Local Elasto-Plastic Behavior of Steel Beam to Concrete-Filled Square Steel Tube Column Moment Connections

Abstract

2) 4) 5) 6) 8CFT This paper proposes a simple model of a load-displacement relation for predicting the local tensile elasto-plastic behavior of moment �������������������������������������������������������������������������������������������������������������������������������������������� type bolts. This model is developed by superposing the load-deformation relations of steel tube, these bolts and split-tees in the connections. ������������������������������������������������������������������������������������������������������������������������������������������ are modeled as tension members with tetra-linear or tri-linear load-deformation relation. This research verifies the analytical model by comparison with experiment results. The analytical results approximately reproduce the experimental results up to large deformations.

Experimental and finite element study on the single-layer reticulated composite joints

“…According to the reference by Fukumoto and Morita (2000), the multilinear model was used to describe the constitutive relationship of the steel material in the finite element model: ε a = f y / E s , ε b = ( f u − f y ) /0.1 E s , and ε c = 0.12, where ε a , ε b , and ε c are the corresponding strains (Figure 11). Poisson’s ratio of the steel is 0.3.…”

Cyclic Loading Test for Beam-to-Column Connections of Concrete Encased CFT Column

“…보 단부에서 Table 4. Ultimate tensile strengths of connection (Fukumoto [9] ) Design formulas Note 의 보수적인 대안이 될 수 있다 [3] .…”

Experimental Investigation of Composite Moment Connections with External Stiffeners

“…The connection between the beam and column is one of the main areas where potential cost saving can be achieved. Due to the need for practical application, numerous research works for connections with CFT columns have been carried out as follows: investigation of the performance of CFT column-to-H beam connections with vertical stiffener plates (Matsuda et al 2000;Kimura et al 2005); investigation of the connection details and shear strength in the panel zone of CFT through beam connections (Fukumoto and Morita 2000;Cheng and Chung 2003;Azizinamini 2005); the US-Japan cooperative earthquake research program (Fujimoto et al 1997;Azizinamini and Schneider 2004;Ricles et al 2004;Nishiyama et al 2004) ); and investigation of the seismic performance of bidirectional bolted beamto-column connections for CFTs (Wu et al 2007). Giroux and Picard (1977) suggested rigid frame connections for tubular columns using strap angles.…”