Influence of ground motion intensity on the effectiveness of tuned mass dampers

✍ Scribed by Soto-Brito, Ricardo; Ruiz, Sonia E.

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 245 KB
• Volume: 28
• Category: Article
• ISSN: 0098-8847
• DOI: 10.1002/(sici)1096-9845(199911)28:11<1255::aid-eqe865>3.0.co;2-c

✦ Synopsis

The e!ectiveness of Tuned Mass Dampers (TMD) on buildings subjected to moderate and high-intensity motions is analysed. First, the response of a 22-storey four-bay reinforced concrete non-linear frame with a TMD is studied for motions with di!erent intensities. Several values of the relevant parameters are assumed in the analyses. Then, equivalent single-degree-of-freedom systems with TMDs and without them are de"ned and analysed under the action of ground motions with intensities associated with di!erent return intervals at the site where the structures are located. Vulnerability curves for the systems are obtained based on the probabilities of reaching two di!erent performance limit states. The expected annual rate of exceedance of each limit state is calculated. The results show that the e!ectiveness of TMDs is higher for systems with small non-linearity produced by small and moderate earthquakes, than for systems with high non-linear behaviour, generally associated with high-intensity motions. Some recommendations about the applicability of TMD are given.