Original scientific paper

https://doi.org/10.17559/TV-20190930132137

Combination of Boundary Element Method and Genetic Algorithm for Optimization of T-shape Noise Barrier

Sanja Grubeša* orcid.org/0000-0002-3843-5355 ; University of Zagreb, Faculty of EE and Computing, Unska 3, 10000 Zagreb, Croatia
Mia Suhanek ; University of Zagreb, Faculty of EE and Computing, Unska 3, 10000 Zagreb, Croatia
Ivan Djurek orcid.org/0000-0003-2368-7223 ; University of Zagreb, Faculty of EE and Computing, Unska 3, 10000 Zagreb, Croatia
Antonio Petošić orcid.org/0000-0003-2069-2764 ; University of Zagreb, Faculty of EE and Computing, Unska 3, 10000 Zagreb, Croatia

Abstract

This paper presents the acoustic and visual optimization of the T-shape noise barrier cap by using the Boundary Element Method (BEM) fused with the Genetic Algorithm (GA). This paper investigates whether the established methodology in reducing the traffic noise pollution can be applied to the geometry of the T-shape noise barrier cap. By performing the optimization with Genetic Algorithm, it is shown that it is possible to create a noise barrier that provides satisfactory acoustic efficiency at all
audio frequencies, from 125 Hz to 1 kHz. The obtained noise barriers are shown to be more efficient compared to conventional wooden T-shape noise barriers. Furthermore, by considering the parameter termed "Visual Pleasantness" it is shown that the opaque barriers are perceived as visually unpleasant when compared to the transparent ones. Based on these findings an optimized design of plain transparent noise barrier which does not diminish the aesthetic performance is proposed.

Keywords

Boundary Element Method; Genetic Algorithm; optimization of noise barriers; T-shape noise barrier cap

Hrčak ID:

251390

URI

https://hrcak.srce.hr/251390

Publication date:

5.2.2021.

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