Incorporating the aeroelastic stability analysis of bridges into a probabilistic framework is mandatory as a consequence of the large uncertainties usually arising in technical situations. This issue is discussed with reference to a case study, represented by the Tsing Ma suspension Bridge, located in Hong Kong, China. A numerical model of the bridge was developed elsewhere. Based on the full order model, a two-degrees-of-freedom (dofs) sectional model is identified to be adopted in the aeroelastic stability analysis. Afterwards, a direct Montecarlo simulation is performed in order to investigate how the variability of the flutter derivatives reflects on the predicted critic condition.
Flutter prediction in suspension bridges: sources of uncertainty and open issues
UBERTINI, Filippo
2008
Abstract
Incorporating the aeroelastic stability analysis of bridges into a probabilistic framework is mandatory as a consequence of the large uncertainties usually arising in technical situations. This issue is discussed with reference to a case study, represented by the Tsing Ma suspension Bridge, located in Hong Kong, China. A numerical model of the bridge was developed elsewhere. Based on the full order model, a two-degrees-of-freedom (dofs) sectional model is identified to be adopted in the aeroelastic stability analysis. Afterwards, a direct Montecarlo simulation is performed in order to investigate how the variability of the flutter derivatives reflects on the predicted critic condition.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
