PhD of tectonic, Islamic Azad University Science and Research Branch
Abstract
Abstract The Enemy's threats against Islamic country have obliged the military force to regard the importance of underground spaces as safe structures against air strike. These structures are capable of protecting military equipment such as ammunition store and non- military targets like urban tunnel from missile attack. The design of military and non-military infrastructure should have a proper application against natural disaster at peace and war time. There is no written standard in terms of the effect of the projectile blast on structures. So, Numerical modeling is the economical method to be applied as the useful tool in engineering design and analysis. In this study, the effect of main parameters on stability of underground spaces subjected to explosion wave has been considered and suggested the safe design for these structures. In this regard, the influence of the presence and absence of water condition, geometry and dimensions of underground spaces, the tunnel depth, the geomechanical properties of rock mass, stress ratio, the size of crater and the horizontal distance of projectile collision versus amount of peak particle velocity on underground spaces have been taken to account, using FLAC3D software. Then, tagochi design method has been used to assess all mentioned parameters. The results show that, in variance analysis, rock mass classifying and stress ratio have the maximum and minimum effect on underground stability respectively. With regard to input parameters, water was accounted as damper and among the geometries; circle- shaped tunnel is the best shape. The tunnel cross section should be small and optimized. The stability of underground spaces is improved with increasing depth, owing to the better quality of rock mass. The higher crater distance from tunnel and the bigger crater are caused less influence on stability.
Amirkiyaei, V., & Davodi, S. (2021). The Analysis of Effective Parameters on Stability of Tunnels against Shock Wave Loads. Construction science and technology, 2(1), 32-54.
MLA
Vahid Amirkiyaei; Sohrab Davodi. "The Analysis of Effective Parameters on Stability of Tunnels against Shock Wave Loads", Construction science and technology, 2, 1, 2021, 32-54.
HARVARD
Amirkiyaei, V., Davodi, S. (2021). 'The Analysis of Effective Parameters on Stability of Tunnels against Shock Wave Loads', Construction science and technology, 2(1), pp. 32-54.
VANCOUVER
Amirkiyaei, V., Davodi, S. The Analysis of Effective Parameters on Stability of Tunnels against Shock Wave Loads. Construction science and technology, 2021; 2(1): 32-54.
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