整体爬升式脚手架施工方案.doc

 整体爬升式脚手架施工方案
本工程主体高度为71.2米，结合建筑物结构形式，根据本公司类似工程的施工管理经验，四层以下采用双排落地式钢管扣件脚手架，四层以上采用整体爬升式脚手架。
节11.1爬升外脚手架的设计构想
脚手架以不大于7m的跨度为一个单元，共设30个承力底托，30个挑梁及电动葫芦，架体共12步加一步护身栏，总高18.60m，横竖杆间距1.4m左右，双排架子宽0.8m，里排杆距建筑物0.5m，架体最下面一步架为承力桁架，承力桁架部分每个节间均设斜腹杆。承力桁架两端坐落在承力底托上，承力底托里端用M22螺栓与建筑物边梁固定，外端用φ25斜拉杆与上一层边梁拉结，悬挂电动葫芦的挑梁固定方法同承力底托。
节11.2爬升外脚手架的安装及提升工艺流程
    1、安装工艺流程：
搭设操作平台架子→安装承力底托→搭设承力桁架→搭设整个架体→设立拉结点→架体铺板、挂网→安装挑梁、电动葫芦→连接葫芦与承力底托→安装防外倾装置→安装防坠落→检查验收。
2、提升工艺流程：
检查挂钩→松开所有固定拉结→撤离架体上所有活荷载→短暂开动葫芦、绷紧链条→调整葫芦链条使之受力均匀→拆除承力底托与建筑物的连接→开机提升，观察同步情况→提升到位安装承力底托→安装承力底托拉结点→检查验收后提供使用。
在使用期间将挑梁、电动葫芦升到上一层以备下
Climbing Scaffolding overall construction plan
The works of the main height of 71.2 meters, combined with the building structure, according to the company's construction management experience in similar projects, the following four double floor steel fasteners used scaffolding, used for more than four overall climb scaffold.
Section 11.1 to climb scaffolding outside the design concept
Scaffolding in the span of less than 7m as a unit, a total of 30 load-bearing end of care, 30 percent of beam and electric hoist, rack body 12 Step by step Protection Gear column, total height 18.60m, 1.4m spacing bar anyway about double the shelf width 0.8m, shot from the inside row of buildings 0.5m, rack on the bottom step frame for the load-bearing truss, load-bearing part of each truss section located between the oblique belly bar. Bearing truss ends located in the bearing mountings, bearing with M22 bolt bottom end Tory Building side beams and stationary, the outer end with a φ25 rod and the layer of oblique edge beam Rachel, hanging electric hoist the cantilever beam fixation with the bearing pedestal.
Section 11.2 to climb scaffolding outside the installation and upgrade process
    1, the installation process:
Erection platform shelf installation bearing pedestal → → → erection truss erection bearing the rack on the establishment of Latin Node → → rack on ceiling, hanging net → install the roof beam, electric hoist hoist and bearing → Connection → install anti-base care extraversion install fall protection devices → → examination and acceptance.
2, enhance the process:
Check hook → release → Rachel withdrawal of all fixed frame body of all the live load → short starting block, tighten the chain hoist chain → adjusted so that the balanced force → removal of bearing pedestal and start building connections → enhanced observation → improve synchronization conditions in place to install bearing installation bearing bottom end of care → node → Torah, after inspection and acceptance of their use.
During the use of cantilever beam, electric hoist to rise to the level to prepare for the next