Construction process of novel counterfort retaining wall

The invention relates to a construction process of a novel counterfort retaining wall, which is arranged at concrete retaining wall toes on two side parts of an existing road shoulder of a steel rail piece, and is of a stepped structure. Ditching at the bottom of the outer side of the toe of the concrete retaining wall and placing the bottom of the buttress; gravel soil layers are filled and tamped on the upper surfaces and the bottoms of the bottoms of the buttress pieces; a backfill earth-rock layer is placed between the vertical wall of the buttress piece and the toe of the concrete retaining wall; drain holes are respectively formed in the backfill soil and stone layer and the vertical wall of the buttress piece; a reinforcing steel bar assembly in the wall body is arranged in the backfill soil and stone layer and is in lap joint with reinforcing steel bars of the buttress pieces; the device is reasonable in design, compact in structure and convenient to use. 本发明涉及新型扶壁式挡墙的施工工艺，其设置在钢轨件的既有路肩两侧部的混凝土挡墙墙趾，其为台阶