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基于平截面假定，根据截面中型钢所处的位置不同．建立了包含型钢和混凝土应变比βａ（反应型钢屈服程度）的实腹式ＳＲＣ梁正截面承载力计算公式和相应验算条件及中和轴的界限值。
Based on the flat section assumption, according to the different location of the section steel. The calculation formula for the normal section bearing capacity of the solid-section SRC beam, including the strain ratio βa of the steel and concrete (the yield strength of the reactive steel), and the corresponding checking conditions and the limits of the neutral axis were established.