目 录 1. 前言 ........................................................................................................................................................ 3 2. 工程概况 ................................................................................................................................................ 3 2.1 桥梁工程概况 ................................................................................................................................... 3 2.2 箱梁构造的主要技术参数 ............................................................................................................... 3 3. 总体施工布署及施工准备 .................................................................................................................... 4 3.1 组织机构与作业队安排 ................................................................................................................... 4 3.2 主要设备、人员配置计划 ................................................................................................................ 6 3.3 混凝土生产及供应 ........................................................................................................................... 8 3.4 试验室 ............................................................................................................................................... 8 3.5 施工便道 ........................................................................................................................................... 8 3.6 施工、生活用水用电 ....................................................................................................................... 8 3.7 生活、办公用房 ............................................................................................................................... 9 4 . 施工进度计划 ...................................................................................................................................... 9 4.1 总工期目标 ....................................................................................................................................... 9 4.2 每孔梁的施工周期 ........................................................................................................................... 9 5 . 移动模架施工 .................................................................................................................................... 10 5.1 移动模架结构及特点 ...................................................................................................................... 10 5.2 移动模架作业原理 .......................................................................................................................... 18 5.3 各阶段施工步骤及工况 .................................................................................................................. 18 5.4 特殊工况 .......................................................................................................................................... 21 5.5 移动模架拼装 .................................................................................................................................. 21 5.6 移动模架预压及预拱度设置 .......................................................................................................... 22 6 . 关键工艺施工方法 ............................................................................................................................ 25 6.1 支座安装 .......................................................................................................................................... 25 6.2 箱梁钢筋施工 .................................................................................................................................. 26 6.3 钢配件加工 ...................................................................................................................................... 29 6.4 耐久性混凝土施工 .......................................................................................................................... 29 6.5 预应力施工 ...................................................................................................................................... 43 6.6 管道压浆、封锚施工 ...................................................................................................................... 49 6.7 结构构造及裂缝控制 ...................................................................................................................... 55 6.8 移动模架 .......................................................................................................................................... 56 7 . 移动模架施工质量要求 .................................................................................................................... 56 7.1 模架拼装 .......................................................................................................................................... 57 7.2 搅拌控制 .......................................................................................................................................... 57 7.3 混凝土运输条件 .............................................................................................................................. 57 7.4 混凝土浇筑 ..................................................................................................................................... 57 7.5 混凝土振捣 ...................................................................................................................................... 57
