为探究空心薄壁桥墩延性性能,基于弯矩-曲率关系分析,对衡量其延性的指标,即曲率延性系数进行了研究。分析了壁厚对空心薄壁桥墩延性的影响,并与相同整体尺寸的实体桥墩进行了比较。结果表明,相同轴压比下,空心薄壁桥墩延性要优于实体桥墩;然而,在相同轴力作用下,空心薄壁桥墩的延性要劣于实体桥墩。 In order to investigate the ductility of hollow thin-walled pier, the ductility index, curvature ductility coefficient, was studied based on the analysis of moment-curvature relationship. The influence of wall thickness on the ductility of hollow thin-walled piers is analyzed and compared with the physical pier with the same overall size. The results show that under the same axial compression ratio, the ductility of hollow thin-walled piers is better than solid piers; however, the ductility of hollow thin-walled piers is lower than that of solid piers under the same axial force.