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Finite Element Analysis of Push-Out Test for Rebar Shear Connectors
Steel–concrete composite beams have been widely acknowledged as a highly cost-effective structural solution for multi-storey steel buildings and steel bridges. This paper investigates the behaviour of rebar shear connector embedded in solid concrete slab in composite floor system. A nonlinear 3D finite element model was developed to simulate the push-out test on rebar shear connector, which is a standard test used to determine the shear behaviour of connectors used in composite construction. The shear strength capacity of rebar shear connector obtained from the numerical analysis was compared to the experimental results. A total of eleven push-out test specimens were modelled. The mean value of PFEM/PEXP was found to be 1.0 with a standard deviation of 0.12. The finite element model was also able to simulate experimental failure behaviour of rebar connectors in push-out tests. The simulation models incorporating smaller diameter connectors (10 and 12 mm) exhibited failure primarily due to shearing of the rebar connectors. In contrast, the failure of models featuring 16 and 20 mm diameter rebar connectors was initiated by concrete cracking, subsequently leading to either concrete crushing or connector shearing. The numerical model was also capable of predicting the effect of rebar diameter and concrete strength in shear capacity of rebar connectors as observed in the push-out experiment. The model confirmed that shear resistance increases with larger diameter rebar and higher concrete strength.
Finite Element Analysis of Push-Out Test for Rebar Shear Connectors
Steel–concrete composite beams have been widely acknowledged as a highly cost-effective structural solution for multi-storey steel buildings and steel bridges. This paper investigates the behaviour of rebar shear connector embedded in solid concrete slab in composite floor system. A nonlinear 3D finite element model was developed to simulate the push-out test on rebar shear connector, which is a standard test used to determine the shear behaviour of connectors used in composite construction. The shear strength capacity of rebar shear connector obtained from the numerical analysis was compared to the experimental results. A total of eleven push-out test specimens were modelled. The mean value of PFEM/PEXP was found to be 1.0 with a standard deviation of 0.12. The finite element model was also able to simulate experimental failure behaviour of rebar connectors in push-out tests. The simulation models incorporating smaller diameter connectors (10 and 12 mm) exhibited failure primarily due to shearing of the rebar connectors. In contrast, the failure of models featuring 16 and 20 mm diameter rebar connectors was initiated by concrete cracking, subsequently leading to either concrete crushing or connector shearing. The numerical model was also capable of predicting the effect of rebar diameter and concrete strength in shear capacity of rebar connectors as observed in the push-out experiment. The model confirmed that shear resistance increases with larger diameter rebar and higher concrete strength.
Finite Element Analysis of Push-Out Test for Rebar Shear Connectors
Lecture Notes in Civil Engineering
Alam, M. Shahria (editor) / Hasan, G. M. Jahid (editor) / Billah, A. H. M. Muntasir (editor) / Islam, Kamrul (editor) / Sen, Delphian Dip (author) / Begum, Mahbuba (author)
International Conference on Advances in Civil Infrastructure and Construction Materials ; 2023 ; Dhaka, Bangladesh
2024-08-31
9 pages
Article/Chapter (Book)
Electronic Resource
English
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