Herein the feasibility of a damage detection and localization method (the Interpolation Damage Detection Method) is investigated for damage detection of long span suspension bridges. Based on the response induced by wind loading, a 'signature' of the structure in the intact state is obtained in terms of the power spectral densities of responses along the bridge deck and is compared with that in the potentially damaged conditions, considering measurement and process noise. A finite element model of the Shimotsui-Seto suspension bridge, in Japan, is adopted for this study. Wind loading descends from a spatially correlated model for the wind action. Several damage scenarios are considered; these are obtained by reducing the stiffness of a number of elements along the bridge deck. Results show that the IDDM is able to provide, with a good level of accuracy, the correct location of the damage for the damage scenarios herein considered. © 2012 Taylor & Francis Group.
Damage detection in a suspension bridge model using the Interpolation Damage Detection Method / Domaneschi, Marco; Limongelli, M. P.; Martinelli, L.. - (2012), pp. 2975-2980. (Intervento presentato al convegno 6th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2012; tenutosi a Stresa, Lake Maggiore; Italy; nel 8 July 2012 through 12 July 2012;).
Damage detection in a suspension bridge model using the Interpolation Damage Detection Method
DOMANESCHI, MARCO;
2012
Abstract
Herein the feasibility of a damage detection and localization method (the Interpolation Damage Detection Method) is investigated for damage detection of long span suspension bridges. Based on the response induced by wind loading, a 'signature' of the structure in the intact state is obtained in terms of the power spectral densities of responses along the bridge deck and is compared with that in the potentially damaged conditions, considering measurement and process noise. A finite element model of the Shimotsui-Seto suspension bridge, in Japan, is adopted for this study. Wind loading descends from a spatially correlated model for the wind action. Several damage scenarios are considered; these are obtained by reducing the stiffness of a number of elements along the bridge deck. Results show that the IDDM is able to provide, with a good level of accuracy, the correct location of the damage for the damage scenarios herein considered. © 2012 Taylor & Francis Group.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2664601
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