Vol.7No.3.PDF

Vol. 7 No. 3 Journal of Chongqing University (English Edition) [ISSN 1671-8224] September 2008 Article ID: 1671-8224(2008)03-0191-07 To cite this article: LUO Jun-jun, ZHENG Jun-jie, SUN Ling, ZHANG Shi-biao. An entropy-based multi-criterion group decision analysis method of selecting the optimum weak-subgrade treatment [J]. J Chongqing Univ: Eng Ed [ISSN 1671-8224], 2008, 7(3): 191-197. An entropy-based multi-criterion group decision analysis method of selecting the optimum weak-subgrade treatment ? LUO Jun-jun 1,?, ZHENG Jun-jie 1, SUN Ling 1, ZHANG Shi-biao 2 1 School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China 2 Shiman Expressway Construction Headquarters of Hubei Province, Shiyan 442011, P. R. China Received 24 December 2007; received in revised form 10 May 2008 Abstract: Proper treatment of weak subgrade soil is very important to building a highway of good quality. We proposed an entropy-based multi-criterion group decision analysis method for a group of experts to evaluate alternatives of weak subgrade treatment, with an aim to select the optimum technique which is technically, economically and socially viable. We used fuzzy theory to analyze multiple experts’ evaluation on various factors of each alterative treatment. Different experts’ evaluations are integrated by the group eigenvalue method. An entropy weight is introduced to minimize the negative influences of subjective human factors of experts. The optimum alternative is identified with ideal point discriminant analysis to calculate the distance of each alternative to the ideal point and prioritize all alternatives according to their distances. A case study on a section of the Shiman Expressway verified that the proposed method can give a