高速挡土墙工程探讨论文

I摘要铁路是国家重要基础设施，同时铁路建设水平也反映整个国民经济的发展水平。目前，随着我国经济实力不断增强，铁路建设取得了飞速发展。目前，国内从事电气化挡土墙工程施工的单位较多，其施工技术水平也参差不齐。本文结合我国电气化挡土墙的施工情况和自身工作实践，对我国高速电气化铁路挡土墙施工中存在的问题、施工控制点、施工中的关键性技术进行了初步地系统地研究，重点探讨了高速电气化铁路挡土墙的施工定测技术、基础施工与支柱安装技术、支持结构计算及装配技术、恒张力架线技术、整体吊弦施工技术、组合定位装置施工技术、刚性挡土墙施工技术、接触导线高度偏差控制，提出了许多符合高速挡土墙施工特点的新技术和新观点，为进一步研究高速挡土墙施工技术打下了一个良好的基础。关键词：土工编织；挡土墙；施工设计IIAbstractRailwayisthenationalimportantinfrastructure,railwayconstructionlevelalsoreflectsthedevelopmentlevelofthewholenationaleconomy.Atpresent,withChina'sgrowingeconomicpower,hasobtainedtherapiddevelopmentofrailwayconstruction.Atpresent,thedomesticunitsengagedinelectrificationprojectconstructionofretainingmore,itsconstructiontechnologylevelisuneven.ElectrificationconstructionofretainingwallinChinaanditsownworkingpractice,thehigh-speedelectrifiedrailwayretainingwallconstructioninourcountry,theconstructioncontrolpoints,theproblemsintheconstructionofthekeytechnologytosystematicallycarriedonthepreliminarystudy,probesintothehigh-speedelectrifiedrailwayconstructionmeasurementtechnology,foundationconstructionofretainingwallsandpillarsinstallationtechnology,supportstructurecalculationandassemblytechnology,constanttensionstringingtechnology,constructiontechnology,thecombinationofdropperspositioningdevicerigidretainingwallconstructiontechnology,constructiontechnology,deviationofcontactwireheightcontrol,putforwardalotofaccordwiththecharacteristicsoftheretainingwallconstruction,newtechnologyandnewideasforfurtherresearchonhighspeedretainingwallconstructiontechnologylaidagoodfoundation.Keywords:geotechnicalweaving;Retainingwall;Constructiondesign目录摘要..............................................................................................................................I第一章挡土墙的组成及要求.....................................................................................1第二章高速挡土墙的施工存在的问题.....................................................................3第三章高速电气化挡土墙施工技术及工艺.............................................................43.1基础施工.........................................................................................................43.1.1.基坑尺寸..............................................................................................43.1.3.基础浇制..............................................................................................53.2支柱腕臂的装配.............................................................................................53.2.1腕臂安装.............................................................................................53.2.2安装工艺.............................................................................................63.2.3软硬横跨的安装..................................................................................6第四章电气化铁道隧道内挡土墙悬挂方式研究.....................................................84.1水平悬挂方式的缺陷.....................................................................................84.2隧道内挡土墙悬挂方案研究.........................................................................94.3具体悬挂方案.................................................................................................94.3.1悬挂方案一.......................................................................................94.3.2悬挂方案二........................................................................................104.3.3悬挂方案三........................................................................................104.3.4悬挂方案四......................................................................................104.3.5悬挂方案五.......................................................................................114.3.6定位方案...........................................................................................11第五章高速挡土墙的施工技术现状研究...............................................................125.1挡土墙的施工现状.......................................................................................125.1.1支柱与基础........................................................................................125.1.2.腕臂安装............................................................................................125.1.3承力索和接触线架设........................................................................135.1.4新线初伸长的处理............................................................................135.1.5吊弦及定位装置的安装....................................................................135.1.6.静动态检测与验收交接....................................................................145.2国内高速挡土墙的施工现状.......................................................................145.2.1支柱基础的安装...............................................................................145.2.2腕臂和定位器安装...........................................................................145.2.3.承力索与接触线架设和超拉............................................................145.2.4.整体吊弦安装....................................................................................145.2.5.受电弓动静态施工检测....................................................................15结论.............................................