Test and damage assessment of shallow buried RC tunnel under explosion
As a major element of the transportation network, tunnels are unavoidably threatened by accidental loads such as vehicle bombs and tank truck explosions. The goal of this research is to explore the dynamic characteristics and damage assessment of tunnel structures under contact blast loads. First, t...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2024-02-01
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| Series: | Underground Space |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2467967423000892 |
| _version_ | 1797391809700167680 |
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| author | Longyun Zhou Xiaojun Li Qiushi Yan Shutao Li Song Chang Pengcheng Ren |
| author_facet | Longyun Zhou Xiaojun Li Qiushi Yan Shutao Li Song Chang Pengcheng Ren |
| author_sort | Longyun Zhou |
| collection | DOAJ |
| description | As a major element of the transportation network, tunnels are unavoidably threatened by accidental loads such as vehicle bombs and tank truck explosions. The goal of this research is to explore the dynamic characteristics and damage assessment of tunnel structures under contact blast loads. First, three scaled-down reinforced concrete tunnel models were made, and the explosion test and static loading test were carried out successively to evaluate the axial residual bearing capacity, axial displacement and failure mechanism of the tunnel. Secondly, the finite element model is built by utilizing LS-DYNA, and the reliability of the finite element method is confirmed by comparing the data of the explosion test with the static loading test. At the same time, the calculation method for damage coefficient and the classification criteria for damage grade based on axial residual bearing capacity are presented. Then, based on the finite element method, the propagation process of the explosion shock wave in the tunnel and the damage mechanism of the tunnel are investigated. Finally, seven explosion scenarios are developed, the damage degree of these seven tunnels under the blast load is quantitatively analyzed, and further anti-blast design ideas are put forth. The study in this article may give an intended reference for the damage assessment, anti-explosion design and strengthening work of reinforced concrete tunnels. |
| first_indexed | 2024-03-08T23:38:05Z |
| format | Article |
| id | doaj.art-bf3ff4fc10004e93a3822c9c2393bed3 |
| institution | Directory Open Access Journal |
| issn | 2467-9674 |
| language | English |
| last_indexed | 2024-03-08T23:38:05Z |
| publishDate | 2024-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Underground Space |
| spelling | doaj.art-bf3ff4fc10004e93a3822c9c2393bed32023-12-14T05:23:24ZengKeAi Communications Co., Ltd.Underground Space2467-96742024-02-0114118137Test and damage assessment of shallow buried RC tunnel under explosionLongyun Zhou0Xiaojun Li1Qiushi Yan2Shutao Li3Song Chang4Pengcheng Ren5Beijing University of Technology, Beijing 100124, China; Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing 100124, ChinaBeijing University of Technology, Beijing 100124, China; Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing 100124, ChinaBeijing University of Technology, Beijing 100124, China; Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing 100124, China; Corresponding author at: Beijing University of Technology, Beijing 100124, China.Department of Civil Engineering, Tsinghua University, Beijing 100084, China; Research Institute for National Defense Engineering of AMS, PLA, Beijing 100036, ChinaBeijing University of Technology, Beijing 100124, China; Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing 100124, ChinaBeijing University of Technology, Beijing 100124, China; Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing 100124, ChinaAs a major element of the transportation network, tunnels are unavoidably threatened by accidental loads such as vehicle bombs and tank truck explosions. The goal of this research is to explore the dynamic characteristics and damage assessment of tunnel structures under contact blast loads. First, three scaled-down reinforced concrete tunnel models were made, and the explosion test and static loading test were carried out successively to evaluate the axial residual bearing capacity, axial displacement and failure mechanism of the tunnel. Secondly, the finite element model is built by utilizing LS-DYNA, and the reliability of the finite element method is confirmed by comparing the data of the explosion test with the static loading test. At the same time, the calculation method for damage coefficient and the classification criteria for damage grade based on axial residual bearing capacity are presented. Then, based on the finite element method, the propagation process of the explosion shock wave in the tunnel and the damage mechanism of the tunnel are investigated. Finally, seven explosion scenarios are developed, the damage degree of these seven tunnels under the blast load is quantitatively analyzed, and further anti-blast design ideas are put forth. The study in this article may give an intended reference for the damage assessment, anti-explosion design and strengthening work of reinforced concrete tunnels.http://www.sciencedirect.com/science/article/pii/S2467967423000892Shallow buried tunnelBlast locationBlast resistanceAxial residual bearing capacityDamage assessment |
| spellingShingle | Longyun Zhou Xiaojun Li Qiushi Yan Shutao Li Song Chang Pengcheng Ren Test and damage assessment of shallow buried RC tunnel under explosion Underground Space Shallow buried tunnel Blast location Blast resistance Axial residual bearing capacity Damage assessment |
| title | Test and damage assessment of shallow buried RC tunnel under explosion |
| title_full | Test and damage assessment of shallow buried RC tunnel under explosion |
| title_fullStr | Test and damage assessment of shallow buried RC tunnel under explosion |
| title_full_unstemmed | Test and damage assessment of shallow buried RC tunnel under explosion |
| title_short | Test and damage assessment of shallow buried RC tunnel under explosion |
| title_sort | test and damage assessment of shallow buried rc tunnel under explosion |
| topic | Shallow buried tunnel Blast location Blast resistance Axial residual bearing capacity Damage assessment |
| url | http://www.sciencedirect.com/science/article/pii/S2467967423000892 |
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