干湿循环对石灰处治膨胀土动力特性影响试验分析

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1、万方数据causedsoilrepeatedexpansionandcontraction，leadingtothedevelopmentoffissuresinthesoil，reducethedegreeofconnectionbetweensoilparticles，SOthatthetreatmentofsoilstructuraldamageanddamagedegreevarywiththenumberofwetting-dryingcyclesincreaseandincrease．3．Consolidatedundrainedtri

2、axialtestontreatedspecimenswhichsubjectedto0～5timeswetting—dryingcycleswerecarriedout，theresultsshowthat：theeffectofwettingdryingcyclesonthetreatmentofsoilmacroperformanceforshearstrengthofcontinuousattenuation，forthefirsttime，afterthesecondwetting-dryingcyclescohesionattenuat

3、ionrangeisbigger,afterthe恤rdcycleattenuationamplitudedecreasedandstabilized，andfrictionangleonlyafterthefirstwetting-dryingcycleshavelargerattenuation，theoverallchangerangeisquitesmall．4．Throughdynamictriaxialtests，obtainthetreatmentofsoildynamicdeformationcharacteristicsunder

4、the0-5timesofwetting-dryingcycleseffect，includingthebackbonecurve(Cr--6dcurve)，dynamicelasticmodulusanddynamicstrainrelationshipcurve(局～自curve，lied～国curve)，dampingratioanddynamicstraincurve(儿国curve)．Consolidationpressure，consolidationratio，dynamicloadfrequencyfactorsunderwetti

5、ng-dryingcycleseffectofsoiltreatmentofbackbonecurve，dynamicelasticmodulusanddampingratioarestudied．Moreover,thebackbonecurveconstitutiverelationmodel，dynamicmodulusofelasticityattenuationmodelundertheinfluenceofthedifferentfactors．Accordingtheequivalentdampingratioformulatocal

6、culatetotalstrainrangeofdampingratiowhichisproposedbytheequivalentlinearmodel(Hardin-Dmevichmodel)，meanwhiledeterminethemaximumdampingratio以掀accordingtothetestresults．Furthermore，accordingtothehyperbolicdynamicstressdynamicstrainproposedbyHardin-Dmevichmodel，fittingthecalculat

7、edmaximumdynamicmodulus‰．IV万方数据KEYWORDS：Lime-treatedExpansiveSoil；PhysicalandMechanicalProperties；Wetting-dryingcycles；StaticTriaxialTest；Dyn砌cTriaxialTests；Dyll疵cElasticModulus；Dampingratio．V万方数据目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯I』jI。】B!；TRACT⋯．⋯⋯．⋯．．⋯．⋯⋯．．⋯⋯．⋯⋯．⋯．⋯．．⋯．⋯

8、．⋯⋯．⋯⋯．⋯⋯．⋯．⋯⋯⋯．⋯．．⋯．⋯．⋯．⋯⋯．⋯⋯III第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