1 目录一、地下连续墙施工工艺流程及施工顺序······················3 施工工艺流程图····································3 二、导墙施工·············································4 导墙测量放样······································5 导墙形式的确定····································5 导墙沟槽开挖······································5 导墙钢筋施工······································6 导墙模板施工······································6 导墙混凝土浇注····································6 导墙的施工允许偏差································6 三、单元槽段成槽施工······································6 单元槽段成槽开挖宽度··························6 单元槽段开挖······································6 成槽时泥浆面控制··································7 清底··············································8 刷壁··············································8 槽段开挖精度······································9 四、泥浆配制和管理········································ 10 泥浆配置与管理··································· 10 泥浆池的容量确定································· 11 五、地下连续墙接头处理··································· 12 六、钢筋笼制作与吊放····································· 12 钢筋笼制作······································ 13 地下连续墙钢筋笼制作的允许偏差··················· 14 钢筋笼吊放······································· 14 七、砼灌注··············································· 15 八、接头管起拔·········································· 16 九、地下连续墙针对性技术措施···························· 16 槽壁坍方预防措施·································1 成槽垂直度控制措施······························· 16 地下连续墙渗漏水预防及处理措施··············· 18 地下墙露筋现象的预防措施························· 19 成槽漏浆现象的预防及处理措施····················· 19 对于钢筋笼无法下放到位的预防及处理措施··········· 19 对预埋件标高控制措施····························· 19 十、地下连续墙墙趾注浆·································· 20 2 地下连续墙施工一、地下连续墙施工工艺流程及施工顺序 施工工艺流程图地下连续墙施工工艺流程图测量放线修筑导墙开挖槽壁土方外运清底换浆吊放钢筋笼下放导管泥浆配制、供应、回收、再生浇注架就位废浆外运回收被置换的泥浆钢筋笼制作吊放接头管拔接头管砼供应槽壁检测浇筑墙体砼不合格合格修整槽壁沉渣检测换浆清底不合格合格合格合格 4 二、导墙施工 导墙测量放样(1 )根据设计图纸提供的坐标计算出地下连续墙中心线角点坐标, 用全站仪实地放出地下连续墙角点, 放样误差≤± 5 mm, 并作好护桩。(
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