Journal
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES
Volume 65, Issue -, Pages 61-78Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.trc.2016.01.016
Keywords
Road design; Horizontal alignment; Surrogate modeling; Multi-objective optimization; Earthwork cost; Utility costs
Categories
Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC) through Collaborative Research and Development grant - Softree Technical Systems Ltd. [CRDPJ 411318-2010]
- Leaders Opportunity Fund (LOF) from the Canada Foundation for Innovation (CFI)
- British Columbia Knowledge Development Fund (BCKDF)
- University of British Columbia (UBC) through University Graduate Fellowships (UGF)
- [355571-2013]
- [298145-2013]
- [2014-05013]
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Optimization of three-dimensional road alignments is a nonlinear non-convex optimization problem. The development of models that fully optimize a three-dimensional road alignment problem is challenging due to numerous factors involved and complexities in the geometric specification of the alignment. In this study, we developed a novel bi-objective optimization approach to solve a three dimensional road alignment problem where the horizontal and vertical alignments are optimized simultaneously. Two conflicting cost objective functions, earthwork cost and the utility cost, are cast in a bi-objective optimization problem. We numerically compare several multi-objective optimization solvers, and find that it is possible to determine the Pareto front in a reasonable time. (C) 2016 Elsevier Ltd. All rights reserved.
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