The bolted angle connections which are simple, fast, cost-effective, high quality, and no site welding have been recognized as their excellent performance. The moment-rotation behavior of both major and minor axis should be both taken into considering, however, the lack of research on minor axis limits the more comprehensive application. Five monotonic tests were carried out to investigate the influence under different parameters, and a new type connection were considered and detailed. Refined finite element models were built to validate the experimental results and to do several parametric analyses on initial rotational stiffness and plastic moment resistance, including of a presence of stiffened seat angle, angle thickness, and prying force. Furthermore, a new simplified plate method was proposed for calculating stiffness of stiffened angle and web in bending. The stiffened angle gives a significant increase at the moment-resisting capacity and the initial stiffness, the ultimate rotation of all tested specimens was beyond 0.067rad. The initial stiffness and plastic moment resistance of the joints were also controlled by the column web. The presence of the stiffener in the compression zone has the none effect on initial stiffness. The numerical analysis has captured the failure reason for weld and more attention should be paid to welding of stiffener in engineering design and practice. Adding stiffener at the top-and-seat angle joint can reduce the prying force of bolt, but it still cannot be ignored. The theoretical results were in good agreement with the experimental data and finite element results; therefore, it can be used to guide the design and selection of joints.

螺栓角连接以其简单、快速、经济、高质量、无需现场焊接的优异性能而被公认为是一种连接方式。长轴和短轴的力矩旋转行为都应该考虑，然而，对短轴的研究缺乏限制了更广泛的应用。进行了五次单调测试来研究不同参数下的影响，并考虑和详细说明了一种新型连接。建立了精细的有限元模型来验证实验结果，并对初始旋转刚度和塑性力矩阻力进行多项参数分析，包括加强座角、角厚度和撬力的存在。此外，提出了一种新的简化板法来计算弯曲时的加强角和腹板刚度。加劲角使抗弯矩能力和初始刚度显着提高，所有测试试件的极限旋转均超过0.067rad。节点的初始刚度和塑性弯矩阻力也由柱腹板控制。压缩区中加强筋的存在对初始刚度没有影响。数值分析已经掌握了焊缝失效的原因，工程设计和实践中应更加重视加强筋的焊接。在顶座角接处加加强筋可以减少螺栓的撬力，但仍不能忽视。理论结果与实验数据和有限元结果吻合较好；因此，它可以用来指导接头的设计和选择。