| Concrete filled steel tube(CFST) in high-rise buildings has been more often used, slitted shear wall in high-rise buildings also has applications. Based on this, a kind of new shear wall –slitted round steel tube concrete shear wall has been brought forward in this paper. It make the combination of the two structural forms which are steel tube, slitted shear wall, and it reflects the advantages of different structural forms of seismic, and formed two seismic line. In-depth analysis of the experimental data and phenomena and ANSYS numerical simulation of the seismic performance of this new type of composite shear wall based on study.Firstly, design two shear wall test specimens, respectively for ordinary concrete slitted shear wall and concrete filled round steel tube slitted shear wall, and make the study of low reversed cyclic loading test. According to the experiment data and phenomenon got each of specimen load-carrying capacity, ductility, stiffness degradation rule, skeleton curves, hysteretic performance and failure characteristics, and established the mathematical model of restoring force skeleton curve, the seismic mechanism was revealed.Secondly, use of the general finite element software ANSYS to finite element modeling analysis of shear wall test specimen, the numerical results(including the load, displacement and skeleton curve)were compared with experimental results, the results are in good agreement, indicating reasonable finite element numerical simulation of this form of the shear wall structure is feasible.Finally, use of software ANSYS to establish nine different types of shear wall models, analyzed the different number of axial compression ratio, concrete strength, vertical seam, round steel tube concrete column in this kind of influence rule of seismic performance of shear wall, for the further analysis of this kind of structure form of shear wall provides some reference. |
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