ABSTRACT

This paper investigates the seismic behavior of the rectangular-reinforced concrete columns subjected to pure flexure, pure torsion, and combined flexural-torsional loadings using 4 quarter-scaled experimental specimens. During flexural-torsional loading, the axial rotation to the relative displacement ratios were considered to be 2 and 4. The ultimate displacement capacity and the flexural moment capacities of the specimens under combined flexural-torsional loadings were found to be decreased compared to the pure-flexural case for different rotation over drift ratios. An equation expressing the interaction curve between the flexural and torsional moment strength capacity of rectangular-reinforced concrete sections is proposed.

摘要

本文研究了矩形钢筋混凝土柱在纯弯曲、纯扭转和弯曲-扭转组合载荷下的抗震性能，使用 4 个四分之一比例的实验试样。在弯扭载荷期间，轴向旋转与相对位移的比率被认为是 2 和 4。与纯 -不同旋转漂移比的弯曲情况。提出了一个表达矩形钢筋混凝土截面抗弯抗扭承载力相互作用曲线的方程。