二軸曲げせん断力を受ける鉄筋コンクリート柱の3次元弾塑性FEM解析 : 有限要素法による鉄筋コンクリート部材の3次元弾塑性解析

概要

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The test specimens were cantilevers with a constant axial force, which were deformed by actuators in two horizontal directions. The adopted hysteresis was circular displacements. The columns were analyzed by the non-linear Finite Element Method, which could deal with both three-dimensional condition and repeated reversal loading. The analyses were executed for two cycles at a constant displacement by input of forced displacements for loads as were done in the experiment. When analyzing a column under severe loading, such as hysteretic loops, the analysis becomes very severe because the direction of loads changes every moment. Consequently this analysis was aimed mainly at the qualitative investigation of the column. Obtained results are ; (1) The following features observed in the experiment are traced by the analysis (a) The hysteretic loop of shear forces is almost a circle. (b) The vector of shear forces precedes that of displacements in an angle. (2) The shear force-story deflection relation obtained by the experiment is traced. But the area surrounded by the hysteretic loop is small comparatively. (3) Strains of longitudinal and lateral reinforcements can be classified according to their location in the column. (4) Obtained axial stresses and strains of concrete show the fundamental feature that the neutral axis rotates in accordance with the loading loop.
社団法人日本建築学会の論文
1985-04-30