复合受力下焊接栓钉SRC柱抗扭承载力计算

Calculation of torsional bearing capacity of SRC column with welded bolts under compound stress

为研究压、弯、剪、扭复合受力下焊接栓钉型钢混凝土(SRC)柱的抗扭承载力计算方法,基于滞回性能试验结果,分析了试验过程和破坏形态,利用了空间桁架理论与叠加原理,提出了复合受力下焊接栓钉SRC柱抗扭计算模型和强度统一方程。结果表明:所提出的强度统一方程和抗扭承载力计算方法的计算结果与试验结果均值误差均在3%内,吻合较好。

In order to study the calculation method of torsional bearing capacity of welded stud steel reinforced concrete(SRC) columns under combined compression, bending, shear and torsion forces, based on the hysteretic test results, the test process and failure mode are analyzed. Using the space truss theory and superposition principle, the torsional bearing capacity calculation model and unified strength equation of welded stud SRC columns are proposed. The results show that the calculation results of the proposed unified strength equation and torsional bearing capacity calculation method are in good agreement with the test results, and the mean error of the calculation results is within 3%.