摘要
针对目前中小跨径桥梁健康监测系统及结构安全状态评估相关研究不足的情况,以万埠大桥为工程背景,通过安装在桥梁结构上的健康监测系统获得实时监测数据,对桥梁结构应变及倾角数据进行分析处理。基于统计学原理,采用损伤预警理论中的无模型指标训练法对万埠大桥进行安全状态评估,通过该法计算得到桥梁结构应变及倾角值的安全阈值,将监测系统实时监测数据与安全阈值进行对比,评估桥梁安全状态,为桥梁管养部门管理决策提供依据,也为今后中小跨径桥梁安全评估提供实例借鉴。
Insufficient research on the current small and medium span bridge health monitoring system and structural safety status assessment,this paper takes Wanbu Bridge as the engineering background,obtains real-time monitoring data through the health monitoring system installed on the bridge structure,and analyzes and processes the strain and inclination data of the bridge structure.Based on statistics theory,the damage in the theory of early warning no index model training method to evaluate wan port bridge safety status,through the method to calculate the strain and inclination of bridge structure safety threshold,the data and safety monitoring system for real-time monitoring,comparing the threshold to evaluate bridge safety state,and provide basis for decision-making for the bridge custody department management,also provide examples for the small and medium span bridges safety evaluation in the future.
作者
毛琳
林旭
代力
MAO Lin;LIN Xu;DAI Li(Jiangxi Transportation Institute,Nanchang,Jiangxi 330200,China;Research and Development.Center on Technologies and Equipment of Long-span Bridge Construction Ministry of Transport,Nanchang,Jiangxi 330200,China;Nanchang Highway Administration Bureau,Nanchang,Jiangxi 330000,China)
出处
《公路工程》
北大核心
2020年第5期214-219,共6页
Highway Engineering
基金
江西省交通厅科技项目(2018H0040)
江西省科技厅人才团队计划—“5511”科技创新人才项目(20165BCB18021)
江西省交通运输厅科技项目(2017H0014)。
关键词
中小跨径桥梁
健康监测
无模型指标训练法
安全阈值
安全状态评估
medium and small span bridge
health monitoring
training method without model index
safe threshold
safety status assessment
