PSI - Issue 64

ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Structural Integrity Procedia 00 (2023) 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 64 (2024) 65–73

SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Degree of composite action of steel beams with precast concrete hollow core slabs Parinaz Panjehbashi Aghdam a , Serge Parent a , David W. Dinehart b , Nathalie Roy a * a Université de Sherbrooke, Sherbrooke, Québec, Canada b Villanova University, Pennsylvania, United States Abstract Different construction challenges followed by harsh environmental conditions triggered the human intention to precast composite structures. The precast concrete hollow core (PCHC) slabs have been popular, especially for multi-story long-span composite structures. In comparison to conventional solid concrete slabs, they have the advantages of being more lightweight, fire-resistant, soundproof, and cost-effective. However, the composite action between the steel beams and PCHC slabs is neglected in the design codes. This paper aims to investigate the composite action between the PCHC slabs and steel beams through an experimental study. Two full-scale flexural tests were performed on specimens of 203 cm and 254 cm PCHC slabs connected to the steel beam via 19 mm diameter shear studs. Instrumentations and data acquisition systems recorded the failure modes and crack formations. Also, the digital image correlation (DIC) technique was applied to capture the neutral axis position during the loading process. Finally, the degree of composite action (DCA), an important parameter to describe the structural behavior of the composite beam, was calculated based on the analytical and experimental bending moments of the specimens. © 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: Composite construction; Precast concrete hollow core slab; Composite interaction; Flexural test; Shear connector SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Degree of composite action of steel beams with precast concrete hollow core slabs Parinaz Panjehbashi Aghdam a , Serge Parent a , David W. Dinehart b , Nathalie Roy a * a Université de Sherbrooke, Sherbrooke, Québec, Canada b Villanova University, Pennsylvania, United States Abstract Different construction challenges followed by harsh environmental conditions triggered the human intention to precast composite structures. The precast concrete hollow core (PCHC) slabs have been popular, especially for multi-story long-span composite structures. In comparison to conventional solid concrete slabs, they have the advantages of being more lightweight, fire-resistant, soundproof, and cost-effective. However, the composite action between the steel beams and PCHC slabs is neglected in the design codes. This paper aims to investigate the composite action between the PCHC slabs and steel beams through an experimental study. Two full-scale flexural tests were performed on specimens of 203 cm and 254 cm PCHC slabs connected to the steel beam via 19 mm diameter shear studs. Instrumentations and data acquisition systems recorded the failure modes and crack formations. Also, the digital image correlation (DIC) technique was applied to capture the neutral axis position during the loading process. Finally, the degree of composite action (DCA), an important parameter to describe the structural behavior of the composite beam, was calculated based on the analytical and experimental bending moments of the specimens. © 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: Composite construction; Precast concrete hollow core slab; Composite interaction; Flexural test; Shear connector © 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

Nomenclature A s Nomenclature A s b

cross-section area of the steel beam overall width of the steel beam flange cross-section area of the steel beam overall width of the steel beam flange

b

* Corresponding author. Tel.: +1- 819 821-8000, poste 67638 E-mail address: nathalie.roy@usherbrooke.ca * Corresponding author. Tel.: +1- 819 821-8000, poste 67638 E-mail address: nathalie.roy@usherbrooke.ca

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 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

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 10.1016/j.prostr.2024.09.211