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1、雁山隧道二衬主筋冷挤压套筒机械连接技术交底工程名称南龙铁路NLZQ-7标里程DK218+910～DK219+010设计图号施工部位雁山隧道交底日期编号技术交底内容：隧道二衬主筋冷挤压套筒机械连接工艺原理、施工工艺、质量控制1.适用范围本交底适用于雁山隧道钢筋混凝土衬砌中的环向主筋连接。2.作业准备2.1开工前组织技术人员对钢筋冷挤压套筒机械连接施工工艺及质量标准进行学习，掌握钢筋冷挤压套筒连接质量检查及验收标准。对参与钢筋机械连接的施工人员进行岗前培训，考核合格后方可上岗。2.2施工所用的机械及人员满足施工需要。
2、3.工艺原理钢筋套筒挤压连接方法是将需要连接的钢筋（带肋钢筋）端部插入特制钢套筒内，用超高压液压设备（挤压钳）挤压钢套筒，使套筒产生塑性变形与钢筋横肋紧密啮合，靠变形后的钢套筒与带肋钢筋的机械咬合紧固力将两根钢筋牢固的连接。(2)drawapurgesystem,confirmedbythesupervisingprincipal;(3)thepurgingoftemporarypipeinstallation,requiredsupportandreinforcement,purgeoutletsettinga
3、fixedbracket,easytocheck;(4)atthepurgingoutletcordon,bythepersonresponsibleforsupervision;(5)setupaspecialpanelofsteampipeblowingwillbeattendedbyaunifiedcommand,assigningtheirtasks;(6)steamblowingthestepsareasfollows:a.openthetrap,ventanddrainvalve;B.shouldwa
4、rm-upbeforepurging;C.checktheexpansionjoints,thermaldisplacementofthespringhangerandpipe;D.usedtopurgethevaportemperatureshouldnotexceedthetubingoperatingtemperature;E.purgesteamshouldbeheated→cool→reheatingintheorder;F.purgelinesshouldbeablowoutafterblowingt
5、henext;G.purgepurgingofthetargetofexportplacepolishingthequalityofchecks,norust,debrisonthetargetsforqualifying.(7)thewashing,sweeping,thequalified(confirmedbytheCommissionerandowners)afterthepipeline,shouldrecover,recoveryprocedureswiththedismantlingstepsins
6、tead,andblanksareremoved,shouldbeputontheofficialgasket,oncetherecoveryiscomplete,confirmedbythesupervisionofsite,filloutthepurge,rinserecords.2.staticequipmentinstallationprogramme2.1installationprogramsetupforstaticequipmentforstaticequipment,seebelow.2.2th
7、econstructionpreparation2.2.1allpersonnelshouldbefamiliarwithequipmentinstallationandtechnicalinformation,includingequipmentmanufactureandAssemblydiagramsandcomponentdiagrams,equipmentinstallationdocumentation,specialtools,manuals,packinglistandprocessinstall
8、ations,equipmentcertification,theconstructionaaBy-pass,washdownstreampartsofthepipeline.(5)takeexitoftheflushinglinewithglassesofwater,checkwhetherthewatercolorand134.材料与设备要求4.1、材料4.1.1、钢
