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All-composite superstructure for overground pedestrian over passes MOBISTEK
All-composite superstructure for overground pedestrian over passes MOBISTEK
All-composite superstructure for overground pedestrian over passes MOBISTEK
All-composite superstructure for overground pedestrian over passes MOBISTEK
All-composite superstructure for overground pedestrian over passes MOBISTEK

All-composite superstructure for overground pedestrian over passes MOBISTEK

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  • MOBISTEK all-composite bridge span is made of polymer composite materials by vacuum infusion.

     

  • Technical and economical efficiency of using composite bridges

    (cost of constructing a ferro-concrete bridge is taken as 100%)

     

    Features  Bridge superstructures of ferro-concrete and metal Bridge superstructures of composite materials
    Long lifetime 60-80 years >100 years
    Building costs including materials 100% 80-90%
    Maintenance and report throughout the fist 35-40 years of operational use 35-50%  of initial cost 15%  of initial cost
    Final cost inclusive of operational expenditure within 25 years 135-150%

    95-105%

     

    Expenses on erection and use of a ferro-concrete bridge for the whole period are twice the analogous expenses for a composite bridge, economic benefit equals to 40-45%.

    The calculation of cost efficiency when using composite superstructures is given according to Guidelines on analyzing cost-effectiveness of using innovations and scientific-and-technological advances in public road system, approved by order of RF Ministry of Transportation as of 10.12.2002 №ОС-1109-р.

     

     

    Standard design of a composite bridge span:

     

     

    Dimensions Radius Materials
    • Span length is max 30 m

    • Width may vary up to 3 m by increments of 25cm

    In positive correlation with length of a span. A 33m-long span may have a 60cm deflection

    Glass fiber and polyester resin

     

     

  • Typical application:

    foot-bridge spans and overpasses.

     

    This production technique enables manufacture of composite bridges for pedestrians and bike riders, composite bridges for motor vehicles.

     

  • Advantages:

    Reduced period of construction

    • manufacturing plant is capable of manufacturing a bridge span at a single process step without further assembling
    • the superstructure is completely made of composite material without bolt connections, which enhances reliability of a whole structure

     

    Reduced cost of construction

    • saving in supporting parts due to minor thermal elongation and relatively low weight of superstructures
    • easy installation

     

    Reduced cost of useful life, extended inter-maintenance periods

    • high resistance to corrosion and aggressive environments,
    • no need to apply paint-and-lacquer coating

     

    Improved performance characteristics

    • extended service life
    • resistant to corrosion
    • aggressive media and vandalism
    • not bendable
    • not deformable when exposed to high temperatures
    • not decayable
    • resistant to fungus
    • highly fire-resistant
    • owing to low specific weight of the material
    • lower pressure is applied to supports, so capital cost of the supports is reduced

     

    Implementation of various design ideas

    • aesthetic qualities,
    • customized manufacturing possible,
    • multiversioned as per architectural concepts

     

    Actual service life of an all-composite bridge superstructure is 100 years at almost zero cost of maintenance during operational use