Abstract
In this study, a novel composite slab integrating truss girders was introduced. Flexural tests were conducted on a total of eight composite slab specimens to evaluate their negative flexural capacities. Based on the test results, the negative flexural behavior of the composite slabs was analyzed, including the development of catenary action, and the effects of truss girders and diagonally bent integrity reinforcements. All specimens showed satisfactory performance in terms of their flexural strength and stiffness and exhibited high ductility capacities. The test specimens did not show any noticeable degradation in flexural strength, and the tests were terminated due to the displacement stroke limitation of the actuator. Strain measurements clearly indicated an effective transition of the negative moment-resisting mechanism from flexural to catenary action at large deformations, causing the entire section to be subjected to tensile forces. The development of catenary action was the main reason for the high ductility observed in the specimens. The truss girders, although not spanning the entire width of the supporting beams, effectively enhanced the negative flexural strength of the composite slabs as their ends partially extended through the critical failure section. The effects of the truss girder were particularly notable in specimens supported by H-section beams, where the negative flexural strengths increased by about 10 –20%. Furthermore, diagonally bent integrity reinforcements, primarily introduced for ease of construction, were also found to effectively increase the negative flexural strength of the composite slabs by develo** tensile forces when diagonal cracks developed in concrete sections.
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References
Arrayago, I., Real, E., Mirambell, E., Marimon, F., & Ferrer, M. (2019). Experimental study on ferritic stainless steel trapezoidal decks for composite slabs in construction stage. Thin-Walled Structures, 134, 255–267.
ACI Committee 318. “Building code requirements for structural concrete (ACI 318–19) and commentary (ACI 318R-19).” American Concrete Institute, Farmington Hills, MI.
Bai, L., Hou, C., Zhou, T., & Cao, M. (2020). Longitudinal shear behaviour of composite slabs with profiled steel sheeting and ECC. Engineering Structures, 205, 110085.
Chen, S. (2003). Load carrying capacity of composite slabs with various end constraints. Journal of Constructional Steel Research, 59, 385–403.
KDS (2022). Reinforcements detailing design standards for concrete structures. Ministry of Land, Infrastructure and Transport, Seoul, Korea
Lawson, R. M., & Popo-Ola, S. (2013). Load capacity of continuous decking based on small-scale tests. Thin-Walled Structures, 69, 79–90.
Mistakidis, E. S., & Dimitriadis, K. G. (2008). Bending resistance of composite slabs made with thin-walled steel sheeting with indentations or embossments. Thin-Walled Structures, 46, 192–206.
Stylianidis, P. M., Nethercot, D. A., Izzuddin, B. A., & Elghazouli, A. Y. (2016). Study of the mechanics of progressive collapse with simplified beam models. Engineering Structures, 117, 287–304.
Yang, Y., Liu, R., Huo, X., Zhou, X., & Roeder, C. (2018). Static experimental on mechanical behavior of innovative flat steel plate-concrete composite slabs. International Journal of Steel Structures, 18, 473–485.
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The support provided by SHINHAN SNG Co. for this study is gratefully acknowledged.
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Jun, SC., Lee, CH., Bae, CJ. et al. Experimental Evaluation of Negative Flexural Capacity of Composite Slabs Embedded with Truss Girders. Int J Steel Struct 24, 644–657 (2024). https://doi.org/10.1007/s13296-024-00844-5
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DOI: https://doi.org/10.1007/s13296-024-00844-5