Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias Tunnel
The structural damage of the lining structure at the entrance of a tunnel is the most common instability problem. The instability problem may cause dynamic effects such as earthquakes and blasting. Based on the seismic damage data collected from previous major earthquakes at the entrance of shallow-...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/8930560 |
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| _version_ | 1832560918753443840 |
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| author | Lin Li Xiaodan Guo Zuyin Zou Zhanyuan Zhu Zihong Guo Weimin Xiao Deping Guo |
| author_facet | Lin Li Xiaodan Guo Zuyin Zou Zhanyuan Zhu Zihong Guo Weimin Xiao Deping Guo |
| author_sort | Lin Li |
| collection | DOAJ |
| description | The structural damage of the lining structure at the entrance of a tunnel is the most common instability problem. The instability problem may cause dynamic effects such as earthquakes and blasting. Based on the seismic damage data collected from previous major earthquakes at the entrance of shallow-buried tunnel, the shaking table test and numerical simulation are used to analyze dynamic response characteristics and damage evolution characteristics of the tunnel in the shallow-buried hole at 30°. The study revealed the stress characteristics of tunnel lining and the mechanism of structural damage under earthquake excitation. The research results show that the biased tunnel (30°) is susceptible to damage on the unsymmetrical loading side, the biased ground surface leads to acceleration, and high speed also significantly increases the effect. The biased side leg of the tunnel lining cross section is a location with a large internal force distribution. The biased tunnel has a relatively unfavorable internal force value distribution and a larger peak, and the peak at the larger bias side has the largest peak value. The skewback and spandrel portion of the biased tunnel lining load are more likely to be damaged. |
| format | Article |
| id | doaj-art-02bdd6db55c84a408c7de4f74d995913 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-02bdd6db55c84a408c7de4f74d9959132025-02-03T01:26:23ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/89305608930560Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias TunnelLin Li0Xiaodan Guo1Zuyin Zou2Zhanyuan Zhu3Zihong Guo4Weimin Xiao5Deping Guo6School of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, ChinaSchool of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, ChinaSchool of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, ChinaSchool of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, ChinaSchool of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, ChinaSchool of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, ChinaSichuan Railway Investment Group Co., Ltd., Chengdu 610094, ChinaThe structural damage of the lining structure at the entrance of a tunnel is the most common instability problem. The instability problem may cause dynamic effects such as earthquakes and blasting. Based on the seismic damage data collected from previous major earthquakes at the entrance of shallow-buried tunnel, the shaking table test and numerical simulation are used to analyze dynamic response characteristics and damage evolution characteristics of the tunnel in the shallow-buried hole at 30°. The study revealed the stress characteristics of tunnel lining and the mechanism of structural damage under earthquake excitation. The research results show that the biased tunnel (30°) is susceptible to damage on the unsymmetrical loading side, the biased ground surface leads to acceleration, and high speed also significantly increases the effect. The biased side leg of the tunnel lining cross section is a location with a large internal force distribution. The biased tunnel has a relatively unfavorable internal force value distribution and a larger peak, and the peak at the larger bias side has the largest peak value. The skewback and spandrel portion of the biased tunnel lining load are more likely to be damaged.http://dx.doi.org/10.1155/2021/8930560 |
| spellingShingle | Lin Li Xiaodan Guo Zuyin Zou Zhanyuan Zhu Zihong Guo Weimin Xiao Deping Guo Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias Tunnel Shock and Vibration |
| title | Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias Tunnel |
| title_full | Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias Tunnel |
| title_fullStr | Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias Tunnel |
| title_full_unstemmed | Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias Tunnel |
| title_short | Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias Tunnel |
| title_sort | study on dynamic response characteristics and damage mechanism of tunnel lining at entrance of shallow bias tunnel |
| url | http://dx.doi.org/10.1155/2021/8930560 |
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