EXPERIMENTAL INVESTIGATION OF SEISMIC BEHAVIOR OFLIGHT-FRAMED WOOD SHEAR WALLS WITH SUPPLEMENTALENERGY DISSIPATION

摘要

As performance-based seismic design becomes more prevalent, increasing attention is being given toimproving building performance during seismic events. Much attention has been given to improving theseismic performance of steel and concrete structures, with relatively little attention having been given towoodframe buildings. Although life-safety is generally not a significant concern for woodframe buildings,the financial impact associated with the damage to such structures during strong earthquakes can bedevastating. The objective of this research was to determine, through experimental testing, the suitabilityof supplemental fluid dampers for improving the seismic performance of wood-framed shear walls.Experimental testing of full-scale wood-framed shear walls was performed using a seismic shaking tablein which in-plane excitation was applied at the base of the walls. Two different wall configurations weretested; one that employed conventional framing and another that employed a modified framing systemcombined with a supplemental fluid damper. The results of the shaking table tests revealed that the wallconfiguration that employed a supplemental fluid damper offered improved performance as compared tothe conventional wall configuration in terms of reducing the peak interstory drift, peak acceleration, andinelastic energy dissipation demand on the wood framing.