title: Detection of earthquake-induced damage in a framed structure using a finite element model updating procedure.
abstract: Damage of a 5-story framed structure was identified from two types of measured data, which are frequency response functions (FRF) and natural frequencies, using a finite element (FE) model updating procedure. In this study, a procedure to determine the appropriate weightings for different groups of observations was proposed. In addition, a modified frame element which included rotational springs was used to construct the FE model for updating to represent concentrated damage at the member ends (a formulation for plastic hinges in framed structures subjected to strong earthquakes). The results of the model updating and subsequent damage detection when the rotational springs (RS model) were used were compared with those obtained using the conventional frame elements (FS model). Comparisons indicated that the RS model gave more accurate results than the FS model. That is, the errors in the natural frequencies of the updated models were smaller, and the identified damage showed clearer distinctions between damaged and undamaged members and was more consistent with observed damage.
authors.affiliation: Department of Architectural Engineering, Hanyang University 222, Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Eunjong
authors.identifier: 0000-0002-4098-5153
authors.initials: E
authors.lastname: Yu
authors.affiliation: Department of Architectural Engineering, Hanyang University 222, Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Seung-Nam
authors.initials: SN
authors.lastname: Kim
authors.affiliation: Department of Architectural Engineering, Dankook University, Jukjeon-dong, Yongin-si 448-701, Republic of Korea.
authors.forename: Taewon
authors.initials: T
authors.lastname: Park
authors.affiliation: Department of Architectural Engineering, Dankook University, Jukjeon-dong, Yongin-si 448-701, Republic of Korea.
authors.forename: Sang-Hyun
authors.initials: SH
authors.lastname: Lee
mesh_terms: D060389:Construction Industry / Q000379:methods*; D055866:Earthquakes; D008962:Models, Theoretical