The objective of this study is to categorize the failure modes; moment and rotation capacities; ductility; stiffness; joint classification; strain behaviour; and load transfer mechanism of steel beam through CFST column connections. Eight one-third scale composite joints were tested under static load up to failure. The key parameters comprise two η_Strength ratios; the effect of beam flange and web continuity inside the connection zone; and full cross-section continuity of steel beam. Moreover, the contribution of the connection component to the overall capacity of composite joints was determined. Results indicated that through beam connection could provide an ideal rigid joint. The absence of beam flange and the discontinuity of full beam cross-section made the connection component highly susceptible to fracture. In contrast, the presence of these details leads to higher ductile behaviour and prevent joint failure. The flange contribution to the moment and rotation capacities is significant, contrarily to the web contribution, which is negligible in value. The flange contribution to ductility coefficient is more dominated compared to web contribution. When strong column-weak beam criteria are followed, the continuity contribution to initial stiffness is more dominated. In contrast, the specimens that follow the weak column-strong beam criterion, the flange contribution to the initial stiffness has the major effect.

本研究的目的是对失效模式进行分类。力矩和旋转能力；延展性 刚性; 联合分类 应变行为 CFST柱连接的钢梁荷载传递机制。在静态载荷下测试了八个三分之一比例的复合材料接头直至失效。关键参数包括两个η_强度比率; 连接区域内梁翼缘和腹板连续性的影响；钢梁的完整横截面连续性。此外，确定了连接组件对复合材料接头整体能力的贡献。结果表明，通过梁连接可以提供理想的刚性接头。由于没有梁翼缘和整个梁截面的不连续性，使得连接部件极易断裂。相反，这些细节的存在导致较高的延展性并防止关节衰竭。法兰对力矩和旋转能力的贡献很大，与腹板的贡献相反，腹板的价值可忽略不计。与腹板的贡献相比，法兰对延性系数的贡献更大。当遵循强的柱弱梁准则时，对初始刚度的连续性贡献更为主要。相反，遵循弱柱强梁准则的试样，凸缘对初始刚度的影响最大。