Cyclic Analysis of Steel Plate Shear Walls With Coupling

Abstract eng:
Recent large-scale cyclic tests demonstrated the viability of the Steel Plate Shear Wall with Coupling (SPSW-WC) configuration as a seismic force-resisting system for high seismic regions. These test specimens were three-story coupled walls that represented the bottom portion of a six-story prototype frame, and a hybrid simulation protocol was employed to impose demands consistent with the upper portion of the frame that was not part of the physical substructure. The research described in this paper developed three-dimensional finite element models that were validated against the large-scale tests. The models were then used to study the performance of the SPSW-WC test specimens and extend the behavioral insight by considering response quantities that could not be measured in tests. The numerical modeling approach was then used to establish full six-story reduced-scale models that verified the equivalence and accuracy of the boundary conditions for the test specimens. In addition, the performances of the reduced-scale six-story models, three-story models and experimental specimens were further compared. These results showed that the numerical simulations not only captured the global behaviors and local limit states observed in tests, but also revealed valuable new information that could not be directly obtained from the tests. The developed modeling framework provides a valuable tool for supplementing experimental data and carrying out further parametric studies of a range of SPSW-WC configurations.

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