Muthanna Journal of Engineering and Technology
Volume (12), Issue (2), Year (30 December 2024), Pages (73-79)
DOI:10.52113/3/eng/mjet/2024-12-02/73-79
Research Article By:
Ahmed H. Shubber and Basim Jabbar Abbas
Corresponding author E-mail: ahmed.h.abbas@mu.edu.iq
ABSTRACT
Seismic isolation achieves its purpose by making the structure functionally independent from the ground through seismic isolators, which are devices that mitigate the horizontal earthquake motion that can be transmitted to a building. The adoption of seismic isolation is not only limited to new structures but also included in many existing structures— major earthquakes demonstrated the effectiveness of these systems, so such is adopted. Most past research on seismic isolation techniques have been confined to regional studies; this paper proposes a historical review on evolution of isolations methods chronologically. Classification of seismic isolation techniques is done based on their mechanism with brief descriptions of their advantages and disadvantages and any recent innovations or alternative methods widely used under this category noted at the end of each classification provided within the study. Earthquakes are considered one of the most dangerous natural conditions, so they claim thousands of lives and property annually to reduce these damages to the facility, several studies and research have been conducted on the possibility of reducing the effects of seismic waves either by absorbing that energy or dissipating it using different techniques to isolate the foundations or to isolate the entire building, but the problem of these techniques needs a special work environment with a high material cost. The research aims to study the different methods of seismic isolation or damping for the design of foundations separately or multi-storey buildings as a whole with retarded waves according to the nature and strength of the seismic intensity as well as the materials available in the country and to find the best way to reduce the vibrations resulting from seismic movement.
Keywords: Seismic isolation, Seismic load, Damping, Isolation for footing, Earthquakes.