摘   要：试验研究了4个配工字型钢混凝土梁试件和1个钢筋混凝土梁试件的剪扭性能，并用ABAQUS软件进行了数值模拟，分析了截面配钢率、混凝土强度、截面尺寸、箍筋间距对梁剪扭性能的影响。结果表明：模拟得到的扭矩-扭率曲线与试验值吻合较好；梁的极限扭矩随着截面配钢率的增大而增大，但当截面配钢率大于3.48%后，对极限扭矩的提高有限；随着混凝土强度的增加，梁的屈服扭矩和极限扭矩均增大，开裂扭率增大；梁的初始刚度、屈服扭矩、极限扭矩和延性均随着截面尺寸的增大而显著提升；提高截面配钢率和降低箍筋间距均可提升梁的延性。

Abstract: The shear torsional performance of four I-shaped steel reinforced concrete beams and one reinforced concrete beam was studied experimentally, and the numerical simulation was carried out with ABAQUS software, and the effects of section steel ratio, concrete strength, section size and stirrup spacing on the shear torsional performance of beams were analyzed. The results show that the simulated torque-torsion curves of the specimens are in good agreement with the experimental values. The ultimate torque of the beam increases with the increase of the section steel ratio, but when the section steel ratio is greater than 3.48%, the increase of the ultimate torque is limited. With the increase of concrete strength, the yield torque and ultimate torque of the beam increase, and the cracking torsion rate increases. The initial stiffness, yield torque, ultimate torque and ductility of the beam increase significantly with the increase of the section size. The ductility of the beam can be improved by increasing the section steel ratio and reducing the stirrup spacing.