真空-堆載聯(lián)合預壓作用下地基側向變形機理與計算分析.pdf

1、河海大學碩士學位論文真空堆載聯(lián)合預壓作用下地基側向變形機理與計算分析姓名：趙慧英申請學位級別：碩士專業(yè)：巖土工程指導教師：劉漢龍彭劼20080301AbsUaaAbstractVacuumcombinedsurchargepreloadingisaquietgoodmethodteinforcesoRfoundationyetinevitablyengenderslateraldeformationwhichnotonlybadlyaf

2、fectsthereinforcedresultsbutalSOdodamagetOtheenvironmentSOsomenecessarydefendedmeasuresshouldbetakemBasedOHformerresearchcombinedwithglentyofthepositionexperimentsandinformationaccordingtOcombinedtheoreticanalysiswithnum

3、ericalcomputationthemechanismanalyticexpressionandaffectedfactorsoflateraldeformationundervacBimlcombinedsurchargepreloadingareresearched11他foilowingaspectsarestudied：(1)AccordingtomechanismofeffectiveSUeSSseparatelyunde

4、rvacuumpreloadingmadsurchargepreloadingmechanismoflateraldeformationundervacumcombinedsurchargepreloadingareanalyzedandextrudeddeformationiSdeducedretractiledeformationundersurchargepreloading，underVagUmcombinedsurcharge

5、preloadingbothextrudedandretractiledeformation(2)Basedontheanalyticexpressionofthesurfaceofthewedgeshapedsufferingtheequalloadandporepressureinboundary，theanalyticexpressionofthelateraldisplacementundervacuumcombincdsurc

6、hargepreloadingiSdeduced，andseparatelynegativeporepresst玳iSdiffusedunderVaCURInpreloading，verticalequalloadundersurchargepreloMingAccordingtothemechanismundercombinedpreloadingcombiningmacroscopicaldeformationandstress，t

7、heexpressionofthequantityvalueofvacunmpressure，theshapeoffoundation，theheightofsurcharge，theeharactedsticofsolIlayerwithlateraldeformationiSfounded，whichisprovedtobefeasiblebyseveralfieldtests(3)ByusingtheFEAsoftwareABAQ

8、UStosimulatetheprocessofloadingandunloadingundervacuumcombinedsurchargepreloading，bychangingoBemainfactoronthebaseofotherfactorsunchangedsomemainfactorsarestudieddetailedlyTheorderofthefactorsaffectingthelateralisranked：

9、(Dtheheightofsurcharge；②mcdepthofsoftlayer；③mepilestakenOUtofthereinforceddistinctandSO011(4)BasedOnthefieldtestofWuHartIndustrialPortaccordingtoMohrCoulombmodel，theprocessofconsolidationundercombinedpreloadingissimulate

10、dandcomputedbytheFEAsoftwareABAQUSthencomparing州ththecomputedvaluefromtheexpressionsofthesecondchapterandtheobservedfromthefieldtesLInWuHanIndustrialPortthepilesaretakentoprotecttheCulvertfromtheinfluenceoflateraldisplac

11、ementtwhichtheresultofbomthecomputationandfieldtestproveareveryeffectiveinconlxollingthevalueandtrendoflateraldeformationKeywords：vacuumcombinedsurcharge；lateraldisplacement：analyticexpression；mechanism；influencingfactor