Finite Element Analysis of Widen Flange Section Steel Frame 

Hui Ma 

School of Architecture Engineering, Binzhou University, Binzhou, 256600, China

Abstract: This electronic document is a “live” template. The various components of your paper [title, text, heads, etc.] are already defined on the style sheet, as illustrated by the portions given in this document. (Ab-stract) Widespread and unpredicted brittle fractures have been found in weld steel beam-column connections (weld-flange-bolted-web connections) of steel frames shaken during the Northridge earthquake and the Kobe earthquake. Such fractures were most often initiated at the bottom flange weld and propagated into the column flange and the beam web. The post-earthquake studies have shown that the traditional seismic behavior of beam-column connections is not good becauseof the brittle failure prevents the welded moment connections from exhibiting the inelastic behavior expected. Extensive experimentally and numerically studies were therefore conducted to the improved beam-column connections in the worldwide.The beam-to-column connection with beam-end horizontal haunch is a kind of reinforced beam-to-column which is one of the typical forms to move plastic hinge outward from the beam and column interface connections. By widening beam flanges, the plastic hinge will form the welds that have much fracture proneness due to stress concentration and welding sensitivity, reducing the damage of brittle fracture of connections and improving the ductility of the structure.

Keywords: Widen flange section; Sductility coefficient; Plastic hinge