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Zbornik radova Koridor 10 - Kirilo Savić

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3rd International Scientific and Professional Conference<br />

CORRIDOR <strong>10</strong> - a sustainable way of integrations<br />

By choosing the elements of geometry in the layout plan (radii of horizontal circular curves, shape and<br />

length of transition curves, the length of tangent sections) and longitudinal profile (gradient slope, the<br />

shape of the superelevation ramps, the position of gradient change point, radii of vertical curves) the<br />

expected scope and types of activities, as well as maintenance costs during exploitation are defined.<br />

This is important because each irregularity of track micro-geometry increases the emission of noise<br />

during the passage of rail vehicles.<br />

After determining the spatial position and track alignment design parameters, the design of<br />

superstructure and substructure defines the level of ecological influence on the environment.<br />

The expected calculated railway noise level emitted in the environment must be in accordance with<br />

legal guidelines. Otherwise, the design determines additional noise protection measures such as low<br />

and high noise protection walls, embankments, plantings, installation of special windows in nearby<br />

buildings and other appropriate measures, in order to harmonize the expected noise levels with the<br />

statutory provisions.<br />

FIG. 5. Noise and vibrations control during planning, design, construction and exploitation<br />

The expected calculated railway noise level emitted in the environment must be in accordance with<br />

legal guidelines. Otherwise, the design determines additional noise protection measures such as low<br />

and high noise protection walls, embankments, plantings, installation of special windows in nearby<br />

buildings and other appropriate measures, in order to harmonize the expected noise levels with the<br />

statutory provisions.<br />

During the track exploitation, vibrations and noise level emitted into the environment must be<br />

maintained according to calculated guidelines. In order to achieve that, the track maintenance and<br />

noise level monitoring are mandatory. Modern maintenance compulsorily includes rail care, inspection,<br />

regular and corrective maintenance of track elements and geometry (Figure 5).<br />

4. INFLUENCE OF THE SUPERSTRUCTURE DESIGN ON THE NOISE EMISSION<br />

Design of the superstructure generally must fulfil the usual requests of the convenient transmission of<br />

the static and dynamic load based on the principle of stress reduction, starting from the rail towards<br />

Belgrade, 2012 256

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