省道502安阳至内黄一级公路改建项目质量风险管理办法中国五冶编制人：审核人：审批人：中国五冶集团有限公司省道502安阳至内黄一级公路改建工程项目经理部二0一七年三月目录1编制原则................................................12质量风险管理机构及职责..................................12.1质量管理小组.......................................12.2项目部的管理职责...................................22.3项目部各部门职责...................................22.4各参建单位职责.....................................23主要质量风险源的分析....................................44主要质量风险源监控要点..................................44.1路基填方...........................................44.1.1清表深度不够..................................44.1.2路基基底压实度不够............................54.1.3黄土含水量过高................................54.1.4粉砂质土较厚..................................54.1.5软基处理不规范................................54.1.6新老路基结合处处理不规范......................64.1.7蓄滞洪区路基水毁..............................64.1.8蓄滞洪区低填路基处理不好......................64.1.9纵、横向填挖交界处处理不好....................64.1.10台背、涵背回填处理不好.......................74.2路基挖方...........................................74.2.1浅挖路基处理不好..............................74.2.2挖方坡比不满足设计要求........................74.3路面施工...........................................84.3.1底基层水泥石灰稳定土质量不好..................84.3.2基层水泥稳定碎石层质量不好....................84.3.3沥青混凝土路面质量不好........................84.4桩基础............................................104.4.1孔底沉渣厚度超限.............................104.4.2塌孔、斜孔及缩孔.............................104.4.3钢筋笼变形...................................104.4.4钢筋笼定位不准确.............................114.4.5声测管堵管...................................114.4.6导管进水.....................................114.4.7导管堵管.....................................124.4.8导管拔不出...................................124.4.9水下混凝土灌注桩夹泥、断桩...................124.4.10桩头浇筑高度不够............................134.4.11钢筋笼“浮笼”..............................134.4.12成桩检查桩基偏位............................134.5系梁、承台........................................144.5.1基础模板缺陷.................................144.5.2桩头凿除.....................................144.5.3大体积混凝土裂缝.............................144.6立柱..............................................154.6.1立柱模板缺陷.................................154.6.2钢筋笼保护层厚度超限.........................154.6.3立柱顶部出现水平裂缝.........................164.6.4立柱竖直度偏差过大...........................164.6.5成品保护不到位、或安全标识不清，被机械设备刮碰...................................................174.7盖梁、支座垫石....................................174.7.1盖梁模板缺陷.................................174.7.2抱箍、横梁不稳固导致模板倾斜.................174.7.3盖梁预埋筋（孔）位置偏差超限.................184.7.4垫石标高、偏位、平整度超限...................184.8预制梁............................................184.8.1梁外模缺陷...................................184.8.2梁内膜上浮...................................194.8.3胀模.........................................194.8.4预应力预留孔道堵塞.....................
