Fig. 1.
The two substructures : soil and rigid structure with soil-structure interface [38]
Fig. 2.
Substructures: unbounded soil
Fig. 3.
Model of a structure equipped with active tendons and with SSI
Fig. 4.
Flowchart of solving the state equation with active control [18]
Fig. 5.
El-centro 1940 of the N-S Components
Fig. 6.
The data of the studied model
Tab. 1
The natural frequencies of the studied model with and without SSI (rad/s)
| Floor | SSI | Fixed |
|---|---|---|
| 1 | 14,514 | 17,236 |
| 2 | 43,162 | 48,295 |
| 3 | 68,091 | 69,789 |
Fig. 7.
The displacement, b) the velocity, and c) the acceleration of the final floor of the studied model, considering the effect of SSI, compared with the fixed case without control
Fig. 8.
Variation of maximum displacement at the last floor and maximum control force as a function of S/R ratios
Fig. 9.
Maximum displacements, velocities, and accelerations a) without and b) with ISS for the three controller positions compared to the case without control
Fig. 10.
The control force-displacement relationship at the last floor of the studied model a) without SSI and b) with SSI for the three controller positions compared to the case without control