Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Geomechanics and Engineering Volume 34, Number 6, September 2023 , pages 649-664 DOI: https://doi.org/10.12989/gae.2023.34.6.649 |
|
|
|
Sensitivity analysis of mass ratio effect on settlement and seismic response of shallow foundation using numerical simulation |
||
Kil-Wan Ko, Jeong-Gon Ha, Jinsun Lee and Gye-Chun Cho
|
||
| Abstract | ||
| Structural inertial interaction is a representative the effect of dynamic soil–foundation–structure interaction (SFSI), which leads to a relative displacement between soil and foundation, period lengthening, and damping increasing phenomena. However, for a system with a significantly heavy foundation, the dynamic inertia of the foundation influences and interacts with the structural seismic response. The structure-to-foundation mass ratio (MR) quantifies the distribution of mass between the structure and foundation for a structure on a shallow foundation. Although both systems exhibit the same vertical factor of safety (FSv), the MR and corresponding seismic responses attributed to the structure and foundation masses may differ. This study explored the influence of MR on the permanent deformation and seismic response of soil-foundation-structure system considering SFSI via numerical simulations. Given that numerous dimensionless parameters of SFSI described its influence on the structural seismic response, the parameters, except for MR and FSv, were fixed for the sensitivity analysis. The results demonstrated that the foundation inertia of heavier foundations induced more settlement due to sliding behavior of heavily-loaded systems. Moreover, the structural inertia of heavier structures evidently exhibited foundation rocking behavior, which results in a more elongated natural period of the structure for lightly-loaded systems. | ||
| Key Words | ||
| dynamic soil-foundation-structure interaction; foundation settlement; inertial behavior; mass ratio; numerical modeling | ||
| Address | ||
| Kil-Wan Ko: Department of Civil and Environmental Engineering, University of Southern California, Kaprielian Hall, 3620 South Vermont Avenue, Los Angeles, USA Jeong-Gon Ha: Advanced Structures and Seismic Safety Research Division, Korea Atomic Energy Research Institute, 111 Daedeok Daero 989 beon gil, Yuseong gu, Daejeon, Republic of Korea Jinsun Lee: Department of Civil and Environmental Engineering, Wonkwang University, 460 Iksan-daero, Iksan-si, Jeollabuk-do, Republic of Korea Gye-Chun Cho: Department of Civil and Environmental Engineering, Korean Advanced Institute for Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea | ||