基于改进AHP与熵权法的膨胀土胀缩等级云模型评价  

Cloud model evaluation of swell-shrink grade of swelling soil based on improved analytic hierarchy process and entropy weight method

作　　者：阮永芬[1] 高春钦 李志伟[2] 刘克文[3] RUAN Yongfen GAO Chunqin LI Zhiwei LIU Kewen(Facuhy of Civil Engineering and Mechanics, Kunming University of Science and Technology Kunming, Yunnan 650500, China Branch of Yunnan Design Institute Group, Kunming Yunnan 650228, China 14th Metallurgical Construction Corporation Yunnan Survey and Design Co. , Ltd, Kunming, Yunnan 650031 , China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500 [2]云南省设计院集团勘察分院,云南昆明650228 [3]十四冶建设云南勘察设计有限公司,云南昆明650031

出　　处：《江苏大学学报（自然科学版）》2017年第2期218-223,共6页Journal of Jiangsu University：Natural Science Edition

基　　金：教育部博士点基金资助项目(KKQS201306007);国家自然科学基金联合基金资助项目(KKGL201606001P)

摘　　要：利用云模型、改进层次分析法与熵权法对膨胀土胀缩等级进行评价,主要采用了液限、胀缩总率、塑性指数、天然含水率和自由膨胀率等5个评价指标,并以15个膨胀土实测数据作为实例进行研究.首先根据胀缩性等级分类标准,生成每个评价标准的云数字特征,建立各评价因子的云模型;然后结合综合权重值,计算出综合确定度;最后综合确定度值最大的级别即为该膨胀土的胀缩等级.云模型的评价结果与未确知测度法、物元可拓模型和变权靶心贴近度法的评价结果有较好的一致性,且该方法具有较高的分类精度.The swell-shrink grade of swelling soil was evaluated based on the cloud model, the improved analytic hierarchies process and the entropy weight method. The five evaluation indicators of liquid limit, swell-shrink total rate, plasticity index, natural moisture content and free swelling ratio were used to investigate 15 swelling soil samples. The cloud digital characteristics of each evaluation criterion were generated based on the swell-shrink grade classification standard, and each evaluation indicator cloud model was established. According to the calculated weights by component weighting method, the comprehensive certainties were obtained. The corresponding quality degree was determined as shrink and expansion grade of swelling soil. The cloud model results show good consistence with the results of certainty measurement method, matter-element extension model and approaching in variable weight. The cloud model method can provide reference for similar engineering problems with high classification accuracy.

关 键 词：云模型 胀缩等级 改进层次分析法 改进熵权法 确定度 距离函数 

分 类 号：TU433[建筑科学—岩土工程]