PSI - Issue 64

Parinaz Panjehbashi Aghdam et al. / Procedia Structural Integrity 64 (2024) 65–73 Panjehbashi et al. (2024)/ Structural Integrity Procedia 00 (2019) 000 – 000

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Conclusion In this study, two full-scale flexural tests were conducted on composite specimens comprised of steel beams and PCHC slabs. The load-mid-span deflection curves were presented and discussed. The main results can be summarized as below: 1. The DCA was calculated as the ratio of the analytical to experimental bending moment 64% and 68% for the specimens with 254- and 203 mm PCHC slabs, respectively. This highlights the fact that the specimen with 203 mm PCHC slabs shows as better composite action compared to the specimen with 254 mm PCHC slabs. 2. The ultimate failure load of the specimens with 254- and 203 mm of PCHC slabs were recorded as 1638 kN and 1600 kN, respectively. The comparison of the results of two specimen shows that, the higher theoretical flexural capacity of specimen with 254- slab was compensated with lower composite action leading to slight difference between the experimentally measured flexural capacity of the two specimens. 3. The observed failure modes are yielding of the bottom flange of the steel beam followed by shear failure of the PCHC slabs. As a suggestion for future studies, the performance of the composite beam with PCHC slabs can be investigated by improving the shear performance of concrete (e.g. addition of fibers). Also, the composite action of specimens can be calculated through the compatibility of strains on the concrete slab and steel section interface incorporating DIC technique results. Acknowledgments The authors would like to acknowledge the niche development, Lafarge Precast Edmonton, the Natural Science and Engineering Research Council of Canada (NSERC), and the Fond de Recherche du Québec for providing the funding necessary to conduct the experimental tests. Special thanks are extended to Olivier Gauron, the head of the structural laboratory, and Martin Bernard, the technician at the University of Sherbrooke, for their valuable contribution to the test setup and test procedure. References . “Flexural Behavior of a Composite Steel and recast Concrete pen Web issymmetric Framing System.” Engineering Structures 198(June): 109456. doi:10.1016/j.engstruct.2019.109456. Chiorean, Cosmin G., and Stefan M. Buru. . “ ractical Nonlinear Inelastic Analysis Method of Composite Steel -Concrete Beams with artial Composite Action.” Engineering Structures 134(March): 74 – 106. doi:10.1016/j.engstruct.2016.12.017. ehlers, . J., and R. Seracino. a. “A iered Approach to the Fatigue Assessment of Composite Steel and Concrete Bridge Beams. Proceedings of the Institution of Civil Engineers- Structures & Buildings.” : – 57. Shi, Feng Wei, Chang Hui Sun, Xiao Gang Liu, Hao Wang, and Liang Zong. . “Flexural Behavior of refabricated Composite Beam with Cast-in- Situ UH C: Experimental and Numerical Studies.” Structures 45(August): 670 – 84. doi:10.1016/j.istruc.2022.09.048. Sjaarda, Matthew, aylor orter, Jeffrey S. West, and Scott Walbridge. . “Fatigue Behavior of Welded Shear Studs in recast Composite Beams.” Journal of Bridge Engineering 22(11): 1 – 11. doi:10.1061/(ASCE)BE.1943-5592.0001134. Song, Xingyu, Lin Zhao, Yan Liu, and Meng Gong. . “Experimental and Nonlinear Analytical of the Flexural erformance of Timber- Filled Steel ubular Composite Beams.” Engineering Structures 301(August 2023): 117312. doi:10.1016/j.engstruct.2023.117312. Yanez, Sergio J., avid W. inehart, and Sridhar Santhanam. . “Composite Steel Joist Analysis Using Experimental Stiffness Factor from Push- out ests.” Journal of Constructional Steel Research 137(April): 1 – 7. doi:10.1016/j.jcsr.2017.04.001. Yang, ao, Xu Zhou, and Yuqing Liu. . “Flexural erformance of refabricated Composite Beams with Grouped Bolt Shear Connectors under ositive Bending Moments.” Engineering Structures 277(November 2022): 115387. doi:10.1016/j.engstruct.2022.115387. Zhang, Jing, Xiamin Hu, Weijie Fu, Hao u, Qimeng Sun, and Qi Zhang. . “Experimental and heoretical Study on Longitudinal Shear Behavior of Steel- Concrete Composite Beams.” Journal of Constructional Steel Research 171: 106144. doi:10.1016/j.jcsr.2020.106144. Bandelt, Matthew J., Shawn . Gross, avid W. inehart, Joseph Robert Yost, and Joshua . udleiner.