考虑活动随机中断的线性工程项目多目标进度计划优化研究

Research on Multi-objective Scheduling Optimization of Linear Engineering Projects Considering Random Activity Interruptions

摘要:

铁路工程建设面临众多不确定性因素,中断是不可避免的突发事件,其进度计划的反应性调整意义重大。针对铁路工程的线性特征,构建考虑时间调整成本和资源波动成本的双目标反应性调度优化模型,设计改进的遗传算法对活动的施工模式和开始时间进行决策。案例研究表明模型能够有效地优化反应性调整成本并均衡资源；通过随机算例指出了中断时间点对进度计划的影响,为实施过程中进度计划的调整提供方法论支撑。

Abstract:

Railway construction projects face numerous uncertainties, and interruptions are inevitable contingencies, making the reactivity adjustment of the schedule highly significant. Aiming at the linear characteristics of railway projects, this study constructs a bi-objective reactive scheduling optimization model that considers both time adjustment costs and resource fluctuation costs. An improved genetic algorithm is designed to optimize the construction mode and start time of activities. Case studies demonstrate that the model can effectively optimize reactive adjustment costs and balance resources. Random cases highlight the impact of interruption timing on the schedule, providing methodological support for schedule adjustments during implementation.