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(中國(guó)農(nóng)業(yè)大學(xué)水利與土木工程學(xué)院  北京 100083)

［提要］ 基于薄板理論的Navier解和鋼筋優(yōu)化分析，分別建立了保證鋼筋混凝土板板底抗裂性能最優(yōu)和配筋量最少的塑性彎矩比取值優(yōu)化方法。通過(guò)對(duì)比，得出了工程中板底彎矩取值的建議公式。板底彎矩比取不同值，可以分別得到抗裂和配筋的優(yōu)化結(jié)果。

［關(guān)鍵詞］  鋼筋混凝土板  塑性設(shè)計(jì)  彎矩比  抗裂  配筋優(yōu)化設(shè)計(jì)

Probe of Adoption of Plastic Bending Moment Ratio in Rectangle Reinforced Concrete Slabs/Jiang Xiugen, Ju Jinsan, Zhuang Jinzhao (Dept. of Civil Engineering, China Agricultural Univ., Beijing 100083, China)

Abstract:The optimized adoption methods of plastic bending moment ratio are derived to  make the anticrack capability best and the mount of steel least separately for reinforced concrete slab bottom based on Navier solution and steel optimization of the thinslab theory. Through comparison, the suggested formulas are obtained for the adoption of slab moment in reinforced concrete slab bottom in engineering.

Keywords:RC slabs; plastic design; bending moment ratio; anticrack; optimum design of reinforced bar