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基坑支护方案决策受决策者的风险态度和指标的随机模糊性影响与控制,是一个复杂的不确定性决策难题。应用联系数与累积前景理论的耦合方法,探讨了基坑支护方案的联系累积前景理论优选新模型,即首先基于原始规范化的决策信息确定正、负理想方案,再基于联系数理论定量统一描述待选方案与正、负理想方案间的确定和不确定关系,以构建基于联系前景效用价值函数的综合决策模型,并求解最优的权向量,确定合理的基坑支护方案。实例应用和与其他方法结果对比表明,文中方法应用于基坑支护方案优选是有效可行的,且能定量表达待选方案与理想方案间的联系和转化态势,避免了基坑支护方案决策过程的非理性。
The decision-making of the foundation pit support scheme is affected by the risk attitude of the decision makers and the random ambiguity of the indicators. It is a complicated problem of decision-making with uncertainties. The coupling theory of the number of the contact and the cumulative foreground theory is applied to discuss the new model of optimizing the cumulative prospect theory of the foundation pit supporting scheme. First, the positive and negative ideal solutions are determined based on the original normalized decision information, and then the quantitative unified description And the positive and negative ideal solutions to determine the relationship between the uncertainty and uncertainty, in order to build a comprehensive decision-making model based on the contact value function of the future utility, and to solve the optimal weight vector to determine a reasonable foundation pit support program. The comparison between application examples and other methods shows that the method proposed in this paper is effective and feasible for the foundation pit supporting scheme and can quantitatively express the connection and transformation between the candidate scheme and the ideal scheme and avoid the decision of foundation pit support scheme Irrational process.