Optimizing selection of bridge raft based on fuzzy matter-element model and combination weighting

作     者：Li Feng Shao Fei Wang Jianping Li Zhigang 

作者机构：Engineering College of Engineer CorpsPLA University of Science ＆ TechnologyNanjing 210007 China College of Mechanics and Materials Hohai University Nanjing 210098 China 

出 版 物：《Engineering Sciences》 (中国工程科学（英文版）)

年 卷 期：2012年第10卷第1期

页      面：61-64,96页

学科分类：082802[工学-农业水土工程] 081406[工学-桥梁与隧道工程] 08[工学] 0828[工学-农业工程] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

主　　题：bridge raft optimizing selection fuzzy matter-element combination weighting euclid approach degree 

摘      要：It＇ s a necessary selection to support the maneuver across Yangtze River by floating bridge constructed by portable steel bridge and civilian ships. It is a comprehensive index for the scheme of bridge raft, containing a variety of technical factors and uncertainties. The optimization is the selection in the constructing time, quantity of equipments and man power. Based on the calculation result of bridge rafts, an evaluating system is established, consisting of index of spacing between interior bays, raft length, truss numbers, operation difficulty and maximal bending stress. A fuzzy matter element model of optimizing selection of bridge rafts was built up by combining quantitative analysis with qualitative analysis. The method of combination weighting was used to calculate the value of weights index to reduce the subjective randomness. The sequence of schemes and the optimization resuh were gained finally based on euclid approach degree. The application result shows that it is simple and practical.