In most geotechnical simulations, the initial condition of the soil is assumed to be homogenous in terms of the void ratio and stress distribution. Thus, the influences of the installation process are not considered. In the study presented in this paper, the effects of the installation process by vibratory and impact driving means on the cyclic deformation behaviour of monopile foundations are investigated. The development and validation of different numerical models for the simulation of cyclic horizontal loading are presented. In the first model, the installation effects are taken into account in the form of the initial conditions of soil, which are based on a separate simulation for pile penetration. In the second model, a simplified approach uses some simple modifications of the initial value of soil in a certain zone around the pile shaft. With the results of small-scale model tests, the numerical approaches are validated. It is observed that the piles with impact and vibratory driving have significantly different deformation behaviours under cyclic loading.

在大多数岩土模拟中，假设土壤的初始条件在孔隙比和应力分布方面是均匀的。因此，不考虑安装过程的影响。在本文提出的研究中，研究了振动和冲击驱动方式的安装过程对单桩基础循环变形行为的影响。介绍了用于模拟循环水平载荷的不同数值模型的开发和验证。在第一个模型中，以土壤初始条件的形式考虑了安装效果，该初始条件基于单独的桩穿透模拟。在第二个模型中，一种简化的方法对桩轴周围特定区域的土壤初始值进行了一些简单的修改。小规模模型试验的结果验证了数值方法。观察到冲击和振动驱动的桩在循环载荷下具有显着不同的变形行为。