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 re- sponse 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.

Damage detection in a suspension bridge model using the Interpolation Damage Detection Method

DOMANESCHI, MARCO;LIMONGELLI, MARIA GIUSEPPINA;MARTINELLI, LUCA
2012-01-01

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 re- sponse 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
Bridge Maintenance, Safety, Management, Resilience and Sustainability
9780415621243
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/668787
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