85
Category 2: Civil Structures
2
“Verlengde Waal Brug” - Lent, The Netherlands
SE
AP
Owner
Gemeente Nijmegen
Architect
Zwarts en Jansma
General Contractor
i-Lent
Engineering Office
Witteveen+Bos
Construction Period 07/2013 - 12/2015
The “Verlengde Waalbrug” is an in-situ post-tensioned concrete bridge
with a total length of 275 m. With its spectacular double curved lower shell
and hybrid foundation, several challenging problems had to be solved.
The project succeeded by combining the strengths of Allplan Engineering
and SCIA Engineer in a BIM environment. Slices of the Allplan 3D organic
model were transported to SCIA Engineer where the complex geometry
of the structure was generated with 3,200 shell elements. SCIA Engineer
offers the option to combine advanced geometric modelling with all
kind of loads, powerful post-processing tools and transparent reporting
capabilities all in one model.
With SCIA Engineer the interaction between the hybrid foundation and
the bridge was investigated, resulting in optimal dimensions. By using
the integration function in SCIA Engineer the forces in the longitudinal
direction were extracted such that simple cross-sectional checks could
be performed, leading to a transparent and verifiable calculation. The
dimensions could be quickly tuned with the acting loads. By modelling
the bridge deck with shell elements, the beneficial effect of the lower shell
acting as a compression arc is taken into account, reducing the amount of
reinforcement required. The designed reinforcement in Allplan was used
directly, shortening the production path.
Witteveen+Bos
Contact
Wouter Claassen, Arjan Luttikholt,
Tim Neurink
Address Leeuwenbrug 27
7411 TE Deventer, The Netherlands
Website
Witteveen+Bos offers its clients value-added consultancy and top-quality
designs. Over the years, road, rail and hydraulic engineering have
created infrastructures characterized by both their large scale and their
sophistication. In contrast with these huge projects there are many smaller
ones that tend to be invisible to the user. What large and small have in
common, however, is the combining of existing and new technologies
under highly differing local conditions. At numerous levels Witteveen+Bos
has contributed to this development.
