Capacity Reserves in the Global Buckling Analysis of Steel Columns
| Author(s): |
Peter Knoedel
Alfred Mueller Markus Hafner Asmaa Abul Ola |
|---|---|
| Medium: | conference paper |
| Language(s): | English |
| Conference: | 35th Annual Symposium of IABSE / 52nd Annual Symposium of IASS / 6th International Conference on Space Structures: Taller, Longer, Lighter - Meeting growing demand with limited resources, London, United Kingdom, September 2011 |
| Published in: | IABSE-IASS 2011 London Symposium Report |
| Year: | 2011 |
| Abstract: |
In steel skeleton multi-storey buildings the global buckling analysis of columns is very often carried out on basis of individual single span members regarded as cut out of the system. With continuous columns and similar heights between the floors the section in the bottom storey will be governing due to the highest compressive load. In order to be on the safe side and to receive quick results it is common practice to have this section analysed with pinned ends. Capacity reserves result from the fact that both, the stepped compressive load and the actual restraints at the column base, shorten the buckling length of the column and thus increase the buckling load. These effects are investigated in the present paper for practical column dimensions. It is shown, in which cases it is worthwhile to undertake a higher effort in structural analysis. |
| Keywords: |
imperfections second order theory buckling length steel columns buckling load buckling restraints elastic subsoil base-plate clamped support stepped normal load bottom support multi storey column
|
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data sheet - Reference-ID
10065290 - Published on:
03/10/2011 - Last updated on:
05/07/2021
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