危大工程管控点规范与禁止做法

目录
1 地下室落地外脚手架......................................................................................................................... 1
1.1 地下室外墙外架基础做法：...............................................................................................................1
1.2 地下室外墙拉结节做法.......................................................................................................................1
1.3 地下室外墙剪刀撑设置.......................................................................................................................2

2 地上落地脚手架做法......................................................................................................................... 3
2.1 基础做法 ..............................................................................................................................................3
2.2 连墙件做法 ..........................................................................................................................................4

3 型钢悬挑脚手架................................................................................................................................. 5
3.1 飘窗与阳台处悬挑梁做法...................................................................................................................8
3.2 空调板处做法 ......................................................................................................................................9
3.3 三角支架 ............................................................................................................................................10
3.4 钢丝绳做法 ........................................................................................................................................11
3.5 剪刀撑做法 ........................................................................................................................................13
4 卸料平台.......................................................................................................................................... 13
4.1 卸料平台与结构固定做法：.............................................................................................................14
4.2 卸料平台钢丝绳 ................................................................................................................................14
5 塔吊基础做法 .................................................................................................................................. 16
5.1 塔吊基础做法： ................................................................................................................................16
5.2 塔吊基础排水 ....................................................................................................................................17
6 附着升降脚手架............................................................................................................................... 18
6.1 防坠器 ................................................................................................................................................18
6.2 附着支座支撑做法 ............................................................................................................................19
6.3 阳台部位附着支撑做法.....................................................................................................................21
7 超厚底板钢筋支撑架做法 ............................................................................................................... 22
8 基坑.................................................................................................................................................. 22
8.1 坑外挡水台、排水沟 ........................................................................................................................22
8.2 基坑监测点 ........................................................................................................................................24
9 模板支撑.......................................................................................................................................... 24
9.1 模板支架保留两层架体及水平杆留设.............................................................................................24
9.2 U 托高度——规范做法.....................................................................................................................26
10 施工电梯.......................................................................................................................................... 27
10.1 基础做法........................................................................................................................................27
10.2 基础排水........................................................................................................................................30
10.3 附着做法........................................................................................................................................31
10.4 施工电梯停层平台做法................................................................................................................32

内容摘要：

1、 地下室落地外脚手架
1.1 地下室外墙外架基础做法：

基坑底部外墙外侧留设足够的工作面，基底铺设大于 200mm 级配砂石，外侧设排水沟，每 30m 设
集水坑。脚手架钢管采用￠48*3.0，立杆下设成品底座 150*150，底座下设通长木脚手板（50*250*3000），但不少于两跨立杆。
1.2 地下室外墙拉结做法 1、结合地下室外墙止水螺栓与钢焊接，钢管顶至外墙混凝土墙面，与主节点不得大于 300mm，且从第一步起设置。
2、为了地下外墙防水连墙件可支撑在护坡上。
3、连墙件呈菱形或矩形布置，不得大于二步三跨且不得小于方案设置的数量。

1.3 地下室外墙剪刀撑设置
规范做法
不超过 24 米高脚手架，推荐二种做法：
一是：转角处必设剪刀撑，没高度连续设置，中间每间隔不大于 15m 设置一处剪刀撑；
二是：沿脚手连续设置剪刀撑。
剪刀撑搭接长度不得小于 1 米，且不得小于 3 个旋转扣件。且剪刀撑与每根立杆或小横杆端部相连，且距主节点不得大于 150mm。

投稿会员：芳华