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3ree way bridge is a design proposal for a pedestrian bridge in front of the Heritage Museum in Amsterdam. The initial principle for the design of the bridge is based on a class of self-supporting structures made of 3 or more beam elements called reciprocal frames. Such a design requires no central support while it forms a central plateau for various uses at the beam convergence area.
The structural principle is 3 main steel beams leaning on each other with no other connection needed, while they span a 90m long distance. The use of the appropriate elastomeric bearings and stoppers at the beam intersections is necessary to prevent the frame from any sliding effects. In order for the bridge to maintain its lightness and a certain transparency, the main structure design is translated into a more complex formation where a composite steel element is formed, consisting of a rectangular solid beam section and a triangle-like element pattern – “soft framework” – with various dimensions
The wide area defined through the beam intersections makes possible the inclusion of a variety of spaces, activities and uses.
The design process, as opposed to a rigid, top-down approach, followed a mixed method of designing the bridge structure. The idea of the reciprocity of the main beams along with the evolution of a “soft framework” (based on a triangle-like element pattern controlled parametrically), produces a structure which is more loosely defined, reducing constraints and resulting in a series of variant ways to finalize the design.
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| design: | Dimitris Gourdoukis, Vassilis Papakonstantinou |
| date: | 2012 |
| publications: | — in Panel Layout for Competition v.2 (Seoul: DAMDI Publishing Co., 2016) |