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Experimental investigation on shear-bending performances of concrete-filled thin-walled corrugated steel tubes
Highlights Shear-bending tests conducted on 21 CFCSTs and 6 TRCs. Detailed discussions on failure modes, deformation curves, and load versus mid-span displacement responses. Analysis on strain/stress properties of CST and shear-bending working mechanism of CFCST. Design methods proposed for combined shear-bending bearing capacity interaction relationships of CFCST.
Abstract Concrete-filled galvanized corrugated steel tube (CFCST), is an innovative composite member, which is proposed for improving the ductility and durability of conventional reinforced concrete (RC) structures. In practice, combined shear-bending loads often exist in a CFCST pier/column. It is necessary to investigate the shear-bending working mechanism of CFCST and access the shear-bending bearing capacity interaction relationships for a more reasonable design. Twenty-seven columns including 21 CFCSTs and 6 TRC specimens are therefore tested comparably. The main test variables are the loading types, shear span-to-depth ratios, tube forms, and the end/support conditions. The test results show that a satisfactory deformative coordination among the core concrete, reinforcements, and CST can be obtained, resulting in a significant improvement in shear-bending performances compared with conventional RC structures. With the discussion of failure modes, deformation curves, load versus mid-span displacement responses, and strain/stress properties of CST, the shear-bending working mechanism of CFCST is particularly addressed. Based on the test results, reasonable design methods for predicting the individual shear/bending strength and the combined shear-bending bearing capacity interaction relationships of CFCST are proposed eventually.
Experimental investigation on shear-bending performances of concrete-filled thin-walled corrugated steel tubes
Highlights Shear-bending tests conducted on 21 CFCSTs and 6 TRCs. Detailed discussions on failure modes, deformation curves, and load versus mid-span displacement responses. Analysis on strain/stress properties of CST and shear-bending working mechanism of CFCST. Design methods proposed for combined shear-bending bearing capacity interaction relationships of CFCST.
Abstract Concrete-filled galvanized corrugated steel tube (CFCST), is an innovative composite member, which is proposed for improving the ductility and durability of conventional reinforced concrete (RC) structures. In practice, combined shear-bending loads often exist in a CFCST pier/column. It is necessary to investigate the shear-bending working mechanism of CFCST and access the shear-bending bearing capacity interaction relationships for a more reasonable design. Twenty-seven columns including 21 CFCSTs and 6 TRC specimens are therefore tested comparably. The main test variables are the loading types, shear span-to-depth ratios, tube forms, and the end/support conditions. The test results show that a satisfactory deformative coordination among the core concrete, reinforcements, and CST can be obtained, resulting in a significant improvement in shear-bending performances compared with conventional RC structures. With the discussion of failure modes, deformation curves, load versus mid-span displacement responses, and strain/stress properties of CST, the shear-bending working mechanism of CFCST is particularly addressed. Based on the test results, reasonable design methods for predicting the individual shear/bending strength and the combined shear-bending bearing capacity interaction relationships of CFCST are proposed eventually.
Experimental investigation on shear-bending performances of concrete-filled thin-walled corrugated steel tubes
Fang, Yong (author) / Yang, Hua (author) / Lu, Bo (author) / Wang, Yuyin (author) / Dong, Jucan (author)
Engineering Structures ; 274
2022-10-14
Article (Journal)
Electronic Resource
English
Experimental investigation and design of thin-walled concrete-filled steel tubes subject to bending
| Online Contents | 2013