Step 1 - Generative Design Framework
Step 2 - Generative Design Study
objective, modal above
Design Variables: # of stories, # of spans
Constants:
scale of simplified frame structure (width, height)
load condition
construction cost per length
market value per length
evaluators/outputs:
market value
net benefit
construction cost
reaction force in sub-frame structure
interpretation: in an optimal structural design, we want to minimize base shear in structural elements to prevent large deformation/drift, while maximizing the net benefit. These two objectives conflict, so a trade off is necessary
Step 3 - Generative Design Study Results
The parallel coordinate graph shows the relation between outputs and inputs, demonstrating that the number of stories is positively correlated with both construction cost and market value. Span number has a smaller impact on net benefit within each number of story condition. Generally a higher net benefit is created with more stories and fewer spans. In terms of structural performance, fewer stories and more spans creates lower reaction forces in the structural elements.
The scatterplot shows that higher market values are generally associated with larger reaction forces, but that this force does not vary significantly below 5000, but differs significantly when it exceeds 5000. The optimal solution would be the maximum benefit achieved while keeping the reaction force limited to 5000.
