摘要
针对大坝健康诊断中诊断指标的不确定性和隶属区间的模糊性问题,采用决策试验与评价实验室(DEMATEL)和层次分析法(AHP)理论,建立了基于AHP-DEMATEL的大坝健康诊断模型。结合水口混凝土重力坝监测数据,对水口混凝土重力坝的健康状态进行诊断,确定了其关键诊断指标和目前的工作运行状态。结果表明,运用AHP-DEMATEL法确定的权重更加客观、准确,基于AHP-DEMATEL健康诊断模型对水口混凝土重力坝诊断的结果为基本正常的健康状态,与定检结果相吻合,表明所提出的基于AHP-DEMATEL的大坝健康诊断模型合理、可行。
This paper intends to develop and establish a dam strength health identification and determination model based on the DEMATEL and AHP theory by integrating the monitoring data. In so doing,we have managed to take its key identifying indicators and current working conditions as the main strength status evaluation standards of the concrete gravity of the dam in view of the uncertainties of the identification and determination indexes and the ambiguity of the corresponding areas. The results of our identification and determination demonstrate show that the dam crack( U34),the vertical displacement of the dam( U32)and the infiltration flow( U21) may all have a great impact on the rest identification and evaluation indicators,whereas the dominant affecting indicators in the strength evaluation of the Shuikou concrete dam should mean the quality of the building engineering( U12),which is also affected by the rest indicators,and also serves as the key consequential indicator in the strength evaluation of the Shuikou concrete dam. At the same time,the membership degrees of the normal status and the basic normal status determined by AHP have been found equal to 0. 332 and 0. 399,respectively,with the membership degree being different by16. 8%. The subordinating degrees of the normal status and the basic normal status determined by AHP-DEMATEL are equal to0. 252 and 0. 414,respectively,with the differing degree of the subordinating ones being by a percentage of 39. 1%. The above testing results prove that,as compared with the AHP model,the dam strength status assessed by the AHP-DEMATEL model tends to be in correspondence with the basic normal status. Nevertheless,if the weight of the identifying index is determined by the AHP-DEMATEL method,the interaction of the identifying and assessing indicators of the same layer and the upper-&-lower layers can be found fully included,with the final evaluation result regarded as more objective and accurate. Thus,the AHP-DEMATEL the dam strength identifying and assessing model propose
作者
章光
武晓炜
胡少华
杨金辉
ZHANG Guang;WU Xiao-wei;HU Shao-hua;YANG Jin-hui(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Roadway Bridge and Structure Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《安全与环境学报》
CAS
CSCD
北大核心
2019年第5期1489-1496,共8页
Journal of Safety and Environment
基金
国家自然科学基金青年基金项目(51609184)
道路桥梁与结构工程湖北省重点实验室(武汉理工大学)开放课题基金项目(DQJJ201705)
中央高校基本科研业务费项目(185208001)
