內(nèi)撐式排樁支護(hù)結(jié)構(gòu)的設(shè)計(jì)優(yōu)化研究.pdf

1、浙江大學(xué)建筑工程學(xué)院碩士學(xué)位論文內(nèi)撐式排樁支護(hù)結(jié)構(gòu)的設(shè)計(jì)優(yōu)化研究姓名：周愛其申請學(xué)位級別：碩士專業(yè)：巖土工程指導(dǎo)教師：龔曉南20081001浙江大學(xué)碩二b學(xué)位論文AbstractOptimumDesignStudyofRetainingPilesStructurewithInteriorBracingAbstractExcavationinfoundationpitsisatraditionaltopicswithwhichweofte

2、nmeetincivilengineeringItisacomplextechnicalengineeringwhichpossessesexperienceandriskWiththedeepgoingoftheresearchonbracedexcavationsandthephenomenasofprematureanceandconservativefrequentlyoccurredindesignpracticeofbrac

3、edexcavations，theoptimumdesignforretainingstructureshasbeenaproblemtonumerousspecializedtechnicalstaffFordiscussingtheinternalactionmechanismaboutthetopicmentionedabove，thethesishasfinishedthefollowingworksthroughcombini

4、ngtheresearchofretainingpilesstructurewithinteriorbracingbytheauthorsunitsince2004Firstlyithasreviewedandanalyzedtheoptimumdesigncourseofbracedexcavations，ithasalsosummarizedtheoptimumprincipleandways(gradations)ofbraced

5、excavationsTheresearchdirectionanddevelopmentofselectingobjectivefunction，establishingoptimummodelanddesignmethodetcaregeneralizedSecondlybasedonanalyzingthemechanicalcharactristicandoptimumdesignroomofretainingpilesstru

6、ctureswithinteriorbracing，thepaperhaschoosedthedesignvariableXandtheobjectivefunctionf(X)onthebasisofoptimumcriterioncalledfull—stressdesign，thenthemathematicsmodelofoptimumdesignforthelocation(joint)ofretainingpilesstru

7、ctureswithinteriorbracinghasbeenbuilt，avarietyofgainingmathodsandcalculatingformulasoftheallowableresistingcurvestressamandtheallowableretainingaxialpressurestress6carederived，thenthethreegainingmethodsabout6mandacarecom

8、paredanddiscussedeachotherMoreoverthecomplexstressstateofwalingonthelocations(joints)ofretainingpiles—interiorbracingandtheinfluenceofinternalforceanddeformation&displacementbythewalingabovearesimplyanalyzedanddiscussedF

9、inallythepaperaffordsallapplicationexampleoftheoptimumdesignfortheretainingstructureinsoftsoilareas，whichcouldconfirmtheaccuracyandeffectivityofthemethodofoptimumdesignThepaperfirstlyproposesthemathsmodelofoptimumdesignf

10、orthelocations(joints)ofretainingpiles—interiorbracinginretainingpilesstructureswithbracingTheconceptofCmand甌isofferedtOO，aswellasthenatureandphysicalmeansofOmandacisdesignatedTheoptimumdesignmodelmentionedaboveontheloca

11、tions(joints)ofretainingpiles—interiorbracingbelongstOpartialoptimumsolution，it’Smechanicalconceptisdistinct，itisalsosimpleandpracticalItcouldbeusedforreferenceinoptimumdesignofcomparableexcavationsKeywords：retainingpile