基于组合赋权法的大体积清水混凝土饰面施工方案评估及应用

大体积混凝土在施工过程中容易受到不同程度污染、混凝土体表面不平整及外观质量不够美观等问题的影响，综合考虑经济性、美观性、环保性及技术可行性等技术指标，如何选择最优的饰面方案成为施工质量保障的重要考量。为此，基于层次分析法的组合赋权方法计算主观权重，采用粗熵法计算客观权重。通过计算权重偏好系数误差得到组合权重，并结合合作博弈方法和最小偏差为目标确定组合权重进行评价。以嘉陵江梯级渠化利泽航运枢纽船闸工程为例，从基面处理、材料配合比优化及保护材料涂装等工序上对多个方案进行比选，所采用的模型计算得出饰面清水混凝土施工选择58.35% 的权重值为最优方案。在实际投入使用后明显改善了船闸混凝土体的外观质量，以期为其他类似工程项目提供参考。

Evaluation and application of mass fair-faced concrete decorative surface construction scheme based on combination weighting method

In the construction process,mass concrete is prone to varying degrees of pollution,uneven concrete surfaces,and inadequate aesthetic quality.When considering a combination of technical criteria such as economy,aesthetics,environmental friendliness,and technical feasibility,selecting the optimal decorative scheme has become a important consideration for ensuring construction quality.Therefore,this paper utilizes a combination weighting method based on the Analytic Hierarchy Process to calculate subjective weights and employs the rough entropy method to calculate objective weights.Furthermore,by calculating the error of weight preference coefficient,the combination weight is obtained,and an combined with cooperative game metod and minimum deviation as the objective,the combination weight is determined for evaluation.Taking the Jialing River Cascade Canalization Lize Navigation Hub Shiplock Project as an example,multiple schemes are compared,and selected from the processes of foundation treatment,material mix ratio optimization,and protective material coating.The model used calculated that the imitation clearwater concrete coating construction,with a weight value of 58.35%,is selected as the optimal scheme.After being put into practical use,the appearance quality of the ship lock concrete is significantly improved,in order to provide reference for other similar engineering projects.