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Speed Increasing for Track Section Týniště nad Orlicí - Choceň
Hlávka, Miloslav ; Šiške, Vladimír (referee) ; Hruzíková, Miroslava (advisor)
This bachelor´s thesis studies a possibility of line speed increasing in the track Týniště nad Orlicí – Choceň. The proposed rate increase is assessed in four variants. One of them solves a speed increasing without a change of the track geometric parameters. The others include changes of the track geometric parameters. It is also considered a speed limit in areas of railway crossings, rail development and lights position.
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Development of Long-pitch Corrugation in Curves of Small Radii
Valehrach, Jan ; Kohout,, Martin (referee) ; Lidmila,, Martin (referee) ; Plášek, Otto (advisor)
Throughout the operation, the rails are worn and deteriorate. With the increasing speed of rolling stock, along with higher track loads and especially in the vicinity of major traffic hubs with a higher frequency of trains, defects that did not occur to such an extent before or were not considered to be significant, are brought to the forefront of the concerns of track infrastructure managers. Even though these defects are not directly restrictive to traffic operation, they are, in any case, a source of noise and vibration. One of these defects on the railway track is the micro-geometry defect of the running surface of the railhead. In directional curves with radii of less than 600 m or 700 m, defects known as long-pitch corrugation occur on the inner rail. In curves with 300 m or smaller radii, these waves are so distinct that they are a significant source of noise and vibration. In particular, vibrations affect the track surroundings and the track itself, as they cause other defects in the track structure. This dissertation deals with long-pitch corrugation, focusing on the monitoring of wave generation and development over time. The verification of the possibility to track the development of slip waves over time is the basis for possible future models predicting the development of defects. Numerous measurements of geometric parameters of the track and microgeometry of the railheads, specifically slip waves, have been carried out in the framework of the problem. Using RMS and peak-to-peak methods, the rate of development of defects over time and the relationship with other track parameters were evaluated. Based on the obtained development curves, intervals for further maintenance interventions were estimated. A part of the thesis focuses on the deficiency or excess of cant concerning the development of long-pitch corrugation.
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Speed Increasing for Track Section Křenovice - Nezamyslice
Bombera, Jan ; Kroupa, Jan (referee) ; Svoboda, Richard (advisor)
Bachelor´s thesis deals with the possibility of increasing the line speed at Křenovice – Nezamyslice track number 315A. Speed increasing is tested in two steps – with current track geometry parameters and with changing some of the track geometry parameters, but always in order to meet regulatory and normative limit values. The new speed is determined for conventional vehicles and for vehicles that are able to take advantage of cant deficiency I > 100 mm. Speed limits in locations of railway crossings, signals position, etc., are taken into account for speed increasing. In some cases are proposed measures to change these objects.
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Modernization of Brno - Přerov railway line in Vyškov area for speed 200 km/h
Hašek, Jan ; Rotschein, Petr (referee) ; Plášek, Otto (advisor)
The objective of this master´s thesis is a design of modernization of railway line no. 300 Brno – Přerov in Vyškov area and its vicinity for speed 200 km/h. The track section is located between railway station Luleč and Ivanovice na Hané. The track is designed in two variants. The first variant is proposed keeping railway line through Vyškov railway station including necessary modification of the railway station. The second variant suggests keeping track outside Vyškov and a connection with the railway station by bridging is designed.
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Speed Increasing for Track Section Čejč - Hodonín
Látal, Jan ; Komárek, Jan (referee) ; Svoboda, Richard (advisor)
This bachelor´s thesis will examine the possibility of increasing the line speed in the track section Čejč - Hodonín. The proposed rate increase will be considered in two variants, the first version based on the retention of geometrical parameters of the current track, the second option will involve changes of the track geometry parameters. These changes, however, may not cause significant interference with the body lines. Both cases must also be seen in the speed limit in areas of railway crossings, railway branching, position lights, etc., or its possible proposed the change of this objects.
