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1、兰州交通大学本科毕业设计（论文）摘要随着近几年工程建设的快速发展，地基处理的方法也日趋多样化。CMS桩在铁路客运专线软基处理中的应用也越来越广泛，CMS桩便是水泥砂浆多向搅拌桩，属于刚性地基加固桩，它在水泥土搅拌桩的基础上做出了改进，将原有的固化剂里加入砂料，有效的提高了地基土的承载能力和抗剪强度。CMS桩网结构是在桩顶加设一定厚度的褥垫层，层内加铺一层或多层土工格栅。在复合地基受到荷载时，桩顶的土体受到水平方向褥垫层和土工格栅形成的“网”的加强，下部土体受到竖向增强体“桩”的加强，形成复合地基加固区，桩间土和桩在土工格栅的共同作用下共同承担上部荷载，三者之间协
2、同作用，这样CMS桩可以更好的发挥它的侧阻以及端阻作用。CMS桩具有沉降变形小、经济效益高、施工方便、加固效果明显等优点。本文介绍了CMS桩加固地基的适用范围、加固机理、施工工艺设备、质量控制检测以及安全环保措施，对CFG桩施工工艺做了简短介绍，为类似水文地质条件下的工程的施工工艺及技术标准提供了参考。关键词：CMS桩；加固机理；施工工艺；质量保证措施I兰州交通大学本科毕业设计（论文）AbstractWiththerapiddevelopmentofengineeringconstructioninrecentyears,themethodoffoundatio
3、ntreatmentisalsobecomingmoreandmorediversified.CMSpileinSoftfoundationtreatmentofRailwayPassengerDedicatedLineismorewidely,CMSCementpileismultidirectionalmixingpile,pilefoundationreinforcementarerigid,itisonthebasisofcementmixingpileonmakingimprovementsthatwilloriginalcuringagentwasa
4、ddedsandaggregate,effectivelyimprovethebearingcapacityandshearstrengthofthefoundationsoil.CMSpilenetworkistopofthepileplusCushionsetacertainthickness,overlayoneormorelayersofgeogridinnerlayer.whensubjectedtoloadcompositefoundation,pileofsoilissubjectedtohorizontalmattress"net"tostren
5、gthenthematandgeogridisformed,thelowersoilreinforcementbyvertical"pile"ofstrengtheningtheformationofcompositefoundationreinforcedarea,soilbetweenpilesandpilesinthejointactionofgeogridupperloadsharedsynergiesbetweenthethree,sothatCMScanbetterplayitspilesideresistanceandendhindrance.CM
6、Spilehastheadvantagesofsmallsettlementdeformation,higheconomicefficiency,convenientconstructionandobviousstrengtheningeffect.ThisarticledescribesthefoundationreinforcementofthescopeofCMSpile,reinforcementmechanism,constructionofprocessequipment,qualitycontroltesting,andsafetyandenvir
7、onmentalprotectionmeasures.ConstructiontechnologyCFGpilemakesabriefintroductionofsimilarconstructiontechnologyandtechnicalstandardshydrogeologicalconditionsoftheprojectprovideareference.KeyWords:CMSpile,reinforcementmechanism,constructiontechnology,Qualityassurancemeasures.1兰州交通大学本科毕
8、业设计（论文）目录摘要I
