-Based on the experimental data, a stress variation model of the bond stress-slip relationship between steel bar and concrete is established. The characteristic of the model is that the boundary conditions are satisfi...-Based on the experimental data, a stress variation model of the bond stress-slip relationship between steel bar and concrete is established. The characteristic of the model is that the boundary conditions are satisfied very well; the effects of the material properties, the concrete cover, the crack spacing and the distance from the cracked cross section are considered. Good agreement between measured and calculated bond stress-slip relationship is found. This model is useful for the study of the stiffness, deformation and crack width of reinforced concrete members, and for the nonlinear analysis of reinforced concrete structures by the finite element method.展开更多
In order to investigate the tensile bond anchorage properties of Australian 500N steel bars in concrete,111 pullout tests were conducted.The precise bond slip values have been gained by using the laser displacement se...In order to investigate the tensile bond anchorage properties of Australian 500N steel bars in concrete,111 pullout tests were conducted.The precise bond slip values have been gained by using the laser displacement sensor with high resolution,including the complete bond-slip curves.How the main anchorage factors such as concrete strength,bar diameter(8,10,12,16,20,24,28,32 and 36 mm) the concrete covered,embedded length and transverse reinforcement influencing the bond anchorage properties was studied under tensile condition.The process of the tensile force-slip failure for Australian 500N reinforcing steel can be divided into five stages:elastic stage,local slip stage,slip in ascent stage,slip in descent stage and remnant stage.The formula for calculating the tensile bond strength of Australian 500N reinforcing bar in concrete was proposed according to the test results,including the consistent model for tensile bond-slip relationship.展开更多
文摘-Based on the experimental data, a stress variation model of the bond stress-slip relationship between steel bar and concrete is established. The characteristic of the model is that the boundary conditions are satisfied very well; the effects of the material properties, the concrete cover, the crack spacing and the distance from the cracked cross section are considered. Good agreement between measured and calculated bond stress-slip relationship is found. This model is useful for the study of the stiffness, deformation and crack width of reinforced concrete members, and for the nonlinear analysis of reinforced concrete structures by the finite element method.
基金Project(DP0988940) supported by Australian Research Council Discovery Grant Program Project(2011M500930) supported by Postdoctoral Science Foundation of China+1 种基金Project(11KJB560003) supported by College Natural Science Foundation of Jiangsu Province,ChinaProject(163050072) supported by the Talent Introduction Foundation of Nanjing Forestry University,China
文摘In order to investigate the tensile bond anchorage properties of Australian 500N steel bars in concrete,111 pullout tests were conducted.The precise bond slip values have been gained by using the laser displacement sensor with high resolution,including the complete bond-slip curves.How the main anchorage factors such as concrete strength,bar diameter(8,10,12,16,20,24,28,32 and 36 mm) the concrete covered,embedded length and transverse reinforcement influencing the bond anchorage properties was studied under tensile condition.The process of the tensile force-slip failure for Australian 500N reinforcing steel can be divided into five stages:elastic stage,local slip stage,slip in ascent stage,slip in descent stage and remnant stage.The formula for calculating the tensile bond strength of Australian 500N reinforcing bar in concrete was proposed according to the test results,including the consistent model for tensile bond-slip relationship.
