Proceedings of the 2024 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)

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Explosion Dynamic Response Analysis of Loess Double-Line Tunnel Considering Ground Stress

Authors
Nan Wang1, Xiaoping Cao1, *
1School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
*Corresponding author. Email: caoxp@mail.lzjtu.cn
Corresponding Author
Xiaoping Cao
Available Online 31 January 2025.
DOI
10.2991/978-94-6463-650-5_22How to use a DOI?
Keywords
Euler-Lagrange coupling; Explosive impact; Numerical simulation
Abstract

Based on the coupled Euler-Lagrange (CEL) algorithm, the numerical simulation model of free air field and small clear distance two-line tunnel explosion in loess is established. The reliability of the numerical model is verified by the comparison between the air-field air explosion and the traditional empirical formula. The results show that when the scale distance is greater than 0.3m/kg1/3, the numerical simulation results agree well with the empirical formula. When CEL explodes, measuring points are arranged at the invert, soffit and arch of the tunnel, and the speed, acceleration and stress quickly reach the peak and constantly oscillate, and the attenuation speed is rapid and the attenuation degree is fast. When CEL explodes at the arch, the effect of shock wave is very weak, and the measuring point closest to the explosion source has the most obvious response, and the stress concentration is relatively obvious at the arch Angle.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2024 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)
Series
Advances in Engineering Research
Publication Date
31 January 2025
ISBN
978-94-6463-650-5
ISSN
2352-5401
DOI
10.2991/978-94-6463-650-5_22How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Nan Wang
AU  - Xiaoping Cao
PY  - 2025
DA  - 2025/01/31
TI  - Explosion Dynamic Response Analysis of Loess Double-Line Tunnel Considering Ground Stress
BT  - Proceedings of the 2024 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)
PB  - Atlantis Press
SP  - 216
EP  - 222
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-650-5_22
DO  - 10.2991/978-94-6463-650-5_22
ID  - Wang2025
ER  -