现场安全资料实例(134)附着升降脚手架搭、拆施工方案二十二
FP-3.5可滑动导柱升降脚手架安装、操作管理细则五
FP-3.5可滑动导柱升降脚手架安装、操作管理细则五 五、附着升降脚手架的安装 1. 支架的安装 (1) 组装附着升降脚手架的支架时,先搭设一个安装层平台,平台的位置应低于该安装楼面100~200mm,并能够承受10kN/m2的荷载。平台水平度应控制在20mm范围内。平台的宽度应大于升降脚手架的宽度300mm,平台边缘设有防护栏杆。 (2) 组装第一步架。第一步架的组装是整套升降脚手架安装质量的关键,一定要认真仔细,严格按要求进行。 1) 一般来说,应以建筑物外形结构形状变化复杂,支架同结构相关的地方作为支架搭设的起始点。 2) 依照架体平面布置图,在预先搭设的平台上搭设,应保证立杆、横杆的垂直度和水平度在标准规定的范围内,严格控制标准离墙距离。 3) 立杆的相邻结点要错开,以保证支架的整体刚度。 4) 建立每个提升点处立杆相对建筑物相关轴线的尺寸关系档案,以反映每个爬升机构相对控制轴线的尺寸关系,关确定准确的预埋点位置尺寸。 (3) 组装后序支架,除按以上要求进行外,还应注意以下几点: 1) 在搭设时如出现误差积累造成某一立杆点左右位置偏差太大时,可现场根据具体情况调整横杆长度组合。 2) 支架继续往上搭设,要控制立杆与每一楼层的标准墙距离和相应的垂直度和水平度要求。 3) 按照确定的预埋点位置尺寸设置预埋件。 4) 根据施工现场进度,保持支架至少高出施工楼面半层的高度。 5) 在爬升机构未安装好以前,支架应与建筑物有临时连墙拉接处理,以保证支架的刚性及安全。 6) 安装廊道斜杆和内外排剪刀撑。 7) 搭设每步架的脚手板、扶手及安全网,架体最底一步的架底平面要用脚手板封闭,以防止物品掉落,如果使用钢筋网片或密封性不好的脚手板,应每隔三步架封闭一层。 |
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