Techno Press
Techno Press

Steel and Composite Structures
  Volume 42, Number 3, February 2022 , pages 315-323
DOI: https://doi.org/10.12989/scs.2022.42.3.315
 


Push out tests on various shear connectors used for cold-formed steel composite beam
Senthilkumar Rajendran, Jayabalan Perumalsamy and Divya Mohanraj

 
Abstract
    Shear connectors are key elements that ensure integrity in a composite system. The primary purpose of a shear connector is to bring a high degree of interaction between composite elements. A wide variety of connectors are available for hot-rolled composite construction, connected to the beam through welding. However, with cold-formed members being very thin, welding of shear connectors is not desirable in cold-formed composite constructions. Shear connectors for cold-formed elements are limited in studies as well as in the market. Hence in this study, three different types of shear connectors, namely, single-channel, double channel, and self–tapping screw, were considered, and their performance assessed by the Push-out test as per Eurocode 4. The connection between channel shear connectors and the beam was made using self-tapping screws to avoid welding. The performance of the connectors was analyzed based on their ultimate capacity, characteristic capacity, ductility, and slippage during loading. Strength to weight ratio was also carried out to understand the proposed connectors' suitability for conventional ones. The results showed relatively higher initial stiffness and ductility for double channel connectors than other connectors. Also, self-tapping screws had a higher strength to weight ratio with low ductility.
 
Key Words
    channel connector; cold-formed composite beam; push-out test; shear connectors
 
Address
Senthilkumar Rajendran:Department of Civil Engineering, National Institute of Technology Tiruchirappalli, Tiruchirappalli, Tamil Nadu-620015

Jayabalan Perumalsamy:Department of Civil Engineering, National Institute of Technology Tiruchirappalli, Tiruchirappalli, Tamil Nadu-620015

Divya Mohanraj:Department of Civil Engineering, National Institute of Technology Tiruchirappalli, Tiruchirappalli, Tamil Nadu-620015
 

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