公路隧道前置式洞口工法的力学行为分析与施工工艺研究

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1、分类号TU4密级重庆交通大学Y856620单位代码10618学号03260112硕士学位论文论文题目：公路隧道前置式洞口工法的力学行为分析与施工工艺研究研究生姓名：李建军导师姓名、职称：蒋树屏研究员工学博士申请学位级别专业名称论文答辩日期学位授予单位答辩委员会主席评阅人2006年月日AbstractAlongwiththedevelopmentofthenationaleconomywithsocialadvanceduringfrequentlyhighwayandhighwaytunnelcons

2、truction．Theenvironmentalprotection，safetyandeconomicofhighwayconstructionisvaluedbymostconstructor．Higherrequestwiththeenvironmentalprotectionandhighwaylandscapeareputforward．Thetunnelentranceisthemostdifficultdistrictduringtunnelconstruction．The“Enter

3、earlyandpostponeout'’Techniqueprinciplewerealwayspromotedindesignandconstructionoftunnel．However，intraditionalmethodentranceconstructionisstarteduntilthereisundercertainconditionafterprotectioninslopingfieldoftunnelopeningingeneral．Atthistimethebigslopi

4、ngfieldhavebeenformatted．Greeningoftunnelopeningmethodandconnectsthecutmadcovertunnelisadoptedtomakeupforit．Howeverthebreakageoforiginalplantisnotresumable，itdonotrealrealize“earlyenterandpostponeout”．Aadvancedentranceconstructionmethodadoptstheprincipl

5、ethatnatureenter，certainentrancepositionandenteringprojectreasonably,arrangementconstructionprocessrightly，combinewithsomeassistanceconstructionmeasurestoenterearly．Itispossibletosolveavailablytheengineeringpotentialdangerofthetunnelentranceandprotectth

6、enaturalenvironmentandrealrealize“earlyenterandpostponeout”．Theadvancedentranceconstructionmethodthatpresentedbytheauthor’SteacherWasusedinLaoShanno．1tunnelwhichliesonthehighwayofNanJing—HuMan．Thiskindofmethodchangestheconstructionprocessthetraditionalm

7、ethodandreducedthealtitudeandtheamountofexeavation．Inthispaper,theconstructionprocessofadvancedhighwaytunnelentranceissimulatedandtheanalysisofstressanddisplacementinsurroundingrockandadvancedsupportstructureandcontrastanalysisCombiningwiththespotmeasur

8、ementresultiScarriedout．TheadvancedentranceconstructionmethodiSanewconstructionmemodoftheenvironnaentalprotectioninhighwaytunnelconstruction．Themethodminutelyworkispursuedduringconstruction．It’SapplicationCanmakeconstructionintun