Assembly type steel trestle butt joint structure and connection method

The invention relates to the technical field of bridge construction, in particular to an assembly type steel trestle butt joint structure which comprises chord members, the number of the chord members is two, a plurality of supporting frames are arranged between the two chord members, connecting pieces are arranged on the surfaces of the supporting frames, and inclined supporting rods are arranged between every two adjacent supporting frames; the butt joint buckle plate is inserted into the groove body of one supporting frame, a through opening is formed in the surface of the butt joint buckle plate, and first preformed holes are formed in the surface of the through opening and the surface of one supporting frame; the fabricated steel trestle butt joint structure and the connecting method have the beneficial effects that the splicing pre-fixing structure is additionally arranged between the buckling grooves and the connecting plates, that is, after the connecting plates are inserted into the corresponding buc