鉄筋コンクリート造耐震壁の拘束筋による靭性確保に関する実験的研究

概要

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In high-rise buildings with the core wall system, which consists of four L-shaped core walls, the axial load of the core wall is remarkably very high under the action of a diagonal seismic force. Particularly the corner and the area near the corner of the L-shaped core wall are subject to high compressive stress. Reinforcing these areas is therefore considered effective in improving the deformation capacity of the core walls. This paper examines the relationship between the confinement rate or reinforcing arrangement of these areas and the deformation capacity of the core wall. Evaluation was based on the results of core wall lateral loading and compression tests. And, based on the lateral loading tests results of L-, T-, H-shaped core walls and wall columns, edge confinement index was proposed. This index consists of confinement effect of concrete, confinement area, axial stress level, and depth-to-width ratio. The relationship between edge confinement index and limit drift angle was shown.
一般社団法人日本建築学会の論文
2003-03-20