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Date:2022-08-29

Indexed by:Journal Article

Date of Publication:2022-06-29

Journal:大连理工大学学报

Institution:建设工程学部

Issue:2

Page Number:239-242

ISSN:1000-8608

Abstract:A new time domain transferring method for damage identification of structures with mass uncertainty under unknown seismic input is developed, which can be applied to the damage identification of structures with unknown effects of surrounding soils, adjoining structures and unstructured components. The regularized stiffness and damping parameters are constructed and the corresponding damage identification formulae are derived in terms of regularized parameters. The temporary influence parameters and correlate parameters are introduced to avoid the effects of structural mass. The effects of mass uncertainty on damage identification are studied. Based on the proposed method, the structural damage can be directly identified from structure response and the seismic history can be obtained simultaneously. Numerical example indicates the accuracy and the effectiveness of the proposed method.

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