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吳邦達 （中國兵器工業(yè)第五設計研究院 北京 100053）
[提要] 混凝土結(jié)構(gòu)設計規(guī)范( GBJ10-89)關于鋼筋混凝土雙向受彎正截面承載力的近似計算，僅適用于集中配置縱向受拉鋼筋的截面，使用范圍易受到限制。采用極限平衡理論計算強度和平截面假定限制受壓區(qū)，提出了另一近似法，可用于分散及集中配筋。算例表明，該方法具有較高的精度。
[關鍵詞] 鋼筋混凝土 雙向受彎 分散配筋 受壓區(qū) 性能 限制條件In code GBJ10-89, the approximate calculation for normal sectional load bearing capacity of reinforced concrete members subjected to biaxial bending is limited to set concentrated longitudinal reinforcements. The range of application is smaller. Another approximate calculation method obtained by calculating strength with equilibrium theory of ultimate strength and restricting compression area of concrete with plane-section assume may be used to set dispersed and concentred longitudinal reinforcements, and its accuracy is higher.
Keywords: biaxial bending; dispersed reinforcements; restrictive condition; compression area; concrete
