The present application relates to a kind of modular steel structure beam end multi-stage energy dissipation connecting node and its steel
structure building, wherein, connecting node includes symmetrically arranged first energy dissipation structure and second energy dissipation structure, and
shear transfer structure is arranged between first energy dissipation structure and second energy dissipation structure;First energy dissipation structure and second energy dissipation structure are horizontally arranged, both are connected first building component in one end, and the other end is connected second building component;The first end of
shear transfer structure is connected first building component, and the second end is connected second building component;First energy dissipation structure and second energy dissipation structure can gradually occur buckling and yield deformation when connecting node is stressed;
Shear transfer structure can transmit
shear force between first building component and second building component when stressed.Its beneficial effects are that it realizes the independent adjustment of the stiffness and
carrying capacity of energy dissipation node while ensuring the equivalent initial stiffness with existing node.