Analytical Methodology to Predict the Beam Overstrength Considering the Composite Slab Effects

Abstract:

The design strength of moment resisting steel frames in seismic regions around the world is generally calculated without considering strength enhancement caused by the slab. For column and panel zone design in New Zealand, the beam overstrength including the slab effect is considered. If the slab could be detailed to provide reliable lateral force resistance, then considering it directly in design would result in smaller beam sizes and more economical steel frames. In this paper, a simple analytical model (considering all key modes of failures) to predict the variation in strength due to the presence of the slab is proposed and validated with the experimental data. The proposed model to develop dependable slab contributions may change the design of steel moment frames around the world.

• Periodical: Key Engineering Materials (Volume 763)
• Pages: 826-834
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.763.826
• Online since: February 2018
• Authors: Tushar Chaudhari, Gregory A. MacRae, Des Bull, George Charles Clifton, Stephen Hicks
• Keywords: Composite Slabs, Earthquake Engineering, Moment Frame, Overstrength, Panel Zone, Structural Steel

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