宁波地铁拔桩技术.pdfVIP

目 录 一、编制依据······································1 二、工程概况······································1 2.1、工程简况 ···································1 2.2、拔桩区域周边建筑物情况 ·······················1 三、施工总体部署··································1 3.1、机械型号及原理 ······························1 3.2、施工现场管理 ································3 四、施工准备······································4 4.1 测量放线 ····································4 4.2 机械组装及检测 ·······························4 五、灌注桩除施工方案······························4 5.1 施工工艺 ····································4 5.2 施工方法 ····································4 六、工程质量保证措施······························7 6.1 施工质量保证措施 ·····························7 6.2 工期保障措施······································8 6.3 安全生产措施······································8 6.4 文明施工···················· ······················12 七、风险因素以及应急预案··························15 7.1 预防高空作业过程中发生人员伤亡事故·················15 7.2 高处落物伤害应急救援措施···························16 7.3 防止吊机发生倾覆事故·······························16 7.4 预防漏电造成的人员伤亡事故·························16 一、编制依据 本施工组织设计引用的规范标准： 《宁波市轨道交通1号线一期工程全线盾构区间拆复桥梁资料》 《地下铁道、轻轨交通工程测量规范》（GB50308-1999） 《工程测量规范》（GB50206-93） 《建筑桩基技术规范》（JGJ94-94） 二、工程概况 2.1 工程简况 宁波市轨道交通1号线一期工程起于市区西部的高桥镇，终于市区东部的东 外环路站。大部分区间采用盾构区间。为保证盾构顺利掘进，需要将盾构掘进过 程中碰到的桥桩先拔除，沿线共有 11 座桥梁部分桩基需要拔除以及盾构沿线障 碍桩拔除。由于桩的埋深较深，无条件采用一般围护结构取桩的施工技术措施， 拟选择高效、快速、环保的全套管新技术进行拔桩处理。 本工程拔桩范围为 11 座拆复桥梁桩基和沿线障碍桩。桥梁桩基约 95 根，类 型为钻孔灌注桩，桩径为 600、800、1000 三种。障碍桩约 206 根，包括建筑物 基础和管线桥基础，类型有沉管灌注桩、钻孔灌注桩等，部分桩类型需先探明后 才明确。具体内容如下表： 序 拔桩数 所在 权属 里程 桥梁名称 拔除桩类型 号 量（根） 位置 单位 东侧 2 根800 钻孔