振动沉管碎石桩、PHC桩联合处治软土地基的研究

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1、重庆交通大学硕士学位论文振动沉管碎石桩、PHC桩联合处治软土地基的研究姓名：陈兴培申请学位级别：硕士专业：建筑与土木工程指导教师：凌天清;柏松平20081110ABSTRACTTheHighwayisalargebandstructurewhichmaycrossmanykindsofterrainandgeomorphology,andthestratigraphywouldchangealways．Becauseofthis，alotfoundationshouldbetreated．Whenbuildingroadsinthesoftgroun

2、d，therewouldbesomeissuessuch嬲stabilityanddeformation．Forthehighways，wenotonlyrequirestabilityoftheembankment,butalsorequirethelittledeformationofthefoundationaftertheconstructionofthehighway．EspeciallytheSettlementofthefoundationshouldbeuniformaftertheconstructionofthehighway．T

3、hispaperreliesonLuoFuhighways15ofthecontractinFu—NingInterchange．Inordertosolvetheinterchangesoftsubgradeproblems，theprojectsfirstusedthejointmethods，whichusevibrationcrowdedgravelpileandHIPPHCPilestwotreatments．Infact，theprojectusedvibrationcrowdedgravelpileandHIPPHCPilestoimp

4、roveperformanceofthesoftground．ThispaperstudiedtheStrengtheningMechanism，Designmethod，constructiontechnology,settlementanalysisandeconomicindicatorsaboutthejointmethodofthetreatmentonthesoftfoundation．Firstly,throughanalysisofvarioustypesofsoftsoilstrengtheningoftheapproachanda

5、pplicationofresults，accordingtotheapplicabilityofvariouspilesinlightoftheactualworksoflocalgeologicalconditions，identifiedthejointtreatmentofsoftground，whichisusinggravelpilefoundationreinforcementtocontrolthesubgradesettlementandPHCpilesconstraintthelateraldeformation．Accordin

6、gtotheconstructionandengineeringgeologicalconditionstodeterminetheappropriateconstructionmethods，theuseofvibrationgravelpileimmersedtubemethod，usingPHCpilespressureernbedment．Secondly,inordertosolvetheproblemofsettlement，thepaperonthetheoryofcompositesettlementcalculationsandse

7、ttlementobservationanddataanalysisarediscussed，throughtheoreticalanalysisanddataanalysis，affirmedthedeepandlateralstrengthenboundtreatmentjointapplicationsoftfoundation．Finally，basedontheprincipleof“security，application,economic",thepaperanalysisqualitativeandquantitativeapplic

8、ationofvariouspilesontheprincipleofcostindicators，andp