Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Impact & Dynamics Vol. 15, No. 55 (2021)

Numerical analysis of underground tunnels subjected to surface blast loads

Author and affiliation details
  • Mahmoud Nawar Corresponding author Zagazig University, Department of Structural Engineering, Egypt mn6w8@mail.missouri.edu
  • Alaa Ata University of Hertfordshire-Hosted by GAF, School of Engineering and Computer Science, Egypt.
  • Marwa Nabil Zagazig University, Department of Structural Engineering, Egypt
  • Sally Hassan Zagazig University, Department of Structural Engineering, Egypt
DOI
10.3221/IGF-ESIS.55.12
Pages
159-173
Published
Licence
CC BY 4.0
Published inVol. 15, No. 55 (2021)Go to the issue

Abstract

The increased terrorist attacks on important public structures and utilities have raised the vital necessity for the investigation of performance of structures under blast loads to improve the design and enhance the behavior of structures subjected to such threats. In this study, 3-D finite element analysis is used to study the effect of surface explosions on the response of RC bored tunnels. The soil behavior is modelled using Drucker-Prager Cap model. Two types of soil are investigated, and the blast load is considered through various weights of TNT explosive charges at heights of 0.50 m and 1.0 m from ground surface. To study the effect of horizontal standoff distance, six different horizontal distances are considered. The results show that the soil type has a significance effect on tunnel response due to surface blasts. Also the weight and the location of charge have a great effect on the safety of the tunnel. Finally, a parametric study is established to define the borders of the restricted area around the tunnel location to be safe.

Keywords

Article history

  1. ReceivedUntil the next stage: 90 days
  2. Revision requestedUntil the next stage: 11 days
  3. RevisedUntil the next stage: 7 days
  4. AcceptedUntil the next stage: 24 days
  5. Published

How to cite

APA

Nawar, M., Ata, A., Nabil, M., & Hassan, S. (2020). Numerical analysis of underground tunnels subjected to surface blast loads. Fracture and Structural Integrity, 15(55), 159–173. https://doi.org/10.3221/IGF-ESIS.55.12

IEEE

M. Nawar, A. Ata, M. Nabil, and S. Hassan, “Numerical analysis of underground tunnels subjected to surface blast loads,” Fracture and Structural Integrity, vol. 15, no. 55, pp. 159–173, 2020, doi: 10.3221/IGF-ESIS.55.12.

MLA

Nawar, Mahmoud, et al. “Numerical analysis of underground tunnels subjected to surface blast loads.” Fracture and Structural Integrity, vol. 15, no. 55, 2020, pp. 159–173. https://doi.org/10.3221/IGF-ESIS.55.12.

Chicago

Nawar, Mahmoud, Alaa Ata, Marwa Nabil, and Sally Hassan. 2020. “Numerical analysis of underground tunnels subjected to surface blast loads.” Fracture and Structural Integrity 15 (55): 159–173. https://doi.org/10.3221/IGF-ESIS.55.12.

Harvard

Nawar, M., Ata, A., Nabil, M. and Hassan, S. (2020) ‘Numerical analysis of underground tunnels subjected to surface blast loads’, Fracture and Structural Integrity, 15(55), pp. 159–173. doi: 10.3221/IGF-ESIS.55.12.

Vancouver

Nawar M, Ata A, Nabil M, Hassan S. Numerical analysis of underground tunnels subjected to surface blast loads. Fracture and Structural Integrity. 2020;15(55):159-173. doi:10.3221/IGF-ESIS.55.12

BibTeX

@article{nawar2020, author = {Nawar, Mahmoud and Ata, Alaa and Nabil, Marwa and Hassan, Sally}, title = {Numerical analysis of underground tunnels subjected to surface blast loads}, journal = {Fracture and Structural Integrity}, year = {2020}, volume = {15}, number = {55}, pages = {159--173}, doi = {10.3221/IGF-ESIS.55.12}, url = {https://doi.org/10.3221/IGF-ESIS.55.12}, issn = {1971-8993} }

RIS

TY - JOUR AU - Nawar, Mahmoud AU - Ata, Alaa AU - Nabil, Marwa AU - Hassan, Sally TI - Numerical analysis of underground tunnels subjected to surface blast loads JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2020 DA - 2020/12/28 VL - 15 IS - 55 SP - 159 EP - 173 DO - 10.3221/IGF-ESIS.55.12 UR - https://doi.org/10.3221/IGF-ESIS.55.12 SN - 1971-8993 ER -

Licence

Creative Commons Attribution 4.0 International

May be shared and adapted, provided appropriate credit is given. Copyright © 2020 Mahmoud Nawar, Alaa Ata, Marwa Nabil, Sally Hassan.

Copyright 
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.  

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