A numerical validation of a 3D hybrid meshless methodology for dynamic soil-structure interaction problems

In this paper, a hybrid meshless methodology for the simulation of dynamic soil-structure interaction problems is verified in a three-dimensional context. The method aims to predict the ground-borne noise and vibration levels to which a new building to be constructed close to a ground vibration source will be subjected. The method is based on three steps: incident wave field evaluation in a set of collocation points, incident wave field virtualization by a set of virtual forces and structure response determination applying the set of virtual forces to a coupled soil-structure model. The proposed meshless method is verified in the context of the problem of one and four shallows foundations embedded in a homogeneous half-space subjected to harmonic loading using synthetic data for the incident wave field in the ground surface. Discussions on the practical deployment of the method are also included.