The project for noise barriers and others NRD for transport infrastructures: An overall vision and implementation experience in the countries of southern Europe

Invited paper

Dámaso M. Alegre


Monday 1 june, 2015, 11:20 - 11:40

0.2 Berlin (90)

When a corrective action, must take against traffic noise impact, given the enormous difficulty of reducing noise in the vicinity of a transport infrastructure, it is necessary to have all the possible options. Among them, are usually considered installing noise barriers on roads and railway lines. Currently, the state of art in the definition, manufacturing and implementation of noise barriers, is highly developed, and the sector offers a range capable of responding to technical requirements and design, that allow adequately resolve much of situations. However, the design of the noise barriers, for a given section of road or rail, is often very complex and involves conducting a thorough analysis of all the factors involved: • Precise quantification of the acoustic problem to be solved and defining the acoustic efficiency that must provide the noise barrier. • Determine the location of the noise barrier with respect to the road or rail • Geometric design of the screen: height and length. Different calculation models exist with very different degree of reliability when optimizing the geometric sizing of the noise barrier. • Design for building: European Standards have been published in which, is defined the applicable requirements to noise barriers • Defining of the acoustic performance of the constituent materials of the noise barrier: absorbent or reflective. • Design for maintain the road and environmental safety. • Defining the service life of the screen: this is an aspect often neglected by designers, however, affects everyone else. All these aspects should be understanding under sustainability criteria. Present paper described how should be addressed the drafting of the project of the noise barriers and minimum requirements to must be reflected in the technical specifications, based on conditions applicable from regulations, standards and CE marking. Also experience gained after some projects, in southern Europe, is displayed.

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