论文部分内容阅读
本文通过9根有定轴压力试件的抗剪强度试验,研究了箍筋在钢筋混凝土框架结构柱中的抗剪作用。试验结果表明,配箍率的增加不仅提高钢筋混凝土框架柱的抗剪强度而且有利于构件变形能力的发挥。但过多的配置箍筋並不能达到预期效果,建议构件斜截面强度上限值采用Q_p≤0.26R_abh_0为宜。本文分析了67个有轴压力试件的试验数据,按作者以前提出的两个计算公式核算,计算值与试验值较为吻合。因此所提出的计算公式同样适用于高配箍的钢筋混凝土框架结构柱。
In this paper, the shear strength test of nine test specimens with fixed-axis pressure is used to study the shear resistance of stirrups in reinforced concrete frame columns. The test results show that the increase of the stirrup ratio not only improves the shear strength of the reinforced concrete frame columns but also contributes to the exertion of the deformability of the components. However, the excessive configuration of stirrups does not achieve the desired effect. It is recommended that the upper limit of the strength of the diagonal section of the members should be Q_p≤0.26R_abh_0. This paper analyzes the experimental data of 67 axial compression test pieces, and calculates according to the two calculation formulas previously proposed by the author. The calculated values are in good agreement with the experimental values. Therefore, the proposed formula is also applicable to high-hoop reinforced concrete frame columns.