从简支梁桥弯矩图谈桥梁结构体系的演变

On bridge structural system evolution from moment diagram of simple-supported beam bridge

桥梁结构体系是桥梁工程中的重要教学内容。常规教学方法是根据教材内容,逐一讲解结构体系,不仅效果差,而且缺乏系统性和内在连贯性。文章从简支梁桥弯矩图出发,围绕如何减小梁内弯矩、增大桥梁跨度,推演出桥梁工程中所有的结构体系。

leaching contents oi nrloge ~tlut;tulaJt ~y^t~t11~ ax~ v,~ly ,Ll,V ~ o-- ,~ the traditional teaching method, the structural systems are independently explained according to the text content. The teaching effect is poor, non-systematic, and inconsistent. Starting from the moment diagram of the simple- supported beam bridge, we presented how to reduce the bending moment of beam and performed evolution of all bridge engineering structural systems.