Assessment of Kinematic Effects of Soil-Structure Interaction for Vertical Translational Motions at Multiple Instrumented Large and Deeply Embedded Foundations
Publication: Geo-Congress 2023
ABSTRACT
The substructure method, which is a widely used method in engineering practice to assess soil-structure interaction (SSI), suggests the motion at the foundation (FM) is usually controlled by the simultaneous contribution of kinematic SSI, where the stiffness of a massless foundation deviates the FM from free-field motion (FFM), and inertial SSI, where the structure’s inertia further modifies the FM. The kinematic SSI effects is estimated by calculating the ratio of response spectra (RRS) between FM and FFM using simplified procedures that were calibrated semi-empirically using earthquake databases mainly from California only limited to horizontal translational motions. This study evaluates empirical vertical translational RRSs based on recorded data at five nuclear facilities in Japan. The results illustrate that simplified design guidelines for horizontal RRSs tend to match the shape of the foundation vertical translational RRSs but require an amplitude modification. In conclusion, the comparisons establish the need for a dedicated simplified procedure for vertical translational RRSs.
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Information & Authors
Information
Published In
Geo-Congress 2023
Pages: 217 - 225
History
Published online: Mar 23, 2023
ASCE Technical Topics:
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering mechanics
- Foundation-structure interaction
- Foundations
- Geomechanics
- Geotechnical engineering
- Geotechnical investigation
- Ground motion
- Kinematics
- Kinetics
- Motion (dynamics)
- Soil dynamics
- Soil mechanics
- Soil structures
- Soil-structure interaction
- Solid mechanics
- Structural engineering
- Structures (by type)
Authors
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