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Turkish In the tribune project I have uploaded in the appendix, I cannot save the deflection of the roof beams in any way, there are very abnormal sections. Also, is it normal that the tension beams that I attached from the column to the carrier beams have no effect in terms of deflection? Thanks
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Tribune project section deficiencies
- Thread starter umutyen
- Start date
In your model, you have considered the roof live load (Qr) as 0.2t/m². However, the software currently treats this as normal live load (Q) loading and in combination with snow load (S). However, the roof live load should not be combined with the snow load in the same load combination. For this type of roof, 0.2t/m² roof live load is too much and unnecessary. Roof live load does not need to be included in the effective weight of the building in an earthquake, but as it is considered as normal live load, 30% of it currently does. It may be appropriate to determine the snow load or the roof live load, which gives the most negative result, and to consider only one in the design. When all these are evaluated, my advice on this subject is to cancel the roof live load and increase the snow load from 0.075t/m² to 0.1t/m² and continue. In addition, since wind load is an important design input in such structures, it would be appropriate to consider its calculations within the framework of TS EN 1991-1-4 Article 7.3.
nurgulkaya
New Member
Hello there; We would like to thank Mr. Tolga for his technical guidance. Apart from the technical situation, you have modeling errors. After the analysis, you should definitely examine the building behavior instead of looking at all the inadequacies directly. If you look at the deformations, your period appears to be 65 seconds. The reason is that the ends of your steel beams connected to the reinforced concrete column were left empty and entered the mathematical model as a cantilever element. To correct this modeling error, I turned off the advanced capture and closest point capture features and made the concrete column and steel beam working points the same. In your next model, please check these conditions first. Your lovers are one piece, use the divide by all intersections command. In order to improve the more economical design and building behavior, you need to increase the horizontal braces and reduce the retained length by making the purlins come to the starting, ending and midpoints of the braces. The same is true for your lovers. It is useful to use a tension rod. I made these edits in your model. It will set an example for your other projects.