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A mixed-integer linear programming model to optimize the vertical alignment considering blocks and side-slopes in road construction

机译:混合整数线性规划模型,用于在道路施工中考虑砌块和边坡来优化垂直路线

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In the vertical alignment phase of road design, one minimizes the cost of moving material between different sections of the road while maintaining safety and building code constraints. Existing vertical alignment models consider neither the side-slopes of the road nor the natural blocks like rivers, mountains, etc., in the construction area. The calculated cost without the side-slopes can have significant errors (more than 20 percent), and the earthwork schedule without considering the blocks is unrealistic. In this study, we present a novel mixed integer linear programming model for the vertical alignment problem that considers both of these issues. The numerical results show that the approximation of the side-slopes can generate solutions within an acceptable error margin specified by the user without increasing the time complexity significantly. (C) 2014 Elsevier B.V. All rights reserved.
机译:在道路设计的垂直对齐阶段,可以在保持安全性和建筑规范约束的同时,将在道路不同部分之间移动物料的成本降至最低。现有的垂直路线模型既不考虑道路的边坡,也不考虑建筑区域中的自然块如河流,山脉等。不带边坡的计算成本可能会有很大的误差(超过20%),并且不考虑砌块的土方计划是不现实的。在这项研究中,我们针对垂直对齐问题提出了一个新颖的混合整数线性规划模型,该模型同时考虑了这两个问题。数值结果表明,边坡的近似值可以在用户指定的可接受误差范围内生成解,而不会显着增加时间复杂度。 (C)2014 Elsevier B.V.保留所有权利。

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