盾构始发井主体结构防水施工技术交底 8页

技术交底记录ZT11CGJL13单位：中铁十一局集团有限公司莞惠城际GZH-3标项目经理部编号：主送单位盾构始发井主体结构防水施工队第1页共8页工程名称盾构始发井主体结构防水工程日期：2011.6.18一、说明：盾构始发井为地下两层箱型框架结构，采用明挖顺作法施工。本工程地下结构防水等级为一级，要求不允许漏水，结构表面无湿渍。采用防水钢筋混凝土和全包柔性防水层组成双道防水防线。本工程结构外包防水层采用自粘性高聚物改性沥青防水卷材。侧墙水平施工缝采用钢板橡胶（丁基橡胶）腻子止水条，环向、竖向施工缝也采用钢板橡胶（丁基橡胶）腻子止水条；外设同种材料的防水卷材加强层，宽度500mm。另外，在底板和顶板的阴阳角处均须外设防水卷材加强层，宽度500mm。二、材料及施工设备准备：1、主要材料：（1）自粘性高聚物改性沥青防水卷材：宽1m，长10m，厚度4mm。（2）钢板橡胶（丁基橡胶）腻子止水条：200×5mm。（3）缓膨型止水胶：15×8mm。（4）镀锌止水钢板。（5）BSR-242沥青基卷材密封膏。2、主要施工设备：主要施工机具配备表序号机具名称型号规格单位数量用途1喷灯/套2烘烤2裁切刀/把5卷材裁切3抹子/个5基层找平4压辊/根5卷材压实dslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnotexactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonarainyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacewaterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofspecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructionofabovegroundandundergroundobstacleclearanceintheregionanddealt\n三、防水施工方法：本工程底板、侧墙、顶板均采用高聚合物改性沥青聚酯胎双面自粘防水卷材，厚度4mm，采用聚乙烯膜(PE)防粘隔离层，辅以混凝土垫层、找平层、保护层等。1、基层准备1）、基层必须抹光、坚实、牢固，无空鼓、松动、起砂、麻面等缺陷，施工完成以后经施工队自检合格后报项目部质检工程师自检，项目部经自检合格以后再上报监理工程师最终检查。2）、基层表面应平整光滑、均匀一致，其平整度用2米直尺检查，最大空隙不大于5mm，且每米不多于1处。3）、基层若高低不平或凹坑较大时，应用1：3水泥砂浆进行找平处理。4）、平立面交接处的阴阳角均应做成均匀一致、平整光滑的圆角，圆弧半径不小于50mm。5）、突出基层表面的尖锐硬物、砂浆疙瘩等铲除，不能铲除时应采用水泥砂浆抹面覆盖处理，抹面圆弧半径应大于300mm。并将尘土杂物清除干净，阴阳角、管根部等处更应仔细清理，若有不同污渍、铁锈等，应以砂纸、钢丝刷、溶剂等产以清除干净。2、底板防水层施工（自粘卷材空铺法）1）、施工工艺流程：清理基面--施作穿墙管件等防水加强措施——空铺卷材——相邻卷材搭接——接口密封——施工缝等节点加强处理——质量验收2）、施工方法：a.清理基面：基层应平整、坚实、无明水，基层突起物应清除干净，局部凹陷应用水泥砂浆填补。b.空铺卷材，卷材与混凝土垫层基面采用空铺法施工。空铺卷材，卷材长、短边搭接宽度均为100mm，相邻卷材之间搭接，搭接宽度100mm，采用配套的双面自粘性胶条封缝，搭接缝应压实粘牢，且用BSR-242沥青基卷材密封膏对收头部位进行密封处理。将整卷卷材置于铺贴起始端，对准基层上已弹好的粉线滚展卷材约1mdslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnotexactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonarainyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacewaterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofspecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructionofabovegroundandundergroundobstacleclearanceintheregionanddealt\n，调整好卷材的铺贴方向。有自粘胶的一面朝上，即空铺法施工。搭接缝处必须采用手持小压辊，密实重叠排压，以保证接缝的密闭防水功能。搭接缝处应采用喷灯或液化气等进行辅助加热粘接处理。防水卷材的平面连接如下图：c.节点处在大面卷材铺贴完毕后，按要求对节点进行加强处理。d．所有阴角部分均采用5×5cm的1:3水泥砂浆进行倒角处理，阳角部位均应凿除2×2cm的钝角并用1:2.5水泥砂浆找平。如下图：阴、阳角倒角处理示意图dslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnotexactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonarainyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacewaterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofspecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructionofabovegroundandundergroundobstacleclearanceintheregionanddealt\n3、侧墙防水层施工（自粘卷材反粘法）：1）、施工工艺流程：清理基面－－预铺卷材——长、短边粘贴搭接——节点加强处理——质量验收2）、施工方法：a.清理基面：围护结构内侧施作20mm厚找平层作为卷材铺贴的基层，其平整度用2m靠尺进行检查，直尺与基层的间隙不超过5mm，且只允许平缓变化。基层应坚实、无明水。b.固定预铺粘结点：用射钉加钢垫片将100mm×100mm自粘卷材片按500mm间距将卷材固定于基层上，粘结面朝外。c.点粘预铺卷材：将固定于基层上的自粘卷材片的隔离膜揭除，然后把自粘卷材粘结于自粘卷材片上，粘结点用小压辊压实。d.长、短边粘贴搭接：用喷灯烘烤卷材的长、短搭接边，再用小压辊压实，使用喷灯时工作环境必须保证通风。e.节点处在大面卷材铺贴完毕后，按规范要求对节点进行加强处理。