木質系耐力壁のせん断性状に及ぼす加力速度の影響に関する基礎的研究

概要

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Racking tests using dynamic servo-actuator for Japanese conventional frame construction (JCFC), light-frame construction (LFC) and wooden glued-panel construction (WGPC) walls were conducted to discuss the influence of loading speed ranged from 0.0001 to 0.33rad./sec on the shear properties of bearing walls. Racking test results indicate that i) failure modes are not influenced by the loading speed, ii) as the increase of loading speed, the maximum racking loads slightly increase for JCFC and LFC walls, but those decrease for WGPC, iii) the influence of loading speed on the stiffness of walls depends on both the construction method and the magnitude of loading speed, iv) the maximum shear deformation of walls in high speed loading for cross-diagonal braced walls of JCFC and walls of WGPC decrease about 50% less than that in static loading, v) the values of the equivalent viscous damping factor for LFC and WGPC walls proportionally increases with the loading speed over 0.01rad./sec.
2005-12-30