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基于模糊理论的桥梁监测设备评估方法研究

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针对桥梁监测设备运行状态难以量化评估的问题,提出一种基于模糊理论的综合评估方法,构建监测设备运行状态自诊断服务系统.基于现行规范建立监测设备运行状态评估指标体系,采用正态分布隶属度函数,并引入Pearson相关系数和信息熵确定各评估指标权重;采用基于混合算子的模糊评估模型,实现监测设备运行状态量化评估;通过自诊断服务系统,实时监测设备运行状态并进行报警.将该方法应用于某悬索桥监测设备评估,工程应用结果表明:该方法与规范方法和概率分析法评估结果相同,但该方法基于模糊理论"自下而上"逐级综合加权分析,全面量化评估桥梁监测设备体系各等级运行状态隶属度,评估结果简单直观,所构建的自诊断服务系统有助于科学指导桥梁健康监测系统运维.
Research on Evaluation Method of Bridge Monitoring Equipment Based on Fuzzy Theory
This paper presents a comprehensive method developed on the basis of fuzzy theory,which can quantitatively evaluate the service condition of the bridge monitoring equipment.By using the proposed method,a self-diagnostic service system for the monitoring equipment is built.Complying with the current codes,an evaluation index system of bridge monitoring equipment operation state is established,and the normal distribution membership function,together with the Pearson correlation coefficient and information entropy,is drawn to determine the weights of different evaluation indexes.The quantitative evaluation of the service condition of the monitoring equipment is conducted in the fuzzy evaluation model based on hybrid operators.The real-time conditions of the monitoring equipment and warning are carried out via the self-diagnostic service system.The proposed method has been used in a suspension bridge.The engineering practice demonstrates that the evaluations made by the presented method are the same as those made by the methods suggested in the codes and the probability analysis method.But it provides a bottom-up,layer-by-layer comprehensive weighted analysis based on fussy theory,quantitatively evaluates the operation state and membership of each layer of the bridge monitoring equipment system,and evaluation results are directly registered.The presented self-diagnostic service system is favorable for the scientific guiding of the operation of the bridge health monitoring system.

bridge engineeringhealth monitoringfuzzy theorymonitoring equipmentevaluation index systemmembership functionoperation condition evaluationself-diagnostic service system

江禹、钟继卫、吴巨峰、赵训刚、李聪

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桥梁智能与绿色建造全国重点实验室,湖北武汉 430034

中铁大桥局集团有限公司,湖北 武汉 430050

中铁桥研科技有限公司,湖北 武汉 430034

桥梁工程 健康监测 模糊理论 监测设备 评估指标体系 隶属度函数 运行状态评估 自诊断服务系统

中国中铁股份有限公司科技研究开发计划项目

实用技术2022-重点-01

2024

10.20052/j.issn.1671-7767.2024.04.016

世界桥梁
中铁大桥局集团有限公司

世界桥梁

CSTPCD北大核心
影响因子：0.928
ISSN：1671-7767
年,卷(期)：2024.52(4)
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