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时间:2019-02-05
《针对非饱和土力学研究现状与进展》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第33卷第1期兰州交通大学学报Vol.33No.12014年2月JournalofLanzhouJiaotongUniversityFeb.2014文章编号:1001-4373(2014)01-0138-11DOI:10.3969/j.issn.1001-4373.2014.01.029非饱和土力学研究现状与进展*丑亚玲1,陈星强1,毛建勋2(1.兰州理工大学土木工程学院,甘肃兰州730050;2.核工业280研究所,四川广汉618300)摘要:鉴于非饱和土力学在路基工程、边坡工程及基坑工程等诸多实际工程中有着广泛的应用前景,国内外众多学者历时几十年,对处于非饱和状态的黄土、
2、黏土、膨胀土和人工填土,着重从土-水特征曲线、强度特性、本构模型、渗流特性和吸力测量等方面展开了深入的研究.基于非饱和土力学的研究现状,对土-水特征曲线的滞回现象、拟合方法;强度特性的理论成果和试验方法;本构模型的研究现状;渗流特性的试验研究和影响因素、吸力测试方法及工程应用等多方面进行了系统地综述,并分析其各自研究成果的优缺点,便于有效地指导实践.今后关于非饱和土力学的发展,不仅着眼于上述前五个方面扎实的理论研究,更加注重与实践相结合,实现快速、精准的试验方法或技术迫在眉睫.关键词:非饱和土;土-水特征曲线;本构模型;强度特性;渗透特性;吸力测量;工程应用中图分类号:TU4
3、3文献标志码:AUnsaturatedSoilMechanicsResearchStatusandProgress1,CHENXing-qiang1,MAOJian-xun2CHOUYa-ling(1.SchoolofCivilEngineering,LanzhouUniversityofTechnology,Lanzhou730050,China;2.The280InstituteofNuclearIndustry,Guanghan618300,China)Abstract:Consideringthebroadapplicationprospectofunsaturate
4、dsoilmechanicsinmanyengi-neeringfield,suchassubgradeengineering,slopeengineeringandexcavationengineering,manyresearchers,bothathomeandabroad,havemadeanintensivestudyofunsaturatedloess,clay,ex-pansivesoilandartificialfillsfordecades,especiallyforthecharacteristicofsoil-watercurve,strength,co
5、nstitutivemodel,permeabilityandthemeasurementofsuction,respectively.Basedonthecurrentresearchesofunsaturatedsoilmechanics,thisarticlemakesasystematicreviewforunsaturatedsoilonvariousaspects,includingthehysteresisphenomenonandfittingmethodsofthesoil-watercharacteristiccurve,thetheoreticalach
6、ievementsandtestmethodsofthestrengthcharacteristics,thecurrentresearchesoftheconstitutivemodel,theexperimentalstudyandtheinfluencefactorsofseepagecharacteristics,thesuctiontestmethod,theengineeringapplication,andsoon.Andanalyzestheadvantagesanddisadvantagesofeachstudies,whichareconvenientto
7、guidethepracticeeffectively.Theresultsshowthatthefurtherstudyofunsaturatedsoilmechan-ics,shouldnotonlymakemorein-depthresearchesintheabovefiveaspects,butalsoextremelyurgenttopayattentiontotheconnectionwiththeprojectsandfindouttheeffectiveandaccuratetestm
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