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Application of the entropy technique and genetic algorithms to construction site layout planning of medium-size projects

Lam, K. C., Tang, C. M. and Lee, W. C. (2005) Application of the entropy technique and genetic algorithms to construction site layout planning of medium-size projects. Construction Management and Economics, 23 (2). pp. 127-145. ISSN 0144-6193

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To link to this article DOI: 10.1080/0144619042000202834

Abstract/Summary

Genetic algorithms (GAs) have been introduced into site layout planning as reported in a number of studies. In these studies, the objective functions were defined so as to employ the GAs in searching for the optimal site layout. However, few studies have been carried out to investigate the actual closeness of relationships between site facilities; it is these relationships that ultimately govern the site layout. This study has determined that the underlying factors of site layout planning for medium-size projects include work flow, personnel flow, safety and environment, and personal preferences. By finding the weightings on these factors and the corresponding closeness indices between each facility, a closeness relationship has been deduced. Two contemporary mathematical approaches - fuzzy logic theory and an entropy measure - were adopted in finding these results in order to minimize the uncertainty and vagueness of the collected data and improve the quality of the information. GAs were then applied to searching for the optimal site layout in a medium-size government project using the GeneHunter software. The objective function involved minimizing the total travel distance. An optimal layout was obtained within a short time. This reveals that the application of GA to site layout planning is highly promising and efficient.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Construction Management and Engineering > Business Innovation in Construction
Faculty of Science > School of Construction Management and Engineering > Digital Practices
ID Code:18198
Uncontrolled Keywords:Site-layout, entropy, genetic algorithm, decision-making
Publisher:Taylor & Francis

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