METHOD STATEMENT / SOP FOR 仰拱混凝土施工方案(No ) 目录 1、工作范围······················································································ 3 2、工作内容······················································································ 3 3、参考依据······················································································ 3 4、规范条款······················································································ 3 5、设备···························································································· 3 6、工作人员-组织机构········································································· 3 7、进度计划······················································································ 4 8、施工方法······················································································ 4 9、安全保障措施··············································································· 10 10、质量保障措施············································································· 11 11、应急措施··················································································· 11 1 、工作范围根据工程师要求, TBM 施工隧洞施工组织设计需要分章节上报,本章节主要包括隧洞中下方 100 o(竖轴线左右各 50o)的圆弧面范围仰拱混凝土,单条隧洞衬砌长度为 11500m 。 2 、工作内容主要包括以下工作内容: 、养护。 3 、参考依据本章主要依据以下几方面(1)水工混凝土施工规范; 4 、规范条款 和 5 、设备仰拱混凝土浇筑过程中应用的设备包括:模板台车、污水泵、混凝土振捣棒、附着式振捣器,混凝土运输金刚车。 6 、工作人员- 组织机构为确保仰拱施工正常的运行,需要配置仰拱施工人员,仰拱施工人员配置(不包含混凝土拌制、洞外及支洞内运输人员)如下表: 表 6-1 仰拱施工人员配置表(两班制) 序号岗位人数备注 1 管理人员 3 2 技术人员 4 3 机车司机 4 4 模板工 4 5 混凝土工 4 6 清基工 12 7 桥机司机 2 8 指挥 2 9 辅助 20 共计 55 7 、进度计划计划于 2012 年12月开始施工, 2015 年6月TBM 拆除完成时结束仰拱砼施工。总计 30个月,日平均强度 米,跳仓浇筑则每日一仓,现场施工可根据 TBM 掘进速度提高浇筑强度。为了保证施工进度,建议在洞外做浇筑试验。 8 、施工方法 概述引水隧洞 TBM 在掘进过程中进行仰拱现浇浇筑,混凝土标号 C30 ,仰拱浇筑范围为隧洞正下方 100 o(竖轴线左右各 50o)的圆弧面范围,仰拱砼厚度为 200mm ,单条隧洞衬砌长度为 11500m 、理论浇筑工程总量为 17466m 3。 施工布置洞内施工平面布置图如下图所示隧洞掘进方向拦水梗仰拱模板平面布置图拦水梗 施工流程仰拱砼浇筑流程图轨枕以下水平部分浇筑,(采用软轴承振捣,配合人工抹面) 部分混凝土注入到左侧(由附着式振捣器部分混凝土注入到右侧(由附着式振捣器左侧剩余墙体段浇筑,(由附着式振捣器振捣) 右侧剩余墙体段浇筑,(由附着式振捣器振捣) 模板安装及加固待凝后拆模 主要施工方法及技术要求 新浇混凝土处防干扰
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