Study On Seismic Behavior Of A Multi-cavity Composite Shear Wall

With the widely application of high-rise buildings at home and abroad,the vertical load and earthquake action of shear walls are becoming larger and larger.In view of the shortcomings of the traditional shear walls used in high-rise buildings,a multi-cavity double steel plate-infilled concrete composite shear wall combines the advantages of steel and concrete material properties.In this paper,the seismic performance of this shear wall is studied by means of data analysis,numerical simulation and theoretical analysis.The specific works are as follows:(1)Low cyclic tests of multi-cavity steel plate-infilled concrete composite shear wall was simulated using ABAQUS software.The numerical results were compared with the test ones and they agreed well with each other.Then,the validity of the modeling process and the selection of parameters were verified.The conclusion that the mechanical properties of the multi-cavity double steel plate-infilled concrete composite shear wall could be studied by numerical method has been put forward.(2)Shear wall models with three,four,and five cavities were designed,and the parametric analysis on the seismic behavior was carried out under monotonic and cyclic loading.The strength grade,axial compression ratio,shear span ratio,steel plate strength,wall thickness,steel plate thickness and number of cavities,and connection measures between steel plate and concrete were selected as the impact parameters.The influence of these changing parameters on the on bearing,deformation and hysteretic energy dissipation capacity were summarized systematically.(3)Twenty different models were established and the numerical simulation of axial compression capacity was carried out.Comparing the simulation results with the results of the standard formula,it was found that the deviation is very small.Then,the standard formula was verified.