Reference Type:  Journal Article
Record Number: 1
Author: Zhou, T., Xu, M. Y., Chen, Z. H., Wang, X. D. and Wang, Y. W.
Year: 2015
Title: Eccentric loading behavior of l-shaped columns composed of concrete-filled steel tubes
Journal: Advanced Steel Construction
Volume: 12
Issue: 3
Pages: 18
Start Page: 227
Short Title: Eccentric loading behavior of l-shaped columns composed of concrete-filled steel tubes
DOI: 10.18057/IJASC.2016.12.3.2
Keywords: L-shaped column, concrete-filled steel tube, composite columns, biaxial loading test,finite element analysis, calculating formula
Abstract: Concrete special-shaped columns have been studied and used in China for twentyyears, and can be incorporated into walls to widen indoor areas. However, concretespecial-shaped columns do not perform well under seismic action. In addition, special-shapedconcrete-filled steel tubular columns were put forward and researched as well because of theirhigh strength and ductility, but theinteraction between steel and inner concrete is small. Tie rodsare often set to solve the problem, which in turn affect the architectural appearance. To solve theabove problems, a special-shaped column composed of concrete-filled steel tubes (SCFT) wasproposed and studied. Axial loading behavior, seismic behavior, and whole structure behaviorwere studied. This type of special-shaped column has been used in residential buildings, and thestructural behavior performed well. This paper experimentally investigated the biaxial loadingbehavior of L-shaped SCFT columns. Failure modes, cooperation of mono-columns, and theeffects of eccentric angle and distance on column behavior were studied. Test results werecompared with those of finite element analysis. A reasonable simplified calculating formula wasproposed based on the study and was proved effectively through the comparison with test results.Mono-columns of SCFT columns proved to work well together. This kind of special-shapedcolumn proved to be a good structure type.
Author Address: Associate Professor, School of Civil Engineering, Tianjin University, China