Study on Restoring Force Model of Cold-Formed Thin-Walled Steel Lipped Channel Beam-Columns under Cyclic Load
نویسندگان
چکیده
In order to study the hysteretic behavior and restoring force model of cold-formed thin-walled steel (CFTWS) lipped channel beam-column, a finite element analysis (FEA) considering material geometric nonlinearity influence initial imperfection under cyclic loading was established by ABAQUS software. Based on verified FEA model, CFTWS beam-column members with different influencing factors analyzed parameterization. The effects width-to-thickness ratio, axial compression ratio slenderness ductility, energy dissipation capacity stiffness degradation were studied. results parameter theoretical regression analysis, calculation formula each characteristic point trilinear skeleton curve member proposed. hysteresis member, simplified (SRFM) according rules for buckling modes. showed that SRFM modes in good agreement FEA, which can better indicate member. proposed accurate applicable, provide fundament seismic beam-column.
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ژورنال
عنوان ژورنال: Buildings
سال: 2023
ISSN: ['2075-5309']
DOI: https://doi.org/10.3390/buildings13010114