@article{oai:ir.kagoshima-u.ac.jp:00004674,
 author = {徳広, 育夫 and TOKUHIRO, Ikuo and 三谷, 勲 and MITANI, Isao and 宮崎, 博茂 and MIYAZAKI, Hiroshige and 杉山, 宏 and SUGIYAMA, Hiroshi and 谷田, 正人 and YATSUDA, Masato},
 journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University},
 month = {Nov},
 note = {When a frame with wall is subjected to lateral forces, and its angular shear distortion becomes 0.2~0.3×10^<-3> rad., shear cracks occur in the wall. Even if the frame reaches this degree of the distortion, cracks due to bending or shear don't occurred in the column or beam of a frame without wall. However, if developed shear cracks in the shear wall penetrate through the boundary frame and strength of the shear wall shows a sudden decrease, ductility of the frame with the wall can't be expected. In oder to make the framed wall bear shearing stresses up to large distortion (e.g. up to the limitation of angular shear distortion, 1/200 deformation from floor to floor as shown in the section 82-2 of the 1982' Building Standard Laws), walls should be reinforced by the frame enough to obtain ductility against lateral forces and to prevent wide opencracks.
References 1) and 2) show that ductility of a wall can be maintained, if the boundary frame prevents expansion of the surface area of the wall which is unisotropic due to shear cracks. Accordingly, in order to design the ductile shear walls, following items may be presented.
i) The increasing number of reinforcing bars in the wall are effective to prevent the development of shear cracks.
ii) The walls should be surrounded with rigid frames so as to obtain ductility against lateral forces.
This study deals with the item of ii). "A.I.J. Structural Standard of Reinforced Concrete" (1982) recommends that the size of boundary frame must be large ; cross sectional area of columns and beams is not less than st/2 and minimum depth or width of column and beam is not less than...[the rest omitted]},
 pages = {27--48},
 title = {繰り返し荷重を受ける鉄筋コンクリート造耐震壁の弾塑性性状に関する実験的研究 : （その2）周辺架構の構造形式がひび割れ性状及び最大耐力に及ぼす影響},
 volume = {25},
 year = {1983}
}