TY - CHAP
T1 - Identification and Reparation of Seismic Damage Induced Irregularity of Steel Frames with Weak-Base/Strong-Column Design
AU - Lin, Kun Sian
AU - Kurata, Masahiro
AU - Kawamoto, Tafu
AU - Matsuo, Shintaro
AU - Pettinga, Didier
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
PY - 2025
Y1 - 2025
N2 - Damage to primary structural members reduces story stiffness and, in severe cases, changes the mode shape of frames, introducing structural irregularity that is a critical factor for damage assessment. This paper presents an investigation to clarify the changes in vertical stiffness distribution caused by damage and examine the effectiveness of a rapid repair process. The study used the test data of a full-scale shaking table test of a four-story steel frame representing a hospital facility with a weak-base/strong-column design conducted in 2020. The relationship between the damage states of the structure and the structural characteristics including natural frequency, mode shapes, and stiffness was evaluated by system identification. Using a numerical model of the specimen, a widely-used repair method that rapidly reverts the column base's overall stiffness was proven effective through the subsequent analyses.
AB - Damage to primary structural members reduces story stiffness and, in severe cases, changes the mode shape of frames, introducing structural irregularity that is a critical factor for damage assessment. This paper presents an investigation to clarify the changes in vertical stiffness distribution caused by damage and examine the effectiveness of a rapid repair process. The study used the test data of a full-scale shaking table test of a four-story steel frame representing a hospital facility with a weak-base/strong-column design conducted in 2020. The relationship between the damage states of the structure and the structural characteristics including natural frequency, mode shapes, and stiffness was evaluated by system identification. Using a numerical model of the specimen, a widely-used repair method that rapidly reverts the column base's overall stiffness was proven effective through the subsequent analyses.
UR - https://www.scopus.com/pages/publications/105001327551
UR - https://www.scopus.com/inward/citedby.url?scp=105001327551&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-84220-7_16
DO - 10.1007/978-3-031-84220-7_16
M3 - Chapter
AN - SCOPUS:105001327551
T3 - Geotechnical, Geological and Earthquake Engineering
SP - 165
EP - 174
BT - Geotechnical, Geological and Earthquake Engineering
PB - Springer Science and Business Media B.V.
ER -