Control of vibrations in high-rise structures using base isolation technology

Abstract

Vibrations pose a threat to the structures and diverse construction models, including space stations and enormous mechanical carriers. In the case of low-rise structures, seismic vibration generates bottom shear in columns. The base isolator is capable of mitigating shear deformation, but the use of isolators alone in skyscrapers can result in flexural deformation of the entire structure when vibration is applied. Seismic waves can generate amplitude with increasing wavelength, resulting in horizontal deflection and warping. This bending and deflection can be mitigated with dampers that aid in the loss of energy. To prevent excessive vibrations from being transmitted to the superstructure, isolators must be provided. In this study, the base isolator model is optimized and implemented as a tension integrity suspension isolator. The effectiveness of the isolator was observed by an experimental investigation of sloshing of waves in a water tank. As a test model, the performance of the isolator is evaluated on a model of a wooden high-rise structure. Using the fast Fourier transform algorithm and the vibration analysis software Kampana, effective results were obtained.