Wind Tunnel Measurements for Flutter of a Long-Afterbody Bridge Deck
Bridges are an important component of transportation. Flutter is a self-excited, large amplitude vibration, which may lead to collapse of bridges. It must be understood and avoided. This paper takes the Jianghai Channel Bridge, which is a significant part of the Hong Kong-Zhuhai-Macao Bridge, as an...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2017-02-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/17/2/335 |
| _version_ | 1811186180245422080 |
|---|---|
| author | Zeng-Shun Chen Cheng Zhang Xu Wang Cun-Ming Ma |
| author_facet | Zeng-Shun Chen Cheng Zhang Xu Wang Cun-Ming Ma |
| author_sort | Zeng-Shun Chen |
| collection | DOAJ |
| description | Bridges are an important component of transportation. Flutter is a self-excited, large amplitude vibration, which may lead to collapse of bridges. It must be understood and avoided. This paper takes the Jianghai Channel Bridge, which is a significant part of the Hong Kong-Zhuhai-Macao Bridge, as an example to investigate the flutter of the bridge deck. Firstly, aerodynamic force models for flutter of bridges were introduced. Then, wind tunnel tests of the bridge deck during the construction and the operation stages, under different wind attack angles and wind velocities, were carried out using a high frequency base balance (HFBB) system and laser displacement sensors. From the tests, the static aerodynamic forces and flutter derivatives of the bridge deck were observed. Correspondingly, the critical flutter wind speeds of the bridge deck were determined based on the derivatives, and they are compared with the directly measured flutter speeds. Results show that the observed derivatives are reasonable and applicable. Furthermore, the critical wind speeds in the operation stage is smaller than those in the construction stage. Besides, the flutter instabilities of the bridge in the construction and the operation stages are good. This study helps guarantee the design and the construction of the Jianghai Channel Bridge, and advances the understanding of flutter of long afterbody bridge decks. |
| first_indexed | 2024-04-11T13:41:25Z |
| format | Article |
| id | doaj.art-efb653fff18d49caa83f024a2daf24be |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:41:25Z |
| publishDate | 2017-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-efb653fff18d49caa83f024a2daf24be2022-12-22T04:21:14ZengMDPI AGSensors1424-82202017-02-0117233510.3390/s17020335s17020335Wind Tunnel Measurements for Flutter of a Long-Afterbody Bridge DeckZeng-Shun Chen0Cheng Zhang1Xu Wang2Cun-Ming Ma3State Key Laboratory Breeding Base of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaShenzhen Bridge Design & Research Institute Co., Ltd., Shenzhen 518052, ChinaState Key Laboratory Breeding Base of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaBridges are an important component of transportation. Flutter is a self-excited, large amplitude vibration, which may lead to collapse of bridges. It must be understood and avoided. This paper takes the Jianghai Channel Bridge, which is a significant part of the Hong Kong-Zhuhai-Macao Bridge, as an example to investigate the flutter of the bridge deck. Firstly, aerodynamic force models for flutter of bridges were introduced. Then, wind tunnel tests of the bridge deck during the construction and the operation stages, under different wind attack angles and wind velocities, were carried out using a high frequency base balance (HFBB) system and laser displacement sensors. From the tests, the static aerodynamic forces and flutter derivatives of the bridge deck were observed. Correspondingly, the critical flutter wind speeds of the bridge deck were determined based on the derivatives, and they are compared with the directly measured flutter speeds. Results show that the observed derivatives are reasonable and applicable. Furthermore, the critical wind speeds in the operation stage is smaller than those in the construction stage. Besides, the flutter instabilities of the bridge in the construction and the operation stages are good. This study helps guarantee the design and the construction of the Jianghai Channel Bridge, and advances the understanding of flutter of long afterbody bridge decks.http://www.mdpi.com/1424-8220/17/2/335aerodynamic forceflutter derivativescritical flutter wind speedlong-afterbody bridge deck |
| spellingShingle | Zeng-Shun Chen Cheng Zhang Xu Wang Cun-Ming Ma Wind Tunnel Measurements for Flutter of a Long-Afterbody Bridge Deck Sensors aerodynamic force flutter derivatives critical flutter wind speed long-afterbody bridge deck |
| title | Wind Tunnel Measurements for Flutter of a Long-Afterbody Bridge Deck |
| title_full | Wind Tunnel Measurements for Flutter of a Long-Afterbody Bridge Deck |
| title_fullStr | Wind Tunnel Measurements for Flutter of a Long-Afterbody Bridge Deck |
| title_full_unstemmed | Wind Tunnel Measurements for Flutter of a Long-Afterbody Bridge Deck |
| title_short | Wind Tunnel Measurements for Flutter of a Long-Afterbody Bridge Deck |
| title_sort | wind tunnel measurements for flutter of a long afterbody bridge deck |
| topic | aerodynamic force flutter derivatives critical flutter wind speed long-afterbody bridge deck |
| url | http://www.mdpi.com/1424-8220/17/2/335 |
| work_keys_str_mv | AT zengshunchen windtunnelmeasurementsforflutterofalongafterbodybridgedeck AT chengzhang windtunnelmeasurementsforflutterofalongafterbodybridgedeck AT xuwang windtunnelmeasurementsforflutterofalongafterbodybridgedeck AT cunmingma windtunnelmeasurementsforflutterofalongafterbodybridgedeck |