I am trying to model a bridge in STAAD Pro and I am having difficulty.
4 Span Continuous Unit (201' 260' 260' 201') - with 4 Structural Steel Plate Girders, with a composite concrete slab with overhangs on top. (39'-3" wide, beams spaces at 10'-0")
Basically I am trying to add a point load in various places across the length and width to determine how it distributes through the slab to the beams. (both moment dist and support reactions)
I have attached 2 models that I have developed to this point. One has the slab, beams, and a small support positioned such that they rest on one another. The other model has all elements at the same elevation.
I do not believe that either of these models are analyzing the structure accurately, and I cannot figure out how to put a composite slab on these beams.
Any help on putting a composite slab on these beams that would accurately model the distribution would be very helpful.
Please check this Wiki post which explains how to model a slab on top of the beam: https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/23459/modeling-slab-on-top-of-beams-in-staad-pro
Instead of using master/slave command to connect the nodes of the meshed plate and beam, you may create a member with a very rigid and small density material to connect these nodes.