Dynamic Characteristics of a Long-Span Cable-Stayed Bridge
In order to study the dynamic characteristics of a super-long-span cable-stayed bridge which is semi-floating system, the spatial finite element model of this cable-stayed bridge was established in ANSYS based on the finite element theory.Modal solution was conducted using subspace iteration method, and natural frequencies and vibration modes were obtained.The dynamic characteristics of this super-long-span cable-stayed bridge were then analyzed.Results showed that the super-long-span cable-stayed bridge of semi-floating system has long basic cycle, low natural frequencies, dense modes and intercoupling vibration modes.
L. Hui "Dynamic Characteristics of a Long-Span Cable-Stayed Bridge", Key Engineering Materials, Vols. 480-481, pp. 1496-1501, 2011