Vibration Response Characteristics of the Cross Tunnel Structure
It is well known that the tunnel structure will lose its function under the long-term repeated function of the vibration effect. A prime example is the Xi’an cross tunnel structure (CTS) of Metro Line 2 and the Yongningmen tunnel, where the vibration response of the tunnel vehicle load and metro tra...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/9524206 |
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| _version_ | 1850225474707390464 |
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| author | Jinxing Lai Kaiyun Wang Junling Qiu Fangyuan Niu Junbao Wang Jianxun Chen |
| author_facet | Jinxing Lai Kaiyun Wang Junling Qiu Fangyuan Niu Junbao Wang Jianxun Chen |
| author_sort | Jinxing Lai |
| collection | DOAJ |
| description | It is well known that the tunnel structure will lose its function under the long-term repeated function of the vibration effect. A prime example is the Xi’an cross tunnel structure (CTS) of Metro Line 2 and the Yongningmen tunnel, where the vibration response of the tunnel vehicle load and metro train load to the structure of shield tunnel was analyzed by applying the three-dimensional (3D) dynamic finite element model. The effect of the train running was simulated by applying the time-history curves of vibration force of the track induced by wheel axles, using the fitted formulas for vehicle and train vibration load. The characteristics and the spreading rules of vibration response of metro tunnel structure were researched from the perspectives of acceleration, velocity, displacement, and stress. It was found that vehicle load only affects the metro tunnel within 14 m from the centre, and the influence decreases gradually from vault to spandrel, haunch, and springing. The high-speed driving effect of the train can be divided into the close period, the rising period, the stable period, the declining period, and the leaving period. The stress at haunch should be carefully considered. The research results presented for this case study provide theoretical support for the safety of vibration response of Metro Line 2 structure. |
| format | Article |
| id | doaj-art-589f4e0f2c674a10bc0b08fe5f347da2 |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-589f4e0f2c674a10bc0b08fe5f347da22025-08-20T02:05:20ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/95242069524206Vibration Response Characteristics of the Cross Tunnel StructureJinxing Lai0Kaiyun Wang1Junling Qiu2Fangyuan Niu3Junbao Wang4Jianxun Chen5Shaanxi Provincial Major Laboratory for Highway Bridge & Tunnel, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaShaanxi Provincial Major Laboratory for Highway Bridge & Tunnel, Chang’an University, Xi’an 710064, ChinaIt is well known that the tunnel structure will lose its function under the long-term repeated function of the vibration effect. A prime example is the Xi’an cross tunnel structure (CTS) of Metro Line 2 and the Yongningmen tunnel, where the vibration response of the tunnel vehicle load and metro train load to the structure of shield tunnel was analyzed by applying the three-dimensional (3D) dynamic finite element model. The effect of the train running was simulated by applying the time-history curves of vibration force of the track induced by wheel axles, using the fitted formulas for vehicle and train vibration load. The characteristics and the spreading rules of vibration response of metro tunnel structure were researched from the perspectives of acceleration, velocity, displacement, and stress. It was found that vehicle load only affects the metro tunnel within 14 m from the centre, and the influence decreases gradually from vault to spandrel, haunch, and springing. The high-speed driving effect of the train can be divided into the close period, the rising period, the stable period, the declining period, and the leaving period. The stress at haunch should be carefully considered. The research results presented for this case study provide theoretical support for the safety of vibration response of Metro Line 2 structure.http://dx.doi.org/10.1155/2016/9524206 |
| spellingShingle | Jinxing Lai Kaiyun Wang Junling Qiu Fangyuan Niu Junbao Wang Jianxun Chen Vibration Response Characteristics of the Cross Tunnel Structure Shock and Vibration |
| title | Vibration Response Characteristics of the Cross Tunnel Structure |
| title_full | Vibration Response Characteristics of the Cross Tunnel Structure |
| title_fullStr | Vibration Response Characteristics of the Cross Tunnel Structure |
| title_full_unstemmed | Vibration Response Characteristics of the Cross Tunnel Structure |
| title_short | Vibration Response Characteristics of the Cross Tunnel Structure |
| title_sort | vibration response characteristics of the cross tunnel structure |
| url | http://dx.doi.org/10.1155/2016/9524206 |
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