Effect of Building-Building Interactionn 'Free-Field' Ground Motion

摘要

We investigate the effect induced on free-field ground motion by the inter-action among buildings set in vibration by an earthquake. This is a refinement of aprevious model where the building interacted with the soil, but not among each oth-ers. The waves are propagated in a multi-layered 1-d model that includes soil and alayer for each floor of the structure. We implemented numerical models in Simulink,a toolbox of MatLab, that easily allows solving the differential equations of the case.The final model is a chain of SDOF oscillators, whose dynamic behaviour dependson mass, stiffness and damping. Comparing the results with the non-interacting case,there is a reduction of the mean and median of the ground motion enhancement andan increase of the dispersion.