topic Re: Simple support slab in Robot Structural Analysis Forum

Simple support slab

m_sheinin — Thu, 26 Apr 2018 20:45:07 GMT

Hello All,

I hope you can help me. I modeled simple support slab with linear supports.

But results I'm receiving very strange, I hope you can help me to solve.

I am receiving increased reaction at slab edges from the uniform load case.

Slab Reaction

Thanks in advance

Re: Simple support slab

Artur.Kosakowski — Thu, 26 Apr 2018 22:06:15 GMT

Hi @m_sheinin

The Mxy moment causes the slab corners to be uplifted which results in the larger reactions in these locations. It is why you need to provide top reinforcement in these areas.

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Re: Simple support slab

m_sheinin — Fri, 27 Apr 2018 13:52:20 GMT

Hi Arthur,

Thank you for your reply. I found the explanation for my question.

If I understand correctly when I'm showing diagram the way software calculate values is taking reaction from the nearest node and divide it by arbitrary area of the node. Therefore for the edges, you see high peaks because the area is half of the edge node.

Point Reaction

Diagram

The side of the element is 038m so for the edge you get 2.51 / 0.38 / 2 = > 13.21 kN/m it's close to the Robot result.

Please confirm.

Thanks

Re: Simple support slab

Artur.Kosakowski — Fri, 27 Apr 2018 14:06:22 GMT

Hi @m_sheinin

This is correct.

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