Abstract: The load distribution calculation of a multiple-ring-stiffened joint is one of the keys in the design of ultra-high voltage transmission towers. At present, the theory for the calculation of load distribution of multiple-ring-stiffened joints needs to be improved due to the complexity of the load transfer mechanism and of joint construction requirements. The capacity experiments of triple-, of four-, and of five-ring-stiffened joints are conducted and also the numerical analysis. According to this, the load transmission mechanism of the joints is revealed. Then, a rigid beam-spring bearing model is introduced and thus a load distribution calculation method for multi-ring plate joints considering ring plate stiffness is developed. Based on the numerical results. The comparison shows that the results obtained through the new method are better than the old one. Thus, it is indicated that the load distribution method considering ring stiffness has high applicability and good computational accuracy and is suitable for the load distribution of multiple-ring-stiffened joints.