Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration Load
This study presents an improved constitutive model for concrete under uniaxial cyclic loading which considers the fatigue stiffness degradation, fatigue strength degradation, and fatigue residual strain increment of concrete fatigue damage. According to the constitutive model, the dynamic response a...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/9525680 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832552253434626048 |
|---|---|
| author | Qixiang Yan Hang Chen Wenyu Chen Junchen Zhang Shuqi Ma Xi Huang |
| author_facet | Qixiang Yan Hang Chen Wenyu Chen Junchen Zhang Shuqi Ma Xi Huang |
| author_sort | Qixiang Yan |
| collection | DOAJ |
| description | This study presents an improved constitutive model for concrete under uniaxial cyclic loading which considers the fatigue stiffness degradation, fatigue strength degradation, and fatigue residual strain increment of concrete fatigue damage. According to the constitutive model, the dynamic response and cumulative damage of the tunnel cross structure under various train operation years were analyzed. The results show that the vibration in the middle of the main tunnel is most violent. With the increase of train operation period, the acceleration in the middle of the transverse passage floor, both sides of the wall corner and the vault increase significantly, and the maximum principal stress increases significantly only in both sides of the wall corner. The compressive damage is mainly distributed at both sides of the wall corner, while tensile damage is distributed in both sides of the inner wall corner. The accumulative damage of the cross structure exhibits a two-stage profile. The size and range of accumulative tensile damage of the connecting transverse passage are greater than those of accumulative compressive damage. |
| format | Article |
| id | doaj-art-c4300cff1391461a8f8c1b74c6b2f5a8 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-c4300cff1391461a8f8c1b74c6b2f5a82025-02-03T05:59:13ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/95256809525680Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration LoadQixiang Yan0Hang Chen1Wenyu Chen2Junchen Zhang3Shuqi Ma4Xi Huang5Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaChengdu Survey, Design and Research Co. Ltd., Chengdu 610031, ChinaThis study presents an improved constitutive model for concrete under uniaxial cyclic loading which considers the fatigue stiffness degradation, fatigue strength degradation, and fatigue residual strain increment of concrete fatigue damage. According to the constitutive model, the dynamic response and cumulative damage of the tunnel cross structure under various train operation years were analyzed. The results show that the vibration in the middle of the main tunnel is most violent. With the increase of train operation period, the acceleration in the middle of the transverse passage floor, both sides of the wall corner and the vault increase significantly, and the maximum principal stress increases significantly only in both sides of the wall corner. The compressive damage is mainly distributed at both sides of the wall corner, while tensile damage is distributed in both sides of the inner wall corner. The accumulative damage of the cross structure exhibits a two-stage profile. The size and range of accumulative tensile damage of the connecting transverse passage are greater than those of accumulative compressive damage.http://dx.doi.org/10.1155/2018/9525680 |
| spellingShingle | Qixiang Yan Hang Chen Wenyu Chen Junchen Zhang Shuqi Ma Xi Huang Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration Load Shock and Vibration |
| title | Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration Load |
| title_full | Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration Load |
| title_fullStr | Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration Load |
| title_full_unstemmed | Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration Load |
| title_short | Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration Load |
| title_sort | dynamic characteristic and fatigue accumulative damage of a cross shield tunnel structure under vibration load |
| url | http://dx.doi.org/10.1155/2018/9525680 |
| work_keys_str_mv | AT qixiangyan dynamiccharacteristicandfatigueaccumulativedamageofacrossshieldtunnelstructureundervibrationload AT hangchen dynamiccharacteristicandfatigueaccumulativedamageofacrossshieldtunnelstructureundervibrationload AT wenyuchen dynamiccharacteristicandfatigueaccumulativedamageofacrossshieldtunnelstructureundervibrationload AT junchenzhang dynamiccharacteristicandfatigueaccumulativedamageofacrossshieldtunnelstructureundervibrationload AT shuqima dynamiccharacteristicandfatigueaccumulativedamageofacrossshieldtunnelstructureundervibrationload AT xihuang dynamiccharacteristicandfatigueaccumulativedamageofacrossshieldtunnelstructureundervibrationload |