压弯剪扭构件抗扭刚度是研究结构整体扭转性能的基础,在已有试验的基础上,给出了便于查用的构件抗扭刚度-扭转角退化曲线；通过对试验数据及抗扭刚度计算公式的参数分析,探讨了构件抗扭刚度的各种影响因素.结果表明:纵横钢筋强度比在1附近时构件的抗扭刚度最大,轴压比、偏心距、剪扭比与弯扭比的增大使得构件抗扭刚度降低.%Torsion stiffness of reinforced concrete compression - flexure - shear - torsion components is the base of the research on the structural torsion performance. The degradation graph between torsion stiffness and angers was presented according to the experiments data, and the various influence factors were discussed according to the experimental results and the parameter analysis of the formula for torsion stiffness. It is shown that torsion stiffness will be maximal when the intensity ratio of longitudinal steel to traverse steel is equal to 1, and the increase of the ratio of axial compressive force to axial compressive ultimate capacity of section, the eccentricity, the ratio of shear to torsion, and the ratio of moment to torsion make the torsion stiffness depredate.
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