Posted by CivilEng_EBalmost 4 years ago
Pry-out verification - derivation of shear force eccentricity
I am checking an anchor group against pry out failure mode. I am unsure as to how Hilti PROFIS calculates the eccentricity of the shear forces in the anchors? I thought the method was analogous to the derivation of the position of the resultant tensile force, but I don't think that is the case.
The figures I'm interested in are ec1,v and ec2,v in page 7 of the attached example.
Many thanks.
1 Reply
Posted by CivilEng_EBalmost 4 years ago
Never mind. Just re-calculated and obtained the same result.
In case anybody's interested:
- calculate the position of the X component of shear in Y direction
- calculate the position of the Y component of shear in X direction
- based on the above, calculate moment about the centroid of bolt group and divide by the resultant shear. You obtain the radial distance to the resultant shear.
- Decompose distance into X and Y. You now have eccentricity in X and Y.
Cheers.