Vol. 21, No. 3, pp. 194-203 (2025)
STUDY ON SHEAR BEHAVIOR OF T-SHAPED SHEAR CONNECTORS
IN PREFABRICATED CONCRETE COMPOSITE FLOOR SLAB
Zeng-Mei Qiu *, Wen-Zhuang Pei, Guo-Chang Li and Zhi-Jian Yang
School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 28 November 2024; Revised: 27 December 2024; Accepted: 1 January 2025
DOI:10.18057/IJASC.2025.21.3.2
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ABSTRACT
This study proposed to apply T-shaped shear connectors to join prefabricated concrete slabs with H-beams and thereby ensure the overall working performance of building floor systems. The push-out tests on T-shaped connector specimens with different flange and web thicknesses were conducted aiming to investigate the shear behavior of this connector. Then the finite element software ABAQUS was used to establish test models, and the accuracy of the established models were verified according to the comparative experimental results to analyze the stress development process and key parameters influencing connector shear behavior. The results showed that the T-shaped connector with high initial stiffness and shear capacity, and its characteristic displacement complied with the lower limit value of permissible slip specified for the flexible shear connector in Eurocode 4, confirming its excellent ductility. The connector web thickness had the greatest effect on shear capacity, the second was the steel yield strength, whereas the connector width had the least influence. Finally, the recommended cross-sectional dimensions for the T-shaped connector were given, as well as the shear bearing capacity equation for this connector was derived, which could provide theoretical basis and design suggestions for its application in prefabricated concrete composite floor structure.
KEYWORDS
Prefabricated concrete composite floor slabs, Push-out test, T-shaped shear connector, Shear behavior, Finite element simulation
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