Nonlinear seismic behaviour of wall‐frame dual systems accounting for soil–structure interaction

摘要: SUMMARY The aim of this paper is to study the effects soil–structure interaction on seismic response coupled wall-frame structures pile foundations designed according modern provisions. The analysis methodology based substructure method recalled focusing modelling group foundations. nonlinear inertial performed in time domain by using a finite element model superstructure. Suitable lumped parameter models are implemented reproduce frequency-dependent compliance soil-foundation systems. evaluated considering realistic case consisting 6-storey 4-bay structure founded piles. Different two-layered soil deposits investigated varying layer thicknesses and properties. Artificial earthquakes employed simulate earthquake input. Comparisons results obtained compliant base fixed presented addressing displacements, shears, ductility demand. evolution dissipative mechanisms relevant redistribution shear between wall frame with increasing intensity. Effects also shown pointing out importance both kinematic interaction. Finally, some real near-fault records studied. Copyright © 2012 John Wiley & Sons, Ltd.