Effective static wind-induced force estimation for clips between purlins and metal panels of standing-seam metal roofing system

Abstract

This paper mainly focuses on the establishment of an effective static estimation method for the extreme wind-induced force for clips between purlins and metal panels of the standing-seam metal roofing system (hereinafter referred to as SMRS) of typical double-slope light-weight steel portal frame structure considering dynamic characteristics of wind and structure. First, simultaneous pressure measurement with rigid gable roof models was conducted mainly considering the length-span ratio in the boundary layer wind tunnel of Tokyo Polytechnic University, Japan. Then, finite element modeling for SMRS according to the wind load path in the roofing system was carried out to check the actual wind load of the clips based on the traditional calculation method provided in design codes, and the spatial correlation of fluctuating wind pressure on the roof surface, as well as the dynamic effect of the roof structure itself, had been considered. According to the related Chinese, American, and Japanese codes, a magnification coefficient based on the traditional method of static wind-induced force for the clips was calculated and compared. Finally, a simplified estimation method of effective wind-induced force for the clips in typical zones on the roof surface considering dynamic characteristics was proposed.

Graphical abstract

Keywords

effective static wind-induced force estimation / clips / standing-seam metal roofing system / dynamic characteristics

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Higher Education Press