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Open AccessArticle

Seismic Design of Grana Cheese Cold-Formed Steel Racks

Department of Architecture, Built Environment and Construction Engineering (ABC), Politecnico di Milano, 20133 Milano, Italy
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Buildings 2020, 10(12), 246; https://doi.org/10.3390/buildings10120246
Received: 2 December 2020 / Revised: 14 December 2020 / Accepted: 16 December 2020 / Published: 18 December 2020
(This article belongs to the Special Issue Structural Analysis for Earthquake-Resistant Design of Buildings)
Since few years ago only one typology of racks was used to store Grana cheese wheels for aging, which was designed focusing on the sole static behavior. Battened steel columns made by vertical tubes welded to horizontal angles were connected by means of wood boards supporting the wheels. In 2012, a strong earthquake occurred in Emilia Romagna (Italy) and a great number of these structures collapsed owing to the absence of checks for resistance against earthquakes. This catastrophic event plus the need to maximize the structural efficiency led to the development of a new typology of rack systems based on the use of cold-formed steel members. Owing to an extremely limited state-of-the-art on these modern cheese rack, design is carried out in agreement with the standard provisions calibrated and proposed for adjustable pallet racks, despite the non-negligible differences between these structural systems. The paper is focused on the comparison between the available seismic design approaches for cheese rack in order to highlight their main advantages and limits. In particular, among the four design approaches admitted in the European standards, the modal response spectrum analysis (MRSA) and the nonlinear time-history (NLTH) have been considered and the associated results compared in terms of maximum safety index of the members, global displacements and interstorey drifts. Research outcomes stress the differences associated with the considered approaches in terms of expected performance underlining the importance of an accurate definition of the behavior (q-) factor. View Full-Text
Keywords: steel storage racks; Grana cheese wheels; modal response spectrum analysis (MRSA); nonlinear time-history (NLTH) approach; behavior (q-) factor; seismic behavior; seismic loads steel storage racks; Grana cheese wheels; modal response spectrum analysis (MRSA); nonlinear time-history (NLTH) approach; behavior (q-) factor; seismic behavior; seismic loads
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MDPI and ACS Style

Bernuzzi, C.; Simoncelli, M. Seismic Design of Grana Cheese Cold-Formed Steel Racks. Buildings 2020, 10, 246. https://doi.org/10.3390/buildings10120246

AMA Style

Bernuzzi C, Simoncelli M. Seismic Design of Grana Cheese Cold-Formed Steel Racks. Buildings. 2020; 10(12):246. https://doi.org/10.3390/buildings10120246

Chicago/Turabian Style

Bernuzzi, Claudio; Simoncelli, Marco. 2020. "Seismic Design of Grana Cheese Cold-Formed Steel Racks" Buildings 10, no. 12: 246. https://doi.org/10.3390/buildings10120246

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