海东市中心城区道路与给排水工程海东大道三号桥拱圈施工专项方案编制：审核：批准：中铁二十一局集团第四工程有限公司海东大道三号桥项目部二O一四年十二月二日目录1.编制依据、原则和范围..................................................................................41.1编制依据...................................................................................................41.2编制原则...................................................................................................41.3编制范围...................................................................................................42.工程概况..........................................................................................................4海东大道三号桥主拱圈专项施工方案2.1工期目标...................................................................................................52.2气候条件...................................................................................................52.3工程数量表...............................................................................................52.4工程重、难点...........................................................................................53.施工组织机构及劳力、物资设备组织..........................................................63.1项目部组织机构设置...............................................................................63.2作业班组设置和施工任务安排...............................................................63.3施工机械设备组织...................................................................................73.4主要物资材料情况...................................................................................74.主拱圈施工......................................................................................................74.1施工测量放样...........................................................................................84.2现浇箱型主拱圈施工工艺流程图...........................................................94.3满堂支架搭验算.......................................................................................94.4桥下箱涵安全检算..................................................................................274.4.1主拱支架施工时产生的地面附加荷载............................................274.4.2箱涵结构荷载分析...........................................................................294.4.3覆土厚度2m时箱涵结构计算.........................................................294.4.4覆土厚度3m时箱涵结构计算.........................................................364.4.5覆土厚度4m时箱涵结构计算.........................................................434.4.6结论..................................................................................................50中铁二十一局集团第四工程有限公司海东大道三号桥项目部海东大道三号桥主拱圈专项施工方案4.5地基处理..................................................................................................504.6满堂支架搭设..........................................................................................514.7支架预压..................................................................................................514.8模板工程..................................................................................................534.9钢筋工程....................................................
