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一、概况按我国规范TJ10—74设计钢筋混凝土构件的抗扭配筋时,应独立地计算抗弯钢筋、抗剪钢筋和抗扭钢筋。即按叠加原理考虑。 1945年,瑞典H.Nylader研究了弯曲和扭转共同作用下钢筋混凝土构件的强度问题,1958年,苏联对弯扭共同作用下矩形断面梁的斜弯破坏面引用平衡条件,提出了新的分析方法。这种方法自1962年起已被纳入苏联规范。近年来,用于弯扭共同作用下的极限平衡方法在国外发
I. Overview When designing torsional reinforcement of reinforced concrete structures according to the Chinese specification TJ 10-74, the bending resistance steel, shear reinforcement, and torsion reinforcement should be calculated independently. That is, according to the principle of superposition. In 1945, H. Nylader of Sweden studied the strength of reinforced concrete members under the joint action of bending and torsion. In 1958, the Soviet Union cited the equilibrium conditions of oblique bending failure surfaces of rectangular cross-section beams under the combined action of bending and twisting, and proposed a new analysis method. . This method has been incorporated into Soviet norms since 1962. In recent years, the limit equilibrium method used for bending and twisting has been developed abroad.