Finite element analysis and test study of dynamic behavior of single-tower and double-face cable-stayed bridge

Bridge ambient vibration test has an advantage of being simple, fast and cheap. In this paper, we take the example of Linjiangmen Bridge which is located in Jilin City, Jilin province. The dynamic test research on the characteristics of the natural vibration for the bridge is discussed. The authors calculate the characteristics of the natural vibration for the bridge with the structure analysis software-ANSYS, and compare them with the test results. The finite element calculation results coincide with the dynamic test results, which demonstrated that the ambient vibration tests are sufficient to identify the most significant modes for this kind of cable-stayed bridges. The Identified dynamic properties can be served as the basis in the finite element model updating, damage detection, condition assessment and health monitoring of the bridge.