BS EN 16727-2-2 defines the loading, the relevant load model positions, and the internal forces acting on noise barriers, due to the air pressure wave set out in BS EN 1991-2:2003.
The calculation method described in BS EN 16727-2-2 has been developed for noise barriers having a post-and-panel structure with piled foundations. BS EN 16727-2-2 can also be used where cladding is attached to a rigid structure. For structures with piled foundations, an empirical formula for the determination of the natural frequency is given in Annex A.
Note1: The vertical and horizontal shapes of the air pressure wave and the dynamic effects have been taken into account.
Note2: BS EN 16727-2-2 contains an example of the application of the calculation method for the determination of internal forces and moments acting on a mid-post. The design of noise barriers (e.g., to fatigue resistance) of part of BS EN 16727-2-2.
BS EN 16727-2-2 on mechanical performance under dynamic loadings caused by passing trains - Calculation method is useful for:
Passing trains generate pressure variations in the shape of air pressure waves which impact on noise barriers installed alongside the track. In circumstances where there is a lack of design information or doubt about the parameters required to undertake tests or calculation for noise barriers having a post-and-panel structure with piled foundations, verification of a design, additional surveys, and geotechnical investigations are essential so as to obtain the required values in order to ensure the safety and serviceability of the complete noise barrier.
BS EN 16727-2-2 presents a calculation method to assess the capacity of noise barriers having a post-and-panel structure with piled foundations to resist this pressure variation including an allowance for dynamic response of the structure.
BS EN 16727-2-2 will ensure that noise barriers withstand the impact without any part of them becoming detached or displaced in a way that creates a safety hazard for passing trains or people.
EN 16727-2-2:2016