Socket assembly type arch rib, arch bridge and manufacturing and construction method

The invention provides a socket assembly type arch rib, an arch bridge and a manufacturing and construction method, and relates to the technical field of bridges, the socket assembly type arch rib comprises at least one first single body, the first single body comprises an inner pipe and an outer pipe sleeving the inner pipe, one end of the inner pipe extends out of the first end of the outer pipe to form a convex part, the other end of the inner pipe is located in the outer pipe, and the outer pipe is filled with concrete; the concrete forms a concave part for inserting the convex part of the other first single body at the second end of the outer pipe; aiming at the problem of insufficient strength of the arch rib caused by a concrete unfilled area in the arch rib of the current concrete-filled steel tube structure, a convex part and a concave part are respectively formed at the end parts of the double-layer concrete-filled steel tube single bodies, and the adjacent single bodies are connected through matche