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Axial stiffness of anchors

Posted by R Chungover 3 years ago
Axial stiffness of anchors

What are typical axial stiffness of mechanical and chemical anchors?

I am modelling a base plate connection in a structural analysis program, and want to assign a reasonable stiffness value to elastic springs supports which model Hilti anchors.

Anchor stiffness analysis/as-constructed,analysis
2 Replies
Posted by Ask HILTI Teamover 3 years ago

Thank you for your enquiry our Profis Engineering utilises testing form our different anchor products for the Spring support which is included in the back ground however we do not publish this data seperately.

1 comment on this reply
Posted by R Chungover 3 years ago
Hello, Beside using Profis Engineering in our analysis, I would like to do a separate analysis as an additional check to make sure my analysis is robust. The base plate I am designing is to be placed at the end of a strut which is to be loaded up to several thousands kN force in order to jack two bridge decks apart. Bridge webs are narrow and there is enough space to accommodate big anchor bolts and we hence we need some information of the anchor bolts. If exact axial stiffness cannot be revealled, I am wondering whether a range of stiffness is available.
Posted by Ask HILTI Teamover 3 years ago

Thanks for the follow up but we don't have that data available for commercial reasons as we are the only company that has the data . The only thing that is covered within a products ETA is the initial load displacement from the loading and the value at either 50 / 100 years (If applicable) . The PE software also provides the information within the output report.