PSI - Issue 44

ScienceDirect Structural Integrity Procedia 00 (2022) 000–000 Structural Integrity Procedia 00 (2022) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceDire t Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 44 (2023) 2334–2341

© 2023 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 the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. Abstract This paper proposes a new approach for the seismic design of Automated Rack Supported Warehouses (ARSWs), which relies on the dissipation of seismic energy through the yielding of diagonal element. To obtain the desired global collapse mechanism it is necessary to respect the capacity design philosophy. The fulfillment of this request is challenging for the profiles adopted in ARSWs, which are thin walled, implying a limited bearing capacity of the connection that is typically the weak spot of the structure. To this end, the paper presents a solution in which the cross section of the profiles is locally reduced to limit tensile resistance. At first, numerical optimization is performed for the optimization of the layout of the reduced parts, aiming to find the right balance among tensile resistance, ductility demand and good performance in compression. Different layouts are selected in order to obtain different levels of ductility or to compare different patterns for the same level of ductility. Then, the actual behaviour is validated through the execution of an extensive experimental campaign where tensile and compression monotonic tests are performed, as well as cyclic ones. © 2022 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 the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: Thin walled profiles, reduced sections, Automated Rack Supported Warehouses. XIX ANIDIS Conference, Seismic Engineering in Italy Experimental validation of dissipative reduced-section thin walled diagonals for seismic-resistant Automated Rack Supported Warehouses Agnese Natali a *, Francesco Morelli a a Department of Industrial and Civil Engineering, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy Abstract This paper proposes a new approach for the seismic design of Automated Rack Supported Warehouses (ARSWs), which relies on the dissipation of seismic energy through the yielding of diagonal element. To obtain the desi d global collap e mechanism it is neces ary o respect the capacity desi n philosophy. The fulfillment of this request is chall nging for the rofil s dopted in ARSWs, which are thin walled, implyi g a limited bearing capacity f t e conn ction that is typically the weak spot of the structure. To t is end, the paper presents a solut on in which the ross section of the profiles i locally reduced to limit tensil resistance. At fir t, umerical optimization i perf rmed for t e optimization f the layout of the reduced parts, aiming to find th ight balance among tensile resistance, ductility de an and go d performance in compression. Different layouts are selected in order to obtain differ t v ls of ductility or to comp re different patter s for the same level of ductility. Then, th actual behavi ur is vali at d through the execution of an extensive experimen al campaign wher t nsile and ompression monotonic tests are performed, as well as cyclic ones. © 2022 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 the scientific committee of the XIX ANIDIS C nference, Seismic Engineering in Italy Keywords: Thin walled profiles, reduced sections, Automated Rack Supported Warehouses. XIX ANIDIS Conference, Seismic Engineering in Italy Experimental validation of dissipative reduced-section thin walled diagonals for seismic-resistant Automated Rack Supported Warehouses Agnese Natali a *, Francesco Morelli a a Department of Industrial and Civil Engineering, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy

* Agnese Natali. Tel.: +39-050-22-18-246 E-mail address: agnese.natali@dici.unipi.it * Agnese Natali. Tel.: +39-050-22-18-246 E-mail address: agnese.natali@dici.unipi.it

2452-3216 © 2022 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 the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy 2452-3216 © 2022 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 the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy

2452-3216 © 2023 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 the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. 10.1016/j.prostr.2023.01.298