Technical Process and Research on Operation Monitoring of Jiangxinzhou Bridge

In order to acquire a comprehensive knowledge of the working conditions of the bridge in service,the test technology and process of all parts of the bridge in the course of operation monitoring of Jiangxinzhou self-anchored suspension bridge are systematically illustrated.Besides,the test results of hanger force,main-cable force,dynamiccharacteristics,main-cable and main girder configuration,and tower deviation are analyzed in detail.The results indicate that all the tested values are consistent with design values and the bridge structure is in good condition;the in-plane vibration of the hanger is strongly influenced by vehicle load of the bridge deck;natural frequency of the hanger can be acquired through out-plane vibration so as to accurately measure the internal force of the hunger;wireless sensor used for testing dynamic characteristics of the whole bridge in service is convenient and fast,and highly accurate.