中文摘要：

为研究实腹式型钢混凝土梁在扭矩作用下的受力性能,进行了6根不同参数实腹式型钢混凝土梁和1根钢筋混凝土梁的纯扭试验。试验结果表明：实腹式型钢混凝土受扭构件与钢筋混凝土受扭构件的开裂机会相等,可以忽略型钢对开裂扭矩的影响;但型钢对极限扭矩有大幅提高作用,并有效改善了构件的延性;减小箍筋间距和增大配钢率可以提高型钢混凝土构件的受扭承载力。通过分析提出了型钢混凝土纯扭构件开裂扭矩和极限扭矩的计算公式,计算结果与试验结果吻合较好。

英文摘要：

In order to study the torsional behavior of steel reinforced concrete beams, experiments were conducted on six steel reinforced concrete beams with different parameters and one reinforced concrete beam subjected to pure torsion. Test and analysis results show that the cracking torque is almost the same for steel reinforced concrete structures and reinforced concrete structures with torsion. The influence of steel on the cracking torque can be neglected. Steel can greatly improve the ultimate torque and the ductility. The torsion resistance loading of SRC structures can be increased by decreasing the stirrup spacing or increasing sectional steel area ratio. The formulaes about cracking torque and ultimate torque were presented. The predicted results are in good agreement with the measured ones.