Abstract
The direct-displacement seismic design of wood buildings requires knowledge of the global load–displacement behavior of the building and the variation of the global equivalent viscous damping with displacement amplitude. This paper proposes a simple numerical model for the determination of these parameters. The proposed model is validated with results of shake table tests of a full-scale two-story wood framed house. The model is then used for the monotonic and cyclic pushover analyses of full-scale woodframe buildings, representing various construction qualities. From these analyses, a simple equation is proposed for the variation of the global equivalent viscous damping with building drift.
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