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.......
