温州深软场地剪切波速实测误差及其对PGA影响研究

该研究在温州两个深软土层场地上完成了剪切波速测试误差专项实验，统计拟合了误差分布规律并研究了其对PGA的影响，得到结论:每米深度上的实测误差基本符合标准正态分布，温州地区深软场地的测试误差与我国其他几个地区覆盖土层较浅场地上的每米实测误差程度基本相同；两个场地上各深度的误差标准差大致相同，约为16%；实测误差对PGA影响明显，误差取1倍标准差时PGA的变化程度可能达到30%，取2倍标准差时可能高达45%；PGA的变化程度受输入地震动的频率特性制约，长周期频率成分对深软场地计算结果的影响明显。

Research on test error of in-situ Shear-wave velocity and its related impact on PGA in Wenzhou Prefecture

This paper carried out a special experiment of test error of in-situ shear-wave velocity at two deep-soft sites in Wenzhou. By finishing the research on statistical rule of test error and its related effect on PGA, the conclusions are as followed. Per-meter test error obeys the normal distribution and remains at the similar deviation level which compares to some other shallow soil sites. The standard deviation(SD) of per-metertest error is about 16%.Test error has significate impact on PGA:1-time SD may shift 30% of PGA. When that turns to twice SD, the PGA variation would even high up to 45%. The change of PGA is highly related to the frequency band of the input ground motion. When considering the test error, long-period component has great impact on PGA of these two deep-soft sites.