4. Conclusion
The issue of anchor stiffness arises at every stage of the design process. In particular, overestimating anchor stiffness can lead to both "global" and "local" undersizing:
overall behavior: there is a risk of underestimating the actual deformations of the overall structure (e.g. portal frame), as well as possible disruption to the estimation of torsorsors at the anchorages;
local behavior: there is a risk of underestimating the tensile and compressive forces at play in the anchors themselves. In fact, insufficient anchor rigidity leads to increased tensile forces in the anchor rods, due to the appearance of additional physical phenomena, such as the lever effect.
This article describes two methods for calculating anchor rigidity: the component method of Eurocode 3 (EN 1993-1-8)...
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Conclusion
Bibliography
Software tools
HILTI PROFIS, calculation software for anchor bolts and plates
Standards and norms
- Eurocode, Eurocode 2 : Design of concrete structures – Part 4: Design of fastenings for use in concrete - EN 1992-4 - juillet 2018
- Eurocode, Eurocode 3: Design of steel structures – Part 1-8: Design of joints - EN 1993-1-8 - mai 2005
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