Research About The Reinforcement Of Inclined Column-shaped Transfer Floor Of Framed Short-leg Shear Wall Structures

The research of short-leg shear wall outside mainly focus on the structural form and the design concept, not for the system of short-leg shear wall conversion. Our team has made a study of inclined column conversion of short-leg shear wall stress characteristics and the seismic performance in depth. Optimum axial compression ratio, inclined column angle, width thickness ratio and span depth ratio of the structure form have been summarized. Based on the foundation of our team’s research, this paper changes the reinforcement of each component in the structure to do nonlinear finite element analysis on the short-leg shear wall inclined column transfer structure. We measure the seismic performance of short-leg shear wall inclined column transfer structure under seismic action with the hysteretic curve, skeleton curve, displacement ductility, stiffness degradation curves and failure modes, and then summary the variation of stress mechanism and the seismic performance of each component with different reinforcement ratio.In 0.1, 0.3 and 0.5 of the three axial compression ratio, this paper analyze the influence of reinforcement of short-leg shear wall inclined column transfer structure stress characteristics and seismic performance using the concrete damaged plasticity model and PQ-Fiber2.0-Usteel-02 model of reinforcing bars in ABAQUS software. The specific method is changing the reinforcement ratio of concealed column, frame column and transfer beam to analyze the reinforcement ratio changes impact on the overall structural performance. This is also a verification of the previous research results of our team.Summarizing the results of analysis in this paper, we get the following suggestions about structure design. When the axial compression ratio of the short-leg shear wall is below 0.3, concealed column longitudinal reinforcement ratio should be 1% ~ 3%, column longitudinal reinforcement ratio should be 2% ~ 3%, the upper part of the transfer beam reinforcement ratio should be 0.8% ~ 1.2%, and the lower part of the transfer beam reinforcement ratio should be 0.4% ~ 0.6%. When the axial compression ratio of the short-leg shear wall is between 0.3 and 0.5, concealed column longitudinal reinforcement ratio should be 2% ~ 3%, column longitudinal reinforcement ratio should be 3% ~ 4%, the upper part of the transfer beam reinforcement ratio should be 1.0% ~ 1.4%, and the lower part of the transfer beam reinforcement ratio should be 0.5% ~ 0.7%.