TORSIONAL SEISMIC RESPONSE REDUCTION BY PASSIVE CONTROL DEVISE FOR CONVENTIONAL POST-AND-BEAM ONE-STORY WOODEN HOUSE WITH STIFFNESS ECCENTRICITY

摘要

Shaking table tests for full-scale wood frame specimens with large stiffness eccentricity are conducted. Specimen is single story, and its plan dimension is 1.82m in X-dircction and 2.73m in Y-direction. Stiffness of specimens are unbalanced in X direction, along which input motions are provided by the shaking table. The eccentricity ratio R_e, defined by Japan Building Standard Law is about 0.6 for the standard specimen. Six specimens are tested : one docs not have any dampers and the others are provided with viscoclastic dampers in various arrangements. The performance of specimens is discussed by referring to story drift, damper deformation and dynamic properties. Finally, we propose a methodology of effective torsional response reduction by passive control devises.