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曾慶響 （五邑大學土木工程系 江門 529020）
[提要] 在分析國內(nèi)外文獻資料的基礎上，根據(jù)《混凝土結構設計規(guī)范》( GB50010-2002)規(guī)定的單向受彎構件正截面承載力計算方法，利用疊加原理，將雙向受彎構件的計算轉化為單向受彎構件計算，提出了適用于雙向受彎構件且無須試算的截面設計方法，使復雜的計算過程得以簡化。與公認的平截面法的計算結果比較表明，該方法可行，精度高。
[關鍵詞] 鋼筋混凝土 雙向受彎構件 正截面承載力 疊加原理 設計方法Based on analysis of reference data at home and abroad, according to the calculation method for normal section bearing capacity of reinforced concrete beam subjected to single bending in Code for design of concrete structures ( GB50010-2002) and superposition theorem, a convenient design method without trial-and-error procedure for normal section bearing capacity of reinforced concrete beam subjected to biaxial bending is established. lt is justified from the comparison to hypothesis of maintain plane sectional strain method that the design method is feasible and has high precision.
Keywords: reinforced concrete; biaxial bending member; superposition theorem; design method
