水-力耦合作用下膨胀土-桩接触面力学特性分析-(5958)

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1、dry-wetcirculation,theypresentatrendofdecreaseatfirstandthenincreases,buttheruleofshearstrengthparametershasobviousdifference.(3)Usingregressionanalysis,thethesishasrespectivelyestablishedthesoilmoisturecontentanddry-wetcyclesandpilesoilcontactsurfaceandthesh

2、earstrengthandshearmodulusrelation;andthethesishascomprehensivelyanalyzedunderthemoistureabsorptionpathanddry-wetcirculationconditions,theinfluenceofthecharacteristicsofexpansivesoilsoiloninterfaceshearstrengthofexpansivesoil-pile,andgettheequationofpile-soil

3、intensityparametercharacterizationofinterfaceshearstrengthequationKeyword:expansivesoil，absorptionpath，dry-wetcirculation，microscopicporestructure，pileandsoilcontactsurfaceIII万方数据目录摘要.....................................................IAbstract..............

4、...................................II第一章绪论.............................................11.1研究背景及意义..............................................11.2国内外研究现状.............................................................................................31.2.1膨胀土工程

5、性状的研究现状...............................31.2.2桩-土接触面力学特性研究现状............................61.3研究内容和技术路线..........................................81.3.1主要研究内容...........................................81.3.2拟采取的技术路线.......................................9第二章水-力耦合作

6、用下膨胀土的宏微观特性................112.1引言.......................................................112.2膨胀土的基本物理力学特性...................................122.2.1膨胀土的基本物理性质..................................122.2.2膨胀土的击实特性......................................132.3膨胀土的胀缩特性.

7、..........................................132.4膨胀土的微观结构特性.......................................162.4.1备样方法..............................................162.4.2试验方案..............................................172.4.3脱湿路径下土体微观结构特性............................1

8、82.4.4吸湿路径下土体微观结构特性............................212.4.5干湿循环条件下土体微观结构特性........................232.4.6基于MIP试验测定的土体孔隙比..........................242.5小结.......................................