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HUESKER Geosintéticos S.A.U.
C/ O. Nave 8
31110 Noain (Navarra)
España
  • Gartung, Dr.-Ing. E.
  • Alexiew, Dr.-Ing. D.
  • Bergmair, F.

Geogrid reinforced railway embankment on piles- Monitaring

Abstract

To cross an area  of deep, soft, organic soil deposits in northern Germany,  the embankment of a double  track  trunk  railway  line  is founded  on cast  iron  piles and  concrete  pile caps.  The  embankment  has  a height  of 2.5 m,  it  is reinforced  by 3 layers  of polyester  geogrids.  The  performance of the reinforcerment and of the piles is monitored by strain gauges,  rod extensometers, acceleration transducers and  conventional surveying.  The  first  part  of the  geogrid  reinforced  embankment has been  in service for more  than  2 years. The  measurements reveal the  anticipated deformations and  satisfactory performance of the  novel structure.

Conclusion

For a geogrid reinforced railway embankment founded on piles, a monitoring program  was developed and implemented.  Since  almost  two years,  the  instrumentation has performed very well and yielded reliable  data  for the evaluation of the performance of the  geogrid  reinforced  structure. The  measurements  indicate that  the  structure responds  to the dead  and  live loads in a satisfactory manner, and that   a sufficient  margin  of safety  with  respect  to stability as  well as  adequate  servicebility can  be assigned  to the  geogrid  reinforced  embankment.