水泥土擠密樁在高速鐵路路基中的應(yīng)用.pdf

1、合肥工業(yè)大學(xué)碩士學(xué)位論文水泥土擠密樁在高速鐵路路基中的應(yīng)用姓名：馬飛申請學(xué)位級別：碩士專業(yè)：巖土工程指導(dǎo)教師：王國體20071101AnApplicationofTheSoil—CenmentPileinTheRoadbedofRailwayAbstractAlthoughcompositefoundationhaswidelyusedinengineeringduringrecentyears，theresearchonthemech

2、anicalbehaviorhaslaggedbehindtheengineeringapplications。Inthefirstchapter，themainresearchstudiesareaboutthesituationsofthesoilcementpileinthecountry。Inthesecondchapter，byallexampleofapplication，themainresearchstudiesaret

3、hefunctionandtheconstructiontechniques。Inthelast，itemphasizethatthecharacteristicofthesoilcementpileandtheproblemofitaInthethirdchapterfirstly，inthesoilcementpile，thesoilcementplaysanimportantroleinstrengthentheverticals

4、ubstance。Itsintensitydeterminedthebearingcapacityofthecompositefoundation，soitisnecessarytostudythephysicscharacterofthesoilcement，alsothesizeoftheenergyhasadetermineinfluenceonthesoilcementpile，Accordingtotheunconfinedc

5、ompressiontestsonthecementandthesandsoilcementwithdifferentcementratioanddifferentcuringtime，andstudyingonrulesoftheunconfinedcompressionandmodulusandsummarizingofthecharacteristicofstressstraindiagramofsoilcement，thisdi

6、ssertationanalyzestheinfluenceofcementratioandcuringtimeandcharacteristicofsoilonunconfinedcompressivestrength，andstudythemechanicbehaviorsofsandsoilcementontheconditionofsoakingordrynessThetestsprovidesomedatatotheappli

7、cationofthesetwokindsofsoilcementThebasictheoryandsomecomputationsofFEMforcompositefoundationarediscussedinthefourchapterTheelementtypesofsoilandpile，modelsofsoilandpileandcalculationstepsinFEMarefocusedonSomenotesaremen

8、tionedwhennonlinearcharacteristicsareappliedInthefourchapter，theestablishmentof3DFEMmodels，theselectionofelementsandmeshingagediscussedFurtheranalysisonthenumericalresultispresented，andthensomecontrastsaremadewiththetest

9、dataTheconclusionisdrawnthattheselectionofmodelandparametersarereasonableThecontrastsalsosupplyabaseforfurtheranalysisAndthestressanddisplacementofthecompositegrouppiles，two—layerfoundationarecomputedrespectivelywhenvary

10、ingmodulusinthelastIt’sconcludedthatthemethodbasedontwo—layerfoundationdoesnotfittocomputingthedisplacementofcompositefoundation，anditcausestoinsecurityifappliedtoengineeringByanexampleofapplicationofthesoilcementpileinc