Seismic Performance Evaluation of Building-Damper System under Near-Fault Earthquake
The building-damper system designed by a seismic code is usually considered to be able to withstand the attack of strong earthquakes. However, near-fault earthquakes, especially those with the forward-directivity effect, might cause early and unexpected failure of code-designed dampers and consequen...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/2763709 |
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| _version_ | 1832558472124694528 |
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| author | Xiaoli Wu Wei Guo Ping Hu Dan Bu Xu Xie Yao Hu |
| author_facet | Xiaoli Wu Wei Guo Ping Hu Dan Bu Xu Xie Yao Hu |
| author_sort | Xiaoli Wu |
| collection | DOAJ |
| description | The building-damper system designed by a seismic code is usually considered to be able to withstand the attack of strong earthquakes. However, near-fault earthquakes, especially those with the forward-directivity effect, might cause early and unexpected failure of code-designed dampers and consequent severe structural damage. In this paper, by taking into account near-fault earthquakes, seismic performance of the building-damper system and damper failure’s influence are evaluated systematically. A 9-storey steel building is designed by the Chinese seismic code as the benchmark model, and five typical dampers, including buckling-restrained brace damper (BRB), friction damper (FD), self-centering damper (SCD), viscous damper (VD), and viscoelastic damper (VED), are adopted. It was found that the building-damper systems show a large response and possible damper failure under the near-fault earthquake excitations. Then, the influence of damper failure is investigated, which reveals that damper failure would significantly affect seismic performance of the building-damper system, especially for the building-SCD system. Subsequently, by introducing the artificial near-fault earthquake excitation, the influences of different pulse parameters, such as pulse velocity amplitude, pulse period, and the number of significant pulses, are studied. It shows that the pulse velocity amplitude and pulse period obviously affect the seismic performance, while the number of significant pulses presents little influence. |
| format | Article |
| id | doaj-art-a850e87516dc4f6d9c7e8048f7259f89 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-a850e87516dc4f6d9c7e8048f7259f892025-02-03T01:32:23ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/27637092763709Seismic Performance Evaluation of Building-Damper System under Near-Fault EarthquakeXiaoli Wu0Wei Guo1Ping Hu2Dan Bu3Xu Xie4Yao Hu5School of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, University of South China, Hengyang 421001, ChinaHunan Architectural Design Institute Limited Company, Changsha 410012, ChinaDepartment of Civil Engineering, University of British Columbia, Vancouver, CanadaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaThe building-damper system designed by a seismic code is usually considered to be able to withstand the attack of strong earthquakes. However, near-fault earthquakes, especially those with the forward-directivity effect, might cause early and unexpected failure of code-designed dampers and consequent severe structural damage. In this paper, by taking into account near-fault earthquakes, seismic performance of the building-damper system and damper failure’s influence are evaluated systematically. A 9-storey steel building is designed by the Chinese seismic code as the benchmark model, and five typical dampers, including buckling-restrained brace damper (BRB), friction damper (FD), self-centering damper (SCD), viscous damper (VD), and viscoelastic damper (VED), are adopted. It was found that the building-damper systems show a large response and possible damper failure under the near-fault earthquake excitations. Then, the influence of damper failure is investigated, which reveals that damper failure would significantly affect seismic performance of the building-damper system, especially for the building-SCD system. Subsequently, by introducing the artificial near-fault earthquake excitation, the influences of different pulse parameters, such as pulse velocity amplitude, pulse period, and the number of significant pulses, are studied. It shows that the pulse velocity amplitude and pulse period obviously affect the seismic performance, while the number of significant pulses presents little influence.http://dx.doi.org/10.1155/2020/2763709 |
| spellingShingle | Xiaoli Wu Wei Guo Ping Hu Dan Bu Xu Xie Yao Hu Seismic Performance Evaluation of Building-Damper System under Near-Fault Earthquake Shock and Vibration |
| title | Seismic Performance Evaluation of Building-Damper System under Near-Fault Earthquake |
| title_full | Seismic Performance Evaluation of Building-Damper System under Near-Fault Earthquake |
| title_fullStr | Seismic Performance Evaluation of Building-Damper System under Near-Fault Earthquake |
| title_full_unstemmed | Seismic Performance Evaluation of Building-Damper System under Near-Fault Earthquake |
| title_short | Seismic Performance Evaluation of Building-Damper System under Near-Fault Earthquake |
| title_sort | seismic performance evaluation of building damper system under near fault earthquake |
| url | http://dx.doi.org/10.1155/2020/2763709 |
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