PHC管樁的土塞作用對承載力影響的研究.pdf

1、上海大學碩士學位論文PHC管樁的土塞作用對承載力影響的研究姓名：杜來斌申請學位級別：碩士專業(yè)：結構工程指導教師：李永和20060201上海大學碩士學位論文AbstractPresentlyinthefieldofPHCpinepileapplying，designandconstructionexperiencesofpre—castconcretepilesaregenerallyusedtoanalyzethepile—sinkin

2、gbehaviorandthebeatingcapacityofthepileAsaresult，aseriesofqualityproblems，suchasconservativedesign，selectingincorrectpiles，pilefoundation’sexcursion，rising，incline，breaking，lengthwayscrazing，cuttingpiles，addingpiles，ands

3、oon，appearinsomeofpilefoundationsAddingriskofinvestmentandtimecontrolofpilefoundationengineeringandleadingeconomicproblemsofengineeringcounterclaimInthispaperfirstly，theauthorconcludesandanalysesaboveproblemsaboutPHCpile

4、s，andthenpointsoutitsmultifortuitycomplexityandcompositionSecondlymainlystudiesthespecialplugeffectofpilesinkinganditsprocessAtlastconcludesthatthecliffatthetopofpilewillposewedgewhichisverydangeroustoplugeffect，Thensets

5、upthecalculationformula，putsforwardthecorefailuremodeandthewholeglidemodeofplugAtthesametime，theauthorcorrectsthedefinitionofplug’srecoveryrateafterconsideringfactorsofpileshoethicknessSmnmarizemisgivingsoftheconclusiont

6、hatpilediameterisinversetoblockeffect，andestablishesreasonablerelationbetweenthemThepaperalsothinksthatchangingsectionshapesoradjustingsizeofpileshoediameterandpilediametercanreduceorincreaseplug’sblockeffectAndthatmakes

7、useofandcontrolsplugeffecteffectivelySubsequentlyaccordingtononlinearmodelofstressandstrain，studiesthepile’ssoilsqueezingandbringsforwardseveralmethodstoenhancebearingcapacityofapileofPHCPointsoutdifferentsoilshavedivers

8、ecriticalvalueofpilediameterwhichcanmakepilehavethelargestbearingcapacityofapileFinallythepaperanalysesqualityproblemsofaprojectinvested700millionRMB，sumsupsomeresolventofthethirdandtheforthdisabledPHCpile，speciallysomeo

9、fresolventconsultadviceofexpertsInthispapertheauthormakesamountbasalstudyworkonPHCpile，basedontheplugtheorygivebetterspaceformoreresearchonPHCpiledeeplyandsystematicallyKeywords：PHCpipepile；plugeffect；blockeffect；wedgeef