Effect of Building-Building Interaction on “Free-Field” Ground Motion

  • Marco Mucciarelli
  • Rocco Ditommaso
  • Maria Rosaria Gallipoli
  • Felice Ponzo
Conference paper
Part of the NATO Science for Peace and Security Series C: Environmental Security book series (NAPSC)

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.

Keywords

Free-Field City-soil interaction Numerical modeling of seismic wavesKeywordGroup>  

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References

  1. 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
  2. Gallipoli, M. R., M. Mucciarelli, F. Ponzo, M. Dolce, E. D'alema, M. Maistrello (2006) Buildings as a seismic source: analysis of a release test at Bagnoli, Italy, Bull. Seismol. Soc. am., 96, 2457–2464CrossRefGoogle Scholar
  3. Şafak, E. (1998) New approach to analyzing soil-building systems, Soil Dyn. Earthq. Eng., 17, 509–517CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Marco Mucciarelli
    • 1
  • Rocco Ditommaso
    • 1
  • Maria Rosaria Gallipoli
    • 1
  • Felice Ponzo
    • 1
  1. 1.DiSGGUniversità della BasilicataPotenzaItaly

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