监理三标外方监理专题报告SSR-027---无砟轨道施工时常见缺失与注意事项 幻灯片 2

1、1Basic concept must keep in mind必须常记在心的基本观念必须常记在心的基本观念 Accuracy / Tolerance requirement: mm evenmm施工精度与误差要求：毫米甚至毫米以下，施工精度与误差要求：毫米甚至毫米以下，失之毫厘差之千里失之毫厘差之千里3. Working and inspecting in details细化施工工艺与检查：多检查并及时整改才能少细化施工工艺与检查：多检查并及时整改才能少返工。返工。魔鬼藏在细节里魔鬼藏在细节里 Standardized construction procedures标准化施工工序：谋定而后动

2、，一次到位标准化施工工序：谋定而后动，一次到位一步错全盘皆输一步错全盘皆输2Protection on CPIII Bench marksCPIII 网控制点的保护网控制点的保护No protection cap applied and Mortar clued onto bolt thread预埋的预埋的CPIII 螺栓孔未加螺栓孔未加防护盖防护盖, ,水泥砂浆粘附孔水泥砂浆粘附孔内螺纹内螺纹3Protection on CPIII Bench marksCPIII 网控制点的保护网控制点的保护No clearance between CPIII pole and backfilling l

3、ayerCPIII 控制点立柱与路基回填控制点立柱与路基回填材料之间材料之间, ,未保持净空未保持净空4Protection on CPIII Bench marksCPIII 网控制点的保护网控制点的保护Scratch found on the CPIII poleCPIII 控制点立柱表面存控制点立柱表面存在碰撞痕迹在碰撞痕迹56Protection on CPIII Bench marksCPIII 网控制点的保护网控制点的保护Out forcing on the CPIII pole施加外力在施加外力在CPIII 控制控制点立柱上点立柱上Preparation and takeover

4、 the Deck furniture桥面系附属构件的准备与移交工作桥面系附属构件的准备与移交工作Uncleaned formwork plugs on the derailing wall footing防撞墙墙脚防止漏浆的木塞没有清除干净，墙防撞墙墙脚防止漏浆的木塞没有清除干净，墙脚呈现烂根情形脚呈现烂根情形Uncleaned various concrete leaked from the derailing wall footing防撞墙墙脚漏浆的废渣没有清除干净，墙脚呈防撞墙墙脚漏浆的废渣没有清除干净，墙脚呈现烂根情形现烂根情形78Preparation and takeover t

5、he Deck furniture桥面系附属构件的准备与移交工作桥面系附属构件的准备与移交工作OCS foundation was cast in two pieces接触网基础被分割为接触网基础被分割为两次浇筑，非一体成两次浇筑，非一体成型浇筑型浇筑9Preparation and takeover the Deck furniture桥面系附属构件的准备与移交工作桥面系附属构件的准备与移交工作Expansion joint seams of precast parapet were not match to the inner wall of CIS parapet，then the jo

6、int seams broken due to lack of free space for the girder deflection现浇现浇A A墙的伸缩缝与墙的伸缩缝与预制遮板的伸缩缝未预制遮板的伸缩缝未对齐，因梁体挠度变对齐，因梁体挠度变化造成化造成A A墙与遮板无墙与遮板无伸缩空间而积压破损伸缩空间而积压破损Multi construction properties arrangement同一同一施工作业面多种作业项目与工序的安排施工作业面多种作业项目与工序的安排Precast concrete fence installation also ongoing预制混凝土栅栏也在安装预制

7、混凝土栅栏也在安装Unfinished concrete foundation of Electricity pole接触网基础尚未完成接触网基础尚未完成Wooden sleepers installed for track way of Gantry Crane 龙门吊行走钢轨的枕木已安龙门吊行走钢轨的枕木已安装到位装到位Temporary electricity cable临时用电的电缆线不规范临时用电的电缆线不规范10Roughness treatment on Bridge deck桥面的凿毛工作桥面的凿毛工作Chipping the bridge deck by pneumatic

