Shaking-Table Test and Finite Element Simulation of a Novel Friction Energy-Dissipating Braced Frame
To enhance the effect of seismic mitigation in medium-sized buildings, this study introduced a novel friction damper within a braced frame, forming a friction energy-dissipating braced frame (FDBF). The seismic reduction mechanism of the FDBF was examined, and its performance was evaluated through s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/14/2/390 |
| _version_ | 1797298695877689344 |
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| author | Lijuan Yan Chunwei Zhang |
| author_facet | Lijuan Yan Chunwei Zhang |
| author_sort | Lijuan Yan |
| collection | DOAJ |
| description | To enhance the effect of seismic mitigation in medium-sized buildings, this study introduced a novel friction damper within a braced frame, forming a friction energy-dissipating braced frame (FDBF). The seismic reduction mechanism of the FDBF was examined, and its performance was evaluated through shaking-table tests and finite element simulations. The hysteresis performance of the novel damper was assessed through low-cycle repeated loading tests, which yielded predominantly rectangular and full hysteresis curves, exemplifying robust energy dissipation capacity. The shaking-table tests of the FDBF indicated significant modifications in the dynamic characteristics of the original frame structure, which notably reduced the natural vibration period and enhanced the damping. Additionally, the FDBF remarkably reduced both acceleration and displacement responses during seismic excitation. Optimizing the orientation of the energy dissipation brace significantly improved seismic reduction efficiency. A dynamic time history analysis, employing finite element software, was conducted on the FDBF equipped with a friction energy dissipation brace at each level. Comparative analysis with both the moment-resistant frame and ordinary braced frame revealed that the FDBF substantially lowered the peak acceleration at the apex of the structure, achieving a reduction rate of 40–50%. Under both design and rare earthquake conditions, the FDBF demonstrated superior seismic mitigation capabilities, especially under rare earthquakes. Future studies should investigate various structural types with energy dissipation braces at different levels to identify the most efficient layout for the novel friction energy dissipation brace, thereby guiding relevant engineering practices. |
| first_indexed | 2024-03-07T22:39:45Z |
| format | Article |
| id | doaj.art-723973f4a7ce458c88e958976165a293 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-07T22:39:45Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-723973f4a7ce458c88e958976165a2932024-02-23T15:10:05ZengMDPI AGBuildings2075-53092024-02-0114239010.3390/buildings14020390Shaking-Table Test and Finite Element Simulation of a Novel Friction Energy-Dissipating Braced FrameLijuan Yan0Chunwei Zhang1School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaTo enhance the effect of seismic mitigation in medium-sized buildings, this study introduced a novel friction damper within a braced frame, forming a friction energy-dissipating braced frame (FDBF). The seismic reduction mechanism of the FDBF was examined, and its performance was evaluated through shaking-table tests and finite element simulations. The hysteresis performance of the novel damper was assessed through low-cycle repeated loading tests, which yielded predominantly rectangular and full hysteresis curves, exemplifying robust energy dissipation capacity. The shaking-table tests of the FDBF indicated significant modifications in the dynamic characteristics of the original frame structure, which notably reduced the natural vibration period and enhanced the damping. Additionally, the FDBF remarkably reduced both acceleration and displacement responses during seismic excitation. Optimizing the orientation of the energy dissipation brace significantly improved seismic reduction efficiency. A dynamic time history analysis, employing finite element software, was conducted on the FDBF equipped with a friction energy dissipation brace at each level. Comparative analysis with both the moment-resistant frame and ordinary braced frame revealed that the FDBF substantially lowered the peak acceleration at the apex of the structure, achieving a reduction rate of 40–50%. Under both design and rare earthquake conditions, the FDBF demonstrated superior seismic mitigation capabilities, especially under rare earthquakes. Future studies should investigate various structural types with energy dissipation braces at different levels to identify the most efficient layout for the novel friction energy dissipation brace, thereby guiding relevant engineering practices.https://www.mdpi.com/2075-5309/14/2/390novel friction damperenergy-dissipating braceshaking-table testfinite element simulation |
| spellingShingle | Lijuan Yan Chunwei Zhang Shaking-Table Test and Finite Element Simulation of a Novel Friction Energy-Dissipating Braced Frame Buildings novel friction damper energy-dissipating brace shaking-table test finite element simulation |
| title | Shaking-Table Test and Finite Element Simulation of a Novel Friction Energy-Dissipating Braced Frame |
| title_full | Shaking-Table Test and Finite Element Simulation of a Novel Friction Energy-Dissipating Braced Frame |
| title_fullStr | Shaking-Table Test and Finite Element Simulation of a Novel Friction Energy-Dissipating Braced Frame |
| title_full_unstemmed | Shaking-Table Test and Finite Element Simulation of a Novel Friction Energy-Dissipating Braced Frame |
| title_short | Shaking-Table Test and Finite Element Simulation of a Novel Friction Energy-Dissipating Braced Frame |
| title_sort | shaking table test and finite element simulation of a novel friction energy dissipating braced frame |
| topic | novel friction damper energy-dissipating brace shaking-table test finite element simulation |
| url | https://www.mdpi.com/2075-5309/14/2/390 |
| work_keys_str_mv | AT lijuanyan shakingtabletestandfiniteelementsimulationofanovelfrictionenergydissipatingbracedframe AT chunweizhang shakingtabletestandfiniteelementsimulationofanovelfrictionenergydissipatingbracedframe |