| Title |
Shaking Table Experiment of Soil-Structure Interaction System with Static Stiffness of Soil |
| Authors |
Lee Sung-Kyung ; Min Kyung-Won |
| Keywords |
Shaking Table Experiment ; Soil-Structure Interaction System ; Substructure Method ; Acceleration Feedback ; Velocity Feedback ; Parmelee's Soil Stiffness |
| Abstract |
This paper presents the methodologies of shaking table experiment of soil-structure interaction system comprising a superstructure with foundation on half-space soil. The proposed shaking table experiment in this paper is performed only using building specimen as an experimental part, and to consider the effect of soil on building specimen the Parmelee's soil stiffness that has constant values for stiffness and damping coefficients, irrespective of frequency components, is reflected on the control algorithm within control computer to control the motion of shaking table. The proposed methodologies in this paper are summarized as:
① In acceleration feedback method, the interaction force acting between superstructure and soil is measured from the acceleration observations of building specimen and shaking table, and the shaking table is used for exciting the building specimen with the motion of acceleration of foundation of total soil-structure interaction system to replicate its behavior, based on the acceleration-formulated interaction force.
② In velocity feedback method, the interaction force acting between superstructure and soil is measured from observing the accelerations of building specimen and shaking table, and using the relation of velocity-formulated interaction force the shaking table is used for exciting the building specimen with the motion of velocity of foundation of total soil-structure interaction system to replicate its behavior.
The applicability of the proposed methodologies to the shaking table test is investigated and experimentally verified in this paper. |