Zbornik radova Koridor 10 - Kirilo Savić

3rd International Scientific and Professional Conference
CORRIDOR 10 - a sustainable way of integrations
Masses of small parts of the matter which oscillate and interior forces which tend to restore them to
the state of equilibrium are major contributors of unwanted noise during the rolling of wheels on the rail
(Figure 2). The rolling of wheels on the rail causes noise due to the following:
- geometrical shape of the wheel and surface of the rail head in the area of their contact,
- abrupt changes of stiffness in track with discrete rail support,
- influence of rail joints (mechanical with fishplates, isolated, welded)
- bumping and friction of flange of the outer wheel on the inner side of the head of the outer rail
in the curve.
FIG. 2. The oscillation principle of the "wheel-rail-rail bed" system
(Hohnecker, 2004)
Noise control in the wheel/rail contact point requires application of corresponding measures in design
and maintenance of the vehicle, track and track bed.
3. NOISE CONTROL IN THE PHASES OF PLANNING, DESIGN, CONSTRUCTION AND
MAINTENANCE OF THE RAILWAY INFRASTRUCTURE
The policy of modern European railway development assumes control of the possible harmful
influences on the environment in the phases of planning, design, construction and maintenance of the
railway infrastructure.
Relocation of freight transport subsystem (railways and stations for freight traffic) outside of urban area
of the railway junction gives the greatest contribution to reducing the negative impact of railway noise
on the population.
The tendency of applying urban rail systems (trams, light rail systems, metro, urban and suburban
railway) for passenger transportation grows in the urban environment, due to their advantage
regarding direct and indirect ecological effects in comparison to other modes of transport.
It can be concluded that the environmental impact of rail systems in the urban environment, from the
standpoint of infrastructure, is primarily defined by:
- separation of passenger and freight transport subsystem in the area of traffic junction,
- rail routing with respect to terrain,
- track alignment design parameters (spatial track macro-geometry),
- choice of the railway superstructure and substructure,
Belgrade, 2012 254