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          Floating Trackbed - Subway Brasilia - Section Galeria dos Estados - Estac?o Central / Brazil



          Subway Brasilia - Track section Galeria dos Estados - Estac?o Central
          Element housing on plastic foil - prior to rebar form work
          Process of lifting and levelling the trackbed
          After lifting approx. 40 mm air gap
          Subway track has been lifted and levelled
          Subway Brasilia - Track section Galeria dos Estados - Estac?o Central
          Project
          Subway Brasilia track section Galeria dos Estados - Estac?o Central
          Mass-Spring-System for Subway
          Vibration Isolation System
          Gerb spring elements, type GSI
             
          Axle load
          170 kN
          Commissioning
          02/2001
             
          Mass-Spring-System
          Length: 2 x 300 m
          Vertical system natural frequency:
          6 Hz
          Trackbed Thickness: 410 bis 527 mm
          Design velocity:
          85 km/h
          Trackbed mass:
          2,9 - 3,7 t/m
          Owner
          METRO - DF
             
          Construction Details
          Spring supported in-situ concrete slab
          Consultant
          INA
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