8、pick, chipping proportion less than specified 75%使用风镐凿毛，凿毛面积未达使用风镐凿毛，凿毛面积未达75%的规定的规定Chipping the bridge deck by concrete scrubber, but done in wrong methodology使用使用凿毛机凿毛机凿毛，但方法错误使得凿毛，但方法错误使得梁面形梁面形成犹如钻掘产生的孔洞成犹如钻掘产生的孔洞11Roughness treatment on Bridge deck桥面的凿毛工作桥面的凿毛工作Roughness treatment applied on the

9、 waterproofing area设计上需要铺设防水层设计上需要铺设防水层的位置也进行了凿毛的位置也进行了凿毛12Roughness treatment on Bridge deck桥面的凿毛工作桥面的凿毛工作Uncleaned waste hardened concrete after roughness treatment桥面上浇置桥面上浇置ABAB墙时遗留硬墙时遗留硬固的混凝土残渣未清理干固的混凝土残渣未清理干净，直接在残渣上凿毛净，直接在残渣上凿毛13Tool rail and steel frame轨排框架与工具轨轨排框架与工具轨No timber installed betwe

10、en tool rail and steel frame during stockpiling轨排框架采硬碰硬的直接堆轨排框架采硬碰硬的直接堆叠，未使用方木隔离叠，未使用方木隔离14Tool rail and steel frame轨排框架与工具轨轨排框架与工具轨Deformation and disfeatured tool rail工具轨损伤与变形工具轨损伤与变形15Expansion joint seal and steel channel installation伸缩缝耐候型钢与橡胶密封带的安装伸缩缝耐候型钢与橡胶密封带的安装16Exposure of the steel channe

11、l causing the gap distance different from concrete base layer伸缩缝耐候型钢突出，伸缩缝耐候型钢间隙与伸缩缝耐候型钢突出，伸缩缝耐候型钢间隙与底座板间隙不同底座板间隙不同Designed gap distance of the expansion joint and concrete base layer伸缩缝耐候型钢突出，伸缩缝耐候型钢间隙与伸缩缝耐候型钢突出，伸缩缝耐候型钢间隙与底座板间隙不同底座板间隙不同Expansion joint and steel channel installation伸缩缝耐候型钢与橡胶密封带的安装伸

12、缩缝耐候型钢与橡胶密封带的安装Pre-installed expansion joint seal collecting waste materials on it and difficult to clean预先安装的伸缩缝橡胶密封预先安装的伸缩缝橡胶密封带在施工过程中会有各种废带在施工过程中会有各种废渣堆集，日久后难以清理渣堆集，日久后难以清理Uneven cast concrete partition wall of the electricity channel intruding or away from expansion joint桥面电缆槽及桥面电缆槽及ABAB墙，部分安墙，部

13、分安坐在伸缩缝橡胶密封带上，坐在伸缩缝橡胶密封带上，部分未将耐候型钢嵌入部分未将耐候型钢嵌入17Expansion joint and steel channel installation伸缩缝耐候型钢与橡胶密封带的安装伸缩缝耐候型钢与橡胶密封带的安装Unbalanced tensile forcing on the expansion joint seal and causing deformation伸缩缝耐候型钢安装不对称，伸缩缝间隙未考伸缩缝耐候型钢安装不对称，伸缩缝间隙未考虑安装橡胶密封带时的环境温度与橡胶密封带虑安装橡胶密封带时的环境温度与橡胶密封带的尺寸匹配，橡胶密封带扭曲变形的

14、尺寸匹配，橡胶密封带扭曲变形Design requirement of the expansion seal installation设计要求的伸缩缝橡胶密封带安装规定设计要求的伸缩缝橡胶密封带安装规定18Expansion joint and steel channel installation伸缩缝耐候型钢与橡胶密封带的安装伸缩缝耐候型钢与橡胶密封带的安装Incompletely inserted expansion joint seal伸缩缝橡胶密封的嵌条，未伸缩缝橡胶密封的嵌条，未完全嵌入耐候型钢的卡槽内完全嵌入耐候型钢的卡槽内19Geotextile installation of

