The invention relates to a large
sound barrier suitable to a major
trunk road in a city, which comprises a road-side road-
bed section barrier, a road-side bridge-
bed section barrier, an in-road road-
bed section barrier and an in-road bridge-bed section barrier. The large
sound barrier is characterized in that the two barriers of road-side and in-road are arranged for reducing
noise based on the characteristics of wide road, large
traffic flow and high
noise value in the major
trunk road in the city, the height of the road-side road-bed section barrier is not more than 6.5m, the height of the road-side bridge-bed section barrier is not less than 5.35m, the height of the in-road barriers is not less than 4.35m, and extending lengths of two ends of the barriers exceed sensitive spots by 70m respectively; foundations of the road-bed section barriers adopt a combination structural mode of U-shaped piles, bearing platforms, upright posts and connecting walls; foundations of the bridge-bed section barriers adopt a structural mode that U-shaped pieces and opposed bolt
plant gum are fixed on anti-collision piers; materials of the barrier consist of
perlite, foamed aluminum plates or aluminum
fiber boards, and microperforated plates; structures of the barriers adopt a mode of straight screens and top sound absorbing cylinders, and adopt a combination mode of sound absorbing screens with single-faced foamed aluminum plates, double-faced foamed aluminum plates, or single-faced aluminum
fiber boards and double-faced aluminum
fiber boards according to the demands of
noise source and surrounding road conditions.