基于模糊理论的地铁结构安全评估研究

随着地铁隧道的运营，地铁结构出现的安全问题也将越来越多。通过研究影响地铁结构安全的因素，确定了适于上海软土地区的、能够全面反映盾构隧道结构受力特点的、并综合考虑使用功能的评估指标，确立运营期地铁结构安全评估指标体系，利用模糊综合评判、层次分析法和模式识别理论，建立了地铁结构安全评价模型，并通过典型实例进行定量化综合分析评价。通过运营期地铁结构安全评估指标体系和评价方法的研究和探索，对正确评价地铁结构运营安全现状、修正偏差、提高地铁系统安全总体水平具有十分重要的意义。

Study on Safety Assessment Index System for Subway Structure Based on Fuzzy Theory

With the operation of the subway tunnel, more and more safety problems will appeare. Considering the selection principles of the evaluation index and the causes of safety problems existed in the shield tunnel structure, the paper determinates the evaluation index and establishes the safety assessment index system for subway structure which can be applied in Shanghai soft-soil areas and reflects the stress characteristics of the shield tunnel structure comprehensively. Applying the fuzzy comprehensive evaluation, the analytical hierarchy process and the pattern recognition theory, the paper then establishes the evaluation model of the subway structure and conducts the quantitative synthetic analysis and evaluation through a typical example, Very important significance will be made to evaluate the safety situation of the subway structure,modify the deviation and improve the overall safety level of subway system.