENEC S,RANDOLPH M F,WALLERAND R,et al. Design approach for rectangular mudmats under fully three-dimensional loading[J]. Géotechnique,2014,64(1):51-63.