The purpose of this tutorial is to illustrate how to model a parametric bridge using Grasshopper (Rhino plug-in)
IDEA SKETCH
REFERENCES
GOAL: The project aims to create a parametric bridge inspired by the dynamic and sinuous structure shown in the reference images. The idea is to create a gangway that is not only a functional element, but also offers a unique visual and spatial experience, characterized by the rhythmic movement of the beams arranged in a helical way.
To achieve this I used Grasshopper, a powerful algorithmic modeling tool that will allow me to design complex geometry in a precise and flexible way. Thanks to the parametric design, it will be possible to experiment with the shape and adapt the structure to the specific needs of the context, varying curvature, spacing and orientation of the structural elements.
The ultimate goal is to create a work that is both functional and scenic, able to integrate harmoniously into the landscape and transform the simple crossing into an engaging and memorable experience.
STEP 1: To start, we created the base from a rectangle, to which we associate its parameters to modify the shape, in my case I choose a rectangle.STEP 2: With the commands move and series we create the series of the rectangle. With the number slider we can manage the distance between rectangles in the series.STEP 3: Now we need to define the shape of the series. To create a sinuous and not regular form we use these instruments: Scale NU and Rotate. Through the 3 Graph Mappers connected with the two previous command, we manage the shape of the series of rectangles, so the operation of these, the curvature of the series. Also the Remap Number command can be an alternative to Graph Mappers forrotate the rectangles. STEP 4: For the creation of the structure in 3D, the Pipe command was used, through Fillet and Number slider modify the thickness and the connection of the structure. With Fillet we decide the shape of the rectangle’s corner. STEP 5: Using the Loft command, you can create a continuous surface from the rotated rectangle. Using Flip Matrix we extract the points that intersect the corners of the squares, this polyline derived from these points forms the anchorage of the rectangles.STEP 6: The final step is to create the parte where people can walk. With the command Brep we can get the points that intersect the rectangles rotated so that they are companary. Using Bounding box we create the parallelepiped and with Extrude we manage teh size of the Box.Example of shapeExample of shapeExample of shapeFinal procedureFinal Render.
