Experimental and Finite Element Investigation of Laminated Carbon Fiber Reinforced Polymer Reinforced Railway Sleepers

Öz

In today's railway operations, as a result of increasing operating speeds and uninterrupted operating conditions, solutions that require less maintenance have become obligatory. In this study, sleepers, one of the most important railway building elements, are discussed. After presenting the various problems of conventional concrete sleepers mentioned in the literature, the use of carbon fiber reinforced polymers (CFRP) instead of existing steel reinforcements was investigated to solve these problems at the source. As CFRP reinforcement, a much lower cost laminated form is used instead of traditional circular reinforcement geometry. Static bending tests according to TS EN 13230-3 and detailed ANSYS finite element analysis were performed on the produced prototypes, and very positive results were obtained in terms of long and efficient service life.

Anahtar Kelimeler

• Railway sleepers
• Railroad ties
• Carbon fiber reinforced polymer
• Finite element analysis
• Low maintenance superstructure
• Sustainable transportation

Lamine CFRP Donatılı Traverslerin Deneysel ve Sonlu Eleman Analizleriyle İncelenmesi

Öz

Günümüz demiryolu işletmeciliğinde artan hız ve aralıksız işletim koşulları sonucunda, daha düşük bakım gerektiren çözümler mecburiyet halini almıştır. Bu çalışmada, en önemli demiryolu yapı elemanlarından biri olan traversler ele alınmıştır. Klasik betonarme traverslerin literatürde geçen çeşitli sorunlarına değinildikten sonra bu sorunların kaynağında çözümlenmesi adına mevcut çelik donatılar yerine karbon fiber takviyeli polimerlerin (carbon fiber reinforced polymers, CFRP) kullanımı araştırılmıştır. CFRP donatı olarak da geleneksel dairesel donatı geometrisi yerine çok daha düşük maliyetli lamine form kullanılmıştır. Üretilen prototiplerde yapılan TS EN 13230-3 statik eğilme testleri ve detaylı ANSYS sonlu eleman analizlerine göre uzun ve verimli servis ömrü açısından oldukça olumlu sonuçlar elde edilmiştir.

Anahtar Kelimeler

• Demiryolu traversleri
• Karbon fiber takviyeli polimer
• Sonlu eleman analizi
• Düşük bakımlı üstyapı
• Sürdürülebilir ulaştırma

Kaynakça

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