Finite Element Analysis of the Influence of Steel Strength on Beam-to-column Composite Connections
SHI Yong jiu,AO Xiao lei,WANG Yuan qing and SHI Gang
DOI:10.11835/j.issn.1674-4764.2008.05.007
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2008,Pages 32-36
- Abstract
Because high material strength and composite load-bearing are emphasized in constructing members for high-rise steel frame structures, in a composite connection, steel strength has a dramatic influence on both the bearing performance and the composite action of the concrete slab. Based on a finite element analysis, we discuss the composite effect and the connection breaking mode, focusing on the performance change of the composite effect in adopting high strength steel. It can be found from the results that, along with the improvement of the steel strength, the elastic and plastic ultimate strength of the composite connection will increase, the ductility will decrease to a certain extent, and the composite effect of the concrete slab will diminish. The collapse of the concrete in a positive moment side contacting the column flange is viewed as the limiting state of the connection.