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悬挑式钢平台施工方案三 | 2011-1-18 23:35:00
现场安全资料实例(146) 悬挑式钢平台施工方案三
悬挑钢平台施工方案审批表
悬挑钢平台施工方案审批表 悬挑钢平台施工方案 3号楼因暂缓安装人货电梯,为解决施工材料的垂直运输,在建筑物外围搭设悬挑钢平台,悬挑平台尺寸3.4m×4m(图2-4-7-1)。具体设计方案如下。 一、悬挑平台构造 1. 设计极限荷载为2t,为安全考虑,钢平台实际使用荷载控制在1.5t。 2. 悬挑平台以2根20a工字钢为主梁,以4根Φ20钢绞线悬挑于上层剪力墙上,钢丝绳与主梁工字钢通过不小于Φ20(圆钢)做成的吊环连接,连接部位应使用卡环(图2-1-7-2)。 3. 3根次梁采用18号工字钢,次梁一端搁置在主体结构梁上与预埋件焊接,一端搁置在主梁上与主梁焊接。 4. 次梁上焊Φ4.8钢管,间距为250mm,上铺9mm厚竹夹板,栏杆为钢管与工字钢焊接,间距为1000mm,立杆上附两道水平杆(图2-1-7-2),栏杆刷红白相间油漆,栏杆外围采用九夹板围护。 5. 所有焊缝应饱满、牢固,符合规范要求,钢丝绳用花篮螺栓(V03.0″型),连接处另加保险钢丝绳两道,每根钢丝绳用4只YT – 22钢丝夹具卡牢。与剪力墙固定端应栓牢。夹板与水平钢管用8号铁丝捆扎牢(图2-1-7-3)。
图2-1-7-1 悬挑式钢平台平面图
图2-1-7-2 悬挑式钢平台剖面图
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- 上一篇:悬挑式钢平台施工方案二
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