When I use slab modeling with plate and meshing the plate element it creates many nodes on beams on which slab rests and in this manner beams converted in many short span beams and Bending moment results much different. What should I do so that beams supporting meshed plate analysed an single beam between supporting columns?
Hello,
If you meshed a plate which is connected to the beam will divide the beam in many parts. But, it should not affect the bending moment much. When a plate is meshed and beam is connected through different nodal points, load is transferred from plate as series of nodal load to the beam at connected points. So, the difference in result should not be there. If you are seeing any such difference please send us the staad file along with references/screen shots so that we can investigate. Also, in postprocessing you will find the total bending moment diagram for whole beam.
Adding to what Abhisek mentioned, although the beam is split into segments to ensure connectivity, it is still a continuous member as far as the analysis is concerned.
Hi Sye,
Once I have meshed plates the beams break up into smaller ones, some of the utilisations are over one and fail but others are under one and pass on what should be the same beam.
It is almost like they are being analysed separately is there any solution to this?
Cheers
Carl
When beams are broken up you need to appropriately assign design parameters ( like LY LZ UNT UNB DJ1 DJ2 etc. ). Otherwise STAAD.Pro would just design based on default values for these parameters and your utilization ratios would change.
Please, I would like to follow-up on this question. I have attached two models. One was modeled with plates and the other without plates. I am seeing a very significant reduction in the beam moments which is getting me worried. The difference in beam moment is more than half. Kindly assist in explaining. An which should be more accurate? would modeling without plates be too conservative?Solid Slab & Beam Design Final.STDSolid Slab Final.STD