单调扭矩下角钢桁架型钢混凝土构件复合受扭性能研究

针对我国目前型钢混凝土在实际工程中的广泛应用,而国内外对型钢混凝土复合受扭构件研究极少,通过制作3根承受单向压、弯、剪、单调扭矩复合作用下的角钢桁架型钢混凝土构件,以轴压比和扭弯比为研究参数,揭示了角钢桁架型钢混凝土柱复合受扭作用下的破坏特征和裂缝发展规律;对复合受力构件在扭矩作用下的非线性性能（包括扭矩-扭率关系、开裂扭矩、延性和承载力）进行了深入研究.

Study on the combined torsion behavior of angle steel truss reinforced concrete members under humdrum torques

The steel reinforced concrete is widely used nowadays in China; however, few experiments have been carried out on the steel reinforced concrete members subjected to the combined torsion. Based on the 3 angle steel truss reinforced concrete columns subjected to axial compression, shear and humdrum torque, the failure modes and development regularity of cracks are presented by using the change of axial stress level and torsionbending ratio. The paper also discusses the non-linear behaviors of the angle steel truss reinforced concrete columns under the combined torque, including the curve between torsion and torsional rate, cracking torque, ductility and carrying capacity.