A 3D Model for Optimizing Infrastructure Costs in Road Design
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Abstract
In this article, the optimal design of a road joining two terminals is investigated. A geometric model is proposed including horizontal transition curves and vertical curves, obtaining parameterizations for the central axis of the road as well as for its entire surface. These parameterizations allow to express and compute, with great simplicity, the major infrastructure costs, including land acquisition, clearance, pavement, maintenance, and earthwork, where multiple layers of materials with different costs can be handled. The road design problem is formulated as a smooth constrained optimization problem and a two-stage algorithm is suggested for its numerical resolution. Finally, numerical results are presented in an academic test and in a case study that propose designing a bypass in a Spanish national road (N-640) to avoid crossing Monterroso's town center
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This is the peer reviewed version of the following article: Vázquez‐Méndez, M. E., Casal, G., Santamarina, D., & Castro, A. (2018). A 3D model for optimizing infrastructure costs in road design. Computer‐Aided Civil and Infrastructure Engineering, 33(5), 423-439 , which has been published in final form at https://doi.org/10.1111/mice.12350.
Bibliographic citation
Vázquez‐Méndez, M. E., Casal, G., Santamarina, D., & Castro, A. (2018). A 3D model for optimizing infrastructure costs in road design. Computer‐Aided Civil and Infrastructure Engineering, 33(5), 423-439
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https://doi.org/10.1111/mice.12350Sponsors
First author thanks the support given by Project MTM2015-65570-P of MEC (Spain) and FEDER. Third author thanks the support given by Project MTM2017-86459-R.
The authors are also very grateful to the Editor and the six anonymous reviewers for their very valuable suggestions.
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