Large sound barrier suitable to major trunk road in city

Abstract

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.

Description

technical field [0001] The invention belongs to road (highway) road traffic noise control technology, in particular to a large-scale sound screen suitable for urban main roads, and belongs to the field of environmental protection engineering. Background technique [0002] Sound barriers have been commonly used in traffic noise control projects on urban highways, but for urban arterial roads with heavy traffic, extremely wide roads, complex underground pipelines, and serious noise pollution, can sound barrier measures be used and what kind of sound barriers can be used? Effective control of traffic noise is a challenge to the design and practice of large-scale noise barriers in my country. For example, the Shanghai Outer Ring Road has two-way eight-lane roads, and some road sections have been rebuilt into ten-lane roads. The design speed is 80-100 km / h. The daily traffic volume is 100,000-200,000 vehicles, with large vehicles accounting for 50-60%. The Class 4 standard of "Re...

AI Technical Summary

Problems solved by technology

However, most urban barriers are constructed on the roads after they are completed. Complex pipelines and other obstacles have been buried on the roadside, which need to be avoided, but smooth curves are required for the barriers. This is a contradiction

[0004] In addition, for coastal cities, the foundation and structure of the above-mentioned large-scale barriers must be safe and reliable, and be able to defend against the 12-level typhoon that occurs once in 50 years (the wind speed is 31.3m / s, and the wind pressure is 0.55KN / m 2 ), there must be a solid foundation structure, but at the same time it is required that the foundation structure is economically cheap and can adapt to the construction under the above-mentioned complex conditions, which is another contradiction

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