The new Lightrailstation designed by the Dutch architectural firm ZJA Zwarts & Jansma Architects has been erected close to the central station in The Hague. The station floating approximately ten meters above street level is connecting local and long-distance transportation.
A spatial steel structure made out of rectangular hollow section is covering the platforms. The rolled profiles are organized in two independent layers which are rigidly connected to each other. They are arranged in a distance of 1.50m parallel to each and are spanning over the tubular station diagonally from one to the other outer edge of the platform, therefore they need to be double-curved. Since the bent diamond shaped glass panels can only be attached to the outer layer of the steel grid, the glass is two-side supported. The geometry of the double-curved part at the nose of the roof structure is the result of a complex form-finding strategy based on a series of architectural and geometrical requirements as well as fabrication constraints. In order to achieve an economically reasonable solution, it was necessary to find a double-curved geometry that could be covered by single curved glass panels (cylindrical glass).