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| Shearing capacity of fiber reinforced joints with special-shaped columns |
| Key Laboratory of Coast Civil Structure Safety of Ministry of Education, School of Civil Engineering, Tianjin University, Tianjin 300072, China) |
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Abstract According to the pseudo-static test of 52 joints with special-shaped columns, the shearing capacity formula which was from the actual Technical Specification for Concrete Structures with Special-shaped Columns was analyzed. The analysis results show that the formula in Specification is safe for the joints design of special-shaped column with high safety coefficient, but with low shear compression ratio. According to the test of 12 joints specimens with special-shaped columns with fiber reinforcement in core area, the shearing capacity formula was proposed. The formula is in simple form and is consistent with the formula in actual Specification. Calculation results indicate that the ratios of experimental value to calculated value are all higher than 1, which illuminates that the formula is safe for the design of joints with specialshaped column with slight high reliability. With fiber reinforcement, the shearing capacity of joints can be increased, and the quantity of stirrups can be decreased without the problems of steel bars congestion and joints weakness.
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2011, Vol. 32 
