1 research outputs found
Assessment of track geometry quality using fractal analysis of measured data
ΠΡΠ΅Π΄ΠΌΠ΅Ρ ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ° Ρ ΠΎΠ²ΠΎΡ ΠΠΈΡΠ΅ΡΡΠ°ΡΠΈΡΠΈ je ΠΎΠ΄ΡΠ΅ΡΠΈΠ²Π°ΡΠ΅ ΠΊΠ²Π°Π»ΠΈΡΠ΅ΡΠ° Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ° ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌ ΡΡΠ°ΠΊΡΠ°Π»Π½Π΅ Π°Π½Π°Π»ΠΈΠ·Π΅ Π½Π°Π΄ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΠΌ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΠΌΠ° Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ°. Π£ ΠΎΠΊΠ²ΠΈΡΡ ΠΠΈΡΠ΅ΡΡΠ°ΡΠΈΡΠ΅ ΡΠ΅ Π΄Π°Ρ ΠΏΡΠ΅Π³Π»Π΅Π΄ Π³Π»Π°Π²Π½ΠΈΡ
ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΠ°ΡΠ° Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ° ΠΈ ΡΠΈΡ
ΠΎΠ²ΠΈΡ
Π³ΡΠ°Π½ΠΈΡΠ° ΡΠΎΠ»Π΅ΡΠ°Π½ΡΠΈΡΠ΅ Ρ ΡΠΊΠ»Π°Π΄Ρ ΡΠ° ΡΠ΅ΡΠΈΡΠΎΠΌ ΡΡΠ°Π½Π΄Π°ΡΠ΄Π° EN 13848. ΠΠ·Π²ΡΡΠ΅Π½ΠΎ ΡΠ΅ ΡΠ΅ΡΡΠΈΡΠ°ΡΠ΅ ΡΠ΅ΡΠΈΡΠΈ ΠΌΠ΅ΡΠΎΠ΄Π΅ ΡΡΠ°ΠΊΡΠ°Π»Π½Π΅ Π°Π½Π°Π»ΠΈΠ·Π΅ Π½Π° ΠΏΡΠΈΠΌΠ΅ΡΡ ΡΠ΅Π΄Π½ΠΎΠ³ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ° Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ°, Π½Π°ΠΊΠΎΠ½ ΡΠ΅Π³Π° ΡΠ΅ ΠΈΠ·Π°Π±ΡΠ°Π½Π° ΠΌΠ΅ΡΠΎΠ΄Π° ΠΊΠΎΡΠΎΠΌ ΡΡ Π΄ΠΎΠ±ΠΈΡΠ΅Π½ΠΈ Π½Π°ΡΠΏΠΎΡΠ·Π΄Π°Π½ΠΈΡΠΈ ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠΈ β Π±ΠΎΠΊΡ ΠΌΠ΅ΡΠΎΠ΄Π°. ΠΠ° ΠΏΡΠΈΠΌΠ΅Π½Ρ Π±ΠΎΠΊΡ ΠΌΠ΅ΡΠΎΠ΄Π΅ ΡΠ°Π·Π²ΠΈΡΠ΅Π½ ΡΠ΅ ΡΠΎΡΡΠ²Π΅ΡΡΠΊΠΈ Π°Π»Π°Ρ ΠΊΠΎΡΠΈΡΡΠ΅ΡΠ΅ΠΌ ΠΏΡΠΎΠ³ΡΠ°ΠΌΡΠΊΠΎΠ³ ΡΠ΅Π·ΠΈΠΊΠ° AutoLISP, ΠΊΠΎΡΠΈ ΠΎΠΌΠΎΠ³ΡΡΠ°Π²Π° ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ°ΡΠ΅ ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° Π°Π½Π°Π»ΠΈΠ·Π΅ Ρ CAD ΠΎΠΊΡΡΠΆΠ΅ΡΡ. ΠΡΠΈΠΌΠ΅Π½ΠΎΠΌ Π±ΠΎΠΊΡ ΠΌΠ΅ΡΠΎΠ΄Π΅ ΠΈΠ·Π²ΡΡΠ΅Π½Π° ΡΠ΅ Π°Π½Π°Π»ΠΈΠ·Π° ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΠ°ΡΠ° Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ° Π½Π° Π΄Π΅ΠΎΠ½ΠΈΡΠΈ ΠΠ°ΡΠΊΠΎΠ²Π°Ρ-ΠΠ°ΡΠ΅Π²ΠΎ ΠΆΠ΅Π»Π΅Π·Π½ΠΈΡΠΊΠ΅ ΠΏΡΡΠ³Π΅ ΠΠ΅ΠΎΠ³ΡΠ°Π΄-ΠΡΠ±Π½ΠΈΡΠ°. ΠΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ° ΡΡ ΠΏΡΠ²ΠΎ Π°Π½Π°Π»ΠΈΠ·ΠΈΡΠ°Π½ΠΈ ΠΏΠΎΡΠ΅Π΄ΠΈΠ½Π°ΡΠ½ΠΎ, ΠΊΠ°ΠΊΠΎ Π±ΠΈ ΡΠ΅ ΡΡΠ²ΡΠ΄ΠΈΠ»ΠΈ ΠΎΠ΄ΡΠ΅ΡΠΈ Π½Π° ΠΊΠΎΡΠΈΠΌΠ° ΡΠ²Π°ΠΊΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΠ°Ρ ΠΈΠΌΠ° Π½Π°ΡΠ»ΠΎΡΠΈΡΠΈ ΠΊΠ²Π°Π»ΠΈΡΠ΅Ρ, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ Π½Π°ΡΠ²Π΅ΡΡ ΡΡΠ°ΠΊΡΠ°Π»Π½Ρ Π΄ΠΈΠΌΠ΅Π½Π·ΠΈΡΡ. ΠΠΎΡΠΎΠΌ ΡΠ΅ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡΠ° Π·Π° Π΄Π΅ΡΠΈΠ½ΠΈΡΠ°ΡΠ΅ ΠΈΠ½Π΄Π΅ΠΊΡΠ° ΠΊΠ²Π°Π»ΠΈΡΠ΅ΡΠ° ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ° ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌ ΡΡΠ°ΠΊΡΠ°Π»Π½Π΅ Π°Π½Π°Π»ΠΈΠ·Π΅. Π£ΡΠ²ΡΡΠ΅Π½Π΅ ΡΡ Π΄Π²Π΅ ΡΠ΅ΡΠ΅ΡΠ΅Π½ΡΠ½Π΅ Π΄Π΅ΠΎΠ½ΠΈΡΠ΅, ΠΎΠ΄ ΠΊΠΎΡΠΈΡ
