(1天津大学建筑工程学院， 天津 300072； 2 天津大学建筑学院， 天津 300072；3 天津大学滨海土木工程结构与安全教育部重点实验室， 天津 300072)

［摘要］对2根偏心距不同的L形无孔钢板连接式方钢管混凝土组合异形柱进行压弯简化模拟研究，并对简化模型及实体模型进行了破坏模态、竖向承载力、侧向位移3方面的对比，结果表明：简化模型基本能够合理有效地模拟L形无孔钢板连接式方钢管混凝土组合异形柱的压弯性能；在简化模型的基础上，对异形柱的压弯性能进行了参数化分析，分析发现提高钢材强度能有效改善柱承载力，提高混凝土强度、连接板厚度对柱承载力及延性没有明显影响，柱承载力会随着偏心距的增加而不断下降，且下降程度不断减小。

［关键词］L形组合异形柱； 简化模型； 压弯模拟； 参数化分析

中图分类号：TU398文献标识码：A文章编号：1002-848X(2019)06-0061-05

Simplified simulation study on compression-bending behavior of L-shaped special-shaped concrete-filled square steel tubular composite columns connected with non-porous steel plates

Jiang Baoqi1, Zhou Ting2, Chen Zhihua1,3, Li Yanbo1

(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 School of Architecture, Tianjin University, Tianjin 300072, China; 3 Binhai Civil Engineering Structure and Security Key Laboratory of the Ministry  of Education, Tianjin University, Tianjin 300072, China)

Abstract:Simplified simulation study was carried out on compression-bending behavior of  two L-shaped special-shaped concrete-filled square steel tubular composite columns  connected with non-porous steel plates of different eccentricities. The comparison of failure modes, vertical bearing capacity and lateral displacement between the simplified model and the solid model was made. The results show that the simplified model can reasonably and effectively simulate the compression-bending behavior of  special-shaped concrete-filled square steel tubular composite columns with non-porous steel plates. On the basis of simplified model, the parametric analysis of the compression and bending performance of  special-shaped columns was carried out to find that increasing steel strength can effectively improve the bearing capacity of columns. The improving concrete strength and the thickness of connection plate has no obvious influence on the bearing capacity and ductility of columns. The bearing capacity of columns decreases with the increase of eccentricity, and the degree of decline decreases.

Keywords:L-shaped special-shaped composite column; simplified model; compression-bending simulation; parametric analysis

作者简介：蒋宝奇，硕士，Email:523709066@qq.com。