初始几何缺陷对大跨钢管砼拱桥极限承载力的影响

为分析初始几何缺陷对钢管混凝土拱桥极限承载力的影响程度，利用有限单元法，通过施加不同大小和形式的初始几何缺陷来研究其对钢管混凝土拱桥极限承载力的影响。模拟结果表明，初始几何缺陷对钢管混凝土拱桥极限承载力的影响是明显的，在实际工程中应予以重视。

Influence of initial geometry defect on ultimate bearing capacity of CFST arch bridge

Aimed at analyzing the influence degree of initial geometry defect on the ultimate bearing capacity CFST arch bridge, the paper introduces the study of influence of initial geometry defect on the ultimate bearing capacity of Concrete-Filled Steel Tubular arch bridge through applying different scale and different form initial geometry defects by finite elements method. The simula- tion results show that initial geometry defects can exert an evident influence on the ultimate bearing capacity of CFST arch bridge. The paper suggests a greater attention to the application of initial geometry defects in practical engineering.