Technical gazette, Vol. 26 No. 4, 2019.
Original scientific paper
https://doi.org/10.17559/TV-20190409093839
Testing and Analysis of Concrete-Filled Square Hollow Section Stub Columns with Perfobond Leister Rib
Gao Cheng
; (1) School of Highway, Chang’an University, Xi’an, Shaanxi, China / (2) Shaanxi Provincial Major Laboratory for Highway Bridge & Tunnel, Xi'an, Shaanxi, China
Yongjian Liu
; (1) School of Highway, Chang’an University, Xi’an, Shaanxi, China / (2) Shaanxi Provincial Major Laboratory for Highway Bridge & Tunnel, Xi'an, Shaanxi, China
Hui Li
; School of Highway, Chang’an University, Xi’an, Shaanxi, China
Ning Zhang
; College of Water Resources and Architecturally Engineering, Northwest A&F University, Yangling, Shaanxi, China
Jufeng Su
; (1) School of Highway, Chang’an University, Xi’an, Shaanxi, China / (2) Shaanxi Provincial Major Laboratory for Highway Bridge & Tunnel, Xi'an, Shaanxi, China
Abstract
Perfobond Leister Rib (PBR) is found to improve the bond strength in concrete-filled hollow section and the capacity of the steel plate to resist local buckling. An experimental investigation of 12 test specimens is firstly carried out on the behavior of concrete-filled square hollow section CFSHS) stub columns with PBR. To examine different mechanical behaviors of the columns utilized in bridge or building structure, different loading methods are investigated; e.g., loading through steel alone, loading through concrete alone and loading through the whole cross section. The failure mode, strain distribution, ultimate strength and the confinement of the concrete core offered by the steel tube are studied. The test results showed that CFSHS tubular columns with PBR are emulative of the conventional columns. PBR can make the steel tube and filled-in concrete work together, which results in the axial load shared by hollow steel section and filled-in concrete section regardless of loading through steel or concrete alone. The axial strain distribution model of steel tube section along the height for CFSHS with PBR is proposed.
Keywords
concrete-filled hollow section; experiments; loading method; Perfobond Leister Rib; square hollow section; stub columns
Hrčak ID:
223306
URI
Publication date:
25.7.2019.
Visits: 1.818 *