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在考虑粘结滑移的基础上采用ABAQUS有限元软件对钢骨混凝土纯扭构件的受扭性能进行了研究。将采用叠加法计算所得的结果与有限元分析值进行对比,理论计算值偏低,较为保守。以ABAQUS有限元分析数据为基础,在传统的叠加原理上考虑了钢骨与混凝土的相互作用以及箱型钢骨内部核心混凝土的抗扭作用,结合现行规范、变角空间桁架模型理论及塑性理论,建立了较为满意的箱型钢骨混凝土纯扭作用下的极限扭矩计算方法。
On the basis of considering the bond slip, the ABAQUS finite element software was used to study the torsional behavior of SRC members. The results obtained by the superposition method are compared with those of the finite element analysis, and the theoretical values are low and conservative. Based on the ABAQUS finite element analysis data, the traditional superposition principle is taken into account of the interaction between steel and concrete and the torsional resistance of the core concrete inside the box steel. Based on the existing code, the space truss model theory and the plasticity theory, A satisfactory method for calculating the ultimate torque of box steel reinforced concrete with pure torsion was established.