Noise barrier

Abstract

Abstract Sound/noise barriers are shown that are useful along a noise source such as a rail or other right of way or next to a utility substation. The barriers have a profile characterized generally by an upwardly extending noise barrier wall and an upper, sideways projecting element. The wall reflects the noise to an advantageous point for absorption while the sideways projecting element performs a number of simultaneous functions. In various embodiments it serves as a barrier for upwardly reflected noise; as a protector, against the weather for sound absorptive devices, in particular sound absorptive materials that lie below it; as an emergency or safety walkway; as a beam strength structural element; as a support for another barrier placed above it; as a base in cases where the barrier is reversed for operation in a different mode; and as a cooperative element with noise baffles such as may be attached to rail cars and other noise sources. In the case of a reversible unit, the wall of the barrier is sloped to the vertical, and, depending upon selected orientation, reflects the noise either upwardly to the upper element of the unit or downwardly to base material upon which the unit rests. This base material may for instance be sound-absorptive ballast as found along railroads, transformer stations and the like. Barriers are shown which control noise coming from both sides and which provide additional functions such as protecting wiring systems and third rails along electric railways. In preferred forms the barriers are formed monolithic concrete modular units constructed as beams and having integral bases which can rest on ballast, piers or continuous structures. The units may be laterally retained as by molded channels in their bases, or may be stacked upon one another, for providing a higher sound control wall.

Inventors

• 👤 William H. Pickett

Bibliographic Details