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研究了水电工程中广泛应用的低迭合面钢筋混凝土迭合梁的正截面受力性能．在综合分析现有高、低迭合面迭合梁试验成果的基础上，提出了水工钢筋混凝土迭合梁的二次受力特征系数β的计算公式，并讨论了纵向受拉钢筋的应力控制问题，供修订水工钢筋混凝土结构设计规范参考．
The normal cross-section mechanical behaviors of low-convex reinforced concrete composite beams widely used in hydropower engineering are studied. Based on the comprehensive analysis of the existing test results of high and low superimposed composite beams, a calculation formula for the secondary force characteristic coefficient β of hydraulic reinforced concrete composite beams is proposed, and the stress of the longitudinal tensioned reinforcement bar is discussed. Control problems, for the revision of hydraulic steel reinforced concrete structure design reference.