To make the comparative analysis of the acceleration spectrums of 5. 12 Wenchuan Earthquake and 3. 11 Great East Japan Earthquake and make the seismic response analysis of structures

132 horizontal acceleration records of Wenchuan Earthquake and 404 horizontal acceleration records of the Great East Japan Earthquake were selected. The site type is Ⅱ. The standard acceleration response spectrums and the fitting response spectrums of the two earthquakes were got by statistical analysis. Then the fitting response spectrums were used as the demand spectrums to do the Pushover analysis on a 6-story frame structure and a 20-story frame structure. The seismic response differences between the two structures under the two selected earthquakes were analyzed. The results show that compared to the Wenchuan Earthquake

the Great East Japan Earthquake presents long-period characteristics. Also

more obvious differences between the two earthquakes are shown on high-rise frame structures. The Great East Japan Earthquake has greater effects on long-period structures.