The use of pile driving techniques in urban environments demands accurate methods to predict and mitigate the potential discomfort of residents of neighboring buildings. In this context, a numerical model to predict ground-borne noise and vibrations in buildings induced by pile driving is proposed in the present paper. The model is based on a sub-structuring approach, in which the entire propagation medium is considered, from the vibration source to the receiver.

The pile-ground domain is simulated by an equivalent linear FEM-PML approach formulated under axisymmetric conditions taking into account the pile-hammer interaction. The building simulation is performed using a 3D FEM approach, adequately adapted to include the soil-structure interaction, while the acoustic field induced by the structural vibration is analysed using a 3D MFS model. The levels of ground-borne noise and vibration inside the building resulting from pile driving are assessed through an application example, clearly showing the potential of the proposed methodology.

在城市环境中使用打桩技术需要精确的方法来预测和减轻邻近建筑物居民的潜在不适感。在此背景下，本文提出了一种数值模型来预测打桩引起的建筑物中的地面噪声和振动。该模型基于子结构方法，其中考虑了从振动源到接收器的整个传播介质。

考虑到桩锤相互作用，通过在轴对称条件下拟定的等效线性有限元-PML方法模拟桩-土区域。使用3D FEM方法进行建筑模拟，该方法足以适应土壤与结构之间的相互作用，而使用3D MFS模型分析由结构振动引起的声场。通过一个应用实例评估了打桩导致建筑物内部的地面噪声和振动水平，清楚地表明了所提出方法的潜力。