Research on Cost-oriented Modeling and Optimization for Highway Alignment

Highway Alignment Optimization Using Cost-Benefit Analysis Under User Equilibrium

Usually, selection of a highway alignment depends on an economical route that minimizes alignment sensitive costs, such as construction cost, user cost, right-of-way cost, and earthwork cost. Most of the available highway alignment optimization algorithms do not consider traffic assignment and distribution of traffic as a result of the new road network consisting of the new alignment as well as...

Life Circle Cost Minimizing Modeling for Highway Alignment base on Genetic Algorithm

Highway alignment design is always treated as a complicated multi-objective related question which can be solved by a life circle cost minimization model. Life circle cost minimization model, involves main cost-related factors considered in highway alignment design, is discussed in this paper. A new genetic algorithm with a powerful genetic operator for alignment design is proposed for this mod...

Effect of Objective Function on the Optimization of Highway Vertical Alignment by Means of Metaheuristic Algorithms

The main purpose of this work is the comparison of several objective functions for optimization of the vertical alignment. To this end, after formulation of optimum vertical alignment problem based on different constraints, the objective function was considered as four forms including: 1) the sum of the absolute value of variance between the vertical alignment and the existing ground; 2) the su...

OPTIMIZATION OF VERTICAL ALIGNMENT OF HIGHWAYS IN TERMS OF EARTHWORK COST USING COLLIDING BODIES OPTIMIZATION ALGORITHM

One of the most important factors that affects construction costs of highways is the earthwork cost. On the other hand, the earthwork cost strongly depends on the design of vertical alignment or project line. In this study, at first, the problem of vertical alignment optimization was formulated. To this end, station, elevation and vertical curve length in case of each point of vertical intersec...

Models for Highway Cost Allocation