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EUROGEO 3 , Munich 2004. 3 rd European Conference on Geosynthetics. Geosynthetic reinforced high railway embankment: Design & monitoring Matys M., Turinič L., Baslik R. Presented Ing.Turinič. Situation plan . II. Bratislava. I. Trnava. III.
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EUROGEO 3 , Munich 2004 3rd European Conference on Geosynthetics Geosynthetic reinforced high railway embankment: Design & monitoringMatys M., Turinič L., Baslik R. Presented Ing.Turinič
Situation plan II. Bratislava I. Trnava III.. 3rd European Conference on Geosynthetics
Geologicalconditions • Quaternary (upper part) – loam, clay, sandy clays,clay with ogranic matter , konsistency stiff to slurry, middle and high plasticity • Neogene – calcareus and sandy clays, high plasticity clays with layers of sand • Water table : 0.5 to1.5m under terrain 3rd European Conference on Geosynthetics
Requirements of Slovak Railways • Minimize a total settlement and differencial settlement in cross direction • Solve transient zone between embankment and bridge • After finishing a viaduct the transportation will start without any limitations 3rd European Conference on Geosynthetics
FEMmodel 3rd European Conference on Geosynthetics
Settlement versus time Construction without filling breaks led to the collapse of embankment. 3rd European Conference on Geosynthetics
Excess of pore pressure versus time of construction 3rd European Conference on Geosynthetics
Geosynthetic materials 10.4m Stiff uniaxial geogrid 40 and 55 kN/m 8 – 11 m Vertical prefabricated drains: Width 100mm, Thickness 3 mm PP filter, Tensile strength 2.2kN Discharge capacity buckled 50.10--6 m3/s Geocell mattrace : Uniaxial stiff geogrid 80 kN/m Biaxial geogrid 30 kN/m 3rd European Conference on Geosynthetics
Instrumented section No. 4 3rd European Conference on Geosynthetics
IS-1 Pore water pressures 80 piezometer, 10 m -11,0 kPa 50 pore pressure (kPa) piezometer, 5 m - 9,7 kPa piezometer, 3 m 10 - 9,5 kPa date (2003 year) 3rd European Conference on Geosynthetics
IS-4 Subsurface settlement maximum compression soft soil depth (m) 3rd European Conference on Geosynthetics compression (mm/m)
IS-4 settlement (mm) Dec. 2, 2003 3rd European Conference on Geosynthetics
Thank you for your attention. Turinič L.