Evaluation of the Track Geometry Quality with Standard Deviation Method and Quality Indices: Case study of Kütahya-Afyonkarahisar Railway Line

Year 2020, Volume: 20 Issue: 6, 1068 - 1078, 31.12.2020

Polat Yalınız , Sezgin İça

https://doi.org/10.35414/akufemubid.684336

Abstract

In this paper, a specific part of the railway line between Kütahya and Afyonkarahisar cities was investigated. The track geometry parameters alignment, cant, longitudinal level, track gauge and twist investigated at this track section in accordance with the related standard EN:13848-5 and evaluations conducted about the track geometry defects. A fatal train accident occurred on the Kütahya-Afyonkarahisar railway line in 2008, besides the line was completely renewed in 2013. For this reason, measurements were carried out by the help of track geometry measuring devices on the Kütahya-Afyonkarahisar railway line having the opportunity to compare the improvements at the track geometry quality, within four years period. Owing to measurements performed on the track section, improvements, degradations and degradation trends were determined using the standard deviation method mentioned in the standard EN:13848-5. In addition, the effects of the track renewal performed on the railway line discussed by the help of the Track Quality Indices (TQI), Overall Quality Indices (OQI) and Tamping Indices (TI) concepts. In light of the case study conducted at this paper, the quality of the track renewal and maintenance works performed by Turkish State Railways (TCDD) was examined.

Keywords

Railway, Alignment, Longitudinal Level, Track Geometry Indices, Track Geometry Quality

Thanks

T.C.D.D.

Yol Geometrisi Kalitesinin Standart Sapma Yöntemi ve Kalite Endeksleri İle Değerlendirilmesi: Kütahya-Afyonkarahisar Hattı Örneği

Abstract

Bu çalışmada, Kütahya-Afyonkarahisar şehirleri arasındaki konvansiyonel taşımacılık yapılan demiryolu hattı üzerinde belirli bir bölüm incelenmiştir. Söz konusu yol kesiminde, yol geometrisi parametreleri olan dever, ekartman, nivelman, fleş ve burulma hataları ilgili EN:13848-5 normu çerçevesinde incelenmiş ve bu yol geometrisi kusurları ile ilgili değerlendirilmeler yapılmıştır. Kütahya-Afyonkarahisar demiryolu hattında 2008 yılında ölümlü tren kazasının meydana gelmiş olup, ayrıca bu hatta 2013 yılında ise poz çalışması yapılarak hat tamamen yenilenmiştir. Bu nedenle hattaki iyileşmelerin karşılaştırılma imkanı bulunan Kütahya-Afyonkarahisar demiryolu hattında dört yıllık zaman dilimi içerisinde yol geometrisi ölçüm aletleri ile ölçüm çalışmaları yapılmıştır. Yapılan ölçümler sayesinde yol bölümündeki iyileşmeler, bozulmalar ve bozulma eğilimleri EN:13848-5 normunda da yer alan standart sapma yöntemi kullanılarak belirlenmiştir. Ayrıca Kütahya- Afyonkarahisar demiryolu hattı üzerinde yapılan poz çalışmasının yol geometrisi kalitesine etkileri yol kalite endeksleri (QI), toplam yol kalite endeksi (OQI) ve buraj endeksi (TI) kavramları ile irdelenmiştir. Bu çalışmada yapılan örnek olay incelemesi sayesinde, TCDD tarafından yapılmış olan yol yenileme ve bakım çalışmalarının kalitesi araştırılmıştır.

Keywords

Demiryolu, Fleş, Nivelman, Yol Geometrisi Endeksleri, Yol Geometrisi Kalitesi

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