ΡΠ΅Π΄Π½Π° ΠΈΠΌΠ° Π½Π°ΡΠ±ΠΎΡΠΈ, Π° Π΄ΡΡΠ³Π° Π½Π°ΡΠ»ΠΎΡΠΈΡΠΈ ΠΊΠ²Π°Π»ΠΈΡΠ΅Ρ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ°. ΠΠ° ΡΠ΅ΡΠ΅ΡΠ΅Π½ΡΠ½ΠΈΠΌ Π΄Π΅ΠΎΠ½ΠΈΡΠ°ΠΌΠ° ΡΡ ΡΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π° ΠΎΠ΄Π³ΠΎΠ²Π°ΡΠ°ΡΡΡΠ° ΡΠ΅ΡΠ΅Π½ΡΠΊΠ° ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ° ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌ ΡΠ°Π²ΡΠ΅ΠΌΠ΅Π½ΠΈΡ
Π½Π΅Π΄Π΅ΡΡΡΡΠΊΡΠΈΠ²Π½ΠΈΡ
ΡΠ΅Ρ
Π½ΠΈΠΊΠ° ΠΌΠ΅ΡΠ΅ΡΠ°, ΠΊΠ°ΠΊΠΎ Π±ΠΈ ΡΠ΅ Π΄ΠΎΠΊΠ°Π·Π°Π»ΠΎ Π΄Π° Π»ΠΎΡ ΠΊΠ²Π°Π»ΠΈΡΠ΅Ρ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ° ΡΠΊΠ°Π·ΡΡΠ΅ Π½Π° Π»ΠΎΡΠ΅ ΡΡΠ°ΡΠ΅ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΡΠ΅ Π³ΠΎΡΡΠ΅Π³ ΠΈ Π΄ΠΎΡΠ΅Π³ ΡΡΡΠΎΡΠ° ΠΆΠ΅Π»Π΅Π·Π½ΠΈΡΠΊΠ΅ ΠΏΡΡΠ³Π΅. Π Π΅Π·ΡΠ»ΡΠ°ΡΠΈ ΡΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ
ΡΠ΅ΡΠ΅Π½ΡΠΊΠΈΡ
ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ° ΡΡ ΠΏΠΎΡΠ²ΡΠ΄ΠΈΠ»ΠΈ Π΄Π° ΡΠ΅ ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌ ΡΡΠ°ΠΊΡΠ°Π»Π½Π΅ Π°Π½Π°Π»ΠΈΠ·Π΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΠ°ΡΠ° Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠΎΠ»ΠΎΡΠ΅ΠΊΠ° ΠΌΠΎΠΆΠ΅ ΠΎΠ΄ΡΠ΅Π΄ΠΈΡΠΈ ΠΊΠ²Π°Π»ΠΈΡΠ΅Ρ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ ΠΊΠ°ΠΎ ΠΈΠ½Π΄ΠΈΠΊΠ°ΡΠΎΡ ΡΡΠ°ΡΠ° ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΡΠ΅ Π³ΠΎΡΡΠ΅Π³ ΠΈ Π΄ΠΎΡΠ΅Π³ ΡΡΡΠΎΡΠ° ΠΆΠ΅Π»Π΅Π·Π½ΠΈΡΠΊΠ΅ ΠΏΡΡΠ³Π΅.The research presented in this thesis implies assessment of track geometry quality using fractal analysis of measured data. This research presents main track geometry parameters and there limits according to standard series EN 13848. Four fractal analysis methods were tested using single track geometry parameter. Afterwards, box method was chosen due to the most reliable results it provided. Application of box method was conducted using software tool developed with AutoLISP programming language, since it provides representation of the obtained results in CAD environment. Box method was applied for the analysis of track geometry parameters on the section Lajkovac-Valjevo on the rail line Belgrade-Vrbnica. Track geometry parameters were analysed separately in order to determine section with worst geometry (section with largest fractal dimension) for each parameter. New method for assessment of track geometry quality using fractal analysis was proposed. Two reference sections were defined using the proposed method, one with best track geometry quality and other with worst geometry quality. Two reference sections were additionally investigated in the field in order to prove that poor track geometry quality indicates poor condition of railway superstructure and substructure. Results of filed investigations confirmed that fractal analysis of track geometry parameters could provide basis for determination of railway superstructure and substructure condition