涵洞施工技术交底样本【实用文档】doc文档可直接使用可编辑，欢迎下载涵洞施工技术交底样本框架涵施工技术交底单位名称:中铁四局二公司昌九第三项目队2021年03月9日工程名称里程桩号DK31+255设计文件图号施工部位基础技术交底内容:框架涵施工（1）基础施工对于有地基加固处理的涵洞，应先进行地基加固处理施工，而后进行基坑开挖.土质基坑一般采用挖掘机开挖，辅以人工清基。涵洞基坑开挖后，报请监理工程师以触探仪对基底承载力进行检测，检测合格后立即进行垫层砼施工，待垫层砼达到允许强度值后支立基础组合钢模，浇筑基础混凝土。基坑开挖时，做好截、排水设施(基坑外设挡水埂，坑内设环形排水沟、集水井，随时抽排坑中积水），防止基坑遭水浸泡、地基条件恶化.(2)框架箱身施工框架涵采用原位分节现浇。框架涵身分两次浇筑成型:第1次浇筑底板及下梗肋以上墙身，第2次浇筑侧墙及顶板。框架模板，内外模采用组合钢模板；框架内采用满堂钢管支架，并按规定设置剪刀撑和扫地杆等.为保证混凝土面美观，交通涵框架墙身采用无内拉杆模板施工(内模利用满堂支架向两侧顶紧,外模采用双联槽钢竖向加固)。钢筋在棚内集中弯制,运至现场绑扎成型.混凝土由邻近拌和站集中供应,搅拌车运输，泵送或吊机提吊浇筑。浇筑底板前，对基础顶面进行凿毛并冲洗干净。为加强两次浇筑的连接和保证框架整体防水性能，水平施工缝做成“凹”字形，即在第1次浇筑时将厚度为边墙厚度1/3的方木埋入混凝土中，待混凝土终凝后取出，且在方木取出前将施工缝凿毛、冲洗干净。attentiontoimprovingthequalityandefficiencyofdevelopmentandpaymoreattentiontosecurityandreformthepeople’slivelihood,morefocusonmaintainingsocialharmonyandstability，andpromotethedevelopmentoftownshipeconomyinabetterandfaster,createanewnormalXXdevelopmentandlayamoresolidfoundationforXXbuildawell—offsociety。Completedtasksthisyear,wemustalwayspayspecialattentiontotheprimarytaskofdevelopment.XXweakeconomicbase,lowlevelsofdevelopment,economicconstructionistheCenter,wehavetocreateconditionsforfastereconomicdevelopment,accumulatingmorewealth,betterpeople'slives.Effortshouldbemadetothisyear’seconomicgrowth,revenuegrowth,peoplehavemaintainedahighrateofincomegrowth，GDPgrowthofmorethan15percentrespectively.Alwaysgraspthefundamentalimpetusforreform。Wearenow"nosoldiersbehind"manyindicatorsrankedinthebottomofthecountyfromgettingbigger.Onlybygoingallouttohardwork,hardwork，innovation,reformdoesnotadapttoinstitutionalmechanisms,practices，itispossibletochangethefaceofXXpoor，intoawell-offsocietytogetherwithpeopleacrossthecountry.Wewanttobreaktheoldpatternsofthinking,methodsandorganizationofwork，bravelyandboldlyinto，makingfulluseofalltheadvantages，comprehensivereforms，tomakeallitsvitalityfordevelopmentimpulse，letfullplaytoallsourcesofwealthcreation。Shouldalwaysstability底板混凝土达到设计强度的50%后，方可搭设支架、立模、绑扎钢筋、浇筑边墙及顶板混凝土。混凝土分层浇筑,层厚以30cm为宜。混凝土浇筑时，两