Experimental setups for the measurement of the rotational restraint provided to cold-formed Z-purlins by sandwich panels

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU124704" target="_blank" >RIV/00216305:26110/17:PU124704 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1002/cepa.211" target="_blank" >http://dx.doi.org/10.1002/cepa.211</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cepa.211" target="_blank" >10.1002/cepa.211</a>

Result language

angličtina

Original language name

Experimental setups for the measurement of the rotational restraint provided to cold-formed Z-purlins by sandwich panels

Original language description

Sandwich panels supported by purlins are widely used as the main load bearing part of roof systems of the steel buildings. Sandwich panels provide lateral and rotational restraint to purlins which positively influences their resistance. Lateral restraint given by sandwich panels is equal for both downward load and uplift load applied on the panel’s surface, though the rotational restraint may have different character. The uplift load reduces contact area between the panels and purlins which can result in smaller restraint value. ECCS Publication No 135/CIB Publication 379 states, the rotational restraint for uplift shall be determined by tests with recommended setup, otherwise zero value has to be considered. The recommended setup, originally developed by Joachim Lindner, was also used for the large EASIE testing program, which was the base of the aforementioned recommendation. Test setup from EN 1993-1-3, originally developed by Teoman Peköz for tests with cold-formed purlins and corrugated sheeting, has been considered as inappropriate for sandwich panels because it does not consider effects from transverse load. During the EASIE test program only hot-rolled purlins were tested and therefore evaluation did not take into account section distortion (which is negligible for hot-rolled sections). Application of the test results for cold-formed purlins and conclusion related to the rotational restraint under uplift load therefore requires re-confirmation by tests with cold-formed purlins. Experimental research to determine the rotational restraint given to cold-formed Z purlins by sandwich panels was performed at Brno University of Technology (BUT) in cooperation with Astron Buildings S.A. (Astron). Tested were sandwich panels with direct fastening and hidden fastening, with PUR/PIR and mineral wool core. ECCS/CIB test setup with application of a torsional moment and a modified setup with application of a direct force were used. Several tests were additionally done w

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ce/papers

ISSN

2509-7075

e-ISSN

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Volume of the periodical

1

Issue of the periodical within the volume

2-3

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

1677-1686

UT code for WoS article

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EID of the result in the Scopus database

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