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基于平截面假定，提出了包含型钢和混凝土应变比（反映型钢屈服程度）的空腹式ＳＲＣ梁的正截面承载力计算公式和相应的验算条件。建议公式的计算结果与试验实测值吻合较好。
Based on the assumption of flat section, the formula for calculating the normal section bearing capacity and the corresponding checking condition of the SRC beam containing SRC beam (including the yield ratio of steel section and concrete) are proposed. The calculated result of the proposed formula is in good agreement with the experimental value.