城阳区xxxx天桥工程人行天桥施工方案二0一七年九月第1页目录第一章：编制依据及工程概况.............................................................................................................2一、施工依据...................................................................................................................................................2二、编制原则...................................................................................................................................................3三、技术规范...................................................................................................................................................3四、工程概况：..............................................................................................................................................3第二章：构件制作分段情况..............................................................................................................................4一、天桥分段...................................................................................................................................................4三、分段立面及胎架......................................................................................................................................6四、每段重量...................................................................................................................................................6第三章：现场吊装及部署..................................................................................................................................7一、施工特点...................................................................................................................................................7二、施工难点...................................................................................................................................................7三、施工关键...................................................................................................................................................7四、吊装具体部署..........................................................................................................................................8五、现场拼装及桥上安保措施.....................................................................................................................17六、钢箱梁焊接技术措施..............................................................................................................................18（一）焊接部署及工艺准备.........................................................................................................................18（二）焊接施工顺序和要求.........................................................................................................................20（三）焊接施工中质量管理.........................................................................................................................21（四）焊接应力控制......................................................................................................................................22（五）焊接工艺评定......................................................................................................................................23七、施工注意事项................................
