Abstract: This paper presents one of the stages of research work concerning the study of the impact of transport infrastructure on the environment. Particular attention is paid to the study of dynamic impacts such as paraseismic traffic vibrations. The characteristics of the occurring vibrations are presented, along with the methods used to analyze the recorded vibration acceleration signal, and the advantages of using the wavelet transform are indicated. Furthermore, potential opportunities for a wider application of the transform in the analysis of these impacts are pointed out, which introduces a new quality in terms of the amount of information obtained regarding the analyzed signal.1. INTRODUCTION
In urban areas, there are high traffic volumes of transport means with a diverse and very complex structural composition, as well as significant fluctuations in daily traffic volume. The applicable regulations, including the provisions of the Environmental Protection Law, impose an obligation to prepare reports on the environmental impact assessment of investments. An extremely important element of such reports is the assessment of dynamic impacts, including vibrations and noise, which are increasingly appearing in the context of “pollution” of the natural environment. The analysis of vibration propagation paths originating from transport infrastructure elements to the immediate surroundings, known as the impact zone, requires individual consideration for each transport route, with a breakdown of the various means of transport occurring on it. In the case of new transport investments in urban areas, local changes in traffic organization occur, and the new traffic structure introduces new features characterizing dynamic excitations in its impact zone. If the modernization of an existing transport route takes place in an urban area, changes in the distance of the route from neighboring engineering structures will occur, as well as changes in the daily distribution of traffic volume. Also of significance here are changes
in soil properties in the vicinity of the new or modernized investment. In such cases, the problem arises not only of considering propagation paths but also of analyzing the impact of dynamic effects – based on broadly understood signal analysis. This paper presents elements of the development of a module belonging to a system for assessing dynamic impacts generated by transport means on the environment. (…)
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Source: Logistyka Magazine