復合土釘支護技術在黃土地基深基坑工程中的應用研究.pdf

1、分類號：TU31071020040413ⅢIIHlilI]EIIIIII]II]HHHRIIIilIIIY1527821壤鄉(xiāng)犬淳碩士學位論文復合土釘支護技術在黃土地基深基坑工程中的應用研究常光明導師姓名職稱俞宗衛(wèi)教授申請學位級別工學碩士學科專業(yè)名稱結構工程論文提交日期2007年5月22日論文答辯日期2007年6月1日學位授予單位長安大學答辯委員會主席劉增榮教授學位論文評閱人劉增榮教授李潘武副教授AbstractSoilnailingis

2、alleconomic，reliableandnewretainingtechnologywiththesenotableadvantages，ithasachievedrapiddevelopmentandapplicationinourcountryTocompensatetheshortcomingsofsoilnailingthatunabletodecreasethedeformationproperly，itiscombin

3、edwithsoilnailingandprestressedboltorMixingpilinginexcavations，calledcompositesoilnailing“Boltscompositesoilnailing’’hasmoreprominentadvantagesamongthemandhasbeenusedalotinpractice，suchastheexcavationintheloessareaButthe

4、studyonitsworkmechanismanddesignmethodisnotenoughfortheengineeringapplicationBasedonthepastresearches，thispaperbyusingthefiniteelementmethod(FEM)carryonthecomputationanalysistotheloessexcavationwith‘boltscompositesoilnai

5、ling’Theauthorsimplifiedretainingstructuretobeplanestrainproblems，ftuthermoresimulatedtheconstructionprocessofexcavationandtheinteractionbetweenthesoilnailing，anchoringthesoilinterfacebyusingliveanddeathunit，contactunitp

6、rovidedbyANSYS，calculatedthesafetyfactorofdifferentsupportandprotectionplanswithFEMstrengthreductionBychangingthelocationandthelengthofsoilnailsprestressedvalue，andotherdesignparametersofthedeformation，safetyfactors，carr

7、iesontheanalysisalongwiththeparametervariablesensitivity，obtaineddesignvalueprincipleofthemaindesignvariableforsoilnailingstructureintheloessexcavationReplacedasoilnailwithaboltinsoilnailingstructure，hasstudiedthevariabl

8、eruleofthedeformationandsafetyfactorsbychangingthelocationofbolts，prestressedvalue，boltlengthThenhasanalyzedthemechanismandobtainedsomesuggestionsonthedesignandconstructionof‘boltscompositesoilnailing’’structureintheloes

9、sareaAtlast，Byapplyingthesuggestionsonthedesignandconstructionof‘boltscompositesoilnailing”structureinanactualproject，thefiniteelementanalysisresultandtherecordsindicatedthatthesuggestionsarecorrectandeffectiveKeywords：L