Finite Element Analysis of Novel Stiffened Angle Shear Connectors at Ambient and Elevated Temperature

Karim Nouri (), Nor Hafizah Ramli Sulong, Zainah Ibrahim, Mohammad Bazzaz and H. Elhosiny Ali
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Karim Nouri: Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
Nor Hafizah Ramli Sulong: Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
Zainah Ibrahim: Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
Mohammad Bazzaz: Construction Engineering Department, Prosser a Prime AE Group, Inc. Company, Tampa, FL 33579, USA
H. Elhosiny Ali: Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia

Sustainability, 2022, vol. 15, issue 1, 1-31

Abstract: This is a numerical study to investigate the behavior of novel stiffened angle shear connectors embedded in solid concrete slabs at both ambient and elevated temperatures. An advanced nonlinear finite element model is developed and validated with available experimental work by Nouri, K., et al. 2021. Additionally, parametric studies are performed to evaluate the variations in concrete strength and the connector’s dimensions. The results indicate that the ultimate strength of the stiffened angle shear connector drops by 92% in 1050 °C. Comparing studies show the strength of the stiffened shear connector at 700–850 °C is equivalent to the ordinary C-shaped shear connectors. The stiffened shear connector is more ductile at elevated temperatures as compared to ambient temperatures. The shear strength raised to 66% and 159.7% by increasing the height and width of the stiffened shear connector, respectively. Furthermore, the height of the stiffened shear connector is crucial to enhance the shear strength capacity as compared to the ordinary C-shaped shear connector.

Keywords: stiffened shear connector; angle shear connector; C-shaped shear connector; composite beam; ambient temperature; elevated temperature (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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