型钢混凝土纯扭构件极限扭矩计算理论研究

Study on Calculation Theory of the Ultimate Pure Torsional Torques of Steel Reinforced Concrete Members

在现有钢筋混凝土纯扭极限扭矩计算公式的基础上,基于叠加原理,对H型钢混凝土纯扭构件的极限扭矩计算公式进行了初步研究,提出了型钢混凝土纯扭构件的受扭承载力计算公式,并将计算值与试验值进行比较,计算值与试验值符合良好。比较了开口截面与闭口截面型钢的抗扭性能,结果表明在抗扭性能方面,闭口截面比开口截面具有很大的优越性。

Based on the existing calculation formula of the ultimate pure torsional torques of reinforced con- cretes, the calculation formula of the ultimate torque of the H - type SRC pure torsion members was preliminari- ly studied, and the calculation equation was put forward by adopting the superposition principle. The compari- son between calculation and test results showed that calculated results were in good agreement with the tested data. The torsional performance of the open section steel was also compared with the closed one, and the result manifested that the closed section had a great advantage in resisting torque over the other .