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Mechanical behaviour of partially encased composite columns confined by CFRP under axial compression
Jiongfeng Liang,Guangwu Zhang,Jianbao Wang,Minghua Hu 국제구조공학회 2019 Steel and Composite Structures, An International J Vol.31 No.2
This paper presents the results of an experimental study to investigate the mechanical behavior of partially encased composite columns confined by CFRP under axial compression. The results show that the failure of the partially encased composite columns confined by CFRP occurred due to rupture of the CFRP followed by local buckling of the steel flanges. External wrapping of CFRP effectively delayed the local buckling of the steel flanges. The load carrying capacity of the column increased with the application of CFRP sheet. And the enhancement effect of the column was increased with the number of CFRP layer.
Tests of concrete slabs reinforced with CFRP prestressed prisms
Jiongfeng Liang,Deng Yu,Ze-Ping Yang,Xinjun Chai 사단법인 한국계산역학회 2016 Computers and Concrete, An International Journal Vol.18 No.3
This paper reports the testing of concrete slabs reinforced with CFRP prestressed concrete prisms(PCP) on the flexural behavior. Four concrete slabs were tested, a reference slab reinforced with steel bars, and three slabs reinforced with CFRP prestressed concrete prisms (PCP). All slabs were made with dimensions of 600mm in width, 2200mm in length and 150 in depth. All concrete slabs reinforced with CFRP prestressed concrete prisms(PCP) exhibited CFRP bar rupture failure mode. It was shown that the application of the CFRP prestressed prisms can limit service load deflections and crack width, the increased level of prestress in the CFRP prestressed prism positively affected the maximum crack width. The deflection of concrete slabs reinforced with CFRP prestressed prisms decreased as prestress in the CFRP prestressed prism increased.
Effect of crumb rubber on compressive behaviour of CRCFST stub columns
Dawei Liu,Jiongfeng Liang,Guangwu Zhang,Jianbao Wang 사단법인 한국계산역학회 2020 Computers and Concrete, An International Journal Vol.25 No.3
This paper investigates the effect of crumb rubber (CR) on compressive behaviour of crumb rubber concrete filled steel tube (CRCFST) stub columns. Therefore, experiments on 16 stub columns subjected to axial loading are carried out. The results show that the failure modes of CRCFST stub columns with different CR replacement ratios and CR size are similar, manifested the buckling of the outer steel tube. The axial bearing capacity and stiffness both decrease with an increase in CR replacement ratio, and with decreasing CR size.