CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

id 2005_647
authors Caldas, Luisa G.
year 2005
title Three-Dimensional Shape Generation of Low-Energy Architectural Solutions using Pareto Genetic Algorithms
source Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 647-654
summary This paper extends on a previous work on the application of a Generative Design System [GDS] to the evolution, in a computational environment, of three-dimensional architectural solutions that are energy-efficient and adapted to the climatic environment where they are located. The GDS combines a well-known building energy simulation software [DOE2.1E] with search procedures based on Genetic Algorithms and on Pareto optimization techniques, successfully allowing to tackle complex multi-objective problems. In the experiments described, architectural solutions based on a simplified layout were generated in response to two often-conflicting requirements: improving the use of daylighting in the space, while controlling the amount of energy loss through the building fabric. The choice of a cold climate like Chicago provided an adequate framework for studying the role of these opposing forces in architectural form generation. Analysis of results shows that building characteristics that originate successful solutions extend further than the building envelope. Issues of massing, aspect ratio, surface-to-volume ratio, orientation, and others, emerge from the analysis of solutions generated by the GDS, playing a significant role in dictating whether a given architectural form will prove adapted to its climatic and energy requirements. Results suggest that the questions raised by the exploration of form generation driven by environmental concerns are complex, deserving the pursuit of further experiments, in order to better understand the interaction of variables that the evolutionary process congregates.
keywords Generative Design System, Genetic Algorithms, Evolutionary Architecture, Artificial Intelligence in Design, Building Energy Simulation, Bioclimatic Architecture, Environmental Design.
series eCAADe
email luisa@civil.ist.utl.pt
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100%; open Caldas, L and Norford, L (2002) Find in CUMINCAD Energy design optimization using a genetic algorithm , Automation in Construction, 11(2), pp. 173-184
100%; open Caldas, L and Rocha, J (2001) Find in CUMINCAD A Generative Design System Applied to Siza’s School of Architecture at Oporto , Proceedings of CAADRIA’01, Sydney, April 19-21, pp. 253-264
100%; open Caldas, L. and Norford, L. (2004) Find in CUMINCAD Shape Generation Using Pareto Genetic Algorithms: Integrating Conflicting Design Objectives in Low-Energy Architecture , International Journal of Architectural Computing, 1(4), pp. 503-515
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100%; open Shea, K., Aish, R., Gourtovais, M. (2003) Find in CUMINCAD Towards integrated performance-based generative design tools , eCAADe 03, 21st Conference on Education in Computer Aided Architectural Design in Europe, Graz University of Technology, Austria, pp. 553-560
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