以我国首座刚性悬索加劲钢桁梁桥——东江大桥为研究对象,利用有限元分析软件ANSYS,考虑双重非线性,对刚性悬索加劲钢桁梁桥的极限承载力进行了参数研究。研究参数包括几何初始缺陷、风荷载作用、钢材屈服强度、桥面板是否参与受力等,探讨了这些参数对刚性悬索加劲钢桁梁桥最大悬臂阶段和成桥阶段极限承载力的影响。 Taking the first rigid suspension bridge with steel truss girder bridge - Dongjiang Bridge as the research object, the finite element analysis software ANSYS was used to study the ultimate bearing capacity of the rigid suspension steel-reinforced steel truss girder bridge considering the double nonlinearity. The research parameters include initial defects of geometry, wind load, yield strength of steel, whether bridge deck is involved in force, etc. The effects of these parameters on the ultimate bearing capacity of the maximum cantilever and completion stages of rigid-suspension stiffened steel truss girder bridge are discussed.