| The studies on Steel Reinforced Concrete (hereafter as SRC) structure has widely undertaken in China since the beginning of 1980's. Deriving benefits from combining the structural steel and reinforced concrete, the composite structures possess large load-carrying capacity and stiffness owing to composite action. Further, the surrounding concrete can serve for fire protection. Therefore, SRC structures built with structural steel encased in reinforced concrete are widely used in high-rise buildings and other systems requiring a large lateral-load resistance and considerable strong axial load capacity. Unfortunately, the study on SRC structure is not enough, which restricts significantly the application of this composite structure, so this thesis focuses on the property of SRC structure including bond-slip relationship between steel and concrete, seismic property of SRC walls, numerical simulation of SRC walls.In this thesis, a new type bond-slip experiment was designed which can realize real bond failure between steel and concrete. 18 specimens with different parameters were tested under monotonic pullout and cyclic loading. These parameters are concrete strength, steel volume ratio of stirrup, bond length respectively. In addition, in order to analyze bond effect at different positions of structural steel, three partially bond specimens were designed, in these three specimens, flange inside and web plate of steel skeleton were isolated from concrete by wrapping plastic membrane and consistent lubricant on the structural steel.According to the experiment results of these specimens, numerical constitution model of bond-slip of steel reinforced concrete under both monotonic loading and cyclic loading were concluded. The numerical simulation derived from these mathematical models coincided with the experiment results well.16 specimens of steel reinforced concrete (SRC) walls with different parameters such as height-width ratio, axial compression ratio, concrete strength, and steel volume ratio of stirrups respectively were tested. And then, the effects of these parameters on SRC walls were evaluated. In addition, a new type wall which steel was assembled in the center of SRC wall section was tested. From the experiment results, this scheme can effectively improve seismic behavior of SRC wall.Then, the seismic behavior of SRC wall was simulated by numerical analysis program CANNY. Two specimens with different height-width ratio were simulated, and analysis results were compared with experiment results.In order to verify the proposed analytical model of bond-slip under monotonic loading, a SRC walls were tested under monotonic loading, and was analyzed by 3D nonlinear finite element method. Two different simulation models were used to analyze the SRC wall. In one of the two models, bond-slip property between structural steel and concrete was ignored so that two materials kept perfect-bond. In the other model, bond-slip relationship proposed by this article was considered.According to the comparison with experiment, the simulation model considering bond-slip relationship agreed with the measured response better than the model assuming perfect bond. So as a conclusion, simulation model considering bond-slip is more accurate than traditional perfect bond simulation model. It is essential to study the bond-slip relationship for grasping the mechanical property of SRC wall furthermore.In Chinese code for design of concrete structures, axial compression ratio is an important parameter, which is used in design of some vertical components such as column and wall. Unfortunately, there is little research about axial compression ratio and its limited value of SRC walls until now. So, researches about axial compression ratio and limited value of SRC wall were taken in this thesis by a method of combining experiment and numerical simulation.
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