Abstract
This paper uses time-history analysis method to consider the effect of 3 kinds of seismic waves by means of finite element software Ansys, analyse earthquake response of 5 kinds of models, compares effect of structural performance of frame structures with different types of stairs. The results show that different types of stairs diversely affects period, stiffness, mode of vibration, mechanical performance, etc, after consideration of stairs in calculating. Although types of stairs different, it shows mainly that stairs make much larger contribution for stiffness parallelled to stairs, less contribution for stiffness perpendicular to stairs, each layer just affects stiffness this layer. It is not simple to consider different types of stairs as general supports.
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