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放散塔钢结构维修

三管放散区域梯子、平台及桁架因腐蚀严重，需修复，确保检修后整体结构强度、刚度及安全性满足相关规范标准。具体工程量如下：
1、平台拆除制作安装共11个。
①、[20槽钢：（8.03m*6个+3.02m*6个+1.29m*6个+3.05m*18个+1.39m+4.10m）*25.777kg/m=
=3.465t；[14b槽钢：（1.76m+2.93m）*16.733kg/m=0.078t;∠100*10角钢：2.30m*33个*15.12kg/m=1.148t；∠160*12角钢:0.13m*18个*29.391kg/m=0.069t；8mm菱形花纹钢板1.5m*2.1m*66.8kg/m2*6+1.2m*7.98m*66.8kg/m2*3=3.182t；10mm钢板3.1m*3.1m* 78.5kg/m2
*3=2.263t；8mm钢板0.1m*1m*33个*62.8kg/m2=0.207t；12mm钢板（0.4m*0.45m*9个+0.28m*0.4m*9个+0.38m*0.35m*9个+0.1m*0.12m*18个）*94.2kg/m2=0.381t;20mm钢板0.15m*0.35m*9*157kg/m2=0.074t;小计(3.465t+0.078t+1.148t+0.069t+3.182t+2.263t+ 0.207t+0.381t+0.074t) *4个=43.468t。             
②、[14b槽钢：（1.58m*10个+6.13m）*16.733kg/m=0.367t; 8mm菱形花纹钢板3.51m*4.72m*
66.8kg/m2=1.107t；∠90*8角钢1.72m*10.946kg/m*10个=0.188t；10mm钢板（0.17m*
0.28m*5个+0.3m*0.22m*5个+0.35m*0.3m*5个+0.08m*0.12m*5个）* 78.5kg/m2=0.09t；小计：（0.367t+1.107t+0.188t+0.09t）*6个= 10.512t。
③、[32C槽钢：(10.49m*7+3.19m*7+1.88m*7+3.23m*21)*48.131kg/m = 8.507t；∠100*10角钢：2.41m*21个*15.12kg/m=0.765t；∠160*10角钢：0.25m*21个*24.729kg/m= 0.13t；8mm菱形花纹钢板1.1m*10.51m* 66.8kg/m2+7.09m*8.51m*66.8kg/m=4.802t;8mm钢板（1.4m*
3.12m*6+2.43m*2.92m*3+0.08m*1.14m*79+0.08m*0.9m*60+1.2m*26.29m*3）*62.8 kg/m2=
9.527t；14mm钢板（0.7m*0.9m*10+0.44m*0.6m*10+0.4m*0.38m*10+0.08m*0.12m*21）*109.9
Kg/m=1.172t；16mm钢板0.32m*0.35m*125.6kg/m*10=0.141t；小计（ 8.507t+0.765t+ 0.13t
4.802t+9.527t+1.172t+0.141t）=25.044t。
④、43.468t+10.512t+25.044t=79.024t。         
2、梯子拆除制作安装12个。
①、[25b槽钢：17.73m*31.335kg/m*2个=1.111t；∠63*6角钢（1.781m*8个+1.11m*13）*5.721kg/m=0.164t；8mm菱形花纹钢板（0.11m*0.98m+0.28m*0.7m*52个+0.8m*0.82m）*66.8kg/m2=0.732t；8mm钢板（0.06m*0.7m*41个+0.8m*0.82m）*62.8kg/m2=0.149t；∠140*90*10角钢0.9m*17.475kg/m=0.015t；∠100*10角钢0.15m*15.12kg/m*2=0.004t；I25a工字钢0.4m*2*38.105kg/m=0.03t;小计：(1.111t+0.164t+0.732t+0.149t+0.015t+0.004t+   0.03t)  *6=13.23t。
②、H150*150*7*10型钢（5.5m*2+0.65m*2）*31.9kg/m=0.392t;12mm钢板0.15m*0.2m*94.2
Kg/m*2=0.006t；20mm钢板0.2m*0.22m*157kg/m2*2=0.014t；8mm钢板0.065m*0.12m*62.8
kg/m2*6=0.003t；小计:0.392t+0.006t+0.014t+0.003t=0.415t。
