| Azer Kasimzade, Emin Nematli, Magsad Novruzov Recent Developments on Passive control of High Reliable Structures |
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| Abstract. Classification of structural control systems, the mathematical equation of motion for systems with lumped parameters and time-varying all operations control methods and related solution methods shown. Attention has been drawn to the performance of seismic base-isolated structures against near-fault and far-source long-period earthquakes. It has been reported that, the vulnerable state of the important structures (seismically isolated structures, tall buildings, major pipelines and tunnels, large storage tanks, long-span bridges and others like this) under near-fault and long-period ground motions has been recognized worldwide during numerous strong earthquakes. To solve this problem, new generation Structural Seismic Isolation Method (SSIM) and System (SSIS) developed for protecting Highly Reliable Structures (HRS) against strong earthquakes including near-fault and long-period ground motions. In this research SSIM method with combination of oil dampers (OD) is presented for application to tower structures (Ts). Particularities, assessment and efficiency of this application was illustrated. Results indicate that the responses of the SSIS tower structure (SSIS-Ts) with combination of oil dampers is substantially lower than the existing structure that use the conventional oil dampers after repair (Fb-Ts). In parallel, the addition of the oil damper (OD) to the SSIS system caused the vibrations to fade more quickly and eliminated the possibility of resonance. This finding was also observed in the behavior of the structure after the external impact ended. The addition of the oil damper (OD) to the SSIS system also positively affected the after-shock vibration behaviour of the structure. |
| Keywords: Structural Control, SSIS control systems, Oil Damper control, Tower-Structures seismic protection, Near Fault Earthquakes |
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| DOI: https://doi.org/10.54381/itta2024.26 |