Parametric model of structural system

structural-modelIn order to analyze the relation between form and forces, we have modeled a bridge segment. Each bridge segment is a closed structural system supported vertically at the ends. The continuity of the cables from segment to segment serves only visual purpose. This model has shown us, that this visual continuity can only be maintained in a “front view” like when looking at the bridge from afar.

At this state, the model does not contain structural analysis. Only the geometry is defined. Hopefully the structural analysis will be added during the next few days.

All geometry is parametric, meaning that all parts are interdependent and can be altered and adjusted to meet structural demands from the analysis. The width of the bridge deck, the radius of the bridge segment curve, and the horizontal and vertical translation of all bridge parts are controlled by the smallest possible number of inputs. Also, the weight of the bridge deck in Newton/m2 and the cable tension are defined parametrically in the model.

The ribs are approximations of the ribs found in Staad pro. The spacing between the ribs, the thickness and the density can be changed freely. The volume and volume centroid of each rib (center of gravity) are calculated by the program from the geometry and inputs and are put into the static calculations.


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