基于粗糙集理论的混凝土拱桥加固或拆除方案综合判定  

Comprehensive Judgment of Reinforcement or Demolition Scheme of Concrete Arch Bridge Based on Rough Set Theory

作　　者：张胜林 周水兴[2] 耿川雁 叶航 刘彬 ZHANG Shenglin;ZHOU Shuixing;GENG Chuanyan;YE Hang;LIU Bin(Guizhou Highway Engineering Group Co.,Ltd.,Guiyang 550003,Guizhou,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Guizhou Bridge Construction Group Co.,Ltd.,Guiyang 550015,Guizhou,China)

机构地区：[1]贵州省公路工程集团有限公司,贵州贵阳550003 [2]重庆交通大学土木工程学院,重庆400074 [3]贵州桥梁建设集团有限责任公司,贵州贵阳550015

出　　处：《重庆交通大学学报（自然科学版）》2023年第10期38-44,共7页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：贵州省交通运输厅科技项目(2020-123-018);重庆市教委重点科技项目(KJZD-K201900705)。

摘　　要：20世纪60年代至90年代,国内建造了数量众多的双曲拱桥和桁式组合拱桥,使用过程中出现了较为严重的病害,不少拱桥进行了加固改造或拆除重建。然而,拱桥的加固或拆除涉及到技术、经济、社会、资源等多种因素,现有研究通常只考虑桥梁技术状况,难以做出科学合理的决策方案。针对决策因素单一性的不足,根据双曲拱桥和桁式组合拱桥的病害,从技术状况、社会发展、国家方针、政府行为、社会资源、寿命成本等方面构建了包含“技术类、社会类、经济类”的评判指标体系;运用粗糙集理论,建立计算逻辑严谨、指标定权简便、判定结果准确的混凝土拱桥加固或拆除方案综合判定模型,将其应用于贵州省花鱼洞大桥中。研究表明:建立的评判指标体系,能够客观地开展混凝土拱桥加固或拆除方案综合判定,验证了综合判定模型的可行性。From 1960s to 1990s,a large number of double-curved arch bridges and truss composite arch bridges were built in China.Serious diseases occurred during operation,and many arch bridges were forced to be reinforced or demolished and reconstructed.However,the reinforcement or demolition of arch bridges involved many factors,such as technology,economy,society and resources.The current studies usually only considered the technical status of bridges,and it was difficult to make a scientific and reasonable decision-making scheme.In view of the shortcoming of the singularity of decision-making factors,according to the diseases of double-curved arch bridge and truss composite arch bridge,the evaluation index system including“technical category,social category and economic category”was constructed from the aspects such as technical status,social development,national policy,government behavior,social resources and life cost.Based on rough set theory,a comprehensive judgment model for the reinforcement or demolition scheme of concrete arch bridge was established,which had rigorous calculation logic,simple index weight determination and accurate judgment results.And the proposed model was applied to Huayudong Bridge in Guizhou Province.The results show that the proposed evaluation index system can objectively carry out the comprehensive judgment of the reinforcement or demolition scheme of the concrete arch bridge and verify the feasibility of the comprehensive judgment model.

关 键 词：桥梁工程 混凝土拱桥 加固或拆除 评判指标体系 粗糙集理论 综合判定模型 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]