A Finite Element Investigation of the Superelevated Horizontal Curve

Yıl 2019, Cilt: 40 Sayı: 2, 536 - 543, 30.06.2019

Murat Bostancıoğlu

https://doi.org/10.17776/csj.414347

Öz

Stress-strain analyses are studied under the bottom of the pavement
layer, and pavement life values are calculated depending on the cross-section
variation because of the superelevation in horizontal curves. For this purpose,
1st principal total mechanical strain values are analyzed with the
superelevation values changing between 0-8 (%) and the different positions of
wheel contact pressure. Finite element method is used for analysis. According
to results of the study, it is obtained that pavement life decreases with the
increasing superelevation, in the case of 8% superelevation and decreasing the
distance to pavement edge, pavement life decreasing gets to 34%.

Anahtar Kelimeler

Fatigue, finite element method, tensile strain, pavement life

Dever Uygulaması Yapılmış Bir Yatay Kurbanın Sonlu Elemanlar Yöntemi ile İncelenmesi

Öz

Bu çalışmada dever uygulaması yapılmış bir yatay kurbanın kaplama tabakası
altındaki gerilme-birim şekil değiştirme ve kaplama ömrü değerleri dever sebebiyle
değişen kesitlere bağlı olarak analiz edilmiştir. Bu amaçla deverin 0-8 (%)
değerleri arasında değişimine bağlı olarak ve ayrıca tekerlek temas gerilmesinin
pozisyonu değiştirilerek birim şekil değiştirme değerleri sonlu elemanlar yöntemi
ile analiz edilmiştir. Çalışmadan elde edilen sonuçlara göre dever değerinin artmasına
bağlı olarak kaplama ömrü azalmıştır. Bu azalma değeri deverin 8% olması ve yükleme
noktasının kaplama kenarına olan mesafesinin azalması ile 34% seviyesinde hesaplanmıştır.

Anahtar Kelimeler

Yorulma ömrü, sonlu elemanlar yöntemi, çekme birim şekil değişimi, kaplama ömrü

Kaynakça

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