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1 前 言 公路网改建计划的制订是公路管理中的重大问题,用系统工程的原理来探讨这问题,将归结为一个混合整数规划(MIP)数学模型,需要引用电子计算机程序才能求解。 制订公路网改建计划是公路管理部门经常遇到的问题,如果这些部门的人们掌握用计算机求解这个问题的方法,必然会使他们的决策管理水平大大提高一步,避免计划制订中的盲目性,取得更大的经济效益。 本文汇编了几个有代表性的公路网改建模型,用以说明建立数学模型的方法,并用混
1 Introduction The formulation of road network reconstruction plan is a major issue in highway management. Using the principle of system engineering to discuss this issue, it will be attributed to a mixed integer programming (MIP) mathematical model that requires reference to an electronic computer program to solve the problem. The development of highway network reconstruction plan is a common problem encountered by highway management departments. If people in these departments master the method of using computers to solve this problem, they will inevitably make their decision-making management level be greatly increased and avoid the blindness in plan formulation. Greater economic benefits. This article compiled several representative road network reconstruction model to illustrate the establishment of mathematical models and mixed