Abstract

There are several ways of setting seismic impact on bedrock for calculating the impact on the free field. In the paper, two ways of setting the initial seismic impact on bedrock are analyzed: artificial and synthetic accelerograms. For assessing the effect of the soil profile in transferring seismic signals from bedrock to the free field, four seismogeological models were used. Linear and nonlinear (equivalent-linear approximation) behavior of soil profiles were studied. Summing all results of calculations, we conclude that there are no significant differences in expected seismic impact on the free-surface depending on how the input is set at bedrock. Systematically larger values when synthetic method is used is not more than 10%, which is not evaluated as being significant.

中文翻译：

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自由场中的地震影响（响应谱和加速度图）

摘要

有几种方法可以设置对基岩的地震影响，以计算对自由场的影响。在本文中，分析了设置初始地震对基岩的影响的两种方法：人工和合成加速度图。为了评估土壤剖面在将地震信号从基岩传递到自由场中的作用，使用了四个地震地质模型。研究了土壤剖面的线性和非线性（等效线性近似）行为。总结所有计算结果，我们得出结论，取决于输入如何设置在基岩上，预期地震对自由表面的影响没有显着差异。当使用合成方法时，系统上较大的值不超过10％，这被认为没有意义。