Design of No.6 Single Turnout of Tramcar 54E1 Rail in Bogota,Colombia
The total length of the double track tramcar line in Bogota,Colombia is 39.66 km.In order to meet the operational requirements of the project,a 54E1 steel rail No.6(R50 m)single turnout was studied and designed.Based on the requirements for the front length,rear length,and overall length of the turnout given in the project,combined with the characteristics and parameter requirements of commonly used urban rail turnouts,parameters and layout without balanced centrifugal acceleration are selected.The switch rail adopts a steel rail with a cross-section of 54E1A1,and the heel end of the switch rail adopts a structure with certain bending deformation ability.The tip of the switch rail is hidden in the lower jaw of the base rail head(with a hidden tip value of 3 mm).To meet the requirements of seamless track,explosive hardening welded high manganese steel frog is adopted.The fastener structure is a split type Ⅱ elastic bar fastener.In order to reduce the outward inclination of the basic rail on both sides of the traction point and minimize the expansion of the track gauge,rail braces are installed on the outer side of the basic rail.
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