EFFICIENCY OF TMDS AND TLDS FOR LOW-RISE AND MID-RISE BUILDINGS SUBJECTED TO NEAR-FIELD AND FAR-FIELD EARTHQUAKES

Tuned mass dampers (TMDs) and tuned liquid dampers (TLDs) are the most well-known passive control systems used to decrease structural responses against earthquake excitations. In the present study, the performance of equipped low-rise and mid-rise buildings with these kinds of dampers was evaluated, and the effects of near-field and far-field earthquakes were compared. To this end, the dynamic analyses have been accomplished in both controlled and uncontrolled states using seven ground motion records of near-field and far-field. Furthermore, both TMD and TLD at these buildings have been modeled with five various mass, stiffness, and damping percentages. The results demonstrate that TMD has better performance as compared to TLD, and descending structural responses in a low-rise building in near-field ground motion are more than far-field earthquakes. However, the responses of a mid-rise building in far-field are less than the near-field records.

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Jong Wan Hu, Kobra Naeim, Iman Mansouri, Hamed Rahman Shokrgozar