CRTSI无砟轨道施工时常见缺失与注意事项.ppt

PrecautionsoncommondefectsofCRTS-INon-Ballastedtrackconstruction,成渝客运专线监理三标,CRTSI型双块式无砟轨道施工常见缺失与注意事项,1,Basicconceptmustkeepinmind必须常记在心的基本观念,Accuracy/Tolerancerequirement:mmevenmm施工精度与误差要求：毫米甚至毫米以下，失之毫厘差之千里3.Workingandinspectingindetails细化施工工艺与检查：多检查并及时整改才能少返工。魔鬼藏在细节里Standardizedconstructionprocedures标准化施工工序：谋定而后动，一次到位一步错全盘皆输,2,ProtectiononCPIIIBenchmarksCPIII网控制点的保护,NoprotectioncapappliedandMortarcluedontoboltthread预埋的CPIII螺栓孔未加防护盖,水泥砂浆粘附孔内螺纹,3,ProtectiononCPIIIBenchmarksCPIII网控制点的保护,NoclearancebetweenCPIIIpoleandbackfillinglayerCPIII控制点立柱与路基回填材料之间,未保持净空,4,ProtectiononCPIIIBenchmarksCPIII网控制点的保护,ScratchfoundontheCPIIIpoleCPIII控制点立柱表面存在碰撞痕迹,5,6,ProtectiononCPIIIBenchmarksCPIII网控制点的保护,OutforcingontheCPIIIpole施加外力在CPIII控制点立柱上,PreparationandtakeovertheDeckfurniture桥面系附属构件的准备与移交工作,7,8,PreparationandtakeovertheDeckfurniture桥面系附属构件的准备与移交工作,OCSfoundationwascastintwopieces接触网基础被分割为两次浇筑，非一体成型浇筑,9,PreparationandtakeovertheDeckfurniture桥面系附属构件的准备与移交工作,ExpansionjointseamsofprecastparapetwerenotmatchtotheinnerwallofCISparapet，thenthejointseamsbrokenduetolackoffreespaceforthegirderdeflection现浇A墙的伸缩缝与预制遮板的伸缩缝未对齐，因梁体挠度变化造成A墙与遮板无伸缩空间而积压破损,Multiconstructionpropertiesarrangement同一施工作业面多种作业项目与工序的安排,10,RoughnesstreatmentonBridgedeck桥面的凿毛工作,11,RoughnesstreatmentonBridgedeck桥面的凿毛工作,Roughnesstreatmentappliedonthewaterproofingarea设计上需要铺设防水层的位置也进行了凿毛,12,RoughnesstreatmentonBridgedeck桥面的凿毛工作,13,Toolrailandsteelframe轨排框架与工具轨,14,Toolrailandsteelframe轨排框架与工具轨,15,Expansionjointsealandsteelchannelinstallation伸缩缝耐候型钢与橡胶密封带的安装,16,Expansionjointandsteelchannelinstallation伸缩缝耐候型钢与橡胶密封带的安装,17,Expansionjointandsteelchannelinstallation伸缩缝耐候型钢与橡胶密封带的安装,18,Expansionjointandsteelchannelinstallation伸缩缝耐候型钢与橡胶密封带的安装,Incompletelyinsertedexpansionjointseal伸缩缝橡胶密封的嵌条，未完全嵌入耐候型钢的卡槽内,19,GeotextileinstallationofTrackslabconstruction无砟轨道轨道板施工-土工布隔离层安装,Lateremovedfixingnail串钉拔除时机太晚,20,RebarinstallationofTrackslabconstruction无砟轨道轨道板施工-钢筋安装,21,RebarinstallationofTrackslabconstruction无砟轨道轨道板施工-钢筋安装,Defectiveinsulation绝缘不良,22,RebarinstallationofTrackslabconstruction无砟轨道轨道板施工-钢筋安装,23,ConcretecuringofTrackslabconstruction无砟轨道轨道板施工-混凝土养护,Lackofcontinuemoistening未保持混凝土湿润的连续性,24,25,Suggestionofconstructionoptimization施工优化的建议-桥面板凿毛时的防尘,Installcoverandvacuumontheconcretescrubbertopreventdustpollution安装防护罩及吸尘机在凿毛机上，及时将凿毛时的尘土收集在吸尘机的集尘袋内，防止凿毛时的尘土飞扬,Suggestionofconstructionoptimization施工优化的建议-底座板施工,26,27,Suggestionofconstructionoptimization施工优化的建议-轨道板钢筋问题,Designedupperlayerandlowerlayerrebarwereinsamesizeandlength,thehooksjointtogetherbecamecomplicatedatcorner.Itcausingdifferentconcretecoveronsideandtherebarcagewillnotbequadratedshape.Especially4hooksfixedatcorners.设计钢筋笼上下层钢筋长度相同，因此在轨道板四周的立面弯钩都会出现互相干扰，特别是四个角落钢筋弯钩的绑扎变得极其复杂，造成同一根钢筋有不同的保护层的现象；且钢筋笼整体无法形成方正的主体,Suggestionofconstructionoptimization施工优化的建议-轨道板钢筋调整方案-1,28,Modifyalltherebartotwodifferentlengthsasupperlayerrebarlongerthanlowerlayer统一将钢筋笼上下层钢筋长度调整成上层筋较下层筋长，以上包下的形式形成箍,Planview平面效果模拟,Verticalview立面效果模拟,3Dview立体效果模拟,Longitudinalbar纵向钢筋,Horizontalbar横向钢筋,Suggestionofconstructionoptimization施工优化的建议-轨道板钢筋调整方案-2,29,Combinetheupperandlowerlayerhorizontalbartobeclosedstirrupifthereisnoproblemwiththeelectricityinsulationbetweeneachsingleoneofthemandagreedbydesigner.Itcouldsavehugecostonmaterialandinstallation请设计单位研究，在无单一组上下层钢筋绝缘必要性的前提下，将横向钢筋笼上下层改为由单一根钢筋弯折成的闭合箍，可省下许多成本,Fixtheoverlapjointbytwoinsulationclips闭合搭接处使用两个绝缘卡夹固定,Threehooksremainedatcornersfromfour轨道板各个角落的弯钩可因此由四个减少到三个,30,Suggestionofconstructionoptimization施工优化的建议-防水层基底-底座板根部,Makefootingcornerassmoothcurveprevent