Comparison of strength and stiffness parameters of purlins with different cross-sections of profiles - Cracow University of Technology Library

PL UA

Main content

Comparison of strength and stiffness parameters of purlins with different cross-sections of profiles

updating

Type: paper published in a journal

Author
Title variant
Polish
[Porównanie parametrów wytrzymałościowo-sztywnościowych płatwi z kształtowników o różnych profilach przekroju]
Publication date
2020
Published in
Open Engineering
Vol.
10
Number
1
Abstract
English
The article presents comparative analyzes aimed at determining the optimal cross-section used in cold-formed steel purlins. The geometrical characteristics, bending resistance and self-weight of channel, zeta and hat cross-sections were compared. The calculations were made using Dlubal SHAPE-THIN software for the bending by the main axis y-y and z-z. The characteristics for the gross and effective cross-section were determined. Based on the first stage analyzes, a significant decrease in cross-sectional bending resistant was observed as a result of a local buckling. The solution to this problem may be the use of intermediate stiffeners. In the second stage, analysis of the impact of the intermediate stiffeners’ locations on the characteristics of hat sections were conducted. Additional intermediate stiffeners on the webs, on the upper chord, and on the webs and upper chord (together) were considered. A significant effect on the bending resistant with a small increase in the element’s self-weight has been demonstrated. In the third stage, the characteristics of a channel, zeta and hat profile with intermediate longitudinal stiffener in the middle of the web were compared. The performed analyzes demonstrated that the hat cross-section shows a significant advantage in bending by the main axis z-z. This advantage can be used in case of lack of protection against lateral torsional buckling and a larger degree of roof slope.
Keywords
English
steel structures, cold formed profiles, purlins, channel sections, zeta sections, hat sections
Pages range
604-611
Language
English
Place of publication
Warszawa
Publisher
DE GRUYTER Poland
ISSN
2391-5439
Conference name
Konferencja Naukowa Komitetu Inżynierii Lądowej i Wodnej PAN oraz Komitetu Nauki PZITB
Conference number
[LXV]
Conference venue
Conference date
2019
Remarks
Sesja: Konstrukcje metalowe
Go to the Publication
go to (new window)