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论文类型：期刊论文
发表时间：2008-08-01
发表刊物：ADVANCES IN STRUCTURAL ENGINEERING
收录刊物：SCIE、EI、Scopus
卷号：11
期号：4
页面范围：455-473
ISSN号：1369-4332
关键字：concrete filled steel tube; column; post-fire; cyclic loading; hysteretic model
摘要：A mechanics model is developed in this paper for concrete filled steel tubular (CFST) columns subjected to constant axial load and cyclically increasing flexural loading after exposure to ISO-834 standard fire. The predicted cyclic responses for the composite columns are in good agreement with the test results. Based on the theoretical model, parametric analysis was performed on the behaviours of moment (M) versus curvature (phi) response, and lateral load (P) versus lateral displacement (Delta) relationship for the composite columns after exposure to fire. Finally, simplified hysteretic models for the moment (M) versus curvature (phi) response, and the lateral load (P) versus lateral displacement (Delta) relationship were suggested.