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在高速公路修建过程中 ,遇到软土时 ,需要做出是否处理和采用什么方法处理的技术决策。在讨论了高速公路软基处理的决策过程、MATLAB FIS的建模方法和对高速公路软基处理决策问题进行系统分析的基础上 ,建立了基于MATLAB FISTool的高速公路软基处理模糊决策系统模型结构 ,这一模型包括 3个输入变量 :路基填土高度、软土层厚度和初始孔隙比 ;1个输出变量 :处理方法。利用隶属度函数编辑器建立了输入和输出变量的隶属函数 ,输入变量的隶属度函数为双侧高斯型函数 ,输出变量的隶属度函数为梯形函数。利用规则编辑器建立了 4 5条推理规则。结合苏嘉杭高速公路公路江苏段软基处理工程进行了实例研究 ,得到了满意的结果
In the process of highway construction, when encountering soft soil, it needs to make technical decision whether to deal with and what method to adopt. After discussing the decision-making process of expressway soft foundation treatment, the modeling method of MATLAB FIS and the system analysis of decision-making of soft foundation treatment of expressway, the model structure of fuzzy decision-making system for soft ground treatment of expressway based on MATLAB FISTool This model includes three input variables: subgrade fill height, soft soil layer thickness and initial void ratio; 1 output variable: treatment method. The membership function of input and output variables is established by membership function editor. The membership functions of input variables are bilateral Gaussian functions, and the membership functions of output variables are trapezoidal functions. We use rules editor to establish 45 inference rules. Combined with the Sujiahang Expressway Jiangsu section soft foundation treatment project conducted a case study, and obtained satisfactory results