Abstract: A new type of through high strength bolts-end plate connection for concrete filled square steel tube column and steel beams is proposed. A total of 3 pseudo-static experiments has been conducted in which the horizontal cyclic load is applied on the top of the column. The nonlinear finite element models involving geometric, material and contact nonlinearities are presented using 3D solid elements. The ANSYS finite element package is used to simulate the nonlinear behavior of the experimental specimens under the monotone and cyclic loading. The results obtained from the finite element and the experiments show that the connections have ex cellent strength, stiffness, ductility and energy dissipation capacity.