元墩滑坡微型桩加固系统动力特性研究

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1、密级公开分类号ＴＵ３５＿方知＾京ＸＦＡＮＴＥＣＨＮＯＬＯＧＩＣＡＬＵＮＩＶＥＲＳＩＴＹ硕士学位论文题目：元墩滑坡微型粧加固系统动力特性研究＇作者：赵明明指导教师：何教授申请学位学科：岩土工程２０１８年５月１１日密级公开分类号TU35XI’ANTECHNOLOGICALUNIVERSITY硕士学位论文题目:元墩滑坡微型桩加固系统动力特性研究作者：赵明明指导教师：何晖教授申请学位学科：岩土工程2018年5月11日桩轴力和桩剪力的变化曲线并分别作了分析，并通过桩顶XYZ向位移、桩身弯矩、桩轴力和桩剪力的变化曲线的变化规

2、律联合微型桩施工提出自己对微型桩抗震设计的意见。通过本文对不同模型分组建模研究，明确了此滑坡微型桩加固系统模型在动荷载作用下的受力和变形特征，相比静力作用下微型桩加固系统的受力和形变有了进一步研究，可为微型桩加固系统抗震优化提供依据，有一定的工程应用价值，也为后期研究地震作用下，相同连梁条件改变微型桩桩间距和排间距的加固系统的受力和变形提供研究思路。关键词：滑坡；连梁；微型桩加固系统；地震荷载；桩顶位移；桩身内力dynamicloadconditions.Pastolderbrothershavedemonstratedthatthelandslideforceandpilebo

3、dydisplacementunderstaticloading,theconclusionprovesthatthereisnotmucherrorfromthemeasureddata,sothemonitoringdataafterpowerloadinginthispaperhasresearchsignificance.Basedonthetheoryofdynamicanalysis,thepaperanalyzestheengineeringgeologicalconditionsoflandslides,summarizesthefactorsthatcausel

4、andslideinstabilityaccordingtotheactualconditions,andthencalculatesthestabilityoflandslidesandthethrustoflandslidesusingtheslicingmethod,andintroducesthedesignprocessofmicropiles.Andverifiedthatthesafetyfactorofthislandslideexampleaftermicropilereinforcementisinlinewiththespecification.Basedo

5、ntheaboveresearchandpreviousscholars'verificationofthislandslidemodel,thispaperusestheFLAC3Dfinitedifferencesoftwaretocalculateandanalyzethelandslidemodel.Becausethesoftwarepre-processingfunctionisweak,inordertobettersimulatetheengineeringexample,thispaperestablishesandfinitedifferenceinthela

6、ndslidegeometrymodel.Inthemeshingstage,AutoCADisusedtoimportANSYS.Afterthemeshingiscompleted,thedockingprogramisimportedintoFLAC3Dandthemicropileunitisaddedforloadcalculation.Thisistoclearlycomparetheforcesofdifferentmicropilesreinforcementsystemscomposedofconnectingbeamsindifferentdirections

7、.Deformation:Inthispaper,thesimulationexperimentisdividedintomicro-pilestructuresconnectedbyhorizontalandverticalconnectingbeamsandmicro-pilestructuresconnectedbytransverseconnectingbeamsonly.Afteraddingthepileunitandapplyingdynamicload,512We