摘要
根据李国豪教授的桁梁桥挠曲扭转理论，针对钢筋混凝土梯形截面桁梁桥的侧倾稳定性进行了研究。基于结构体系的变分原理，本文导出了梯形截面桁梁桥侧倾失稳微分方程及相应的边界条件，通过采用伽辽金法得到了相应的侧倾失稳临界荷载ｑ（ｃｒ），文末给出了一个实际工程算例。
In this paper, the theory. of flexure and torsion for the truss beam bridge is adopted to drive differential equations of the elastic lateral stability for the truss beam bridge with a trapezoid section. The lateral stability of a simply supported truss beam bridge is analyzed by using the Galerkin's method. Finally the critical load q_(cr) for its lateral instability is obtained.
出处
《工程力学》
EI
CSCD
1995年第3期55-62,共8页
Engineering Mechanics
关键词
梯形截面
侧倾稳定性
桁梁桥
钢筋混凝土
truss beam bridge with trapezoid section
analysis of lateral stability
flexure and torsion theory for truss beam bridge
