Advanced optimization methods for road construction

道路建设先进优化方法

• 批准号: 479316-2015
• 负责人: Lucet, Yves
• 金额: $ 2.44万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=580020
• 关键词: Advanced; optimization; methods; road; construction

Road construction represents a significant portion of supporting an efficient road network. Highway quality roads cost as much as $20 million per km while forestry roads costs from $1,000 to $1 million per km. Reducing road construction costs while maintaining safety standards is very desirable. Road design has also become increasingly more complex. It now has to take into account environmental impact, mitigation of the impact of natural or man-made disasters. Reducing road construction costs may play a major role in controlling future budgets and maintaining quality of life, both in Canada and in any developed country. The road design problem is usually split into three subproblems. First, the horizontal alignment considers a satellite view of the potential road site, selects a handful of corridor alternatives, and determines the exact path within that corridor. Next the vertical alignment considers which hill to cut or ravine to fill to build a road that goes through the horizontal alignment while satisfying safety and regulation constraints. Finally, the earth moving problem considers how much material to move to realize the target vertical alignment. Our goal is to automate much of the current manual process to save design engineers time on computational tasks so (s)he can concentrate on considering as many constraints as possible. We plan to fully automate the full road design process from corridor selection to earthmove decisions. Our approach focuses on improving computation time to solve the vertical alignment model so we can perform an extensive search for the cheapest horizontal alignment. We will incorporate additional features into current models to more precisely reflect the building process. While the complete problem is out of reach of current state-of-the-art optimization solvers, the latest optimization algorithms coupled with carefully approximation will provide much chearper road designs, allow engineers to consider a wider range of alternative paths, and provide insight into the robustness of the solution. The resulting models and algorithms will be implemented and deployed in a commercial road design software, and made widely available.

道路建设是支撑高效道路网络的重要组成部分。高质量公路每公里的造价高达2000万美元，而森林公路每公里的造价为1000万至100万美元，在保持安全标准的同时降低道路建设成本是非常可取的。道路设计也变得越来越复杂。它现在必须考虑到环境影响、减轻自然或人为灾害的影响。无论是在加拿大还是在任何发达国家，减少道路建设费用可能在控制未来预算和维持生活质量方面发挥重要作用。