Field Load Test Based SHM System Safety Standard Determination for Rigid Frame Bridge  

作　　者：Xilong Zheng Qiong Wang Di Guan 

机构地区：[1]School of Civil and Architectural Engineering,Harbin University,Harbin,150076,China

出　　处：《Structural Durability & Health Monitoring》2024年第3期361-376,共16页结构耐久性与健康监测（英文）

摘　　要：The deteriorated continuous rigid frame bridge is strengthened by external prestressing. Static loading tests wereconducted before and after the bridge rehabilitation to verify the effectiveness of the rehabilitation process. Thestiffness of the repaired bridge is improved, and the maximum deflection of the load test is reduced from 37.9 to27.6 mm. A bridge health monitoring system is installed after the bridge is reinforced. To achieve an easy assessmentof the bridge’s safety status by directly using transferred data, a real-time safety warning system is createdbased on a five-level safety standard. The threshold for each safety level will be determined by theoretical calculationsand the outcomes of static loading tests. The highest risk threshold will be set at the ultimate limit statevalue. The remaining levels, namely middle risk, low risk, and very low risk, will be determined usingreduction coefficients of 0.95, 0.9, and 0.8, respectively.

关 键 词：Continuous rigid frame bridge REHABILITATION long-term monitoring field load test safety standard determination 

分 类 号：U44[建筑科学—桥梁与隧道工程]