To study the effects of different connection methods on the performances of the U-shaped steel composite beam and the double steel plate composite wall joints, three groups of six joint specimens were designed and manufactured. The pseudo static tests loading at the beam end were conducted. The failure mode, load, displacement, and strain of the specimens were analyzed. The results show that all of the failure locations of the specimens are the beam ends, and the composite walls are undamaged. Under positive loading, the cracks of steel plates cause the reduction of the bearing capacity and ductility, and the ductility coefficients are 1.56 to 2.12. Under negative loading, the ductility coefficients are 2.55 to 2.79 without the effects of steel plate cracking. The minimum of the strength degradation coefficients of 6 specimen is 0.7. Under positive and negative loading, 94% and 97% of composite beam steel webs reach yield strength, respectively. With the sectional plasticity method, the ratios of the experimental results and the theoretical results of the bearing capacity are 0.88 to 1.08. The six joints can effectively connect the composite beams and the composite walls. After the U-shaped connecting plate is adopted, the damage positions are moved outwards, which can protect the walls with a better way. © 2023 Southeast University. All rights reserved.
