PSI - Issue 64

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2023) 000–000 Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 64 (2024) 1798–1805

SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Fire behavior of Automated Rack Supported Warehouses Margherita Autiero a , Donatella de Silva a, *, Emidio Nigro a a Department of Structures for Engineering and Architecture, University of Naples Federico II, Via claudio 21, Naples (Italy) Abstract The fire behavior of the automated rack-supported warehouse (ARSW) is a topic of great interest both for the scientific community and for the manufacturers of industrial racks. However, their behavior in case of fire of is still poorly known. ARSW is a particular type of steel racks that combine the structural efficiency of steel construction with automated machines for handling stored products. The paper investigates the fire scenario and the collapse mechanism of a typical ARSW by considering a fire model that allows vertical and horizontal propagation, starting from a localized fire, evaluated, and validated against experimental results. The study comprises two fundamental phases: fire simulation using a multi-zone model and investigation of the structural elements collapse through finite element structural analysis. An iterative procedure is proposed to correctly analyze the progressive mechanism of collapse by carrying out several subsequent implicit analyses with SAFIR software. © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of SMAR 2024 Organizers Keywords: Automated rack-supported wherehouses (ARSW); cold-formed steel members (CFS); fire resistance. 1. Introduction and state of the art Automated Rack Supported Warehouses (ARSWs) combine the structural efficiency of steel construction with automated machines for handling stored products. ARSWs can be seen as the direct upgrade of traditional Steel Racks (SRs), where the steel racks are both the stored areas and the structure of the warehouse. Fig. 1a illustrates a typical ARSWs’ structure during its construction. The traditional structural steel racking system is characterized by two principal directions and by a regular sequence of frames composed of several shoulders, made of two uprights (the vertical members), connected in the DA direction by pallet beams devoted to bringing the goods and in the CA © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of SMAR 2024 Organizers

* Corresponding author. Tel.: +081-7683686. E-mail address: donatella.desilva@unina.it

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of SMAR 2024 Organizers

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