[提要]  根据钢筋混凝土梁的试验研究成果，并参照国内外规范的计算方法，对钢筋混凝土结构设计规范中关于梁承载力的计算方法进行了分析讨论，并建议了适用于任意跨高比的梁受弯承载力计算方法和受剪承载力计算方法。该建议计算方法对完善《混凝土结构设计规范》( GBJ10-89)和协调我国各行业的混凝土结构设计规范将起到一定的参考作用。
[关键词]  受弯承载力  受剪承载力  剪跨比  跨高比

According to the test results, and consulting the abroad and domestic design codes of concrete structures, the calculation methods of bearing capacity of beams which are used in design codes of concrete structures are analyzed and discussed. The improved calculation methods for bending and shearing are given which can be used for beams in any span-depth ratio. These improved calculation methods will have some helping on perfecting the Design Codes of Concrete Structure(GBJ10-89)and coordinating the other design codes of concrete structures which are used for special fields.
Keywords:  flexural bearing capacity; shearing bearing capacity; shear-span ratio; span-depth ratio