基于联系累积前景理论的基坑支护方案决策

发布时间：2018-06-03 17:04

  本文选题：基坑支护方案 + 决策　； 参考：《岩土力学》2016年S2期

【摘要】：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。
[Abstract]:The decision of foundation pit support scheme is influenced and controlled by the risk attitude of decision maker and the random fuzziness of index, which is a complicated and uncertain decision problem. By using the coupling method of connection number and cumulative foreground theory, a new model of optimal selection for foundation pit supporting scheme is discussed, that is, the positive and negative ideal schemes are first determined based on the original normalized decision information. Then, based on the connection number theory, the deterministic and uncertain relationships between the selected scheme and the positive or negative ideal schemes are described quantitatively and uniformly, in order to construct a comprehensive decision model based on the utility value function of the linkage foreground, and to solve the optimal weight vector. Determine a reasonable foundation pit support scheme. The results of practical application and comparison with other methods show that it is effective and feasible to apply this method to the optimal selection of foundation pit support schemes, and can quantitatively express the relationship and transformation situation between the alternatives and the ideal schemes. The irrationality of the decision process of foundation pit support scheme is avoided.
【作者单位】： 合肥工业大学土木与水利工程学院;
【基金】：国家自然科学基金(No.41172274,No.71273081)~~
【分类号】：TU473
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本文编号：1973534