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          Mass-Spring-System for Urban Tram Line - Tunnel Cologne / Germany



          Setting of element housings - placed on bond breaker
          Placing of concrete
          Inserting spring elements - lifting of slab
          Joint between adjacent slabs
          Canting by using different height of plinths
          Project
          Cologne-Mülheim / Germany
          High-Performance Floating Trackbed System for an Urban Tram Line
          Vibration Isolation System
          GERB spring elements, Type GSI
             
          Design axle load
          10 t
          Commissioning
          1997
             
          Mass-Spring-System
          Total length: 2 x 900 m
          Vertical System natural frequency: 6,5 Hz
          Number of tracks: 2
          Design tram velocity: 80 km/h
          Trackbed mass:
          3,4 t/m
          Owner
          KVB K?ln
             
          Construction Details
          Spring supported in-situ concrete slabs Standard Rail S49
          Vibration & Acoustics Consultant
          IBU, Essen / Germany
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