A numerical investigation on the wind-induced response of a high-rise building considering the soil-structure interaction

Abstract

In the present work, a numerical investigation is carried out to evaluate the wind-induced response of a standard tall building model resting on a deformable soil. The numerical model is developed in this work from a partitioned coupling scheme, in which the physical media involved are solved sequentially, and may present independent discretization and solution methods. The problem is spatially discretized using eight-node hexahedral isoparametric elements with underintegration techniques. The fundamental flow equations are kinematically described using an arbitrary lagrangian-eulerian (ALE) formulation and numerically solved using the explicit two-step Taylor-Galerkin scheme. Structure and soil are considered as deformable elastoplastic media, using a corotational approach to deal with physical and geometric nonlinearities. A three-dimensional contact formulation based on the penalty method is used to perform the load transfer between soil and foundation. A hybrid parallelization model based on CUDA-OpenMP techniques is employed to improve the processing performance. Numerical results obtained from aeroelastic analyses are compared with numerical and wind tunnel measurements reported by other authors. Results demonstrated that the soil-structure interaction affected the building response to the wind action and the aeroelastic instability due to vortex shedding can be considerably reduced with the soil presence.