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Amplification Effect of Peak Ground Motion Acceleration in ClassⅡ and Ⅲ Sites over Shandong Provincet
作者姓名:Diao Ting  Chen Shijun  Jiang Zaofeng
基金项目:supported by Shandong Institute of Earthquake Engineering(Natural Science Foundation of Shandong Province(Y2002E01); Shandong Science and Technology Development Project(2010GSF10806),China
摘    要:In this paper, the amplification factor (ks) of peek ground motion with different exceedance probability in class Ⅱ and Ⅲ sites over Shandong Province was estimated by analyzing the seismic response data of soil layers collected from 358 boreholes of classⅡ sites and 140 boreholes of class Ⅲ site. From the results, one can conclude that: (1) The scatter plot of ks generally obeys a normal distribution; (2) ks decreases with the increase of the strength of input ground motion, which is more apparent in Class Ⅲ site than in class Ⅱ site; (3) for classⅡ site, with the increase of depth of the bedrock interface where ground motion inputs, ks increases gradually until to a stable value when the depth reaches up to approximately 20 meters or larger. Yet, for class Ⅲ site, ks is insensitive to the depth; (4) the average of ks for classⅡ site is 1.47, slightly larger than that used in the Seismic Ground Motion Parameters Zonation Map of China (GB 18306-2001). Also, ks in classⅡ and Ⅲ sites at different levels of peak ground acceleration over Shandong Province is preliminarily discussed in the paper.

关 键 词:Seismic  ground  motion  Peak  ground  acceleration  Site  condition  Exceedance  probability  amplification  factor

Amplification Effect of Peak Ground Motion Acceleration in ClassⅡ and Ⅲ Sites over Shandong Province
Diao Ting,Chen Shijun,Jiang Zaofeng.Amplification Effect of Peak Ground Motion Acceleration in ClassⅡ and Ⅲ Sites over Shandong Province[J].Earthquake Research in China,2011,25(4):498-506.
Authors:Diao Ting  Chen Shijun and Jiang Zaofeng
Institution:Diao Ting,Chen Shijun,and Jiang Zaofeng 1)Shandong Institute of Earthquake Engineering,Jinan 250021,China
Abstract:
Keywords:Seismic ground motion  Peak ground acceleration  Site condition  Exceedance probability  amplification factor  
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