Abstract

Shock response analysis of the soil-structure systems induced by near-fault pulses is investigated. Vibration transmissibility of the soil-structure systems is evaluated by Shock Response Spectra (SRS). Medium-to-high rise buildings with different aspect ratios located on different soil types as well as different foundations with respect to vertical load bearing safety factors are studied. Two types of mathematical near-fault pulses, i.e., forward directivity and fling step, with different pulse periods as well as pulse amplitudes are selected as incident ground shock. Linear versus nonlinear Soil-Structure Interaction (SSI) condition are considered alternatively and the corresponding results are compared. The results show that nonlinear SSI is likely to amplify the acceleration responses when subjected to long-period incident pulses with normalized period exceeding a threshold. It is also shown that this threshold correlates with soil type, so that increased shear-wave velocity of the underlying soil makes the threshold period decrease.

Keywords:

Ground shock, rocking isolation, soil-structure interaction, shock response spectrum,

References

Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.