1提高桩基钢筋剥肋直螺纹套筒连接合格率南充市都京港嘉陵江大桥工程桥梁桩基QC活动小组单位：中交四航局第三工程有限公司日期：2015年10月2015年度中交四航局QC小组成果材料1目录一、工程概况···············································································2二、小组简介···············································································2三、选题理由···············································································3四、现状调查、分析······································································4五、原因分析···············································································7六、确定要因···············································································9七、制定对策··············································································11八、对策实施··············································································11九、效果检查··············································································15十、巩固措施及标准化··································································17十一、活动体会及下一步计划·························································172提高桩基大直径钢筋剥肋直螺纹套筒连接合格率一、工程概况都京港嘉陵江大桥工程路线全长3.40km（左线长3.394km），双向六车道、路幅宽度30m。包括新建互通主线桥梁2座（大中桥），总长1319.5m；匝道桥梁6座，总长802m，特大桥1座，桥长1018m（其中主桥长464m，引桥长554m），大中桥1座，长246m，隧道1座，总长309m。主桥为双塔单索面预应力混凝土矮塔斜拉桥，桥跨布置为（122+220+122）m。项目共有桩基760根，其中主筋为大直径钢筋（28、32）桩基666根，占桩基总数的87.6%。桩基钢筋笼采用9m钢筋进行制作，钢筋笼采用剥肋直螺纹套筒进行连接。220m122m122m全桥总长464m二、小组简介小组成员由项目部相关管理人员和及现场工人共8人组成，小组概况见下表：表1小组概况表小组名称桥梁桩基QC活动小组注册时间2015年7月课题名称提高桩基钢筋剥肋直螺纹套筒连接合格率注册号Sgs201506活动时间2015年4月-2015年10月小组类型现场型姓名性别组内职务文化程度小组分工QC教育时间冉华琼女组长本科统筹安排48小时廖二兵男副组长本科组织实施48小时张超男组员大专现场过程控制48小时梁紫龙男组员大专现场过程控制48小时吴咏潇男组员大专现场质量控制48小时蔡万升男组员大专现场试验检测48小时王宇男组员大专试验检测48小时张海平男组员高中现场施工48小时3表2、活动计划表活动计划和实际进度表序号项目2015年4月-2015年10月4567891011121231现状调查2目标确定3原因分析4要因确认5制定对策6对策实施7效果检查8巩固措施计划---------实际三、选题理由大直径钢筋剥肋直螺纹套筒连接技术在桩基钢筋笼加工及安装过程中使用方泛，特别是长短丝的应用。丝头加工抽查...
