THE IMPACT ANALYSIS OF THE NOISE SCREENS ON THE EXAMPLE OF A TRANSPORT INTERCHANGE IN THE CITY OF OMSK
Introduction. Noise pollution is one of the three most significant environmental disruptions in the world. In urban areas, the main source of noise is road transport, which accounts up to 80% of all noise. Noise protection measures are an integral part of the design both at the feasibility study stage and during a project development. In the conditions of cramped urban development, high density of the road network and the shortage of free territories, it is more appropriate to use noise protection structures in the form of roadside noise (acoustic) screens - vertical walls that are installed as close as possible to the highway. However, as the experience has shown, in operating conditions, noise screens do not always fully fulfill their protective function. This article presents a critical analysis of the effectiveness of the noise screens installation on the example of a traffic interchange on 15th Rabochaia in Omsk. Materials and methods. The evaluation of the effectiveness of the design solutions for the installation of noise screens and the execution of these solutions was carried out with two methods. The first method is calculating. The calculation of the noise impact from the traffic flow on the residential development was carried out according to the methodology of ODM 218.2.013-2011 the Guidelines for the protection from traffic noise of territories adjacent to the roads. To perform the calculations, the content and intensity of the movement of transport at each section of the interchange was determined. The geometric parameters on the object are set. The second method is experimental. To confirm the calculation results, the full-scale measurements of the noise level at nine points at the indicated interchange were carried out. Results. Based on the results of the calculation it was concluded that the current noise protection structures do not fully fulfill their function. A residential development in the area under consideration is located in the noise discomfort zone. The results of field measurements are confirmed by calculated data. The article gives recommendations for correcting the shortcomings made in the design and construction of the noise screens. Conclusion. Considering the results of the research presented in this article and published earlier, it is advisable to consider the reconstruction of the transport interchange on 15th Rabochaia street in Omsk.