Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after Reinforcement
Taking a 62 m CFST bridge with a curved-string truss as the research object, according to its reinforcement scheme, the spatial finite element models of the bridge before and after reinforcement were established by using the general finite element software ANSYS. The natural frequencies of the bridg...
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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: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/4536365 |
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| author | Daihai Chen Yinxin Li Zheng Li Yilin Fang Laijing Ma Fengrui Ma |
| author_facet | Daihai Chen Yinxin Li Zheng Li Yilin Fang Laijing Ma Fengrui Ma |
| author_sort | Daihai Chen |
| collection | DOAJ |
| description | Taking a 62 m CFST bridge with a curved-string truss as the research object, according to its reinforcement scheme, the spatial finite element models of the bridge before and after reinforcement were established by using the general finite element software ANSYS. The natural frequencies of the bridge before and after reinforcement were calculated, and the seismic performance of the bridge was analyzed by using the response spectrum method. The results show that the frequencies of the reinforced bridges increase in varying degrees, especially the vertical and torsional frequencies. Before and after reinforcement, the maximum axial force in the upper chord of the bridge is the largest, and the shear force and bending moment are small. The maximum internal force appears at the two ends of the upper chord. This position should be regarded as the weak link of the bridge seismic resistance. Under the same conditions, the axial force of the bridge after reinforcement is reduced by about 30% compared with that before reinforcement, and the displacement of the bridge after reinforcement is reduced in varying degrees. The reinforcement measures can improve the lateral and vertical stiffness of the bridge, especially the stiffness of the deck system. |
| format | Article |
| id | doaj-art-085891ef7d3941d79a510f36c45b31cf |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-085891ef7d3941d79a510f36c45b31cf2025-02-03T01:01:52ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/45363654536365Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after ReinforcementDaihai Chen0Yinxin Li1Zheng Li2Yilin Fang3Laijing Ma4Fengrui Ma5Institute of Bridge Engineering, School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaInstitute of Bridge Engineering, School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaInstitute of Bridge Engineering, School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaHenan Expressway Development Co., Ltd, Zhengzhou 450052, ChinaInstitute of Bridge Engineering, School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaInstitute of Bridge Engineering, School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaTaking a 62 m CFST bridge with a curved-string truss as the research object, according to its reinforcement scheme, the spatial finite element models of the bridge before and after reinforcement were established by using the general finite element software ANSYS. The natural frequencies of the bridge before and after reinforcement were calculated, and the seismic performance of the bridge was analyzed by using the response spectrum method. The results show that the frequencies of the reinforced bridges increase in varying degrees, especially the vertical and torsional frequencies. Before and after reinforcement, the maximum axial force in the upper chord of the bridge is the largest, and the shear force and bending moment are small. The maximum internal force appears at the two ends of the upper chord. This position should be regarded as the weak link of the bridge seismic resistance. Under the same conditions, the axial force of the bridge after reinforcement is reduced by about 30% compared with that before reinforcement, and the displacement of the bridge after reinforcement is reduced in varying degrees. The reinforcement measures can improve the lateral and vertical stiffness of the bridge, especially the stiffness of the deck system.http://dx.doi.org/10.1155/2020/4536365 |
| spellingShingle | Daihai Chen Yinxin Li Zheng Li Yilin Fang Laijing Ma Fengrui Ma Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after Reinforcement Advances in Civil Engineering |
| title | Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after Reinforcement |
| title_full | Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after Reinforcement |
| title_fullStr | Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after Reinforcement |
| title_full_unstemmed | Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after Reinforcement |
| title_short | Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after Reinforcement |
| title_sort | reaction spectrum comparative analysis of seismic performance of 62 m cfst bridge with curved string truss before and after reinforcement |
| url | http://dx.doi.org/10.1155/2020/4536365 |
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