| Autor: |
Mussa, Mohamed H., Alhabeeb, S. A., Abdulameer, Marwan H., Abdulhadi, Ahmed M., Al-Mamoori, Dalya H. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2806 Issue 1, p1-11, 11p |
| Abstrakt: |
Tunnels are complex structures and their damage may cause severe damage in losses in lives. Currently, detonations by vehicles are commonly utilized by terrorists to achieve a massive and destructive blast. Therefore, a numerical study is intended to discover the performance of the tunnel under a surface of 4ton TNT charge weight by using LS-DYNA software. For a real scenario, an experimental impact test via Split Hopkinson Pressure Bar (SHPB) is adopted to explore the properties of the concrete material that is used in the modelling of the tunnel lining. The results indicated that the tunnel roof is the most damaged part at a burial depth of 3 m, whereas it was safe when the burial depth is increased to 6 and 10 m. In addition, the mechanism of shock waves revealed that the roof suffered from intense explosion pressure at depth 3m within greater velocity 244.15 and 480.62 % than at depths 6 and 8 m, respectively. This appeared the important role of burial depth to reduce the velocity and reflected the pressure of tunnel roof centre and increases the tunnel resistance against blast loads. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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