基于模糊数学的层次分析法在旧桥加固方案比选中的应用

Application of analytic hierarchy process based on fuzzy mathematics in the matching of old bridge reinforcement schemes

通过某省道上先简支后桥面连续空心板危桥改造方案实例分析,对简支空心板桥梁采用粘贴钢板加固与更换上部全部梁片方案进行分析,引入方案细化指标,结合模糊数学中的语气算子,对专家口语化的评价进行定量化计算。再采用层次分析方法,选取二层指标及权重系数,对两方案进行综合比选,确定最优方案。该研究可在减少主观决策、深化大中桥方案比选理论分析上提供更为科学的依据。

In this paper,through the example analysis of the simple-supported hollow slab bridge reconstruction scheme on a provincial road,the simple-supported hollow-slab bridge is analyzed by using the adhesive plate reinforcement and replacing the upper part of the beam.The program refinement index is introduced,combined with the tone operator in fuzzy mathematics.Quantitative calculation of the evaluation of expert colloquialism.Then,using the analytic hierarchy process,the second-level index is selected,the weight coefficient is scientifically selected,and the two schemes are comprehensively selected to determine the optimal scheme.This research provides a more scientific basis for reducing subjective decision-making and deepening the theoretical analysis of the comparison of large and medium bridge schemes.