復(fù)合土釘支護技術(shù)在黃土地基深基坑工程中的應(yīng)用研究.pdf

1、分類號：TU31071020040413ⅢIIHlilI]EIIIIII]II]HHHRIIIilIIIY1527821壤鄉(xiāng)犬淳碩士學(xué)位論文復(fù)合土釘支護技術(shù)在黃土地基深基坑工程中的應(yīng)用研究常光明導(dǎo)師姓名職稱俞宗衛(wèi)教授申請學(xué)位級別工學(xué)碩士學(xué)科專業(yè)名稱結(jié)構(gòu)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(xué)位授予單位長安大學(xué)答辯委員會主席劉增榮教授學(xué)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