Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement
Finite element analysis of a 122-meter concrete-filled steel tube arched chord truss bridge was performed using ANSYS to obtain the natural vibration characteristics of the bridge, both before and after reinforcement. In addition, the response spectrum and dynamic time history methods were used to a...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-03-01
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| Series: | Journal of Asian Architecture and Building Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/13467581.2020.1716772 |
| _version_ | 1797755651260153856 |
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| author | Daihai Chen Wenze Wang Zheng Li Zhenqi Xu Fengrui Ma |
| author_facet | Daihai Chen Wenze Wang Zheng Li Zhenqi Xu Fengrui Ma |
| author_sort | Daihai Chen |
| collection | DOAJ |
| description | Finite element analysis of a 122-meter concrete-filled steel tube arched chord truss bridge was performed using ANSYS to obtain the natural vibration characteristics of the bridge, both before and after reinforcement. In addition, the response spectrum and dynamic time history methods were used to analyze and compare its seismic performance. The results show that the transverse stiffness of the bridge’s main truss was relatively low. After the reinforcement, the vertical and the torsional frequencies of the bridge significantly increased by 24% and 32%, respectively. under the same condition, the axial force at the fixed end of the top chord of the strengthened bridge was reduced by roughly 29%, and the transverse and the vertical displacement at the middle of the top chord span were reduced by roughly 10% and 20%, respectively. Thus, the reinforcement measures significantly improved the vertical stiffness of the bridge. For this bridge, the dynamic time history analysis played a more controlling role in the seismic design. Among the three types of seismic waves, the El Centro wave yielded the largest transverse displacement result and hence, should preferably be used to assess the deflections. |
| first_indexed | 2024-03-12T17:50:11Z |
| format | Article |
| id | doaj.art-0d597f43e73f46f5853766e086c6bc62 |
| institution | Directory Open Access Journal |
| issn | 1347-2852 |
| language | English |
| last_indexed | 2024-03-12T17:50:11Z |
| publishDate | 2020-03-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Architecture and Building Engineering |
| spelling | doaj.art-0d597f43e73f46f5853766e086c6bc622023-08-03T09:07:49ZengTaylor & Francis GroupJournal of Asian Architecture and Building Engineering1347-28522020-03-011929010210.1080/13467581.2020.17167721716772Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcementDaihai Chen0Wenze Wang1Zheng Li2Zhenqi Xu3Fengrui Ma4Zhengzhou UniversityZhengzhou UniversityZhengzhou UniversityZhengzhou UniversityZhengzhou UniversityFinite element analysis of a 122-meter concrete-filled steel tube arched chord truss bridge was performed using ANSYS to obtain the natural vibration characteristics of the bridge, both before and after reinforcement. In addition, the response spectrum and dynamic time history methods were used to analyze and compare its seismic performance. The results show that the transverse stiffness of the bridge’s main truss was relatively low. After the reinforcement, the vertical and the torsional frequencies of the bridge significantly increased by 24% and 32%, respectively. under the same condition, the axial force at the fixed end of the top chord of the strengthened bridge was reduced by roughly 29%, and the transverse and the vertical displacement at the middle of the top chord span were reduced by roughly 10% and 20%, respectively. Thus, the reinforcement measures significantly improved the vertical stiffness of the bridge. For this bridge, the dynamic time history analysis played a more controlling role in the seismic design. Among the three types of seismic waves, the El Centro wave yielded the largest transverse displacement result and hence, should preferably be used to assess the deflections.http://dx.doi.org/10.1080/13467581.2020.1716772concrete-filled steel tube arched chord truss bridgenatural vibrationresponse spectrum methoddynamic time history methodbridge reinforcement |
| spellingShingle | Daihai Chen Wenze Wang Zheng Li Zhenqi Xu Fengrui Ma Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement Journal of Asian Architecture and Building Engineering concrete-filled steel tube arched chord truss bridge natural vibration response spectrum method dynamic time history method bridge reinforcement |
| title | Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement |
| title_full | Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement |
| title_fullStr | Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement |
| title_full_unstemmed | Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement |
| title_short | Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement |
| title_sort | comparative analysis of seismic performance of 122 meter long concrete filled steel tube arched chord truss bridge before and after reinforcement |
| topic | concrete-filled steel tube arched chord truss bridge natural vibration response spectrum method dynamic time history method bridge reinforcement |
| url | http://dx.doi.org/10.1080/13467581.2020.1716772 |
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