Sökning: "ballasted track"

Visar resultat 21 - 22 av 22 uppsatser innehållade orden ballasted track.

1. 21. Optimal Design of Bridges for High-Speed Trains : Single and double-span bridges

   Master-uppsats, KTH/Bro- och stålbyggnad; KTH/Järnvägsgruppen, JVG

   Författare :Carine Mellier; [2010]
   Nyckelord :Optimization; Vertical deck acceleration; Railway bridges; High-speed trains; Train Signature; Finite element analysis;

   Sammanfattning : To deal with an increasing demand in transportation, trains are made longer and faster. Higher speeds imply higher impacts on bridges. Therefore, structures have to be designed to resist these new constraints. The Eurocode (2002) introduced additional checks for the design of high-speed railway bridges. LÄS MER

3. 22. Design of railway bridges considering LCA

   Master-uppsats, KTH/Bro- och stålbyggnad; KTH/Järnvägsgruppen, JVG

   Författare :Vincent Thiebault; [2010]
   Nyckelord :Life Cycle Assessment LCA ; streamlined approach; Railway bridges; ballasted track; fixed concrete track; steel-concrete composite bridges; Bothnia Line;

   Sammanfattning : Environmental awareness has strongly increased these last years, especially in the developed countries where societies have become increasingly preoccupied by the natural resource depletion and environmental degradation. At the same time, the increasing mass transportation demand throughout the European Union requires the development of new infrastructures. LÄS MER