@article{oai:kumadai.repo.nii.ac.jp:00029158, author = {Ercan Serif, Kaya and 片山, 拓朗 and Katayama, Takuro and Yamao, Toshitaka and エルカヌ セリフ, カヤ and 片山, 拓朗 and Katayama, Takuro and 山尾, 敏孝}, issue = {2}, journal = {International Journal of Civil Engineering and Technology (IJCIET)}, month = {Mar}, note = {application/pdf, 論文(Article), A newly designed structure named folded cantilever shear structure (FCSS) is proposed as an alternative seismic isolation approach that combines coupling method and roller bearings in one structure for improving earthquake resistant ability and seismic performance of mid-rise buildings. Seismic characteristics of the proposed structure have been investigated by conducting numerical analyses on the idealized vibration model with and without additional viscous dampers. Dynamic parameters such as natural frequencies,damping ratios and mode shapes, and seismic responses due to elastic dynamic response analysis were also obtained under four exemplary ground motions, namely El-Centro, Hachinohe, Miyagi and Taft earthquakes. The proposed structure consists of fix-supported shear sub-frame and movable shear sub-frame supported by roller bearings, and these fullyseparated sub-frames were rigidly connected by a connection sub-frame at the top point. This will allow all three sub-frames to behave as a unique structure to increase the overall seismic performance. It was found that the proposed structure is capable of extending natural period and minimizing accelerations, displacements and base shear forces simultaneously, when compared to ordinary structure which has the same number of storey. However, relative displacements, for the proposed structure without additional dampers, with respect to the base were obtained relatively higher. Therefore, additional viscous dampers were added between adjacent beams to connect both sub-frames with the aim of avoiding excessive displacements and increasing the damping ratio as well.}, pages = {58--79}, title = {SEISMIC CHARACTERISTICS OF THE FOLDED CANTILEVER SHEAR STRUCTURE}, volume = {4}, year = {2013}, yomi = {カタヤマ, タクロウ and カタヤマ, タクロウ and ヤマオ, トシタカ} }