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Illogical reinforcement results in column

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Message 1 of 3
Romanich
312 Views, 2 Replies

Illogical reinforcement results in column

Hello friends,

I have two identical columns with same loads and with equal results, e.g. bending moment and axial force.

Difference only in longitudinal reinforcement: in first column A500 with characteristic strength 500 MPa, in second A400 with 400 MPa.

But I have strange results of theoretical reinforcement area according to SNiP 2.03.01-84. Please, see the screenshot:

column_A500.png

 

 

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Roman Zhelezniak

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2 REPLIES 2
Message 2 of 3
Artur.Kosakowski
in reply to: Romanich

I will try to check next week. As the labels K1_A400 and  500 for some reason are not defined are not present in the file I created the similar ones and made the test. The results I get for compression are as in your case but when I change the axial force to tension I have more reinforcement for weaker steel. I need to find out what additional SNIP provisions for compression are first.



Artur Kosakowski
Message 3 of 3

The initial check I made indicates that reinforcement database for new Russian code (SP-52) is not fully compatible with the older design code. Using the SNIP2 reinforcement database instead of SP-52 and making test for A-III and A-IV steel grades I get the results as expected (less reinforcement for stronger steel).

 

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Artur Kosakowski

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