钢筋混凝土结构正截面承载力统一算法研究

Analysis on Calculation Method of Section Capacity of Reinforced Concrete

针对现行《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTG 3362—2018)中对于形状规则的矩形、T形、I形、圆形截面计算正截面承载力时需根据受力状态选择不同计算公式的问题,参考《混凝土结构设计规范(2015年版)》附录E.0.1中的推荐算法,通过改进混凝土域应力积分算法,提出了钢筋混凝土结构正截面承载力统一算法。将此统一算法应用于设计工作,可大大提高设计效率。

On the issue that different formulas should be selected when calculating the carrying capacity of rectangular,T-shaped,I-shaped and circular sections according to the current Specifications for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts(JTG 3362-2018),an improved concrete stress integral method is proposed in this paper with reference to Appendix E.0.1 of Code for Design of Concrete Structures(2015 Edition).The application of this unified algorithm to the design work can improve the design efficiency greatly.