30階建RC造骨組の弾塑性解析 : 柱の変動軸力を考慮したRC造骨組の弾壁性解析(その2)

抄録

The authors previously presented an elastic-plastic analytical method of the reinforced concrete plane frame, which takes into account the fluctuation of axial forces on columns during earthquake excitation. This paper presents the results of analysis of 30 story R/C plane frame using this method above and clarifies the effects of the fluctuation of the axial forces on elastic-plastic behavior of R/C frames based on comparison with the results with constant axial forces. The following effects of varing axial forces on the elastic-plastic behaviors may be pointed out. 1. Varing axial forces affect the elastic-plastic behaviour of columns and beams significantly. 2. The bending crack and yield moments of exterior columns in tension tend to be smaller value by this method than those with constant axial forces on columns. 3. The shear forces of exterior columns in tension tend to be smaller value than the shear force of exterior columns in compression. It may be concluded that the elastic-plastic behaviors of heghrise R/C frames during earthquake are evaluated more precisely by the proposed method.