15、Track slab construction无砟轨道轨道板施工无砟轨道轨道板施工- -土工布隔离层安装土工布隔离层安装Late removed fixing nail串钉拔除时机太晚串钉拔除时机太晚20Rebar installation of Track slab construction无砟轨道轨道板施工无砟轨道轨道板施工- -钢筋安装钢筋安装Lack accurate of fabrication angle and sizes 裁切尺寸与加工弯折角度的精裁切尺寸与加工弯折角度的精度不良度不良21Rebar installation of Track slab construction

16、无砟轨道轨道板施工无砟轨道轨道板施工- -钢筋安装钢筋安装Defective insulation绝缘不良绝缘不良22Rebar installation of Track slab construction无砟轨道轨道板施工无砟轨道轨道板施工- -钢筋安装钢筋安装Lack of concrete cover混凝土保护层不足混凝土保护层不足23Concrete curing of Track slab construction无砟轨道轨道板施工无砟轨道轨道板施工- -混凝土养护混凝土养护Lack of continue moistening未保持混凝土湿润的连续性未保持混凝土湿润的连续性242

17、5Suggestion of construction optimization施工优化的建议施工优化的建议- -桥面板凿毛时的防尘桥面板凿毛时的防尘Install cover and vacuum on the concrete scrubber to prevent dust pollution安装防护罩及吸尘安装防护罩及吸尘机在凿毛机上，及机在凿毛机上，及时将凿毛时的尘土时将凿毛时的尘土收集在吸尘机的集收集在吸尘机的集尘袋内，防止凿毛尘袋内，防止凿毛时的尘土飞扬时的尘土飞扬Suggestion of construction optimization施工优化的建议施工优化的建议- -底座

18、板施工底座板施工Water stop wall挡水台Starter bar for Water stop wall挡水台预留筋Starter steel groove for Expansion joint seal伸缩缝橡胶带耐候型钢Install starter bar near expansion joint end of the concrete base layer to prevent crack occurred at the joint between the base concrete layer and water stop wall底座板施工时在梁端伸缩缝底座板施工时在梁

19、端伸缩缝处的左右两侧安装挡水台的处的左右两侧安装挡水台的接茬筋，避免未来因列车行接茬筋，避免未来因列车行走时的震动与温差，造成底走时的震动与温差，造成底座板与挡水台接缝处的开裂座板与挡水台接缝处的开裂2627Suggestion of construction optimization施工优化的建议施工优化的建议- -轨道板钢筋问题轨道板钢筋问题Designed upper layer and lower layer rebar were in same size and length, the hooks joint together became complicated at corner

20、. It causing different concrete cover on side and the rebar cage will not be quadrated shape. Especially 4 hooks fixed at corners.设计钢筋笼上下层钢筋长设计钢筋笼上下层钢筋长度相同，因此在轨道板四度相同，因此在轨道板四周的立面弯钩都会出现互周的立面弯钩都会出现互相干扰，特别是四个角落相干扰，特别是四个角落钢筋弯钩的绑扎变得极其钢筋弯钩的绑扎变得极其复杂，造成同一根钢筋有复杂，造成同一根钢筋有不同的保护层的现象；且不同的保护层的现象；且钢筋笼整体无法形成方正钢筋笼整体

21、无法形成方正的主体的主体Suggestion of construction optimization施工优化的建议施工优化的建议- -轨道板钢筋调整方案轨道板钢筋调整方案-1-128Modify all the rebar to two different lengths as upper layer rebar longer than lower layer 统一将钢筋笼上下层钢筋长度调统一将钢筋笼上下层钢筋长度调整成上层筋较下层筋长，以上包整成上层筋较下层筋长，以上包下的形式形成箍下的形式形成箍Plan view 平面效果模拟平面效果模拟Vertical view 立面效果模拟立面效果模

22、拟3D view 立体效果模拟立体效果模拟Longitudinal bar 纵向钢筋纵向钢筋Horizontal bar 横向钢筋横向钢筋Suggestion of construction optimization施工优化的建议施工优化的建议- -轨道板钢筋调整方案轨道板钢筋调整方案-2-229Combine the upper and lower layer horizontal bar to be closed stirrup if there is no problem with the electricity insulation between each single one of them and agree