Experimental study of slip in haunched gusset plate for cold formed steel connections

Abstract

Gusset plates for beam-to-column joints are the most common bolted connection solution. CFS beam column connections such as gusset plates can be developed in CFS double back-to-back channel sections with relatively high moment resistance. In this paper will investigated the failure mode of the slip-in connection CFS using haunched gusset plate that has 10 mm of thickness that occurs as a result of testing isolated joint tests and to compare the results of stiffness and strength between previous researchers with another type of gusset plate. The value of moment resistance (Mj) of the beam section C20024, C25024 and C30024 were 35.5 kNm, 41.65 kNm and 46.3 kNm respectively. The value of rotational stiffness (Sj,exp) of the beam section C20024, C25024 and C30024 were 520 kNm/rad, 590 kNm/rad and 610 kNm/rad respectively. The increase and decrease in moment capacity values and initial stiffness for the gusset plate connection are influenced by the thickness or shape of the gusset plate and the beam size.