Demiryolu dolgularının taşkın anındaki güvenliğinin değerlendirilmesi

Bu çalışmada, geniş düzlük üzerine inşa edilen tipik bir demiryolu dolgusunun 200 yıllık tekerrür süresine sahip bir taşkın anındaki güvenliği sızma ve şev stabilitesi analizleriyle incelenmiştir. Bu amaçla, dolgunun sonlu elemanlar yöntemiyle sızma analizleri gerçekleştirilmiş, limit denge analizi yöntemiyle memba ve mansap şevlerinin stabiliteleri değerlendirilmiştir. Elde edilen sonuçlara göre demiryolu dolgusu taşkın anında sızmaya karşı güvenli bulunmuştur. Dolgu, bu anda, demiryolu hattının işletilmediği durumda şevlerinin kaymasına karşı da güvenli bulunmuştur. Ancak, demiryolu hattının taşkın anında işletilmesinin şevlerin stabilite güvenliğini tehlikeye attığı tespit edilmiştir.

Anahtar Kelimeler:

Demiryolu dolgusu, Yapısal emniyet, Taşkın, Sızma analizi, Şev stabilitesi

Safety assessment of railway embankments during floods

In this study, the safety of a typical railway embankment built on a large plain subject to a 200-year return period flood investigated with seepage and slope stability analyses. To this end, seepage analyses performed with finite element method. Stability analysis conducted for upstream and downstream slopes using limit equilibrium method. According to the results, the railway embankment found to be safe against seepage during the flood. The embankment also found to be safe against sliding of its slopes when the railway line was not in operation. However, the operation of the railway line during the flood endangered the safety of the stability of the slopes.

Keywords:

Railway embankment, Structural safety, Flood, Seepage analysis, Slope stability,

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