| Due to its good performance in architectural structures, the concrete filled steel tube (CFST) is widely used currently. But for the concrete filled steel tube structure research, most researchers focused on components and joints of the concrete filled steel tube structure for some restrictions, so the overall performance of structure researched is relatively less. In addition, there are limits for the seismic performance research. Most of the researches are mainly in the hysteretic curves under cyclic lateral load. And the shaking table test research is less, therefore, for the concrete-filled steel tubular frame structures research still needs a lot of work to do. In this paper, the following aspects of the concrete-filled steel tubular frame structures to study.In this paper, for the elastic-plastic static analysis, the performance of three designed CFST frames have been studied under the different lateral loading modes.Secondly, to verify if our simulation method is reliable, a structure from a seismic shaking table test has been simulated, and then the time-history analysis has completed under different working conditions. The results showed that the numerical simulation results agreed well with the test results. And it is verified that based on the nonlinear fiber beam-column element methods in the OpenSees platform can be well applied to the dynamic analysis of the concrete-filled steel tubular frame. Then, used the same method, the influence of different parameters has been studied, which are mainly the damping ratio and the site classification. In this paper, the engineering used value of 0.02, 0.03, 0.04 and 0.05 have been chosen as research objects. Through the analysis of damping ratio research, it indicates that there is some effect for dynamic characteristic of the concrete-filled steel tubular frame, and the influence of damping ratio in the elastic stage is greater than the plastic stage. Through the analysis of the far-field ground motions research, the seismic response of concrete filled steel tubular frame under the different ground motions is different, but showed that the earthquake response decreased with increasing of shear wave velocity certain regularity. And the large discreteness of the earthquake response means that there must be other factors influence the results.Finally, a comparison investigation of calculated results showed that the inverted triangle lateral force distribution calculation results more security to calculate the structures than uniform lateral force distribution after incremental dynamic analysis (IDA) and elastic-plastic static analysis analysis.
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