（内蒙古科技大学建筑与土木工程学院,包头 014010）

［摘要］为研究带垫板的双肢背靠背C型钢轴压短柱的极限承载力，通过试验和有限元分析两种方法对7个该截面类型的短柱进行承载力分析,了解组合柱的破坏形态,得到C型钢型号、垫板厚度和垫板间距等参数对组合短柱的受力性能的影响程度，为该类型构件在实际工程中的应用提供一定的依据。

［关键词］冷弯薄壁C型钢;短柱;试验研究;有限单元法;极限承载力

中图分类号：TU392.5      文献标识码：A       文章编号：1002-848X(2013)S1-1447-04

Analysis on load-carrying behavior of axial compression short column with gusset plate between double back-to-back C steel

Chen Ming, Bian Wei, Sun Fangfang, Sun Yang

(Architectural and Civil Engineering Institute, Inner Mongolia Scientific and Technical University, Baotoun 014010, China)

Abstract: To study the ultimate bearing capacity of axially-loaded double back-to-back C steel short column with gusset plate, seven short columns of this section type were analyzed bearing capacity by experiment and finite element analysis, to understand the destroyed form of the composite columns, and the degree of influence of C steel model, plate thickness and plate spacing on composite columns’loading behavior was got, and provided a basis for the application of this type of structure in practical engineering.

Keywords: cold-formed thin-walled C steel;short column; experiment research;finite element analysis; ultimate bearing capacity