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GB50010-2002《混凝土结构设计规范》(以下简称“规范”)分别按纯弯和纯扭进行弯扭构件承载力计算。基于国内外大量试验数据的分析表明,该设计计算方法与试验结论相矛盾,未能正确反映构件的受力状态,使得计算值与试验数据拟合较差且偏于不安全,可靠指标偏低,不能满足GB50068-2001《建筑结构可靠度设计统一标准》(以下简称《统一标准》)的要求,配筋需要较大幅度地提高。通过对现有试验数据的分析,给出了基于1/4圆弧模型的建议修正公式和其相应的计算方法,该公式考虑了构件的整体受力相关性,具有明确的物理意义,配筋能返回公式验算。分析结果表明:该文建议的修正公式比规范公式的计算模式准确,可靠指标满足《统一标准》的要求。
GB50010-2002 “Design Code for Concrete Structure” (hereinafter referred to as “Code”), respectively, according to pure bending and pure torsion torsion torsion member bearing capacity calculation. Based on a large number of experimental data at home and abroad, it shows that the design calculation method contradicts the experimental conclusion and fails to correctly reflect the force state of the component, which makes the calculated value and the experimental data fit poorly and unsafely with low reliability index , Can not meet the requirements of GB50068-2001 “Unified Standard for Reliability Design of Building Structures” (hereinafter referred to as “uniform standards”), and the reinforcement needs to be greatly improved. Based on the analysis of the existing test data, the proposed correction formula based on 1/4 arc model and its corresponding calculation method are given. The formula takes into account the overall force dependence of the component, has clear physical meaning, Can return to formula checking. The analysis results show that the proposed correction formula is more accurate than the standard formula and the reliability index meets the requirement of “unified standard”.