基于可能度的区间型指标基坑支护方案优选  

Optimization of Foundation Pit Support Scheme with Interval Index Based on Possibility Degree

作　　者：王望珍[1] 任美玲 易琪 邹美伦 WANG Wangzhen;REN Meiling;YI Qi;ZOU Meilun(School of Civil Engineering,Wuhan University,Wuhan 430070,China)

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]中科院武汉岩土力学研究所,湖北武汉430071 [3]深圳市华地岩土工程有限公司,广东深圳518110

出　　处：《武汉理工大学学报（信息与管理工程版）》2019年第5期485-490,共6页Journal of Wuhan University of Technology：Information & Management Engineering

摘　　要：基坑支护方案的正确选择对工程质量、施工风险、成本控制和环境保护等方面起着决定性的作用。针对基坑支护工程中评价指标取值的不确定性特点,采用区间值表示指标属性值,建立了基于可能度排序方法的方案优选模型。采用区间层次分析法和熵权法确定区间值的主客观权重,利用线性组合规划进行组合赋权得到综合权重,然后建立可能度互补矩阵计算出可能度排序结果,最后结合工程实例进行实证计算及灵敏度分析,结果表明提出的决策模型具有一定的可行性和合理性。The correct choice of foundation pit support scheme plays a decisive role in engineering quality,construction risk,cost control and environmental protection.According to the uncertainty characteristics of the evaluation index in the foundation pit support engineering,the interval value is used to represent the index attribute value,and the scheme optimization model based on the possibility degree ranking method is established.In this paper,the interval analytic hierarchy process and entropy weight method are used to determine the subjective and objective weights of the interval values.The linear combination plan is used to combine the weights to obtain the comprehensive weights,and then the possibility degree complementarity matrix is established to calculate the possible ranking results.Finally,the empirical calculation and sensitivity analysis are carried out in combination with engineering examples.The results show that the proposed model has certain feasibility and rationality.

关 键 词：基坑支护 区间数 区间层次分析 熵权法 可能度 灵敏度分析 

分 类 号：TU12[建筑科学—建筑理论]