Numerical Analysis of Missile‐Induced Blast Hazards on Cut‐and‐Cover Tunnels and Their Structural Resilience.
Saved in:
| Title: | Numerical Analysis of Missile‐Induced Blast Hazards on Cut‐and‐Cover Tunnels and Their Structural Resilience. |
|---|---|
| Authors: | Alsabhan, Abdullah H.1 (AUTHOR), Rais, Ibraheem2 (AUTHOR), Gebremariam, Aklilu Shitu3 (AUTHOR) aklilu.shitu@aastu.edu.et, Sadique, Md. Rehan2 (AUTHOR), Alam, Shamshad1 (AUTHOR), Qadri, Jibran4 (AUTHOR), Binwal, Shikha (AUTHOR) sbinwal@wiley.com |
| Source: | Advances in Civil Engineering. 7/1/2026, Vol. 2026, p1-21. 21p. |
| Subjects: | Fiber-reinforced concrete, Finite element method, Building material durability, Energy dissipation, Guided missiles, Tunnel design & construction |
| Abstract: | This study investigates the dynamic response of cut‐and‐cover tunnels embedded in soil subjected to missile‐induced blasts at varying detonation points. Finite element simulations were performed using the concrete damage plasticity (CDP) model for concrete (M30 and M50) and steel–fiber‐reinforced concrete (SFRC), the Drucker–Prager model for soil, and the Johnson–Cook (J–C) model for reinforcement steel, aluminum 2024‐T3, and mild steel. Numerical results reveal that direct detonation at the tunnel surface leads to a 22.6% increase in stress and a 68.0% increase in displacement compared to detonation at the soil surface. To investigate potential mitigation measures, two strategies were evaluated: (1) replacing normal‐strength concrete tunnel liners with high‐strength concrete (M50) and SFRC and (2) incorporating a 3 mm thin sheet of energy‐absorbing materials such as aluminum 2024‐T3 and mild steel above the tunnel liner. The results indicate that replacing M30 concrete with M50 concrete reduces stress by 7.1%, while SFRC further decreases stress by 23.4% when detonation occurs directly at the tunnel liner. The inclusion of an aluminum 2024‐T3 and mild steel sheet leads to 34.1% and 48.3% reductions in displacement, respectively. Additionally, tensile damage was significantly reduced, with SFRC exhibiting the lowest level of tensile damage, while mild steel achieved the greatest stress reduction, decreasing stress by 55.1% compared with the unprotected tunnel liner. The findings provide engineering insights into the vulnerability of cut‐and‐cover tunnels subjected to missile‐induced blast loading and demonstrate the relative effectiveness of different mitigation strategies. These results may support future development of protective measures and more resilient underground infrastructure subjected to extreme loading conditions. [ABSTRACT FROM AUTHOR] |
| Copyright of Advances in Civil Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | This study investigates the dynamic response of cut‐and‐cover tunnels embedded in soil subjected to missile‐induced blasts at varying detonation points. Finite element simulations were performed using the concrete damage plasticity (CDP) model for concrete (M30 and M50) and steel–fiber‐reinforced concrete (SFRC), the Drucker–Prager model for soil, and the Johnson–Cook (J–C) model for reinforcement steel, aluminum 2024‐T3, and mild steel. Numerical results reveal that direct detonation at the tunnel surface leads to a 22.6% increase in stress and a 68.0% increase in displacement compared to detonation at the soil surface. To investigate potential mitigation measures, two strategies were evaluated: (1) replacing normal‐strength concrete tunnel liners with high‐strength concrete (M50) and SFRC and (2) incorporating a 3 mm thin sheet of energy‐absorbing materials such as aluminum 2024‐T3 and mild steel above the tunnel liner. The results indicate that replacing M30 concrete with M50 concrete reduces stress by 7.1%, while SFRC further decreases stress by 23.4% when detonation occurs directly at the tunnel liner. The inclusion of an aluminum 2024‐T3 and mild steel sheet leads to 34.1% and 48.3% reductions in displacement, respectively. Additionally, tensile damage was significantly reduced, with SFRC exhibiting the lowest level of tensile damage, while mild steel achieved the greatest stress reduction, decreasing stress by 55.1% compared with the unprotected tunnel liner. The findings provide engineering insights into the vulnerability of cut‐and‐cover tunnels subjected to missile‐induced blast loading and demonstrate the relative effectiveness of different mitigation strategies. These results may support future development of protective measures and more resilient underground infrastructure subjected to extreme loading conditions. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 16878086 |
| DOI: | 10.1155/adce/8223452 |
