Seismic History Analysis Of Asymmetrical
Adjacent Buildings With Soil-structure
Interaction Consideration
Author(s)
M. E. Uz & M. N. S. Hadi
Abstract
The seismic response history analysis of multi-storey asymmetric adjacent
buildings with soil-structure interaction (SSI) during impact is investigated in
this study. The coupled multi-degree of freedom modal differential equations of
motion for the two way asymmetric shear buildings are derived and solved using
a step by step solution by the fourth-order Runge-Kutta method with impact and
without impact. The SSI forces are modelled in the form of the frequencyindependent
soil springs and dashpots. A numerical example of two-way
asymmetric four-storey adjacent buildings under the variation of the important
SSI system parameters such as the large and small SSI effects is investigated
under the excitation of the 1940 El Centro Earthquake. This study shows that the
lateral torsion response of both buildings is affected when impact takes place
with the adjacent buildings. The first three modal response histories of each
building are significantly reduced due to the effect of the small SSI. Further, it is
also observed that the roof twist of the lighter buildings is decreased for the large
SSI effect compared to the small SSI effect. Finally, in increased eccentricities,
the impact response of buildings is significantly severe.
Keywords: earthquake engineering, impact effects, soil-structure interaction,
asymmetry.
Keywords
earthquake engineering, impact effects, soil-structure interaction,
asymmetry
Related Book
Other papers in this volume
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