STRONG GROUND MOTION EFFECTS ON SEISMIC RESPONSE REDUCTION BY TLCDS

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ZAHRAEI SEYED MAHDI; KAVAND A.A.

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Journal: Scientia Iranica Year:2008 | Volume:15 | Issue:3 Page(s): 275-285

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Title

STRONG GROUND MOTION EFFECTS ON SEISMIC RESPONSE REDUCTION BY TLCDS

Author(s)

ZAHRAEI SEYED MAHDI | KAVAND A.A. | Issue Writer Certificate

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Abstract

Nowadays, various types of passive control systems are being used as an effective solution to reduce the seismic responses of structures. One type of these systems, the Tuned Liquid Column Damper (TLCD), suppresses the input seismic energy by a combined action, including the movement of liquid mass in the container, a restoring force on the liquid, due to gravity loads, and the damping, due to liquid movement through the orifices. In this paper, the possible effects of seismic excitation characteristics, such as frequency content and soil condition, on the seismic performance of TLCDs, are investigated, using nonlinear time-history analyses. For this purpose, a ten-story building was modeled as an elastic MDOF structure and used for numerical analyses. For the time-history analyses, among the past strong ground motion records of Iran, 16 records with different characteristics were selected. The results of this study show that these characteristics play a substantial role in the performance of TLCDs and they should be, accordingly, considered in the designing of TLCDs. In some cases, TLCD is able to reduce structural displacement up to 50%, while, in most cases, the effectiveness of TLCD in reducing structural acceleration is not significant. However, it should be mentioned that, in real applications, de-tuning may occur, due to the inelastic behavior of structures, which can reduce effectiveness. This study also shows that the displacement reduction capacity of TLCDs is highly dependent on excitation characteristics, while the acceleration reduction capacity is not that sensitive.

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APA: Copy

ZAHRAEI, SEYED MAHDI, & KAVAND, A.A.. (2008). STRONG GROUND MOTION EFFECTS ON SEISMIC RESPONSE REDUCTION BY TLCDS. SCIENTIA IRANICA, 15(3), 275-285. SID. https://sid.ir/paper/289661/en

Vancouver: Copy

ZAHRAEI SEYED MAHDI, KAVAND A.A.. STRONG GROUND MOTION EFFECTS ON SEISMIC RESPONSE REDUCTION BY TLCDS. SCIENTIA IRANICA[Internet]. 2008;15(3):275-285. Available from: https://sid.ir/paper/289661/en

IEEE: Copy

SEYED MAHDI ZAHRAEI, and A.A. KAVAND, “STRONG GROUND MOTION EFFECTS ON SEISMIC RESPONSE REDUCTION BY TLCDS,” SCIENTIA IRANICA, vol. 15, no. 3, pp. 275–285, 2008, [Online]. Available: https://sid.ir/paper/289661/en

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