高層壁式ラーメン鉄筋コンクリート造建物における壁柱の曲げ降伏後の靭性に関する実験的研究

概要

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Seismic tests of thirteen columns with large depth (D)-to-width (b) ratio (hereafter referred to as "Wall Columns") were conducted. The main variables in the tests were : 1) confinement in the compression zone, 2) depth-to-width ratio, 3) presence of transverse walls, and 4) axial stress level. All of the speciments behaved in a ductile manner, and their final failure was caused by the crushing of concrete in the compressive edge zone. The following conclusions concerning the deformation capacity were obtained from this tests and investigations. (1) Confinement of concrete in the compressive edge zone is very effective to increase the deformation capacity of wall columns. (2) The deformation capacity dramatically decreases when the depth-to-width ratio of wall columns increases. (3) The wall columns with transverse walls behave in a ductile manner more than the wall columns without them if they are in the compression zone. (4) The smaller the axial stress level is, the greater the deformation capacity is. (5) The deformation capacity can be estimated by the flexural theory if the stress versus strain relation of confined concrete, including the negative slope after the maximum compression strength is properly defined.
社団法人日本建築学会の論文
1990-04-30