Dynamic response characteristics and antiseismic performance of the structures which were constructed on the super-deep overburden layer are affected obviously by the seismic motion characteristics of the super-deep overburden layer foundation. In this paper, the seismic motion characteristics of horizontally stratified super-deep overburdenIn this paper, the seismic motion characteristics of horizontally stratified super-deep overburden based on the research results of on-site in situ tests and indoor material property tests, the horizontal shear layer method that can consider the nonlinear characteristics of dynamic soil deformation and the characteristics of seismic wave propagation in the soil is used to study the characteristics of ground motions of super-deep and thick overburden level of an earth-rock dam in China. The influence law of input ground motion characteristics and input ground motion position on seismic response analysis results of overburden ground is studied. Taking the uniform overburden layer model as an example, the coupling influence analysis of soil layer thickness and shear velocity on ground motion response are carried out, and the coupling influence law is proposed. The study shows that the seismic motion propagating characteristics of the earthquake in super-deep overburden layer is involved, inputting location of the seismic motion affects the results of ground seismic response greatly; super-deep overburden layer thickness and the soil shear wave velocity on influence law of ground motion characteristics have coupling. When the shear wave velocity of the soil layer is constant, the surface acceleration response has an inflection point with the change of the soil layer thickness; when the thickness of overburden is constant, the surface acceleration response also has an inflection point with the change of shear wave velocity of the soil layer; these inflexion values are influenced by both soil thickness and shear wave velocity.

中文翻译：

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超深覆盖层地震动的传递特性

超深覆盖层基础上结构的动力响应特性和抗震性能受到超深覆盖层基础地震运动特性的明显影响。本文对水平分层超深覆盖层的地震运动特征进行了研究。本文基于现场现场试验和室内材料性能试验，水平剪切的研究成果，对水平分层超深覆盖层的地震运动特征进行了研究。考虑土层动态变形的非线性特征和地震波在土壤中传播的特征的层法研究了我国土石坝超深厚覆盖层的地震动特征。研究了输入地震动特征和输入地震动位置对覆盖层地震响应分析结果的影响规律。以均匀覆盖层模型为例，进行了土层厚度和剪切速度对地震动响应的耦合影响分析，提出了耦合影响规律。研究表明，该地震涉及超深覆盖层的地震波传播特征，地震波输入位置对地震动响应结果有较大影响。超深覆盖层厚度与土的剪切波速度对地震动特性的影响规律具有耦合关系。当土层的剪切波速度恒定时，随着土层厚度的变化，表面加速度响应具有一个拐点。当覆盖层厚度恒定时，随着土层剪切波速度的变化，表面加速度响应也具有拐点。这些挠度值受土壤厚度和剪切波速度的影响。