Noise barrier structure for road construction

The invention discloses a road construction sound insulation barrier structure which structurally comprises a barrier plate, a fixing column, a connecting plate, a fixing plate, a first sound insulation layer, a second sound insulation layer and a third sound insulation layer are installed on the barrier plate, the fixing column is welded to the left end of the barrier plate, the connecting plate is welded to the right end of the barrier plate, and the fixing plate is welded to the right end of the barrier plate. The two sound insulation layers are symmetrically arranged on the upper side and the lower side of the barrier plate, the fixing plate is welded to the outer surface of the barrier plate, the first sound insulation layer is located on the left side of the interior of the barrier plate, the second sound insulation layer is located in the middle of the interior of the barrier plate, and the third sound insulation layer is located on the right side of the interior of the barrier plate ...