*****桥梁工程钢拱架施工方案编制：复核：审批：重庆***建设（集团）有限责任公司2016年9月9日****1-105m钢筋混凝土箱型拱拱架施工方案1编制说明.................................................-1-1.1编制依据...........................................-1-1.2编制目的...........................................-1-1.3适用范围...........................................-1-2工程概况.................................................-1-3主拱圈现浇拱架的设计.....................................-1-3.1贝雷梁拱架的线形设计...............................-2-3.2贝雷梁拱架的构造与分段.............................-2-3.3贝雷梁拱架单元节段的设计...........................-2-3.3.1单元桁架构件的截面设计.......................-2-3.3.2构件的节点设计...............................-2-3.3.3单元桁架上下弦取值及拱节间拼装角度...........-2-3.3.4贝雷梁拱架基座的设计.........................-2-4贝雷梁拱架计算...........................................-3-5贝雷梁拱架的加工制作.....................................-3-6拱箱底模支垫及拱架预压...................................-3-7拱圈支架布置.............................................-3-8设计依据.................................................-4-9计算方法.................................................-4-9.1设计方法...........................................-4-9.2计算过程...........................................-4-10荷载计算................................................-5-10.1底板施工阶段(高0.55m).............................-5-10.1.1混凝土荷载：................................-5-10.1.2模板、背梢木及人行道荷载....................-5-10.1.3钢管支架荷载................................-5-10.2腹板施工阶段(高1.0m)..............................-6-10.2.1混凝土荷载..................................-6-10.2.2模板、背梢木及人行道荷载....................-6-10.2.3钢管支架荷载................................-6-10.3顶板施工阶段(高0.45m).............................-6-10.3.1混凝土荷载..................................-7-10.3.2模板、背梢木及人行道荷载....................-7-10.3.3钢管支架荷载................................-7-11贝雷梁材质及力学特性....................................-7-12拱架计算模型............................................-7-13拱架结构计算............................................-8-13.1拱架计算结果分析..................................-8-14钢管支架及模板计算.....................................-14-14.1模板及支架自重荷载...............................-14-14.2主拱圈混凝土荷载.................................-15-14.3钢管支架结构布置.................................-15-****1-105m钢筋混凝土箱型拱拱架施工方案14.4施工荷载.........................................-15-14.5风荷载...........................................-15-14.6钢管支架受力计算.................................-18-14.6.1实心段下方钢管受力计算.....................-18-14.6.2空心段下方钢管受力计算.....................-19-14.7模板计算.........................................-23-14.7.1验算实心段模板.............................-19-14.7.2验算空心段模板.............................-22-14.8模板计算（2）....................................-23-14.8.1拱圈混凝土模板支撑系统设计.................-23-14.8.2拱圈拱腰底模支撑系统设计...................-25-15预埋件计算.............................................-30-15.1混凝土局部承压计算...............................-31-15.2预埋件计算....................................
