Study on records of the Wenchuan MW 8.0 strong earthquake in 2008

There are a large number of acceleration records obtained in the near fault strong motion of Wenchuan earthquake in 2008, which greatly enriched the database of strong motion. By the classification analysis to Sichuan records and comparison with the domestic and international earthquakes analysis, we draw the following conclusions: 1) whether parallel or perpendicular direction, the peaks of soil are greater than rock's. With the fault distance increasing, the gap between the two lines minishes gradually.2) With the increase in the number of peaks obtained, the correlation coefficient of GPGA or LGPA is generally increasing.3) The mean of R is respectively 8.10(rock), 10.31(soil), 10.10(total) in the usual range.4). The average of λ is respectively 0.5862(rock), 0.5707(soil), 0.5722(total), they are between 1/2 and 2/3. The difference is not large.