既有钢管混凝土拱桥实时监测评估系统

A Real-Time Monitoring and Assessment System for Existing CFST Arch Bridges

既有钢管混凝土拱桥实时监测评估系统是对桥址处的温度场、大桥的交通荷载状况及桥梁的静、动力效应实时监测,评估桥梁主体的运营状况。该系统主要由状态监测、损伤报警和性能评估及辅助决策子系统构成,能自动采集、分析和评估结构各类状态数据;判断异常状态并报警;自动探查采集系统故障;灵活设置数据采集时段,长期全面记录桥梁的受荷及响应历史;适时响应中控中心指令,实时查询、分析桥梁的运营状况。通过计算确定传感器的合理布置位置;远程数据传输采用有线数据传输方式。运行结果表明,该系统实现了既有钢管混凝土拱桥运营状况数据和图像的实时联动采集、实时自动传输及桥梁运营状态的远程实时自动监测、性能评估和安全预警。

The real-time monitoring and assessment system for existing concrete-filled steel tube （CFST） arch bridges is a system that is used for monitoring the temperature fields at bridge sites, the traffic load conditions, the static and dynamic effect of the bridges and also for assessing the operation status of the principal structures of the bridges. The system is mainly composed of the condition monitoring, damage alarming, performance assessment and auxiliary decision subsystems. The system can automatically acquire, analyze and assess the different condition data of the bridge structures, make judgment of and alarm the abnormal conditions, automatically detect and acquire the malfunction of the system itself, flexibly set the time sections of data acquisition, record in a long term and all-round way the load and the response history on the bridges, real-time inquire and analyze the operation conditions of the bridges, determine the rational locations of layout of sensors through calculation and remotely transmit the data by the wired data transmission. The operation of the system shows that the system has realized the real time linkage acquisition and automatic transmission of the data and images of the CFST arch bridges as well as the remote automatic monitoring, performance assessment and safety alarming of the operation conditions of the bridges.