Behaviour of Stud Shear Connectors in Composite Beams: A Push-Out Test Approach

Authors

  • Penuka Vikram
  • S. Bhoomesh
  • B. Sudharshan Reddy

Keywords:

Composite beams, shear connectors, push-out tests, load-slip behavior, interface bond, stud failure, concrete strength

Abstract

The efficiency of composite beam systems heavily relies on the strength and ductility of shear connectors. This study investigates the mechanical performance of headed stud shear connectors through 42 push-out tests designed to evaluate their load-slip characteristics. Various parameters were considered including connector type, concrete strength, sheet thickness, and stud arrangement. The tests were performed using a 1000 kN Universal Testing Machine (UTM) with precise instrumentation for load and slip measurements. Results indicate a direct relationship between concrete grade and connector stiffness, while failure modes varied from stud shearing to concrete crushing. A three-stage load-slip behavior was identified, offering insights into the progressive damage and eventual failure of the interface bond. The findings support optimized connector design in composite structures for enhanced structural integrity.

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References

Eurocode 4: Design of Composite Steel and Concrete Structures.

Johnson, R.P. (2004). Composite Structures of Steel and Concrete.

Ollgaard, J.G., Slutter, R.G., and Fisher, J.W. (1971). Shear strength of stud connectors in lightweight and normal-weight concrete. Journal of the Structural Division, ASCE.

SCI P405. Design of composite slabs with steel decking: Best practice for design and construction.

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Published

2025-06-09

How to Cite

1.
Vikram P, Bhoomesh S, Reddy BS. Behaviour of Stud Shear Connectors in Composite Beams: A Push-Out Test Approach. J Neonatal Surg [Internet]. 2025Jun.9 [cited 2025Jun.20];14(31S):507-10. Available from: https://jneonatalsurg.com/index.php/jns/article/view/7202

Issue

Vol. 14 No. 31S (2025): Journal of Neonatal Surgery

Section

Original Article

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