摘要
以35个工程场地地震安全性评价结果为样本,统计分析了三水准超越概率水平地震动峰值加速度(PGA)关系。结果表明:50年超越概率63%和2%地震动峰值加速度与50年超越概率10%地震动峰值加速度的比值,在不同场地类别条件下变化不显著。
Based on the results obtained from seismic safety evaluation of 35 engineerng sites, the relationship between 3-level EP and horizontal seismic peak ground acceleration （PGA） is statistically analyzed. The result indicates that, the ratio of PGA corresponding to EP above 63% after 50 years to PGA corresponding to EP above 10 % after 50 years and the ratio of PGA corresponding to EP above 2 % after 50 years to PGA corresponding to EP above 10 % after 50 years does not obviously change in different site situations.
出处
《华北地震科学》
2009年第2期39-41,共3页
North China Earthquake Sciences
关键词
超越概率
PGA
加速度
Exceeding probability（EP）
Peak ground acceleration（PGA）
relationship
