1.
論文(リポジトリ) |
李, 柱振 ; 本多, 良政 ; 加藤, 大介 ; 中村, 友紀子
概要:
2004年10月23日新潟県中越地震で被災した十日町市(震度6強)中心部の建物の被害の概要および耐震診断結果を報告する。建物Sは鉄筋コンクリート造4階建てで、1972年竣工である。階段室が建物の端部に位置し、耐震壁の配置が偏っている。また、
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ブロック造の間仕切り壁が多用されでおり、捩れ易い構造になっている。被害は振れにより一部の柱が大きく変形し、せん断破壊した。
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2.
論文(リポジトリ) |
加藤, 大介 ; 李, 柱振 ; 中村, 友紀子 ; 本多, 良政
概要:
Objectives of this study were to propose evaluating method of axial load carrying capacities of R/C columns after shear failure using experimental data reported in the previous paper. For this purpose two criteria were examined,
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i.e. Mohr-Coulomb criterion and slip criterion between shear crack surfaces considering friction. Effects of confinement given by various hoop reinforcing details were specially paid attention. Two assumptions were used, i.e. i)the cohesive stress was degraded due to damage of core concrete and ii)confining stress by hoop reinforcement was degraded due to damage of reinforcement depending on the details. Finally evaluating equations of maximum deflection angles of shear failing columns experienced before losing their axial load carrying capacities were propose according to two assumptions mentioned above.
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3.
論文(リポジトリ) |
加藤, 大介 ; 李, 柱振 ; 中村, 友紀子 ; 本多, 良政
概要:
Objectives of this study were to examine axial load carrying capacities of R/C columns after shear failure. For this purpose static loading tests of R/C columns were conducted. Confinement of hoop reinforcement to core concrete was
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one of the most important effects to be discussed so different hoop reinforcement details were studied, i.e. welded hoop for good confinement type, hoop with 135 deg hook for normal confinement type and hoop with 90 deg hook for poor confinement. Using these specimens centrical axial loading test to examine the basic confining effects and lateral loading test under constant axial load to examine the axial load carrying capacity were conducted.
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