钢筋混凝土构件纯扭极限强度计算

The Calculation for Ultimate Pure Torsional Strength of Reinforced Concrete Beams

根据变角空间桁架理论，在考虑莫尔应力谐调条件和混凝土软化基础上，提出了钢筋混凝土纯扭构件受扭破坏形态的判别准则，并建立了纯扭极限强度的计算方法。通过与试验结果的对比，计算值与试验值符合较好，且具有较高的计算精度。

Based on the variable angle space truss theory, a failure criterion for pure torsion is presented and a claculation method is established for ultimate pure torsional strength of reinforced concrete beams, which considers the Mohr stress compatibility and the softened constitutive laws of concrete. Compared with the experimental results, the theory shows a good agreement and high precision.