I am interested how to check a nominally pined joint. Especially how to check its rotational capacity and whether i can define it as nominally pinned in structural fem model. I understand that there are criteria for nominally p. Joints but also there is a criterium that this joint must have enough of rotational capacity to accept rotation of the member.

I give an example.

Lets say i designed a nominally pinned joint according to eurocode criteria. Ran a calculation and got design forces. (shear force and maybe axial force). Joint satisfied all code checks but now i want to if this joint has rotational capacity to accept members end rotation (also calculated).

I know that there certain amount of estimation and engineering experience. But i would like to know what would do an experienced engineer when designing a joint that has stiffness somewhere between pinned and semirigid. And dont want to define it as semirigid in structural calculation.

Thank you

  • $\begingroup$ It should always be assumed that the "worst case" loading will be experienced. If this element were assumed to be fully pinned (no moment transfer) would that result in a safer design than a fully fixed condition? In the real world, we cannot always tell if a foundation is actually rigid, so assume otherwise. Paper engineering is no substitute for experience. $\endgroup$ – Donald Gibson Nov 19 '17 at 0:01
  • $\begingroup$ I understand that for member check is usually safer to consider joints as pinned. But i am wondering how to check this pinned connection. Especially how to check its rotational capacity and if this is an appropriate approach. $\endgroup$ – Tomas L Nov 20 '17 at 15:23

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