Article
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Preserved in Portico This version is not peer-reviewed
Effect of Soil Anisotropy on Ground Motion Characteristics
Version 1
: Received: 12 October 2023 / Approved: 12 October 2023 / Online: 13 October 2023 (08:31:13 CEST)
A peer-reviewed article of this Preprint also exists.
Xie, Y.; Cao, Z.; Yu, J. Effect of Soil Anisotropy on Ground Motion Characteristics. Buildings 2023, 13, 3017. Xie, Y.; Cao, Z.; Yu, J. Effect of Soil Anisotropy on Ground Motion Characteristics. Buildings 2023, 13, 3017.
Abstract
Soil transverse isotropy results in different stiffness characteristics in the horizontal and vertical directions. However, the effect is usually neglected in the seismic motion analysis. In this study, an equivalent linear anisotropic soil model was established based on the finite element method and investigated the impact of anisotropic parameters on ground motion at the site under various seismic wave inputs. It is found that the anisotropic parameters have a more significant effect for the seismic waves with the dominant frequency closer to the fundamental frequency of the site. As an example, the soil dynamic parameters in Shanghai Yangshan Port were calibrated by a series of bending elements, resonance columns, and cyclic triaxial tests. The influences of anisotropy on the peak ground acceleration (PGA) and response spectrum are studied for Yangshan Port. Addi-tionally, the standard design response spectra considering the soil anisotropy were provided. A comparison reveals that the existing isotropic design response spectrum may lead to dangerous seismic design for the structures at Yangshan port.
Keywords
soil anisotropy; ground motion characteristics; standard design response spectrum
Subject
Engineering, Civil Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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