Effect of Building-Building Interaction on “Free-Field” Ground Motion
We investigate the effect induced on free-field ground motion by the interaction among buildings set in vibration by an earthquake. This is a refinement of a previous model where the building interacted with the soil, but not among each others. The waves are propagated in a multi-layered 1-d model that includes soil and a layer 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 depends on 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 and an increase of the dispersion.
KeywordsFree-Field City-soil interaction Numerical modeling of seismic wavesKeywordGroup>
Unable to display preview. Download preview PDF.
- Ditommaso, R., M. R. Gallipoli, M. Mucciarelli, F. C. Ponzo (2007) Effect of vibrating building on “free field” ground motion: from the Bagnoli experiment to many-buildings simulation, Proc. 4th Int. Conf. Earthq. Geotech. Eng., CD-ROM edition, Paper No. 1388. Springer, ISBN 978-1-4020-5893-6Google Scholar