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Transmitting Characteristics of Seismic Motion in Super-Deep Overburden Layer Ground

机译：超深层覆盖层地面抗震运动的传递特性

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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.
机译：通过超深层覆盖层基础的地震运动特性，在超深层覆盖层构建的结构的动态响应特性和抗裂肿性能受到显而易见的影响。本文采用了水平分层超深环丁宁本文的地震运动特性，基于现场研究结果的水平分层超深载覆载的地震运动特性，水平剪切层方法可以考虑动态土壤变形的非线性特征和土壤中地震波传播的特征研究了中国地球岩坝超深层覆盖水平的地面运动的特点。研究了输入地面运动特性的影响规律和覆盖覆盖地震响应分析结果的地震响应分析结果。以均匀的覆盖层模型为例，进行了土壤层厚度和地面运动响应上的剪切速度的耦合影响分析，提出了耦合影响法。该研究表明，涉及超深层覆盖层中地震的地震运动传播特性，地震运动的输入位置大大影响了地面响应的结果;超强覆盖层厚度和土壤剪切波速度对地面运动特性的影响规律具有耦合。当土壤层的剪切波速度是恒定的时，表面加速度响应具有拐点，具有变化的土层厚度;当覆盖层的厚度是恒定的时，表面加速度响应还具有拐点，其具有土壤层的剪切波速度的变化;这些Inflxion值受土壤厚度和剪切波速度的影响。

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