Friction and gap elements for precast buildings

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Friction and gap elements for precast buildings

Post  Matt92 on Wed Mar 16, 2016 1:15 pm

Hi Everyone,

I'm currently modelling a precast concrete school building and am interested to see if anyone can help me out with two aspects of element modelling.

The first is modelling the bearing surface between the beams and columns. There is no physical connection and lateral resistance is provided by friction only. I've currently modelled this using an elasto-perfectly-plastic spring with a very high initial stiffness. Is there another element that would be better suited to this task (it is assumed the bearing force is constant)?

The second is modelling the beam end to column face gap. At this stage I have used a spring with IHYST = 63 with large values of Ko and Fy. Again I would be interested to know if there is a better way to do this.



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