Investigating the Effect of Active Tuned Mass Damper on the Endurance Time Diagram of Tall Buildings

Document Type : Research Article

Authors

1 Iran University of Science and Technology: Tehran, Tehran

2 The Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology, Tehran, Iran.

3 Civil Engineering faculty, Iran University of Science and Technology, Tehran, Iran

Abstract

Nowadays, designing structures follow designs that are based on performance. Regarding the structures, designing based on performance requires dynamic, heavy and repetitive analyses. The endurance time method is a dynamic modern method based on the performance of the structure, which leads to the reduction of the number of structural analyses. In this method, the structure gets exposed to increasing acceleration functions that are getting more during time and then the structure`s seismic performance is evaluated using various demand parameters. In this article, though, using the endurance time method, the performance of a structure having an active mass damper was evaluated under endurance time acceleration functions of the ETA20e series. To this end, an 11-story structure having an active mass damper was modeled in MATLAB software using one of the fuzzy control methods. Having investigated the results of the endurance time diagram that had drawn the before and after statuses of the refinement process using active tuned mass damper, the efficiency of this system in reducing the interstory- drift and maximum final story drift was explored. Moreover, the results of endurance time under acceleration function of ETA20e series were compared with the time history analysis of 7 selected accelerograms. The results indicated that endurance time function could present an appropriate prediction in estimating the behavior of the structure under selected accelerograms. The results indicated the significant impact of adding mass dampers under increasing the endurance time of the building under investigation.

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References

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Amirkabir Journal of Civil Engineering
Volume 53, Issue 9
December 2021
Pages 3731-3750

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