③、[25b槽钢：13.79m*31.335kg/m*2个=0.864t；∠63*6角钢（2.47m*9个+1.1m*10）*5.721kg/m=0.19t；8mm菱形花纹钢板0.28m*0.7m*44个*66.8kg/m2=0.576t；8mm钢板（0.06m*0.7m*37个+0.8m*0.1m）*62.8kg/m2=0.103t；∠140*90*10角钢1.1m*17.475kg/m=0.019t；∠100*10角钢0.15m*15.12kg/m*2=0.004t；小计：(0.864t+0.19t+0.576t+0.103t+0.019t+0.004t)*5个=8.78t。
④、斜梯栏杆拆除制作安装用DN40焊接钢管 688m*3.87kg/m=2.663t；DN25焊接钢管550m*
2.41kg/m=1.326t；小计3.989t。
⑤、①-④项合计13.23t+0.415t+8.78t+3.989t=26.414t。
3、栏杆拆除制作安装用DN40焊接钢管 671m*3.87kg/m=2.597t；DN25焊接钢管555m*2.41
kg/m=1.338t；4mm钢板28.3m2*31.4kg/m2=0.0.889t；合计2.597t+1.338t+0.889t=4.824t。
4、桁架拆除制作安装10个。
①、∠160*14角钢8.65m*28根*33.987kg/m=8.232t；∠100*10角钢（0.88m*100根+1.47m*86+
1.42m*86根+1.62m*86根）*15.12kg/m=7.195t；18mm钢板（0.26m*0.22m*28+0.26m*0.35m*7+
0.26m*0.5m*14+0.26m*0.55m*14+1.3m*3.08m*7）*141.3kg/m=4.817t；16mm钢板（0.08m*0.12
m*79+0.3m*0.33m*36+0.37m*0.51m*36+0.28m*0.38m*14+0.1m*0.15m*187）*125.6kg/m=1.936
t;小计：（8.232t+7.195t+4.817t+1.936t）*5个=110.9t。
②、∠160*14角钢5.50m*26根*33.987kg/m=4.86t；∠100*10角钢（0.88m*72根+1.47m*57+
1.42m*57根+1.62m*43根）*15.12kg/m=4.502t；18mm钢板（0.26m*0.22m*26+0.26m*0.35m*7+
0.26m*0.5m*14+0.26m*0.55m*14+1.3m*3.08m*7）*141.3kg/m=4.8t；16mm钢板（0.08m*0.12
m*50+0.3m*0.33m*21+0.37m*0.51m*21+0.28m*0.38m*14+0.1m*0.15m*130）*125.6kg/m=1.251
t;小计：（4.86t+4.502t+4.8t+1.251t）*4个=61.652t。
③、I28a工字钢5.09m*14根*43.492kg/m=3.099t；∠100*10角钢（1.35m*12根+1.44m*12+
2.04m*14根+2.10m*14根+0.96m*21+1.8m*21）*15.12kg/m=2.259t；18mm钢板(0.32m*0.45m*
14+0.32m*0.48m*14+0.34m*0.36m*14+0.38m*0.65m*7+1.5m*2m*7)*141.3kg/m=4.042t；小计
（3.099t+2.259t+4.042t）*2个=18.8t。
④、合计：110.9t+61.652t+18.8t=191.352t。
5、支架制作拆除安装2个。
①、H300*150*6.5*9型钢4.5m*4*37.3kg/m=0.671t；∠75*6角钢208m*6.905kg/m= 1.436t；
30mm钢板0.55m2*235.5kg/m=0.129t；20mm钢板0.1m2*157kg/m=0.0157t；12mm钢板26m2*94.2
kg/m2=2.449t；合计：（0.671t+1.436t+0.129t+0.0157t+2.449t）*2=9.401t。
6、因施工现场有管廊等障碍物，吊车占位受限制，依据现场情况，以上所有钢结构拆除、安装吊装用50t汽车吊10台班，70t汽车吊12台班，120t吊车16台班，160t吊车18台班，260t汽车吊14台班；扣除定额吊装费。
7、以上金属结构件除锈刷氯磺化聚乙烯底漆一遍，中间漆两遍，面漆一遍。新旧金属结构件运输2km。拆除后的金属结构件切割成小块，用氧气28瓶，乙炔14瓶，人工40工日。
8、以上项目计取措施费：施工现场设置临时设施；夜间施工；冬、雨季施工费；定位复测、工程点交、场地清理等。

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