Dynamic Factor of Bridges Subjected to Linear Induction Motor Train Load
The linear induction motor (LIM) has been used in urban rail transit systems in China and other parts of the world. However, specialized specifications for design or assessment of bridges in urban rail transit systems have not yet been established. The electromagnetic force of LIM complicates vehicl...
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| Format: | Article |
| Language: | English |
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Riga Technical University Press
2011-09-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
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| Online Access: | https://bjrbe-journals.rtu.lv/article/view/3753 |
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| author | Xu-hui He Andrew Scanlon Peng Li |
| author_facet | Xu-hui He Andrew Scanlon Peng Li |
| author_sort | Xu-hui He |
| collection | DOAJ |
| description | The linear induction motor (LIM) has been used in urban rail transit systems in China and other parts of the world. However, specialized specifications for design or assessment of bridges in urban rail transit systems have not yet been established. The electromagnetic force of LIM complicates vehicle-bridge interaction. In this paper, a typical bridge on the Guangzhou metro line 4 is evaluated both experimentally and theoretically to determine vehicle-bridge interaction characteristics. The LIM vehicle is represented by a model of secondary suspension with 6 degrees of freedom, and the bridge is modeled using standard beam elements. The coupled motion equation is formulated using the principle of total potential energy with stationary value in an elastic system and solved by using the Newmark-β method. Field dynamical tests were also performed on the bridge. The calculated and experimental vertical displacement time-histories for LIM trains crossing the bridge were obtained and dynamic factors were developed. A formula for determination of the dynamic factor, which can provide an engineering basis for design and evaluation of bridges in urban rail transit system, is proposed. |
| format | Article |
| id | doaj-art-520751e891a34c2fb4fc659305f1e2bc |
| institution | DOAJ |
| issn | 1822-427X 1822-4288 |
| language | English |
| publishDate | 2011-09-01 |
| publisher | Riga Technical University Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj-art-520751e891a34c2fb4fc659305f1e2bc2025-08-20T02:51:57ZengRiga Technical University PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882011-09-016318519210.3846/bjrbe.2011.242084Dynamic Factor of Bridges Subjected to Linear Induction Motor Train LoadXu-hui He0Andrew Scanlon1Peng Li2School of Civil Engineering, Central South University, Changsha 410075, Hunan, ChinaDept of Civil and Environmental Engineering, Pennsylvania State University, State college 16802, PA, USAFujian Academy of Building Research, Fuzhou 35000, Fujian, ChinaThe linear induction motor (LIM) has been used in urban rail transit systems in China and other parts of the world. However, specialized specifications for design or assessment of bridges in urban rail transit systems have not yet been established. The electromagnetic force of LIM complicates vehicle-bridge interaction. In this paper, a typical bridge on the Guangzhou metro line 4 is evaluated both experimentally and theoretically to determine vehicle-bridge interaction characteristics. The LIM vehicle is represented by a model of secondary suspension with 6 degrees of freedom, and the bridge is modeled using standard beam elements. The coupled motion equation is formulated using the principle of total potential energy with stationary value in an elastic system and solved by using the Newmark-β method. Field dynamical tests were also performed on the bridge. The calculated and experimental vertical displacement time-histories for LIM trains crossing the bridge were obtained and dynamic factors were developed. A formula for determination of the dynamic factor, which can provide an engineering basis for design and evaluation of bridges in urban rail transit system, is proposed.https://bjrbe-journals.rtu.lv/article/view/3753linear induction motor (lim)elevated bridgetraininteractiondynamic factor (df)electromagnetic force |
| spellingShingle | Xu-hui He Andrew Scanlon Peng Li Dynamic Factor of Bridges Subjected to Linear Induction Motor Train Load The Baltic Journal of Road and Bridge Engineering linear induction motor (lim) elevated bridge train interaction dynamic factor (df) electromagnetic force |
| title | Dynamic Factor of Bridges Subjected to Linear Induction Motor Train Load |
| title_full | Dynamic Factor of Bridges Subjected to Linear Induction Motor Train Load |
| title_fullStr | Dynamic Factor of Bridges Subjected to Linear Induction Motor Train Load |
| title_full_unstemmed | Dynamic Factor of Bridges Subjected to Linear Induction Motor Train Load |
| title_short | Dynamic Factor of Bridges Subjected to Linear Induction Motor Train Load |
| title_sort | dynamic factor of bridges subjected to linear induction motor train load |
| topic | linear induction motor (lim) elevated bridge train interaction dynamic factor (df) electromagnetic force |
| url | https://bjrbe-journals.rtu.lv/article/view/3753 |
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