Distribution Models of the Fracture Resistance of Steel Strands Corroded by Chloride |
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| Authors: | LI Fu min YUAN Ying shu and ZHANG Jian qing |
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| Institution: | State Key Laboratory for Geomechanics and Deep Undergound Engineering; School of Architecture and Civil Engineering, China University of Mining and Technology, Xuzhou 221008, Jiangsu, P. R. China;State Key Laboratory for Geomechanics and Deep Undergound Engineering; School of Architecture and Civil Engineering, China University of Mining and Technology, Xuzhou 221008, Jiangsu, P. R. China;State Key Laboratory for Geomechanics and Deep Undergound Engineering; School of Architecture and Civil Engineering, China University of Mining and Technology, Xuzhou 221008, Jiangsu, P. R. China |
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| Abstract: | Mises strain from plastic theory was put forward to be the fracture criterion of corroded steel strands. By tension tests of 14 corroded steel strands with chloride, 46 breaking wires were obtained with the mean tension stress and the geometric configuration of the pit. Based on the above, the fracture resistance of each breaking wire was simulated by the finite element software ANSYS. And the simulation results were addressed to analyse the characteristics of fracture resistance with SPSS software. It was found that at the significance level of 0.05, both normal distribution and logarithmic normal distribution were not refused for the fracture resistance distribution. Hence, the distribution models (percentage distribution function) were obtained under the two distribution modes. |
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| Keywords: | prestressed concrete durability chloride environment corrosion of steel strands fracture resistance distribution models |
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