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Generic frame model for simulation of earthquake responses of steel moment frames
Author(s) -
Nakashima Masayoshi,
Ogawa Koji,
Inoue Kazuo
Publication year - 2002
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.148
Subject(s) - structural engineering , randomness , moment (physics) , frame (networking) , representation (politics) , engineering , computer science , mathematics , statistics , physics , mechanical engineering , politics , political science , law , classical mechanics
This paper presents a generic frame (GF) model useful for the simulation of earthquake responses of steel moment frames. Adopting the assumption that all rotations at joints lying at each floor level are identical, the model requires the solution of significantly fewer degrees of freedom than models with member‐by‐member representation. Procedures to construct a GF model that represents a multi‐storey, multi‐span frame are detailed. The model can allow for panel zone behaviour as well. The accuracy of the GF model in predicting maximum storey drifts and member plastic rotations is calibrated for two example frames against a variety of ground motions. Errors associated with the model are found to be negligible in light of the variability of responses attached to randomness and uncertainties of earthquake ground motions. The GF model is effective in conducting extensive numerical analyses needed for the identification and characterization of primary structural parameters that control the earthquake responses of steel moment frames, thereby contributing to further advancement of performance‐based design. Copyright © 2001 John Wiley & Sons, Ltd.