加筋粗粒土變形和強(qiáng)度特性的研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文加筋粗粒土變形和強(qiáng)度特性的研究姓名：畢靜申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：水工結(jié)構(gòu)工程指導(dǎo)教師：鄒德高20090626加筋粗粒七變形和強(qiáng)度特性的研究StudyontheDeformationandStrengthBehaviorofCoarseGrainedSoilReinforcedwithGeogridAbstractneperviousreseachindicatedthatupperpartwasfailedfir

2、stlywhenearthrockfilldamwasdamagedunderstrongearhtquakeloadingItisnecessarytouseearthquakeresistantmeasurestohighearthrockfilldaminearthquakeregionSomedesignplansofearthrockfilldarninstrongearthquakearea(1ianghekoushuang

3、iiangkoueet)hasstartedtousethegeogridasameasureofslopereinforcementinrecentyearsHowever，thismethodlackofthetheoreticalguidanceanddesignparametersTheconnectionbetweenthecharacteristicsofgeogridandthemechanicalcharacterist

4、icsofcoarsegrmnedsoilreinforcedhasbeenreaearchedbytriaxialtestsinthispaperThestaticstrengthcharacteristics，modulusofresilience，dynamicmodulus，dynamicresidualdeformationalsobeenstudiedTheseresearchescanprovidesomesupportf

5、ortheearthquakeresistantmeasurestohighearth—roekfilldamTheelongationandstrengthcharacteristicsofthegeogridCanaffectthecharacteristicsofCOal∞grainedsoftreinforcedintriaxialtests，nleresultsshowthat：theelongmioncharacterist

6、icsofthegeogridhaveastrongimpactonpeakstrengthresidualstrengthandbrittlenessindexofthecoarsegrainedsoilreinforcedTheeftcaofthestrengthcharacteristicsofthegeogridisthesecondaryinfluencefactorofpeakstrengthandresidualstren

7、gth，butitCanaffectthebrittlenessindexofthecoarsegrainedsoilTriaxialexperimentalinvestigationoncoarsegrainedsoilreinforcedshowsthat：theinitialmodulusandresiliencemodulusofcoarsegrainedsoilreinforcedandunreinforcedarealmos

8、tsameHowever，thepeakstrengthandresidualstrengthhaveimprovedbrittlenessindexlowerAnewmethodofmodellingstrengthparametersisputforwardBoththenonlinearstrengthpropertiesofcoarsegrainedsoilandtheadditionalcohesionGeogridrolea

9、reconsideredTheexperimentsshow：theparameterofcohesiveCoCallincreasemorethan20kPaafterreinforcementFinally，thetriaxialteststoinvestigatethedynamiccharacteristicsofthecoarsegrainedsoilreinforcedarecarriedout111edynamicmodu