4、顶板防水层施工（自粘卷材湿铺法）1）、施工工艺流程：施工工艺流程：清理基面——抹水泥砂浆——节点加强处理--揭掉大面自粘防水卷材隔离膜——铺贴自粘防水卷材——晾放——连接口密封——质量验收2）、施工方法：a.清理基面：清除混凝土基面的灰尘、杂物，干燥基面应预先洒水湿润。b.一般情况下配比：抹活性、可分散性专用水泥胶浆，水泥胶浆：水泥：胶=8：1.2：0.8。水泥砂浆厚度一般为0.5mm～1.0mm，配胶料时也可加入适量聚合物。具体配比需根据材料供应商提供并经检测后方可使用。c.揭掉自粘防水卷材下表面的防粘隔离膜，先在施工缝、诱导缝等部位加强处理，然后将铺设大面卷材。卷材与相邻卷材之间为上下搭接。d.拍打：用木抹子或者橡胶板拍打卷材上表面，提浆，排出卷材下表面的空气，使卷材与胶结浆料紧密粘结。e.晾放：晾放24小时至48dslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnotexactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonarainyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacewaterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofspecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructionofabovegroundandundergroundobstacleclearanceintheregionanddealt\n小时（具体时间视环境温度而定），一般情况下温度越高所需时间越短。f.搭接口密封：用配套的双面自粘性胶条封缝，封缝宽度80mm，若搭接部位被污染，需要先清理干净。主体结构防水图A图B图5、施工缝处理1）、盾构始发井环向、竖向施工缝及侧墙水平施工缝，均采用宽度为200mm，厚5mm的钢板橡胶（丁基橡胶）腻子止水条进行防水处理。如下图所示：dslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnotexactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonarainyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacewaterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofspecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructionofabovegroundandundergroundobstacleclearanceintheregionanddealt\n侧墙施工缝防水构造图dslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnotexactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonarainyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacewaterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofspecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructionofabovegroundandundergroundobstacleclearanceintheregionanddealt\n2）、板面预留洞口后浇带处采用缓膨型止水胶，如下图所示：板面后浇带施工缝构造图6、格构柱处理格构柱防水主要采用在格构柱角钢上焊接两道镀锌止水钢板，并在两道钢板之间的角钢上缠绕两道缓膨型止水胶，如下图所示：格构柱防水处理图四、安全文明施工1、安全管理原则：安全第一，预防为主，遵守法规，持续改进。2、严格执行国家及东莞市有关安全的法规、管理条例、办法，严格遵守业主方有关安全生产的各项规章制度、服从安全管理。3、强化安全法制观念，施工前进行安全教育和培训，严格执行安全技术交底工作，坚持特殊工程持证上岗制度。4、在施工过程中，必须遵守“先防护，后施工”的规定，施工人员必须佩戴安全帽、穿工作服、软底鞋，严禁在没有任何设防的情况下违章作业。dslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnotexactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonarainyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacewaterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofspecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructionofabovegroundandundergroundobstacleclearanceintheregionanddealt\n5、施工现场一切用电设施须安装漏电保护装置，施工用电动工具正确按操作标准使用。6、每个施工作业面由施工队长为安全负责人，对施工人员进行安全教育和管理，做到严格执行安全施工中的各项规章制度，施工安全员随时检查安全防护用品的使用情况，违章者停工教育，并视情况给予经济处罚。编制：复核：签收：年月日注：①对重点工程、关键部位及质量要求的特殊工程除口头交底外，还要以书面形式进行技术交底。②“技术交底书”一式两份，一份作为施工依据，一份留存备查，并办理交接手续。dslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnotexactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonarainyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacewaterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofspecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructionofabovegroundandundergroundobstacleclearanceintheregionanddealt