[2065] Static Loading Test of Two-story, One-bay RC Moment-Resisting Frame infilled with CLT Panels
Keywords:鉄筋コンクリート、木質壁、構造実験、耐震壁、ロッキング、shear wall、wooden wall
既往研究では単層単スパンRC架構にCLT壁を内蔵することで剛性及び耐力が増大し，変形性能が向上した。本研究では特にCLT壁の内蔵が中間梁に与える影響を把握するため，静的載荷実験を行った。実験対象は梁降伏型2層1スパンRC架構であり，CLT壁の有無及び壁厚を変動因子とする3体の25%縮小試験体である。実験の結果，CLT壁の内蔵により剛性及び耐力が増大した。また，CLT壁のロッキング挙動によるRC枠梁と中間梁の損傷メカニズムを明らかにした。一方，壁厚増大により初期剛性は増大したが，メカニズム形成時の耐力及び梁端部の損傷への影響は限定的であることを確認した。In previous studies, the experimental investigation revealed that the presence of CLT infill significantly increased the initial stiffness and strength of a one-story, one-bay RC moment-resisting frame. In this study, a series of static loading tests was conducted using the 25% scale test specimen representing a two-story, one-bay RC moment-resisting frame to especially figure out the damage to the middle beam due to being infilled with CLT panels. Test specimens were designed considering with two parameters for the test: the presence of CLT infill and CLT panel thickness. The experimental investigation demonstrated that the presence of CLT infill significantly increased the initial stiffness and mechanism strength of RC moment-resisting frame. The damage mechanism of the boundary beam and middle beam due to the rocking behavior was also clarified. On the other hand, while increasing the CLT panel thickness significantly contributed to the initial stiffness of the overall frame, its impact on the mechanism strength and the damage of RC beams was limited.