Nemetschek Engineering User Contest 2009 • Category 3: CAE Civil Works 127 3 Bicyclist and pedestrian bridge, Beernem the calculation of cracked-uncracked concrete. The possibility of calculating mixed section and of the use of graphical section by ESA-Prima Win was a big advantage. Second, there was the limitation of the reactions on the bridge end supports. Also here ESA-Prima Win proved its possibilities. Third, there was the simulation of the realistic behaviour of the cables. The cables were simulated as classic bars, but with the E-modules of the tension bar material in relation to the inclination of the tension bars (this means they were considered as cables with a fictive E-modulus). Because the linear calculations resulted in compression in the tension bars a non linear calculation was needed. Fourth, there was a second order calculation needed for the check of asymmetrical pylon based on a stability calculation. Fifth, for the erection engineering the different construction stages had to be examined and a severe erection and pretensioning manual for the mounting of the cables was needed. This to achieve the theoretical form of the bridge deck. Sixth, the dynamic behaviour of the bridge was to be checked. Description of how our experience with ESA-Prima Win proved its completeness • Dimensioning a 3D structure consisting of different materials (steel, concrete). • The possibility of using and combining the results of ESA-Prima Win in a flexible way. • The possibility of calculating mixed concrete-steel sections. • The possibility of calculating graphical sections. • The possibility of using tension only elements for the modelling of the cables. • Stability calculation and second order calculations. • Checking the dynamic behaviour of the structure by calculating the eigenvalues of the structure. This project proves the great diversity of ESA-Prima Win in checking the structure and the use of materials. Used modules • Base • 3D frame • Dynamics • Steel code check (NEN) • Stability • Physical non linear conditions
RkJQdWJsaXNoZXIy MTgyMDE=