| Title | Dynamic behavior of stay cables with rotational dampers |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 2010 |
| Authors | Impollonia, Nicola, Ricciardi Giuseppe, and Saitta Fernando |
| Journal | Journal of Engineering Mechanics |
| Volume | 136 |
| Issue | 6 |
| Pagination | 697-709 |
| Date Published | Jan-06-2010 |
| ISSN | 07339399 |
| Keywords | bridge, Bridge engineering, Bridges, cable, Cable stayed bridges, Cables, Civil engineering, Complex eigenvalues, Complex modal analysis, Complex modes, Computer simulation, Continuous structures, Damage preventions, Damping, Distributed excitation, Dynamic analysis, Dynamic behaviors, Dynamic response, Eigen function, eigenvalue, Eigenvalues, Eigenvalues and eigenfunctions, Equation of motion, Equations of motion, Modal analysis, Non-dimensional expressions, Non-dimensional parameters, numerical model, Numerical techniques, parameterization, Rotational stiffness, Stay cable, stiffness, Structural systems, Time domain analysis, Time domain response, vibration, Vibration analysis, Vibration reductions, Viscous dampers, wind forcing |
| Abstract | Vibration reduction in stay cables by means of viscous dampers is of great interest in cable damage prevention and serviceability of structural system supported by such cables. The paper presents a study on the effectiveness, as well as the limits, of rotational viscous dampers and springs inserted at the two ends of a bending-stiff taut cable; influence of rotational stiffness of the springs is also investigated. After a nondimensional expression of the equation of motion has been obtained, as in other cases of nonproportionally damped continuous structures, complex modal analysis is pursued, obtaining complex eigenvalues and eigenfunctions. Comparison with intermediate dampers, widely used in bridge engineering, is performed showing the range of nondimensional parameters for which the proposed approach is of interest. Finally, a numerical technique based on complex mode superposition is presented in order to evaluate time domain responses for transversal distributed excitation. As an example, the procedure is applied to a wind-exposed cable. © 2010 ASCE. |
| Notes | cited By 8 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953986713&doi=10.1061%2f%28ASCE%29EM.1943-7889.0000115&partnerID=40&md5=0ec3b5657c6b799c3ada84d90f43d868 |
| DOI | 10.1061/(ASCE)EM.1943-7889.0000115 |
| Short Title | J. Eng. Mech. |
| Citation Key | Impollonia2010697 |
