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

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

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Typ: referat opublikowany w czasopiśmie

Autor
Wariant tytułu
polski
[Porównanie parametrów wytrzymałościowo-sztywnościowych płatwi z kształtowników o różnych profilach przekroju]
Data wydania
2020
Opublikowane w
Open Engineering
Vol.
10
Numer
1
Abstrakt
angielski
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.
Słowa kluczowe
angielski
steel structures, cold formed profiles, purlins, channel sections, zeta sections, hat sections
Zakres stron
604-611
Język
angielski
Miejsce wydania
Warszawa
Wydawca
DE GRUYTER Poland
ISSN
2391-5439
Nazwa konferencji
Konferencja Naukowa Komitetu Inżynierii Lądowej i Wodnej PAN oraz Komitetu Nauki PZITB
Numer konferencji
[LXV]
Miejsce konferencji
Data konferencji
2019
Uwagi
Sesja: Konstrukcje metalowe
Link do publikacji
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