Seismic Reduction Performance of Wrap Rope Connection Devices for Continuous Girder Bridges
In this article, wrap rope connection device (WRCD), which considers the relative acceleration of piers and beam as a control variable, is proposed for improving the current situation of continuous girder bridges whose bearing force of a single pier is along the longitudinal direction and based on t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2023-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2023/5213452 |
| _version_ | 1797871160524800000 |
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| author | Yanfang Liu Wenxue Zhang Xiuli Du Weigang Bao |
| author_facet | Yanfang Liu Wenxue Zhang Xiuli Du Weigang Bao |
| author_sort | Yanfang Liu |
| collection | DOAJ |
| description | In this article, wrap rope connection device (WRCD), which considers the relative acceleration of piers and beam as a control variable, is proposed for improving the current situation of continuous girder bridges whose bearing force of a single pier is along the longitudinal direction and based on the synergy principle. The WRCD device, which meets the slow displacement requirements of temperature and vehicle load under normal operation, is implemented and used to improve the performance of the sliding bearing pier. During earthquakes, because of the amplification effect of the wrap rope, the instantaneous large stiffness state in the longitudinal force can be achieved. Based on the shaking table test of a typical continuous girder bridge for examining the performance of the WRCD during earthquakes, the dynamic characteristics, structural acceleration, displacement, and strain responses of the structure under different frequency spectra, and seismic input intensities are analyzed and the seismic reduction performance of the WRCD is demonstrated. This analysis demonstrated that, by activating WRCD, the ratio of the acceleration response of the fixed bearing pier to the sliding bearing pier increased from 10% to 57%; moreover, the force on each pier appeared more uniform. Furthermore, with an increase in the input intensity of the earthquake, the displacement of the primary beam and the seismic response of the fixed pier bottom considerably decreased and the synergy effect of each pier was more prominent. Under certain site conditions, the WRCD can effectively improve the synergy effect between the sliding bearing piers and fixed bearing pier; however, the improvement in the obtained result is directly associated with the seismic input characteristics. The design parameters of the WRCD should be determined as per different site conditions and the optimum application range of the WRCD. |
| first_indexed | 2024-04-10T00:38:41Z |
| format | Article |
| id | doaj.art-9f67b8e5871c42a0851fdb859fae633c |
| institution | Directory Open Access Journal |
| issn | 1687-8094 |
| language | English |
| last_indexed | 2024-04-10T00:38:41Z |
| publishDate | 2023-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj.art-9f67b8e5871c42a0851fdb859fae633c2023-03-14T07:40:04ZengHindawi LimitedAdvances in Civil Engineering1687-80942023-01-01202310.1155/2023/5213452Seismic Reduction Performance of Wrap Rope Connection Devices for Continuous Girder BridgesYanfang Liu0Wenxue Zhang1Xiuli Du2Weigang Bao3College of Architecture and Civil EngineeringCollege of Architecture and Civil EngineeringCollege of Architecture and Civil EngineeringChina Communications Construction Company LimitedIn this article, wrap rope connection device (WRCD), which considers the relative acceleration of piers and beam as a control variable, is proposed for improving the current situation of continuous girder bridges whose bearing force of a single pier is along the longitudinal direction and based on the synergy principle. The WRCD device, which meets the slow displacement requirements of temperature and vehicle load under normal operation, is implemented and used to improve the performance of the sliding bearing pier. During earthquakes, because of the amplification effect of the wrap rope, the instantaneous large stiffness state in the longitudinal force can be achieved. Based on the shaking table test of a typical continuous girder bridge for examining the performance of the WRCD during earthquakes, the dynamic characteristics, structural acceleration, displacement, and strain responses of the structure under different frequency spectra, and seismic input intensities are analyzed and the seismic reduction performance of the WRCD is demonstrated. This analysis demonstrated that, by activating WRCD, the ratio of the acceleration response of the fixed bearing pier to the sliding bearing pier increased from 10% to 57%; moreover, the force on each pier appeared more uniform. Furthermore, with an increase in the input intensity of the earthquake, the displacement of the primary beam and the seismic response of the fixed pier bottom considerably decreased and the synergy effect of each pier was more prominent. Under certain site conditions, the WRCD can effectively improve the synergy effect between the sliding bearing piers and fixed bearing pier; however, the improvement in the obtained result is directly associated with the seismic input characteristics. The design parameters of the WRCD should be determined as per different site conditions and the optimum application range of the WRCD.http://dx.doi.org/10.1155/2023/5213452 |
| spellingShingle | Yanfang Liu Wenxue Zhang Xiuli Du Weigang Bao Seismic Reduction Performance of Wrap Rope Connection Devices for Continuous Girder Bridges Advances in Civil Engineering |
| title | Seismic Reduction Performance of Wrap Rope Connection Devices for Continuous Girder Bridges |
| title_full | Seismic Reduction Performance of Wrap Rope Connection Devices for Continuous Girder Bridges |
| title_fullStr | Seismic Reduction Performance of Wrap Rope Connection Devices for Continuous Girder Bridges |
| title_full_unstemmed | Seismic Reduction Performance of Wrap Rope Connection Devices for Continuous Girder Bridges |
| title_short | Seismic Reduction Performance of Wrap Rope Connection Devices for Continuous Girder Bridges |
| title_sort | seismic reduction performance of wrap rope connection devices for continuous girder bridges |
| url | http://dx.doi.org/10.1155/2023/5213452 |
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