beamless flooring

[yakubu]

1-There is a structure that I want to calculate with beamless flooring. I also analyzed the structure with and without beams (V6.2007). earthquake loads, modes and periods are very different. I wonder; Can V6.52 make the earthquake calculation of the non-beam slab structure correctly? If not, I want help from my friends who have made the closest solution (modeling) to the truth so far. Please... 2- Also; How can we assign the fixed and live loads distributed on the beamless floor to different places (same loads are taken on all floors) or is it possible? Idestatic program is rapidly progressing towards becoming a very successful software day by day. I would like to thank Mr. idecad officials and wish everyone success in their work.

 

[HakanŞahin]

It is normal for earthquake loads, modes and periods to be different in your models. The two models you are considering are not the same or you are making different models than you thought. When modeling non-beam slabs in the program, you need to consider two aspects. 1. Analysis of non-beam slab as a shell with finite elements. (slab analysis) 2. Solving the behavior of non-beam slab under an earthquake with an idealized model. (frame analysis) In the first one, the system you describe as beamless slab is used as data input. When you place a plate in an area surrounded by slab edges and analyze it, you will analyze the plate under vertical loads. For the second, you need to build a model with flat beams to connect the columns. You can choose their size as the header and opening strips described in the TS500. In this model, your second question about loads is also answered. You can enter a different load in each eye. Manually change the inertia of the flat beams to the inertia of the rectangular section as well. This topic has also been discussed by our other forum participants. You can read if you want.

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