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Development of Long-pitch Corrugation in Curves of Small Radii
Valehrach, Jan ; Kohout,, Martin (referee) ; Lidmila,, Martin (referee) ; Plášek, Otto (advisor)
Throughout the operation, the rails are worn and deteriorate. With the increasing speed of rolling stock, along with higher track loads and especially in the vicinity of major traffic hubs with a higher frequency of trains, defects that did not occur to such an extent before or were not considered to be significant, are brought to the forefront of the concerns of track infrastructure managers. Even though these defects are not directly restrictive to traffic operation, they are, in any case, a source of noise and vibration. One of these defects on the railway track is the micro-geometry defect of the running surface of the railhead. In directional curves with radii of less than 600 m or 700 m, defects known as long-pitch corrugation occur on the inner rail. In curves with 300 m or smaller radii, these waves are so distinct that they are a significant source of noise and vibration. In particular, vibrations affect the track surroundings and the track itself, as they cause other defects in the track structure. This dissertation deals with long-pitch corrugation, focusing on the monitoring of wave generation and development over time. The verification of the possibility to track the development of slip waves over time is the basis for possible future models predicting the development of defects. Numerous measurements of geometric parameters of the track and microgeometry of the railheads, specifically slip waves, have been carried out in the framework of the problem. Using RMS and peak-to-peak methods, the rate of development of defects over time and the relationship with other track parameters were evaluated. Based on the obtained development curves, intervals for further maintenance interventions were estimated. A part of the thesis focuses on the deficiency or excess of cant concerning the development of long-pitch corrugation.
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Modernization of Brno - Přerov railway line in Vyškov area for speed 200 km/h
Hašek, Jan ; Rotschein, Petr (referee) ; Plášek, Otto (advisor)
The objective of this master´s thesis is a design of modernization of railway line no. 300 Brno – Přerov in Vyškov area and its vicinity for speed 200 km/h. The track section is located between railway station Luleč and Ivanovice na Hané. The track is designed in two variants. The first variant is proposed keeping railway line through Vyškov railway station including necessary modification of the railway station. The second variant suggests keeping track outside Vyškov and a connection with the railway station by bridging is designed.
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Speed Increasing for Track Section Křenovice - Nezamyslice
Bombera, Jan ; Kroupa, Jan (referee) ; Svoboda, Richard (advisor)
Bachelor´s thesis deals with the possibility of increasing the line speed at Křenovice – Nezamyslice track number 315A. Speed increasing is tested in two steps – with current track geometry parameters and with changing some of the track geometry parameters, but always in order to meet regulatory and normative limit values. The new speed is determined for conventional vehicles and for vehicles that are able to take advantage of cant deficiency I > 100 mm. Speed limits in locations of railway crossings, signals position, etc., are taken into account for speed increasing. In some cases are proposed measures to change these objects.
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Speed Increasing for Track Section Týniště nad Orlicí - Choceň
Hlávka, Miloslav ; Šiške, Vladimír (referee) ; Hruzíková, Miroslava (advisor)
This bachelor´s thesis studies a possibility of line speed increasing in the track Týniště nad Orlicí – Choceň. The proposed rate increase is assessed in four variants. One of them solves a speed increasing without a change of the track geometric parameters. The others include changes of the track geometric parameters. It is also considered a speed limit in areas of railway crossings, rail development and lights position.
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Speed Increasing for Track Section Čejč - Hodonín
Látal, Jan ; Komárek, Jan (referee) ; Svoboda, Richard (advisor)
This bachelor´s thesis will examine the possibility of increasing the line speed in the track section Čejč - Hodonín. The proposed rate increase will be considered in two variants, the first version based on the retention of geometrical parameters of the current track, the second option will involve changes of the track geometry parameters. These changes, however, may not cause significant interference with the body lines. Both cases must also be seen in the speed limit in areas of railway crossings, railway branching, position lights, etc., or its possible proposed the change of this objects.
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