A steel anchor box which is suitable for the pin-jointed suspension cables of railway steel truss girder suspension bridges

The invention discloses a steel anchor box suitable for a pin-jointed suspension cable of a railway steel truss girder suspension bridge, comprises a top plate, a bottom plate, a web plate and a sideplate, wherein the web plate comprises two outer web plates and an intermediate web plate located between the two outer web plates; the intermediate web plate divides the box body of the steel anchorbox into two cavities; each cavity is provided with a first ear plate; The two side plates are parallel to the upper chord integral node plate lug plate, and the side plate is detachably connected with the upper chord integral node plate lug plate. The steel anchor box is designed as an independent structure, and the steel anchor box is detachably connected with an integral node plate lug plate, which is convenient for factory manufacture and field installation, and also convenient for later maintenance and replacement. The bottom plate of the steel anchor box is located above the upper chordbar and is not welded with