矩形地下連續(xù)墻槽壁失穩(wěn)機(jī)理及其分析方法研究.pdf

1、河海大學(xué)碩士學(xué)位論文矩形地下連續(xù)墻槽壁失穩(wěn)機(jī)理及其分析方法研究姓名：王軒申請學(xué)位級別：碩士專業(yè)：巖土工程指導(dǎo)教師：雷國輝20050301AbstractTheslurrytrenchexcavationtechniquehasbeenwidelyusedinFoundationEngineeringforalongtime，butthetrenchstabilityalwaysisnotbeingresolvedwellBeingsho

2、rtoftmderstandingthefactorsinfluencingtheexcavationsstabilityandinstabilitymechanism，failureofexcavationsoccurredoccasionallyThispal：IerbasedontheresultofforlTlercentfifogemodeltestandfailureexampleinvestigatesthekeyfact

3、orsinfluencingthestabilityexpoundstheinstabilitymechanismform10calandglobalstabilityandclassifiesthemethodswhichusedfrequentlyondifierentdefinitionofsafetyfaetorandSBbjectinvestigatedThispaperusingLet’ssolutionforcalcula

4、tinghorizontalstresschartgesanddisplacementsaroundanexcavateddiaphragmwallpanel，putsforwardsemi—ellipsoidalslidingwedgetoanalyzetheglobalstabilitywhichcoverstheshortofdeterminingtheformofslidingwedgeintheoryBasedonthelim

5、itequilibriumanalysisofthesemi—ellipsoidalslidingwedge，ananalysismethodisproposedforappraisingtheglobalstabilityofthepaneltrenchesAftercompliedwithMatlab，themethodcarlanalyzetheinfluencefactorsbehaviorsuchaswaterlevelslu

6、rryleveitrenchlength，distanceextendbehindthepanel，lengthspreadfromthepanel，soilunitweight，soileffectivefrictionangle，soileriectivecohesivestrength，depthoftensioncrackzone，activeearthpressure，overloadandSOon，whichCallobta

7、inneededslurryunitweJ【ghtundergivingtheneededsafetyfactorThoughthecalculationfactorssensitivityandpracticalapplication，themethodcangiverightlawofinfluencefactorsandcanappraisethestabilityoftrenchreasonablyTherearealotofm

8、ethodstOdecidethestabilityoftrenchInordertomakingdifferentmethodspracticalapplicationclearlytiffspapercarriesthrorlghcomparativelystudyamongthemformdifferenttheoryfoundation，calculationfactorssensitivityandpracticalappli

9、cationeriect‰ughthecalculationfactorssensitivityofformer9methods，UnitetheConclusionOfthisPapermethodCaleulationfactorssensitivitythe1awofinfluencefactorsandproblemshavebeenfoundthereasonoftheproblemshasbeenexpoundaswellT

10、hou曲tcomparewithtwo—dimensionlimitingequilibriumcondition，theformerresultofFEM，centrifugemodelandfield，thesemi—ellipsoidal，semicircleandtriangularprismslidingwedgecallappraisethestabilityoftrenchreasonablyThisPaDermethod

11、obtainsabetterneededslurryunitwetghtnlronghthestudydifferentparameterofthispapermethoditiscanfindthatthispapermethodCangetabettereffectinpracticalapplicationasthe1engthspreadfromthepaneliSdoubleofthedistanceextendbehindt