ABSTRACT
CFST connections are similar to unfilled tubular connections described, for
example, in Syam and Chapman (1996), Packer and Henderson (1997) and
Kurobane et al. (2004). The differences caused by concrete-filling in connection
design include increased strength, stiffness and ductility of CFST members which
may lead to the change of certain failure modes, bond between steel and concrete.
Extensive research has been conducted on CFST connections, especially those
connecting steel beams to CFST columns subjected to seismic loading. The special
characteristics include using external diaphragm, through diaphragm, internal
diaphragm (e.g. Choi et al. 1995, Alostaz and Schneider 1996, Fu et al. 1998,
Schneider and Alostaz 1998, Cheng et al. 2000, Beutel et al. 2002, Azizinamini
and Schneider 2004, Nishiyama et al. 2004, Park et al. 2005, Choi et al. 2006),
wider flange beam (Ricles et al. 2004), external T-stiffners (Lee et al. 1993), blind
bolts (Gardner and Goldsworthy 2005, Loh et al. 2006a, 2006b, Yao et al. 2008,
Wang et al. 2009a, 2009b), and reduced beam section connection (Park et al. 2008,
Wang et al. 2008).
