This final tutorial consists of the modelling of a pedestrian bridge on Grasshopper. It is located in Porto, Portugal, under Arrábida Bridge, in a place where, nowadays, people can’t go from one side of the bank to the other, unless they catch a boat. The idea was to create a simple but dynamic structure, based on the big arch of the main bridge and following the rhythm of its structure.
For this project, there were four different phases, which are intertwined:
- The bridge board, using an extruded curve turned into a brep and some plug-ins, such as Isotrim, Construct Domain2, Deconstruct Brep and List Item;
- The big metal arch, shaped with hexagonal Perpendicular Frames, and made of an interpolation;
- The piped beams, which contribute to a stable arch;
- The cables, connecting the arch to the bridge board, permitting a hanging structure, with no need of pillars crossing the bridge.
- THE BRIDGE BOARD
- THE METAL ARCH
- THE BEAMS
- THE CABLES
Grasshopper file: Antonio-Rocha-Leite_Pedestrian-Bridge
Rhino file: Antonio-Rocha-Leite_Pedestrian-Bridge