Experimental and numerical study of an innovative OMEGA-shaped connector for composite beams

Tabet-Derraz, M. Idriss; Khelil, A.; Hamdaoui, Karim; Boumechra, Nadir; Abdallah, Mohammad

doi:10.1016/j.istruc.2021.02.050

Cited by 9 publications

(2 citation statements)

References 23 publications

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“…Shear connections are used in composite beams to withstand shear, bending, and tensile forces. As a result, shape, shearing area, and inertia are the most important factors to consider while ensuring the connection (Tabet-Derraz et al [12]). Several categories of shear connectors have undergone a great deal of development and study over the last few decades (Pardeshi and Patil [13]).…”

Section: Cps-shaped Stud Shear Connectormentioning

confidence: 99%

“…For CPS-2 nd , 𝑄 = 9.70𝑑 𝑏 ℎ√𝑓 𝑐𝑚 (12) For CPS-3 rd , 𝑄 = 9.91𝑑 𝑏 ℎ√𝑓 𝑐𝑚 (13) Here, Q is the shear capacity of the connector, db is the large bottom diameter of CPS-shaped stud, h is the height of the connector, and fcm be the cylindrical compressive strength of concrete. Verification of the newly presented equations (Eq.…”

Section: Tablementioning

confidence: 99%

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Performance Evaluation of Innovative Coconut Palm Stem Shaped Stud Shear Connector for Composite Structures

2022

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Headed studs are the more frequently employable shear connectors in composite structures. Despite its prevalence, this connector has exhibited remarkable drawbacks, prominently the shear failure at the bottom of the shank. In this research, three novel coconut palm stem (CPS) shaped studs are proposed for composite constructions, aiming to improve the shear capacity and slip performance of the connection. The traditional circular headed stud (CHS) geometry has been restructured to a proposed CPS-shaped stud while maintaining total steel material volume to be the same. Pushout tests were experimentally performed on CHS and CPS-shaped shear connectors to investigate their performance evaluation for ultimate strength, stiffness, ductility, and failure mode. Moreover, the Abaqus/Explicit has been employed to model a pushout specimen. A proposed finite element model was successfully validated with the test results for further parametric analysis. Two distinct grades of concrete and three CPS shapes were considered for the parametric investigation. Finally, three formulas were developed and proposed to predict the shear capacity of the CPS-shaped stud. The performance of the CHS and CPS-shaped stud connections was compared, revealing that the proposed CPS-shaped studs offer 37 to 47% higher shear strength, double stiffness, and slip with better ductility. So, CPS-shaped stud may substitute the traditional headed stud shear connectors in steel-concrete composite structures with added strength, stiffness, and ductility.

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Section: Cps-shaped Stud Shear Connectormentioning

confidence: 99%

Section: Tablementioning

confidence: 99%