Hi Guys,
I had problems with presenting vertical tension force in the core walls .
I had done the analysis with 2015,2016, and 2017 Robot version but still the same these forces not appear when I present them by result map.
The model is nonelinear analysis and its very complicated .
Bets Regards
https://drive.google.com/open?id=0B-IpyO3EljSaUnhteFlHMy0wWDg
Could you attach a screen capture that shows what to look at (which load case, which panel, what sort of results exactly etc.) and what you consider as incorrect please? Thank you.
Dear Artur,
The model is attached in previous post.and this the replies on your Questions
1- for load Case is all cases no shown the vertical tension in the core walls.
2-For the panel: mostly the core walls and walls.
3-the stiffness of vertical elements and slabe is reduced.
4-P - Delta is considered in the analysis.
5- The most result not shown is Tension forces on the vertical walls and core walls .
Thank you for the pictures as they clarified the situation for me. Looking at them I assume that you expect to see some in-plane tension forces calculated according to Wood and Armer (W&A) method in the direction of the global Z axis. When I checked the components I think that the zero values are actually correct.
If you display Nxx forces for the panel you indicated for case 13 you can see that all the values are negative (compression). If you look at Nxy you can see that there is some tension but smaller than the Nxx compression in the same locations. As W&A Nxx force is just the sum of these components you will have negative values which means zeros for axial force for tension reinforcement calculations. You can see this if you check the table results as well. In addition when you check the Nxx W&A for compression you can see that the values (which include Nxy) are larger than these for Nxx.
I hope this helps.
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Dear Artur,
Thanks for your feedback. I have another probelems that all of these walls which is not have vertical temnsion forces the required reinforcement for this walls show as Zero for vertical reinforcement .
Thanks
Dear Mustafa,
Looking at the results it seems that for the 400 mm thick wall in-plane compression force is small enough to be transferred via concrete resistance only and as you demanded minimal reinforcement for As > 0 there is no map of the required reinforcement displayed as it is not needed.
When I set the minimal reinforcement to be assumed for the whole panel and then after calculating the reinforcement again the map was displayed as shown on the attached picture.
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