Investigating the Buckling Behaviour of Single Layer Geodesic and Reticulated Space Structures

Subject Areas : Analysis of Structure and Earthquake

Ziaaddin Zamanzadeh ¹ , sadegh choupani ²

1 - مدیریت گروه عمران
2 - Department of Civil Engineering, Bostanabad Branch, Islamic Azad University, Bostanabad, Iran,

Received: 2017-10-12 Accepted : 2018-01-06 Published : 2018-01-17

Keywords:

Abstract :

The present paper investigates the buckling behaviour of single layer geodesic and reticulated dome form of space structures. For this purpose, three aims have been pursued. Initially, the results of linear and non-linear buckling analysis have been compared by finite element method. Correctness of the utilized finite element method has been checked by results of previous articles, then with description of slenderness factor of dome as geometrical parameter of dome, by investigating the results of non-linear buckling analysis that resulted for domes with different slenderness factors, the rage that general buckling, dimple buckling and member buckling can occur have been determined. The ultimate aim is earning relations for estimating critical buckling load of single layer geodesic and reticulated dome form of space structures. By using these relations, buckling loads of domes could be estimated accurately without any need to time-consuming non-linear analysis and complicated mathematical calculations. In order to achieve to these three goals, the geometrical modelling of structures has been performed by programming at MatLab and coordinates of dome's joints have been determined.