VSH Turòa nad Bodvou - Nemetschek Scia

Project: Bicyclist and pedestrian bridge “Het Domein”
Type: Cable stayed mixed concrete-steel bridge
Location: Houten (Utrecht), The Netherlands
Construction firm: Welling
Architect: Grontmij N.V.
Engineering office: Ingenieursbureau STENDESS N.V., Lovendegem,
Belgium
Contractor: S3C/ Zuid Nederlandse constructie en apparatenbouw,
Heyningen, The Netherlands
Total steel weight: ± 65 tons
Total length: 50 m
Building period: 2005
Short description of the project
Because of the growing number of inhabitants, the village of
Houten there was, the need to create new living areas. For this
reason several suburbs were built in the form of leafs around the
centre of Houten. These suburbs are separated by water. To guarantee
an easy access between these suburbs a ‘bicycle and pedestrian
bridge’ was needed.
The bridge can be described as a cable stayed mixed concrete-steel
bridge. Circular transverse beams connected to an asymmetrical
pylon by cables support a mixed concrete-steel bridge deck. The
bridge deck is curved.
The asymmetrical pylon and the curved shape of the deck give, in
combination with cables, a dynamic character to the bridge. The
asymmetrical pylon represents the “gate” to the suburbs.
Use of ESA-Prima Win
Description of technical questions to be solved with
ESA-Prima Win.
Both for the dimensioning of the bridge in the traffic situation as
well as for the erection engineering of the bridge, ESA-Prima Win
was used.
From the point of view of engineering this project was very challenging.
First, there was the fact that the bridge deck was mixed
concrete-steel. This implied a deck calculation in several stages with
different stiffness factors and the calculation of cracked-uncracked
concrete. The possibility of calculating mixed sections and the
use of graphical sections by ESA-Prima Win was a big advantage.
Secondly, there was the limitation of the reactions on the bridge
end supports. Also here ESA-Prima Win proved its possibilities.
Thirdly, there was the simulation of the realistic behaviour of the
cables. The cables were simulated as classic bars, but with the Emodules
of the tension bar material in relation to the inclination
of the tension bars they were considered as cables with a fictive Emodulus.
Because the linear calculations resulted in compression in
the tension bars a non-linear calculation was needed. In the fourth
place, it was necessary to perform a second order calculation for
the check of asymmetrical pylons based on a stability calculation.
Fifthly, for the erection engineering the different construction
stages had to be examined and a severe erection manual for the
mounting of the cables was needed. This was necessary to achieve
the theoretical form of the bridge deck.
And last but not least, the dynamic behaviour of the bridge had 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 ownvalues 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
Bicyclist and pedestrian bridge
Because of the growing number of inhabitants in the village
of Houten there was the need to create new living areas.
For this reason several suburbs were built in the form of leafs
around the centre of Houten. These suburbs are separated
by water. To guarantee an easy access between these
suburbs a ‘bicycle and pedestrian bridge’ was needed.
The bridge can be described as a cable stayed mixed
concrete-steel bridge. Circular transverse beams connected
to an asymmetrical pylon by cables support a mixed
concrete-steel bridge deck. The bridge deck is curved.
The asymmetrical pylon and the curved shape of the deck
give, in combination with cables, a dynamic character to the
bridge. The asymmetrical pylon represents the “gate” to the
suburbs.
Bicyclist and pedestrian bridge “Het Domein”
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