非常规钢结构吊装安全专项施工方案(通过专家论证)

12轴横向边次梁17GZL217#1000×600~300×2517.1929.711.83S02、N02轴纵向主梁18GCL218#1000×600~300×3013.8829.79.55S02~S03轴纵向次梁19GZL219#1000×600~300×2524.0729.716.56S03、N03轴纵向主梁20GCL220#1000×600~300×3019.152713.18S03~S04轴纵向次梁21GZL121#1000×600~300×3027.732719.09S04、N04轴纵向主梁22GCL222#1000×600~300×3022.992715.82S04~S05轴纵向次梁A区23GCL123#H1000x300x16x258.4129.72.23S02~S03轴横向边次梁24GCL124#H1000x300x16x258.05272.13S03~S04轴横向边次梁25GCL125#H1000x300x16x257.19271.91S04~S05轴横向边次梁26GCL126#H1000x300x16x258.4129.72.23N02~N03轴横向边次梁27GCL127#H1000x300x16x258.05272.13N03~N04轴横向边次梁28GCL128#H1000x300x16x257.19271.91N04~N05轴横向边次梁合计285.752、工程难点a、钢结构构件单件尺寸大、重量大,给现场施工中吊装及焊接带来相当大难度,焊接过程中应采取厚板焊接工艺(如焊前预热及焊后保温等工艺措施)。b、屋面梁跨度大,最大跨度达34.60m,最小跨度为13.88m,起吊高度高,梁顶标高达40.600m,给钢构件制作运输及吊装方案为该工程的重点难点。南通建工集团股份有限公司第7页共69页NantongConstructionGroupCorporation