基于统计及形态特征指标的桥梁线形监测评估  

Evaluation of Monitoring of Bridge Geometric Shape Based on Statistics and Shape Characteristic Indices

作　　者：王波[1,2,3] 陈开利[1,2] 钟继卫[1,2] 

机构地区：[1]中铁大桥局集团桥科院有限公司,湖北武汉430034 [2]桥梁结构安全与健康湖北省重点实验室,湖北武汉430034 [3]武汉大学土木工程博士后流动站,湖北武汉430072

出　　处：《桥梁建设》2011年第2期13-17,共5页Bridge Construction

摘　　要：为探讨大跨度桥梁线形实时在线监测及安全评估方法,以武汉阳逻长江公路大桥为工程背景,建立了液压差半封闭式连通管线形监测系统,介绍该桥健康监测系统中线形监测的测点布置、采集方案策略,重点研究了以统计及形态特征为指标的桥梁线形监测加权评估方法。研究表明:该系统能够实时在线监测并评定桥梁线形变化特征,且测试精度高、长期稳定性好;统计及形态特征指标集单个测点与全部测点数据评估为一体,可有效运用于大跨度桥梁线形监测的状态评估。To investigate the method for real-time online monitoring and safety evaluation of geometric shape of long span bridge,Wuhan Yangluo Changjiang River Highway Bridge was taken as the research object and the geometric shape monitoring system of liquid pressure difference and semi-closed communication pipes was established.The testing point arrangement and data acquisition strategy of the geometric shape monitoring in the health monitoring system of the highway bridge are presented and the weighted evaluation method for the geometric shape monitoring that takes the statistics and shape characteristics as indices is particularly studied.The results of the study demonstrate that the geometric shape monitoring system can monitor and evaluate the changing characteristics of the geometric shape of the bridge online in real time and also with high testing precision and good long-term satiability.The statistics and shape characteristic indices can integrate the data evaluation of both a single testing point and all testing points and the system can be effectively applied to the evaluation of the geometric shape monitoring state of long span bridge.

关 键 词：大跨度桥梁 线形 实时在线监测 统计指标 形态特征指标 

分 类 号：U446[建筑科学—桥梁与隧道工程] TP212[交通运输工程—道路与铁道工程]