Special railway track structures for railway tunnels

Tema ovog rada su posebne kolosiječne konstrukcije u željezničkim tunelima. Opisane su opće karakteristike tunela u vidu ventilacije, odvodnje i temperaturnih promjena. Prikazane su karakteristike kolosijeka na čvrstoj podlozi koji su specifični za željezničke tunele te njihove prednosti i nedostatci u odnosu na klasične kolosiječne konstrukcije. Postupkom ugrađivanja pragova opisan je sustav ''Rheda'' koji je prototip za sve današnje kolosijeke bez zastornog materijala. Također je prikazana problematika prijelaza s klasičnog kolosijeka koji uključuje zastorni materijal na kolosijek bez tucaničkog zastora. Jedno od rješenja prijelaznih zona kolosijeka opisano je metodom stabilizacije zastorne prizme postupkom lijepljenja.The topic of this thesis are specific track structures in railway tunnels. The general tunnel characteristics, such as ventilation, drainage, and temperature changes, are described. The characteristics of tracks on solid surface, specific to railway tunnels, as well as their advantages and disadvantages in relation to classical track structures are presented. The “Rheda“system, which is the prototype for all today's tracks without a ballast bedding, is described through the sleeper instalment procedure. Furthermore, the issue of the transition zone from the ballasted track to the track without ballast is also presented. One of the solutions to the track transition zones is described by the stabilization method of ballast bonding