Structural response of cold-formed lipped Z purlins – part 1: experimental investigation

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Structural response of cold-formed lipped Z purlins – part 1 : experimental investigation. / Almatrafi, Meshal; Theofanous, Marios; Dirar, Samir; Gkantou, Michaela.

In: Thin-Walled Structures, Vol. 161, 107452, 04.2021.

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@article{3b661fb5c7b949c0960a45e12825cf35,
title = "Structural response of cold-formed lipped Z purlins – part 1: experimental investigation",
abstract = "This paper reports 8 experimental tests on simply supported purlins with lipped Z-sections under gravity loads. The adopted test details are representative of the support conditions typically employed in practice with each specimen comprising two purlins connected to each other at regular intervals with angle struts used in lieu of anti-sag bars and profiled steel sheeting attached to the purlins{\textquoteright} top flanges via self-drilling screws. The observed failure modes included primarily distortional buckling and interactive distortional/local buckling. The moment resistance predictions of EN 1993-1-3 and the Direct Strength Method (DSM) were compared against the experimentally obtained moment resistances and it was concluded that the EN 1993-1-3 strength predictions are overly conservative, whilst the DSM offers more accurate strength predictions. The experimental results are utilized in the companion paper where a numerical study on the optimization of the lip size of Z sections is reported.",
keywords = "Cold-formed steel, Direct strength method, Distortional buckling, Local buckling, Purlins, Z sections",
author = "Meshal Almatrafi and Marios Theofanous and Samir Dirar and Michaela Gkantou",
year = "2021",
month = apr,
doi = "10.1016/j.tws.2021.107452",
language = "English",
volume = "161",
journal = "Thin-Walled Structures",
issn = "0263-8231",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Structural response of cold-formed lipped Z purlins – part 1

T2 - experimental investigation

AU - Almatrafi, Meshal

AU - Theofanous, Marios

AU - Dirar, Samir

AU - Gkantou, Michaela

PY - 2021/4

Y1 - 2021/4

N2 - This paper reports 8 experimental tests on simply supported purlins with lipped Z-sections under gravity loads. The adopted test details are representative of the support conditions typically employed in practice with each specimen comprising two purlins connected to each other at regular intervals with angle struts used in lieu of anti-sag bars and profiled steel sheeting attached to the purlins’ top flanges via self-drilling screws. The observed failure modes included primarily distortional buckling and interactive distortional/local buckling. The moment resistance predictions of EN 1993-1-3 and the Direct Strength Method (DSM) were compared against the experimentally obtained moment resistances and it was concluded that the EN 1993-1-3 strength predictions are overly conservative, whilst the DSM offers more accurate strength predictions. The experimental results are utilized in the companion paper where a numerical study on the optimization of the lip size of Z sections is reported.

AB - This paper reports 8 experimental tests on simply supported purlins with lipped Z-sections under gravity loads. The adopted test details are representative of the support conditions typically employed in practice with each specimen comprising two purlins connected to each other at regular intervals with angle struts used in lieu of anti-sag bars and profiled steel sheeting attached to the purlins’ top flanges via self-drilling screws. The observed failure modes included primarily distortional buckling and interactive distortional/local buckling. The moment resistance predictions of EN 1993-1-3 and the Direct Strength Method (DSM) were compared against the experimentally obtained moment resistances and it was concluded that the EN 1993-1-3 strength predictions are overly conservative, whilst the DSM offers more accurate strength predictions. The experimental results are utilized in the companion paper where a numerical study on the optimization of the lip size of Z sections is reported.

KW - Cold-formed steel

KW - Direct strength method

KW - Distortional buckling

KW - Local buckling

KW - Purlins

KW - Z sections

UR - http://www.scopus.com/inward/record.url?scp=85099715800&partnerID=8YFLogxK

U2 - 10.1016/j.tws.2021.107452

DO - 10.1016/j.tws.2021.107452

M3 - Article

AN - SCOPUS:85099715800

VL - 161

JO - Thin-Walled Structures

JF - Thin-Walled Structures

SN - 0263-8231

M1 - 107452

ER -