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工程项目进度、成本和质量三者是对立统一的,工程项目的多目标优化着重于求解三者的和谐统一。以工程项目施工过程中的进度、成本和质量水平阈值为约束条件,运用集对分析法为建筑工程多目标优化问题的处理构建了柔性的建模框架;利用NSGA-II算法求解多目标优化模型,得到多目标优化的Pareto最优解集;通过实际算例验证了该算法在解决工程项目多目标优化问题中的可行性和有效性。
Project progress, cost and quality of the three are unity of opposites, multi-objective optimization of the project focused on solving the harmony of the three. Taking the progress, cost and quality level threshold of construction project as the constraint conditions, the set-pair analysis method is used to construct a flexible modeling framework for the construction engineering multi-objective optimization problem. The NSGA-II algorithm is used to solve the multi-objective optimization model , A Pareto optimal solution set with multi-objective optimization is obtained. The feasibility and effectiveness of this algorithm in solving multi-objective optimization problems of construction projects are verified through practical examples.