3D concrete-printed bridges in North Holland
One parametric model for four bridges
3D concrete-printed bridges in North Holland
The province of North Holland is proactively committed to innovation and sustainability, which is reflected in the construction of four 3D concrete-printed bicycle bridges. Commissioned by BAM, Witteveen+Bos provided both the architectural and structural design for these bridges. We also advise on the engineering and testing of 3D concrete printing (3DCP).
Parametric model as a basis
The bridges are integrated into the unique landscape of the Schermer, Eilandspolder and Beemster (UNESCO World Heritage Site). The bridges form a coherent whole and are also specifically tailored to each location. The bridges in the Beemster are based on the long lines in the open landscape, while the bridge over the Ringvaart marks a transition between two landscapes. The same digital parametric 3D model was used as a design tool for all bridges.
Preconditions
The project is divided into a number of phases. In the first phase, the feasibility of the project was further elaborated. The preconditions that the bridges must meet were inventoried, a programme of requirements for 3D concrete printing was drawn up, and preliminary designs for the four bicycle bridges were made and discussed with the aesthetics committee.
In September 2023, the renovated N243 between Alkmaar and Koggenland was officially opened. The three 3D-printed bridges were also officially put into use at this time. These are the bicycle bridges along the Schermerhornerweg over the Jispersloot, Vrouwensloot, Beemsterringvaart and Voordijksloot.
The longest bridge spans more than 13 metres. During the design process, our engineers paid a great deal of attention to optimising the cross-section and shape in order to limit the use of materials.
Digital construction
Witteveen+Bos has been innovating in the field of digital construction for many years, including the realisation of the first 3DCP bridge in Gemert, the Vergaderfabriek in Teuge and the homes of Project Milestone I and II in Eindhoven. With our innovative design and construction methods, we have helped the province to take this ambition a step further by designing and realising an actual project.
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