工程项目工期-成本-质量均衡优化

工程项目管理的重要内容之一就是对工程工期、成本、质量等目标进行综合均衡控制,而这三者又是相互关联的矛盾对立统一体,即三大目标中任一目标的增强必然以牺牲其他目标为代价。本文在对比分析了现有文献中关于质量问题的多目标优化模型——质量成本模型、质量可靠度模型、工期-质量曲线模型、赢得值模型等的基础上,提出了基于网络系统可靠度的质量模型,进而改进了工程项目工期-成本-质量三者的均衡优化模型,最后运用该模型对一个工程实例进行优化。在优化过程中,本文采用了基于免疫遗传的微粒群算法(IGPSO),优化结果证明了该模型的可行性和有效性,为项目管理者提供了有效的决策支持。

Time-cost-quality Trade-off Optimization Model of Construction Project

Time-cost-quality trade-off optimization becomes one of the most important problems in project management,because of the contratictory and unified relationship between the three main objectives — time,cost and quality.Based on the research and contrast of the quality models,such as quality-cost model,the quality of the reliability model,time-quality model,earned value model and so on,we propose a new one based on the reliability of network system to deal with the quality problem in the construction project,in the meanwhile,a renewable multi-objective model of time-cost-quality is proposed in this paper.At last,we apply Immune Genetic Particle Swarm Optimization algorithm(IGPSO) to a practical example.The results could verify the feasibility and validity of the new model,which will provide effective decision support for managers.