bridge monitoring; cable; tension; system identification
Abstract :
[en] In order to remotely monitor tension in a cable over time, an appropriate method is based on the natural frequencies of the cable measured by means of wireless accelerometers. In this paper, an existing method is extended to determine the tension in long or short shallow cables with small bending stiffness and arbitrary end conditions. First, a low-order analytical model is developed to compute the dynamic response of a given cable. Then, the unknown parameters such as the end conditions, the exact length of the cable and the tension in the cable are adjusted, using an iterative nonlinear least-square algorithm, until the computed natural frequencies and associated mode shapes match the measured ones. This procedure is finally validated with field measurements collected on long and short cables.
Research Center/Unit :
Structural and Stochastic Dynamics, Structural Engineering, Urban and Environmental Engineering
Disciplines :
Civil engineering
Author, co-author :
Geuzaine, Margaux ; Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Denoël, Vincent ; Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Language :
English
Title :
A low-order analytical model to monitor tension in shallow cables with specific end conditions
Publication date :
15 March 2019
Number of pages :
A1
Event name :
Young Engineers Colloquium 2019
Event organizer :
Belgian and Dutch National Groups of IABSE
Event place :
Eindhoven, Netherlands
Event date :
15-16 mars 2019
Audience :
International
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture
