Floating Trackbed - Subway Brasilia - Section Galeria dos Estados - Estacão Central / Brazil



Subway Brasilia - Track section Galeria dos Estados - Estacão 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 - Estacão Central
Project
Subway Brasilia track section Galeria dos Estados - Estacão 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