Predicting rotational restraint provided to wall girts and roof purlins by through-fastened metal panels

This paper introduces mechanics-based expressions for predicting the rotational restraint provided by through-fastened metal panels to Z- and C-section girts or purlins. The analytical prediction equations include the effect of local panel deformation at a screw, and girt or purlin flange bending at...

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Bibliographic Details
Published in:Thin-walled structures 2012-12, Vol.61, p.145-153
Main Authors: Gao, Tian, Moen, Cristopher D.
Format: Article
Language:English
Subjects:
Constraints
Flanges
Girt
Joists
Mathematical analysis
Mathematical models
Panels
Prediction method
Purlin
Rotational
Rotational restraint
Stiffness
Through-fastened metal panel
Uplift
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Summary:This paper introduces mechanics-based expressions for predicting the rotational restraint provided by through-fastened metal panels to Z- and C-section girts or purlins. The analytical prediction equations include the effect of local panel deformation at a screw, and girt or purlin flange bending at a through-fastened connection. Finite element parameter studies are performed to quantify the local fastener pull-out stiffness for a common panel profile, and flange bending stiffness is determined with a cantilever beam model. Rotational restraint experiments are conducted to validate the prediction equations. The through-fastened connection stiffness is simulated in a finite strip elastic buckling analysis with a rotational spring to demonstrate how system effects can be included in design. ► This paper predicts the rotational restraint provided by the panel to the girt. ► Experiments are conducted to validate the prediction. ► The effect of the rotational restraint on a buckling analysis is shown.
ISSN:0263-8231
1879-3223
DOI:10.1016/j.tws.2012.06.005