How is a composite steel slab modeled?

Extended Question: We are modeling a steel slab supported by inverted T-beams that which are welded to the slabbottom. For design purposes the , beam properties should consider an upper flange of the slab. The frame steel design analysis should consider these beam propertiesthe slab as a top flange. If we assign these properties to the beam, how should we model is the steel slab modeled?

Answer: If you model the beam including the Once the beams are modeled to include portions of the slab as a top flange, then stiffness/property modifiers could may be assigned to the slab shell elements in objects along the beam direction to reduce the slab stiffness and weight of the slab, such that the top-flange is portions are not double-counted.

A sketch and overview is given as follows:

Image Modified

Figure 1 - Composite slab

See Also

• Composite Section Tutorialsection tutorial

Attachments

• Hand sketches (PDF File, 0.4MB)