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本文分析了不同配筋钢筋混凝土受扭构件的M_(T—φ)曲线,提出钢筋混凝土受扭构件的适筋破坏与部份超筋破坏均应属于延性破坏.因而在设计受扭构件时其目标可靠指标β应按延性构件取值。文中对新的(混凝土结构设计规范)(送审稿)的钢筋混凝土受扭构件强度计算式进行了可靠度分析,得出该计算式的可靠指标β达到了(建筑结构设计统一标准)规定的β值的要求。
In this paper, the M_(T-φ) curves of the torsion members of reinforced concrete with different reinforcements are analyzed. It is proposed that both the proper reinforcement failure and the partial over-reinforcement failure of reinforced concrete torsion members should be classified as ductile failure. The target reliability index β should be based on the value of ductile members. The reliability analysis of the reinforced concrete torsion member strength calculation formula for the new (concrete structural design specification) (draft for manuscript) was performed, and the reliability index β of the calculation formula was reached (the unified standard for architectural structure design). The requirement of β value.