PSI - Issue 73

ScienceDirect Structural Integrity Procedia 00 (2025) 000–000 Structural Integrity Procedia 00 (2025) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

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

Procedia Structural Integrity 73 (2025) 125–129

23rd International Conference on Modelling in Mechanics 2025 Numerical verification of typical connection of high thin-walled purlins Přemysl Pařenica a *, Petr Lehner a a Department of Structural Mechanics, Faculty of Civil Engineering, VSB-Technical University of Ostrava, Ludvika Podeste 1875/17, 708 00 Ostrava-Poruba, Czech Republic Abstract The presented paper deals with numerical analysis focused on the behaviour of high thin-walled purlins of 300 mm height and mainly on the way of their connection to other structural elements. In previous publications, numerical models of purlins with and without a reinforcing clip were presented and verified by a large experimental program. This paper then presents results from numerical models modified so that the purlin is bolted to the clip only at the standoff. This method of connecting the trusses is one of the commonly used methods of truss placement, yet it has not been tested in the experimental program. The numerical models used have optimized and verified boundary conditions and parameters. In this paper, purlins of 300 mm height, 1.89 mm plate thickness and 200 mm bearing width are selected. Two spans of supports 3.0 m and 5.1 m are investigated. According to the results, there is a significant effect of the reinforcing clip on the overall load carrying capacity of the detail of the high thin-walled purlins. The effect of additional bolting of the web of tall thin-walled purlins in the connection detail to the supporting structure has a positive effect on the overall load capacity. © 2025 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 23rd International Conference on Modelling in Mechanics 2025 organizers Keywords: numerical analysis; high thin-walled purlins; bolted clip; connection. 1. Introduction Thin-walled cold-formed (TW-CF) steel structures are increasingly used in the construction industry (Carbas and Saka, 2016; Sheta et al., 2023). TW-CF steel is a versatile and cost-effective structural material that has gained considerable popularity in various construction and engineering applications in recent decades. With its high strength- 23rd International Conference on Modelling in Mechanics 2025 Numerical verification of typical connection of high thin-walled purlins Přemysl Pařenica a *, Petr Lehner a a Department of Structural Mechanics, Faculty of Civil Engineering, VSB-Technical University of Ostrava, Ludvika Podeste 1875/17, 708 00 Ostrava-Poruba, Czech Republic Abstract The presented paper deals with numerical analysis focused on the behaviour of high thin-walled purlins of 300 mm height and mainly on the way of their connection to other structural elements. In previous publications, numerical models of purlins with and without a reinforcing clip were presented and verified by a large experimental program. This paper then presents results from numerical models modified so that the purlin is bolted to the clip only at the standoff. This method of connecting the trusses is one of the commonly used methods of truss placement, yet it has not been tested in the experimental program. The numerical models used have optimized and verified boundary conditions and parameters. In this paper, purlins of 300 mm height, 1.89 mm plate thickness and 200 mm bearing width are selected. Two spans of supports 3.0 m and 5.1 m are investigated. According to the results, there is a significant effect of the reinforcing clip on the overall load carrying capacity of the detail of the high thin-walled purlins. The effect of additional bolting of the web of tall thin-walled purlins in the connection detail to the supporting structure has a positive effect on the overall load capacity. © 2025 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 23rd International Conference on Modelling in Mechanics 2025 organizers Keywords: numerical analysis; high thin-walled purlins; bolted clip; connection. 1. Introduction Thin-walled cold-formed (TW-CF) steel structures are increasingly used in the construction industry (Carbas and Saka, 2016; Sheta et al., 2023). TW-CF steel is a versatile and cost-effective structural material that has gained considerable popularity in various construction and engineering applications in recent decades. With its high strength- © 2025 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 event organizers

* Corresponding author. E-mail address: premysl.parenica@vsb.cz * Corresponding author. E-mail address: premysl.parenica@vsb.cz

2452-3216 © 2025 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 23rd International Conference on Modelling in Mechanics 2025 organizers 2452-3216 © 2025 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 23rd International Conference on Modelling in Mechanics 2025 organizers

2452-3216 © 2025 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 event organizers 10.1016/j.prostr.2025.10.020