基于Vague-Fuzzy理论的深基坑支护方案评价应用

Based on Vague-Fuzzy Theory Model for Evaluating the Retaining Plan of Deep Excavation

深基坑支护决策是典型的非结构或半结构决策问题,对其进行量化研究对于实现工程方案的科学决策具有重要的理论意义与实践价值.采用基于Vague-Fuzzy理论的深基坑支护决策评价方法.在研究评价指标Vague值确定方法的基础上,建立了Vague集近似转化为Fuzzy集的方法与模型,得到的模糊隶属度并可根据参数k的数学性质有目的地进行调整,从而实现深基坑支护决策的模糊评价.以某大厦深基坑支护拟采用的4种方案评价为例,对所建模型进行了实例研究,结果表明该方法是科学、实用的.

decision making deep excavation is a typical non-structural or semi-structured decision problems, quantitative studies of its engineering program for the realization of the scientific decision-making has important theoretical significance and practical value. In this paper, the theory based on Vague-Fuzzy decision-making evaluation of deep excavation methods. Vague value in the study to determine methods of evaluation, based on Vague Set Approximation built into Fuzzy set methods and models, and can get the fuzzy membership parameter k according to the mathematical nature of the destination to adjust in order to achieve deep foundation Fuzzy evaluation supporting decision-making. To deep excavation of a building used to be four kinds of program evaluation, for example, on the model made a case study, the results show that the method is scientific and practical.