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在城市地铁区间施工中,预支护方案的选择涉及诸多因素,本文基于地铁工程的特点,综合应用系统工程的模糊数学识别理论与模糊关系优选理论,建立地铁施工预支护方案选择的多目标多层次模糊决策理论模型,以方案的目标特征值作为最低层次的输入,依次以低层次的输出作为高层次的输入,对每一层次进行模糊计算,最后用级别向量的特征值对各个预支护方案进行排序,得出最优方案。通过算例计算得到比较理想的结果,有效地解决受众多模糊性和不确定性因素影响的地铁施工预支护方案的多目标优化决策问题。
In the construction of metro section of city, the choice of pre-support scheme involves many factors. Based on the characteristics of metro project, this paper synthetically applies fuzzy mathematics identification theory and fuzzy relation optimization theory to establish multi-objective and multi-level Fuzzy decision-making theoretical model, the program’s target eigenvalues as the lowest level of input, followed by low-level output as a high-level input, fuzzy calculation for each level, and finally the level vector eigenvalues for each of the pre-support program Sort, come to the best solution. Through the example calculation, the ideal result is obtained, which can effectively solve the multi-objective optimization decision-making problem of the metro construction pre-support scheme affected by many ambiguities and uncertain factors.