预应力锚索失效因素的试验和数值研究

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1、重庆大学硕士学位论文预应力锚索失效因素的试验和数值研究姓名：李剑申请学位级别：硕士专业：岩土工程指导教师：张永兴20070420英文摘要ABSTRACTCable,oneldndofreinforcementmP。asBre。iswellaeceptedinrockandsoilengineeringpractice．Butanchorageworksasahighlyconcealedproject,itsoperationperiodofthesafetyevaluationoftestingtech

2、nologyhasnotyetbeeneffectivelysolved．Duringtheconstruction,theanchorslopeinstabilityincidentshaveoccurred．Onceanchoringslopedestroyed，theeconomiclOSSgSisheavily，theenvironmentandecolcIgicalbalancealsodamaged．Statisticsofprestressedcablefailuremodesandfail

3、urefactorson丘eldinvestigationanddatacollection．Experimentalresearchandnumericalsimula矗onotlsomemajorfailurefacmrsofprestressedcable．Theprincipleachievementsinthedissertationis嬲follows：Firstly,experimentalresarchonthestrand，cementgroutandrockforthebasicphy

4、sicalandmechanicalproperties．Themechanicalparametersofmaterialareusedinnumericalsimulationandexperimentaianalysis．Secondly,bypulltestdataoftheconventionalcable，somefailureeffectfactorofconventionalcable，suchasthecementgroutmixtureratio，anchoragelengthandr

5、ocktypewerestudied．Pulltestresultsshowthemajorfailedmodeforconventioncableboltandthemajoreffectfactoronbearingcapacityforcablebolt．Thirdly,introductionandimprovethebulbcableusedinbridgestructure．Thebulbcableanchoringmechanismwerestudiedbypulltestdata．nere

6、sultsshowedthecomparisionbetweenconventionalcableboItandbulbcableboIt．11坞effectfactorsonbearingcapacitywerestudiedbypulltest，themajorfailedmodeandeffectfactoroanbegetfromtheresult．．Fourthly,anon—linearfiniteelementanalysismethodofpulltestisproposedbyuseAN

7、SYS，andtheresultsshowedbothstressdistributionofconventionalcableandbulbcable．11leeffectfactorsonbearingcapacityforcablewerestudiedbypulltest，andtheanalysisfornumerialsimulationWasconsistencewithpulltestresulLKeywords：Anchorageslope,Conventionalcable，Bulbc

8、able,Failedmode，Capacity,NumericalsimulationIH独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作及取得的研究成果。据我所知，除了文中特别加以标注和致谢的地方外，论文中不包含其他人已经发表或撰写过的研究成果，也不包含为获得重麽太堂或其他教育机构的学位或证书而使用过的材料。与我一同工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示谢意。学位论文作者躲名钏签