Experimental Study And Fem Analysis On Seismic Performance Of The Staircase

China is one of the countries which suffer most seriously from earthquake disaster. Over the years the earthquakes occur more and more frequently, the harm is also growing. Direct influence of the earthquake is to make the building damage, leading to the loss of life. In view of this situation, we must solve the problem of personnel escape when the earthquake hitting. As the secure channel, stair is very important. In this paper, we study the common plate-stairs in frame structure seismic performance by the shaking table experiment and finite element analysis.In order to make a 1/6 stair model with the similarity principle, we choose the appropriate materials and seismic wave which is conform to the requirements. After the seismic loading, we research the status of the destruction of the structure model and dynamic response, analysis of the stair in the earthquake force of the components. At last, using ABAQUS software to simulate the prototype structure finite element and time history analysis. With the comparisons between experiment and the finite element analysis, we can in-depth analyze the stair components of stress distribution, and put forward the improvement measures of stair, use finite element software to prove the feasibility and rationality of improvement measures.As a result of the study, as the first line of defense in earthquake, stair plate makes a big contribution to the stiffness of stair case, but it can’t play the role in evacuating crowed people. In case of the stair destruction firstly in earthquake, it should be connected slick with the whole structure or added eliminating measure.