【作者】 田广宇； 叶列平； 曲哲；

【Author】 Tian Guangyu, Ye Lieping, Qu Zhe(Department of Civil Engineering, Tsinghua University, Beijing 100084,China)

【机构】 清华大学土木工程系；

【摘要】 现行《混凝土结构设计规范》(GB50010-2002)中正截面承载力的计算方法是基于平截面假定的等效矩形计算方法。这种方法应用于对称配筋小偏心受压构件计算时很繁琐。采用叠加方法对正截面承载力的计算方法进行了简化。结果表明,叠加方法不仅以塑性理论下限解为理论基础,且所得到的简化计算公式简便适用,与平截面法和规范方法计算结果的误差在工程可接受的范围内。更多还原

【Abstract】 The calculation of flexural strength of reinforced concrete members in Code for Design of Concrete Structures (GB50010-2002) is the equivalent rectangle method based on the plane section assumption. This method is inconvenient to symmetrical reinforced members. A simplified method is proposed, which is based on the superposition theory. The superposition theory has the lower bound theorem of the plastic theory as its foundation. The simplified formula of the superposition theory is easy to use and its result is quite close to the accurate solution of the plane section method.更多还原