铁路隧道进口段结构与施工组织设计

湖南科技大学本科生毕业设计（论文）摘要随着我国主要铁路干线列车运行速度不断提高，高速铁路建设即将全面展开，高铁隧道的建设是其重要课题。沪昆客运铁专线作为国家《中长期铁路网规划》的干线铁路，成为上海省到云南省之间理程最长、标准最高、覆盖区县最多、投资规模最大的铁路项目。本设计依托沪昆客运铁路专线新庄隧道工程，首先对隧道的工程地质概况进行详细地分析，据此对隧道进行总体设计，并依据相关规范和有关文献资料对隧道进行初步拟定。隧道设计的主要内容首先为洞门的设计，洞门的设计包括洞门选型及受力验算；其次为初期支护设计，初期支护首先确定支护形式再分不同级别围岩分别进行抗力计算；再利用理正软件对隧道的二衬进行内力计算和验算以及配筋计算；最后为施工组织设计，包括隧道不同级别围岩的开挖方式和爆破方式的设计，以及超前支护、初期支护和二衬的施工组织设计；设计还对隧道的防排水以及通风和监控量测进行设计，以保证施工的安全级结构的长期稳定性。关键词：高铁隧道；洞门；初期支护；防排水湖南科技大学本科生毕业设计（论文）ABSTRACTWiththespeedofthemainrailwaylinesincreasinginourcountry,thehigh-speedrailwayconstructionisinfullswing.Theconstructionofthehigh-speedrailtunnelistheimportantsubject.Yunguihigh-speedironasmediumandlong-termrailwaynetworkplanningmainrailwaylineshasbecomethelongestmileage,thehigheststandards,districtsandcounties,coveringupthelargestinvestmentinrailwayprojects.ThedesignreliesonYunnanLiulangtunnelengineering.Firstly,thedesignanalysedbasedontheengineeringgeologyofthetunnelindetail.Accordingtotheoveralldesignofthetunnel,therelatedstandardsandtherelevantliterature,thetunnelwassettentatively.Thefirstofthemaindesigncontentsofthetunnelisportal’sdesign.Portaldesignincludescheckingandstressofportalselection;followedbytheinitialsupportdesign,initialsupportfirstdeterminethesupportformintodifferentsurroundingrockgradewerecalculatedresistance;reuseofsoftwareofthetunnellininginternalforcecalculationandtwocheckingandreinforcementcalculation;finallydesignforconstructionorganizationdesign,includingdifferentlevelsofsurroundingrocktunnelexcavationandblastingmethods,aswellasforepoling,initialsupportandtwoliningconstructionorganizationdesign;designofdrainagetunnelandventilationandmonitoringdesign,toensurethelong-termstabilityofthesafetylevelofconstruction.Keywords:high-speedrailwaytunnel;portal;initialsupport;drainage湖南科技大学本科生毕业设计（论文）i目录前言.............................................................................................................................-1-第一章隧道工程概况.................................................................................................-2-1.1工程简介................................................................................................................-2-1.2工程地质及工程条件评价....................................................................................-2-1.2.1地层岩性......................................................................................................-2-1.2.2地质构造......................................................................................................-3-1.2.3水文地质特征..............................................................................................-3-1.2.4隧道涌水量..................................................................................................-3-1.2.5隧道围岩分级..............................................................................................-3-1.3不良地质及特殊岩土问题....................................................................................-4-1.4地震烈度及气象资料............................................................................................-4-1.4.1地震烈度......................................................................................................-4-1.4.2气象资料......................................................................................................-4-1.5隧址场地工程适宜性评价....................................................................................-4-第二章隧道总体设计.................................................................................................-6-2.1一般规定................................................................................................................-6-2.2隧道的线形设计....................................................................................................-6-2.3主要技术标准........................................................................................................-6-2.4设计规范和要求....................................................................................................-6-2.5隧道建筑限界及衬砌内轮廓设计........................................................................-7-2.5.1隧道建筑限界的确定..................................................................................-7-2.5.2隧道衬砌内轮廓的设计..............................................................................-7-第三章洞门设计..........................................................................................................-9-3.1洞门概述................................................................................................................-9-3.2洞口地质条件........................................................................................................-9-3.3洞门的设计方案....................................................................................................-9-3.3.1洞门形式......................................................................................................-9-3.3.2洞门构造要求..............................................................................................-9-3.3.3洞门尺寸拟定............................................................................................-10-3