Analysis of the composite effect of partially concrete-encased H-shaped steel composite columns. (December 2015)

• Record Type: Journal Article
• Authors: Yin, Z. Z.; Chen, S. L.; Liang, Y. X.; Chen, W.
• Is Part Of: Materials research innovations. Volume 19(2015)Supplement 10
• Page Start: S10-133
• Page End: S10-138
• Publication Date: 2015-12
• Subjects: Partially encased composite column -- H-shaped steel -- Bearing capacity -- Confined concrete; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1432891715Z.0000000002124
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract : To research the composite effect of partially concrete-encased composite columns, the axial compression analysis of three groups of 12 specimens (six H-shape steel partially concrete-encased composite columns and six H-shape steel columns) was conducted by using the commercial finite element software ANSYS. The results show that partially concrete-encased composite columns possess sound mechanical performance as demonstrated by higher ultimate strength, deformability, stability and lateral stiffness than bare steel columns. The total cross-section of concrete and steel of partially concrete-encased composite columns both yield when specimens are damaged, showing better compatibility for deformation. Partially concrete-encased composite provides good restraint for H-shaped steel to prevent local buckling, and the H-shaped steel confines the concrete, increasing its strength and ductility. Moreover, there is superior interaction effect between the concrete and the steel.