Tension Estimation Method for Cable With Damper Using Natural Frequencies

Cable-Stayed Bridges: A Case Study for Vibration-Based Cable Tension Estimation

A cable-stayed bridge recently constructed by the Ohio Department of Transportation incorporates measures put forth by a Federal Highway Administration study to mitigate stay motion. In following recent trends, the stays at this bridge are built without the use of grout for the purposes of inspection and, if necessary, replacement. Several experiments were performed to determine the viability o...

A new energy-based method for evaluating the damping properties of cable-damper systems

External dampers and cross-ties are commonly used to control vibrations of stay cables on cable-stayed bridges. While dampers contribute directly to the structural damping of the attached cables, cross-ties mainly help to increase the stiffness of the connected cable system. The idea of incorporating cross-ties with dampers has also been attempted in a few recent applications to benefit from th...

Transverse Vibration Control for Cable Stayed Bridge Under Construction Using Active Mass Damper

Analysis of Natural Frequencies for a Laminated Composite Plate with Piezoelectric Patches using the First and Second Eigenvalue Derivatives

In this paper, the first and second order approximations of Taylor expansion are used for calculating the change of each natural frequency by modifying an arbitrary parameter of a system with a known amount and based on this approximation, the inverse eigenvalue problem is transformed to a solvable algebraic equation. The finite element formulation, based on the classical laminated plate theory...

Feasibility Study of the Electromagnetic Damper for Cable Structures Using Real-Time Hybrid Simulation

Cable structure is a major component of long-span bridges, such as cable-stayed and suspension bridges, and it transfers the main loads of bridges to the pylons. As these cable structures are exposed to continuous external loads, such as vehicle and wind loads, vibration control and continuous monitoring of the cable are required. In this study, an electromagnetic (EM) damper was designed and f...