Fractal Analysis on Bond-Slip Behavior between Steel Shape and Concrete in SRC on Axial Pull-Out Test

Abstract

Based on the experimental study of pull-out specimens on bond-slip behaviors between shaped steel and concrete in SRC (Steel Reinforced Concrete Structures), the graphic of the whole damage process are obtained. The crack propagation of concrete is fractal analyzed to calculate the fractal dimension. Relationships between fractal dimension and bond-slip behaviors of SRC are discussed. The main factors impact the bond-slip behaviors are studied to established the relationship with fractal dimension. Linear dependence relation of fractal dimension and bond-slip behaviors and the impact factors is discovered. Statistics formula is established to describe the relation of fractal dimension and ultimate bond strengths. All these may contribute to the further analysis of bond-slip performance and fractal behaviors in SRC composite structures.