A new simulation-based site amplification model for shallow sites with thickness less than 30 m in Korea is developed. The site amplification model consists of linear and nonlinear components that are developed from one-dimensional linear and nonlinear site response analyses. A suite of measured shear wave velocity profiles is used to develop corresponding randomized profiles. A V_S30 scaled linear amplification model and a model dependent on both V_S30 and site period are developed. The proposed linear models compare well with the amplification equations developed for the western United States (WUS) at short periods but show a distinct curved bump between 0.1 and 0.5 s that corresponds to the range of site natural periods of shallow sites. The response at periods longer than 0.5 s is demonstrated to be lower than those of the WUS models. The functional form widely used in both WUS and central and eastern North America (CENA), for the nonlinear component of the site amplification model, is employed in this study. The slope of the proposed nonlinear component with respect to the input motion intensity is demonstrated to be higher than those of both the WUS and CENA models, particularly for soft sites with V_S30 < 300 m/s and at periods shorter than 0.2 s. The nonlinear component deviates from the models for generic sites even at low ground motion intensities. The comparisons highlight the uniqueness of the amplification characteristics of shallow sites that a generic site amplification model is unable to capture.

针对韩国厚度小于30 m的浅层场地，开发了一种基于模拟的新场地放大模型。站点放大模型由线性和非线性组件组成，这些组件是根据一维线性和非线性站点响应分析得出的。一套测量的剪切波速度剖面用于建立相应的随机剖面。甲V_小号30缩放取决于线性放大模型和一个模型V_小号30并确定了站点期。所提出的线性模型与在短期内为美国西部（WUS）开发的放大方程进行了很好的比较，但是显示了在0.1到0.5 s之间的明显的弯曲隆起，与浅站点的站点自然周期范围相对应。超过0.5 s的周期响应比WUS模型的响应慢。在这项研究中，采用了在WUS和北美中部和东部（CENA）中广泛使用的功能形式，作为位点放大模型的非线性成分。事实证明，所提出的非线性分量相对于输入运动强度的斜率高于WUS和CENA模型的斜率，特别是对于V _{S 30的}软站点 <300 m / s，且周期短于0.2 s。即使在地面运动强度较低的情况下，非线性分量也偏离了通用站点的模型。比较突出了通用位点扩增模型无法捕获的浅位点扩增特征的独特性。