混凝土挡土墙施工作业指导书.doc

'混凝土挡土墙施工作业指导书本工程挡土墙从1段西面至1段北、2段北、3段北、3段东、2段右东、5段北、5段东几大块。节点大样共3种，详见变更。根据变更中图1、图2、图3的节点结合图中所注明进行施工。1、基槽挖土方：本工程挖基槽土方从1段西南角开始采用挖掘挖机及人工配合进行开挖。开挖深度详见附图1，放坡系数取1：0.75。挖基配合墙体施工分段进行，先测量放线，定出开挖中线及边线，起点及终点，设立桩标，注明高程及开挖深度，用反铲挖掘机开挖，多余的土方装车运至2段南挡土墙南侧以及游泳池南侧进行土方回填。第一次开挖先挖至垫层底，查看土质情况后方可继续开挖。在施工过程中，应根据实际需要设置排水沟及集水抗进行施工排水，保证工作面干燥以及基底不被水浸。 主体北侧开挖后，路面仅剩3m行走空间。silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, 2、地基处理：根据设计要求和实验确定现场实际配合比。砂石换填的施工方法,分层铺填厚度取200～300mm，采用振动碾和振动压(夯)实机，严禁扰动垫层下卧层的较软弱土层,silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, 防止其被践踏或受浸泡。接触下卧软土层的垫层底层应根据施工机械设备及下卧土质条件的要求具有足够的厚度。底部宜设置500mm厚以上的砂石垫层,并不得采用振动碾压,以防止软弱土层表面的液化。垫层底面宜设置在同一标高上,如深度不同,基坑底土面应挖成阶梯或斜坡搭接,并按先深后浅的顺序进行垫层施工,搭接处夯压密实。2、垫层施工：基底铺10公分C15砼垫层。4、钢筋安装：现浇钢筋基础先安装基础钢筋，预理墙身竖向钢筋，待基础浇筑砼完后且砼达到2.5Mpa后，进行墙身钢筋安装。 钢筋绑扎时一定要注意变形缝的预留。5、现浇砼基础：按挡土墙分段长以变形缝为界，整段进行一次性浇筑，在清理好的垫层表面测量放线，立模浇筑。整个施工顺序从1段西南角开始浇筑，使用37m汽车泵。在浇筑节点大样2挡土墙基础时，在挡土墙外侧按照间距1200预埋钢管。6、现浇墙身砼：现浇钢筋砼挡土墙与基础的结合面，应按施工缝处理，即先进行凿毛，将松散部分的砼及浮浆凿除，并用水清洗干净，然后架立墙身模板，砼开始浇筑时，先在结合面上刷一层水泥浆或垫一层2—3公分厚的1：2水泥砂浆再浇筑墙身砼。 7、模板安装：墙身模板采用光面七夹板拼装，竖枋用8×10cm枋间距为40cm，用钢管作围楞，用8×10cm的木枋作斜撑进行支撑，侧模用ф12的止水螺栓对拉定位，螺栓间距为50cm，拆模时，将螺栓割除，再用1:2防水砂浆封堵螺栓眼，墙身模板采用一次立模的办法。砼浇筑从低处开始分层均匀进行，分层厚度一般为30cmsilkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, ，采用插入式振捣器振捣，振捣棒移动距离不应超过其作用半径的1.5倍，并与侧模保持5—10cm的距离，切勿漏振或过振。在砼浇筑过程中，如表面泌水过多，应及时将水排走或采取逐层减水措施，以免产生松顶，浇筑到顶面后，应及时抹面，定浆后再二次抹面，使表面平整。 砼浇筑过程中应派出木工、钢筋工、电工及试验工在现场值班，发现问题及时处理。 砼强度件制作应在现场拌和地点或浇筑地点随机制取，每工作班应制作不少于2组试件（每组3块）。 砼浇筑完进行收浆后，应及时洒水养护，养护时间最少不得小于7天，在常温下一般24小时即可拆除墙身侧模板，拆模时，必须特别小心，切莫损坏墙面。 在浇筑完基础1后，浇筑-6.65m～至顶，模板加固如上图所示。在浇筑2后，拆模以后立即进行土方回填。7、伸缝缩、沉降缝及泄水孔的处理 　　现浇钢筋砼挡土墙的伸缩缝和沉降缝宽2cm（施工时从墙顶到基底沿墙的内、外、顶三侧缝内夹2公分厚的泡沫板或木板）。 silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, 变形缝按照17m预留。　　挡土墙泄水孔为ф10cm的硬质空心管，间距3m梅花形布置，泄水孔进口周围铺设50×50×50cm碎古，碎古外包土工布，下排泄水孔进口的底部铺设30cm厚的粘土层并历夯实。8、施工组织计划在1段斜屋面浇筑后，从1段西南角进行土方开挖。开挖至垫层深度看土质情况决定是否继续开挖。在砂石换填后，进行基础的施工，基础施工完后，进行墙体的施工，墙体施工完后立即进行土方的回填。因北侧道路在开挖以后，汽车泵以及罐车无法在基坑坡上行走，故采用开挖一段，施工一段，成活一段。在施工至2段北侧时，在两个变形缝之间预留出一跨，以便空调等设备在年底进场安装。在施工2段以及3段，要配合管井一起施工。开挖时在管井的位置。silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition, silkdeficiencybuckleduetosetssilkShipullteethintoknifevolumetoobig,andpullteethofteethedgednotsharp,andteethedgedhasdamaged,andcutXiaofironslagaccumulated,reasonsdueto,toguaranteethreadquality,setssilktimesusedautomaticallysetssilkmachine,setssilkprocessingtimesfor1~4timesranging,DN15~DN32sets2times,DN40~DN50sets3times,DN70abovesets4times,Screenwhenyouarefinishedusingthestandardgaugestested.Drainagepipeslopeisnotuniform,tape,wireandothertoolstocheckthatpipeslopesmeetacceptancerequirement.2valveinstallationinstallationwithoutstrengthandtightnesstestwiththebrands,models,withthespecificationsofannexsamplingvalve10%andnotlessthan1,strengthandtightnesstest,mainshutoffvalveonthepipeshouldbeindividuallyforstrengthandtightnesstest.FlangeinstallationShiflangeendssurfaceparalleldegreesenough,tightsolidmethodnotmeetrequirementstwomethodblueendsurfaceeachotherparallel,itsdeviationnotisgreaterthanmethodblueODof1.5‰;twisttightboltShitosymmetriccrossfor3healthapparatusinstallationandwareconnectionoftodrainroadinterfaceseepagecheckseepageparts,againreplacedandwareconnectionofwateraccessoriesordrainagetied;checkseepageparts,againreplaceddamagedpipelineannex.Healthapparatusinstalledlooseorhorizontal,verticaldeviation.Wareinstalledposition,'