Abstract
In modern engineering applications, composite walls have drawn much attention owing to their good mechanical properties and standardized production. In this study, the multi-celled corrugated-plate CFST wall (MCCW) was studied experimentally and numerically as an innovative type of composite wall in engineering structures. Seven full-scaled MCCW specimens were tested, in which axial force ratios and sectional dimensions were considered as the main research variables. The typical deformation modes were classified and discussed, and the global buckling mode was observed after the load-carrying capacity dropped to 85% of the ultimate load for the specimens with axial force ratios of 0.55 and 0.65. In addition, the load-bearing capacity, ductility, stiffness and energy dissipation capacity of these specimens were evaluated in detail. The ductility factors of almost all specimens were greater than 3.0, and the final equivalent damping coefficients of all specimens exceeded 0.3. The key design parameters including axial force ratio and width of end steel tube were recommended for practical application of MCCWs. Furthermore, a finite element (FE) model was established and validated by test results. In general, this study can provide valuable references for practical designs of MCCW members under seismic effects.
Published Version
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