While discussing steel-to-concrete connections with the team leader, he mentioned shear studs during the conversation.
What is a shear stud :
A shear stud is a fastener which provides structural connection between concrete slabs and steel support beams. It is typically a steel pin or grommet that extends out of the top flange of a steel beam. They are typically made of steel.
How does it work :
- After the metal decking is installed over the structural steel, a spot welder is used to weld the shear studs onto the steel beam. These studs are typically evenly spaced along the beam.
- Once the shear studs are in place, a concrete slab is poured onto the steel beam. The concrete flows over the metal decking and surrounds the shear studs, covering them.
- As the concrete hardens, it adheres to the shear studs. But it’s not just the concrete holding onto the studs; the studs also grip the concrete. This grip is due to friction. They ensure that the steel beam and the concrete slab act together as one robust unit. The rough surface of the shear studs creates friction with the concrete, making it difficult for the concrete to slide off the studs.
- When a force, such as wind pushing on the building or people walking on the floor, exerts pressure on the steel beam, the studs transfer this force back to the concrete slab through frictional resistance.
Shear studs are commonly used in :
- Composite Steel Construction
- High-Rise Buildings
- Bridges and infrastructure projects
- Infrastructure rehabilitation projects
Sources :
smdltd.co.uk
www.shearstudwelding.com
help.scia.net
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