Steel trestle with shallow and thin covering layer

A steel trestle with a shallow and thin covering layer comprises a plurality of groups of pile columns, and the upper portions of the plurality of groups of pile columns are connected through parallel connection and diagonal bridging to form bench piles. A pile top longitudinal beam, a pile top cross beam and a main longitudinal beam are sequentially installed at the upper end of the bench pile, a transverse distribution beam is transversely installed on the main longitudinal beam, and a traveling crane panel is laid on the transverse distribution beam. Through holes are drilled in the fully-weathered rock surface at the bottom ends of the multiple groups of piles, a positioning rod is inserted into each through hole, the positioning rod partially extends out of the fully-weathered rock surface and is located in the corresponding pile, and a concrete layer is poured on the part, located above the fully-weathered rock surface, in each pile. According to the steel trestle with the shallow and thin covering laye