Advanced Package Training Scaffolding 2011.1 - Scia-Software GbR

Contents
1. Introduction ........................................................................................................................ 5
2. Model ................................................................................................................................... 6
3
Scaffolding
General ............................................................................................................................................... 6
Materials ............................................................................................................................................. 7
Cross sections ................................................................................................................................... 8
Construction - linear ......................................................................................................................... 8
FLOOR BOARDS ........................................................................................................................... 9
BRACINGS ..................................................................................................................................... 9
CONNECTIONS ............................................................................................................................. 9
SUPPORTS .................................................................................................................................. 10
END INPUT OF CONSTRUCTION ................................................................................................... 11
3. Load cases and combinations ........................................................................................ 12
General ............................................................................................................................................. 12
Type of load cases ....................................................................................................................... 12
Principle of combinations ............................................................................................................. 14
Load cases in Scia Engineer .......................................................................................................... 14
Load Case 1: Self Weight ............................................................................................................ 15
Load Case 2: Self Weight of the toeboards (and other structural members) .............................. 15
Load Case 3: Service load Main floor .......................................................................................... 15
Load Case 4: Service load Secondary floor ................................................................................. 15
Load Case 5: Service load 25% ................................................................................................... 15
Load Case 6: Maximal Wind load Perpendicular to Facade ........................................................ 16
Load Case 7: Maximal Wind load Parallel to Facade .................................................................. 20
Load Case 8: Working Wind load Perpendicular to Facade ........................................................ 20
Load Case 9: Working Wind load Parallel to Facade .................................................................. 21
Linear Load Combinations ............................................................................................................. 21
Combination 1: Out of service, Wind perpendicular..................................................................... 21
Combination 2: Out of service, Wind parallel ............................................................................... 21
Combination 3: Into service, Wind perpendicular ........................................................................ 21
Combination 4: Into service, Wind parallel ................................................................................... 22
Coefficients ................................................................................................................................... 22
4. Results .............................................................................................................................. 23
5. Steel Code SLS Check EN 1993-1-1 ............................................................................... 24
6. Scaffolding SLS Check – EN 12811-1-1 ......................................................................... 25
7. Steel Code Check ULS Check – EN 1993-1-1 ................................................................ 27
Section Check in Scia Engineer .................................................................................................... 27
Stability Check ................................................................................................................................. 29
Buckling data ................................................................................................................................ 29
Buckling Ratio .............................................................................................................................. 30
Stability Check in Scia Engineer .................................................................................................. 30
8. Scaffolding ULS Check – EN 12811-1-1 ......................................................................... 33
General ............................................................................................................................................. 33
Scaffolding check in Scia Engineer .............................................................................................. 34
9. Non-Linear Combinations ............................................................................................... 35
Overview .......................................................................................................................................... 35
Alpha critical .................................................................................................................................... 38
Global frame imperfection ϕ........................................................................................................... 38
Initial bow imperfection e0 .............................................................................................................. 40