整體爬升式腳手架施工方案.doc

 整體爬升式腳手架施工方案
本工程主體高度為71.2米，結合建筑物結構形式，根據本公司類似工程的施工管理經驗，四層以下采用雙排落地式鋼管扣件腳手架，四層以上采用整體爬升式腳手架。
節11.1爬升外腳手架的設計構想
腳手架以不大于7m的跨度為一個單元，共設30個承力底托，30個挑梁及電動葫蘆，架體共12步加一步護身欄，總高18.60m，橫豎桿間距1.4m左右，雙排架子寬0.8m，里排桿距建筑物0.5m，架體最下面一步架為承力桁架，承力桁架部分每個節間均設斜腹桿。承力桁架兩端坐落在承力底托上，承力底托里端用M22螺栓與建筑物邊梁固定，外端用φ25斜拉桿與上一層邊梁拉結，懸掛電動葫蘆的挑梁固定方法同承力底托。
節11.2爬升外腳手架的安裝及提升工藝流程
    1、安裝工藝流程：
搭設操作平臺架子→安裝承力底托→搭設承力桁架→搭設整個架體→設立拉結點→架體鋪板、掛網→安裝挑梁、電動葫蘆→連接葫蘆與承力底托→安裝防外傾裝置→安裝防墜落→檢查驗收。
2、提升工藝流程：
檢查掛鉤→松開所有固定拉結→撤離架體上所有活荷載→短暫開動葫蘆、繃緊鏈條→調整葫蘆鏈條使之受力均勻→拆除承力底托與建筑物的連接→開機提升，觀察同步情況→提升到位安裝承力底托→安裝承力底托拉結點→檢查驗收后提供使用。
在使用期間將挑梁、電動葫蘆升到上一層以備下
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
 

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