Stiff concrete structural beam-column joint structure

Provided is a stiff concrete structural beam-column joint structure. A cross-shaped steel column (3) is installed perpendicular to the horizontal plane; four erected wing plates (7) are arranged along the four outer ends of two mutually-perpendicular webs (2) of the cross-shaped steel column (3) respectively, and every two wing plates (7) on the two sides of the same web (2) are parallel to each other; a set of horizontally-installed longitudinal steel bars (1) are perpendicular to the central axis of the cross-shaped steel column (3), the longitudinal steel bar (1) located in the middle is parallel to one web (2) and is perpendicularly connected with the outer side faces of the two wing plates (7) at the two corresponding ends of the web (2), and the longitudinal steel bars (1) located on the two outer sides pass from one sides of the two wing plates (7) and are connected with the edge or wing plates (7) of the other web (2). The joint structure is good in integrity and effectively guarantees the construction quality of section steel column joints; the joint structure is simple, saves steel and has good economic benefits; the joint structure is convenient to install, and project quality and the bearing capacity of a joint area are improved.