桶形基础承载力的三维弹塑性有限元分析
, PP. 1041-1047
Keywords: 软土,桶形基础,几何参数,弹塑性,承载力
Abstract:
?在经典的drucker-prager弹塑性本构模型基础上,通过将线性屈服准则改为抛物线型屈服准则来模拟静水压力对土体的屈服与破坏,并根据试验确定的硬化曲线建立了改进的d-p模型,使该本构模型能很好地模拟大港滩海软土的应力应变关系.利用marc.msc程序作为平台,建立了滩海桶形基础承载力有限元分析模型,对桶高、桶径及不同径高比的桶形基础承载力进行分析.结果表明,实际应用时应采用径高比大于1的桶形基础.
References
[1] | tjeltati.geotechnicalaspectsofbucketfoundationsreplacingpilesfortheeuropipe16/11ejacket[c]//proceedingsof26thoffshoretechnologyconference.houston,1994,otc7379:73-80.
|
[2] | byea,erbrichc,rognlienb,etal.geotechnicaldesignofbucketfoundations[c]//proceedingsof27thoffshoretechnologyconference.houston,1995,otc7793:869-883.
|
[3] | 施晓春,陈国祥.桶形基础单桶水平承载力的试验研究[j].岩土工程学报,1999,21(6):723-726.shixiaochun,chenguoxiang.experimentalstudyonhorizontalbearingcapacityofsinglebucketfoundation[j].chinesejournalofgeotechnicalengineering,1999,21(6):723-726(inchinese).
|
[4] | 刘振纹,袁中立.负压桶形基础地基水平承载力研究[j].岩土工程学报,2000,22(6):691-695.liuzhenwen,yuanzhongli.researchonthehorizontalbearingcapacityofbucketfoundations[j].chinesejournalofgeotechnicalengineering,2000,22(6):691-695(inchinese).
|
[5] | 鲁祖统,龚晓南.mohr-coulomb准则在岩土工程应用中的若干问题[j].浙江大学学报,2000,34(5):588-590.luzutong,gongxiaonan.problemsonmohr-coulombruleinthegeotechnicalengineering[j].journalofzhejianguniversity,2000,34(5):588-590(inchinese).
|
[6] | pastorm,zienkiewiczoc,chanahc.generalizedplasticityandthemodellingofsoilbehavior[j].intjnumericalandanalyticalmethodsingeomechanics,1990,14(3):151-190.
|
[7] | 张宏祥,张伟.滩海桶形基础承载力三维弹塑性有限元仿真[j].地震工程与工程振动,2006,26(4):127-131.zhanghongxiang,zhangwei.three-dimensionalelastoplasticfemsimulationofbearingforceofbucketfoundationinshallowwater[j].journalofearthquakeengineeringandengineeringvibration,2006,26(4):127-131(inchinese).
|
[8] | andrewjw,kavvadasmj.formulationofmit-e3constitutivemodelforoverconsolidatedclays[j].journalofgeotechnicalengineering,asce,1994,120(1):173-198.
|
[9] | 张伟.滩海桶形基础三维弹塑性数值分析与模型试验研究[d].天津:天津大学建筑工程学院,2002.zhangwei.three-dimensionalelasto-plasticnumericalanalysisandmodelteststudyofthebucketfoundationsinshallowsea[d].tianjin:schoolofcivilengineering,tianjinuniversity,2002(inchinese).
|
[10] | merifieldrs,lyaminav.three-dimensionallowerboundsolutionsforstabilityofplateanchorsinclay[j].journalofgeotechnicalandgeoenviromentalengineering,2003,129(3):243-253.
|
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