Seismic Response Reduction of Megaframe with Vibration Control Substructure

Megaframe with vibration control substructure (MFVCS) is a tuned mass damper system, which converts the substructures into the tuned mass. In this study, a kind of MFVCS using both lead-rubber bearings and viscous dampers to connect the vibration control substructure with the megaframe was proposed....

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Main Authors: Jun-Qi Huang, Xun Chong, Qing Jiang, Xian-Guo Ye, Han-Qin Wang
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2018/9427908
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author Jun-Qi Huang
Xun Chong
Qing Jiang
Xian-Guo Ye
Han-Qin Wang
author_facet Jun-Qi Huang
Xun Chong
Qing Jiang
Xian-Guo Ye
Han-Qin Wang
author_sort Jun-Qi Huang
collection DOAJ
description Megaframe with vibration control substructure (MFVCS) is a tuned mass damper system, which converts the substructures into the tuned mass. In this study, a kind of MFVCS using both lead-rubber bearings and viscous dampers to connect the vibration control substructure with the megaframe was proposed. Then, based on a validated finite element model, a parametric analysis was conducted to study the effect of two parameters, the tuning frequency (i.e., the frequency of the substructure) and the damping provided by the lead-rubber bearings and viscous dampers on the seismic response reduction of the MFVCS under both frequent and rare earthquakes (i.e., probability of exceedance of 63% and 2% in 50 years, resp.). Furthermore, the optimized values of these two parameters were achieved. The results indicated that (1) the proposed MFVCS could provide a considerable seismic response reduction under frequent earthquake and showed a strong robustness; (2) the optimized values of the frequency ratio (ratio of tuning frequency to the megaframe’s natural frequency) and damping scale factor (ratio between the investigated damping and a standard value) were 0.96 and 1.0, respectively; and (3) the seismic response reduction of the MFVCS under rare earthquake was lower than that under frequent earthquake.
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institution Kabale University
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language English
publishDate 2018-01-01
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series Shock and Vibration
spelling doaj-art-92a2c6264d224e8fa15d521f2a8dd3ed2025-02-03T05:43:49ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/94279089427908Seismic Response Reduction of Megaframe with Vibration Control SubstructureJun-Qi Huang0Xun Chong1Qing Jiang2Xian-Guo Ye3Han-Qin Wang4School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, ChinaMegaframe with vibration control substructure (MFVCS) is a tuned mass damper system, which converts the substructures into the tuned mass. In this study, a kind of MFVCS using both lead-rubber bearings and viscous dampers to connect the vibration control substructure with the megaframe was proposed. Then, based on a validated finite element model, a parametric analysis was conducted to study the effect of two parameters, the tuning frequency (i.e., the frequency of the substructure) and the damping provided by the lead-rubber bearings and viscous dampers on the seismic response reduction of the MFVCS under both frequent and rare earthquakes (i.e., probability of exceedance of 63% and 2% in 50 years, resp.). Furthermore, the optimized values of these two parameters were achieved. The results indicated that (1) the proposed MFVCS could provide a considerable seismic response reduction under frequent earthquake and showed a strong robustness; (2) the optimized values of the frequency ratio (ratio of tuning frequency to the megaframe’s natural frequency) and damping scale factor (ratio between the investigated damping and a standard value) were 0.96 and 1.0, respectively; and (3) the seismic response reduction of the MFVCS under rare earthquake was lower than that under frequent earthquake.http://dx.doi.org/10.1155/2018/9427908
spellingShingle Jun-Qi Huang
Xun Chong
Qing Jiang
Xian-Guo Ye
Han-Qin Wang
Seismic Response Reduction of Megaframe with Vibration Control Substructure
Shock and Vibration
title Seismic Response Reduction of Megaframe with Vibration Control Substructure
title_full Seismic Response Reduction of Megaframe with Vibration Control Substructure
title_fullStr Seismic Response Reduction of Megaframe with Vibration Control Substructure
title_full_unstemmed Seismic Response Reduction of Megaframe with Vibration Control Substructure
title_short Seismic Response Reduction of Megaframe with Vibration Control Substructure
title_sort seismic response reduction of megaframe with vibration control substructure
url http://dx.doi.org/10.1155/2018/9427908
work_keys_str_mv AT junqihuang seismicresponsereductionofmegaframewithvibrationcontrolsubstructure
AT xunchong seismicresponsereductionofmegaframewithvibrationcontrolsubstructure
AT qingjiang seismicresponsereductionofmegaframewithvibrationcontrolsubstructure
AT xianguoye seismicresponsereductionofmegaframewithvibrationcontrolsubstructure
AT hanqinwang seismicresponsereductionofmegaframewithvibrationcontrolsubstructure