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2024-05-30

Prying Effect in Base Plate Steel Connections

🔩 Prying Effect in Base Plate Steel Connections

📚 The flexibility of the base plate can lead to deformations that increase the tension applied to the anchors. The base plate corners can become compressed against the concrete, inducing additional prying forces, which, in turn, lead to an increase in the tensile force in the anchors.

💡 A key factor influencing the magnitude of prying forces is the thickness of the base plate. A thicker base plate can significantly reduce the prying effect, contributing to a more efficient connection design.

In the example 👇, the relationship between base plate thickness and the prying effect is graphically presented 📊. The prying factor is considered as the ratio of the total tensile forces in all anchors to the applied load. For selected thicknesses, the contact stress in the compressed base plate corners is also shown.