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http://dx.doi.org/10.14481/jkges.2020.21.5.23

Dynamic behavior Simulation for Explosion in Two-lane Horseshoe Shaped Tunnel  

Shim, Jaewon (Safety&Disaster Prevention Research Division, Korea Expressway Corporation Research Institute)
Kim, Nagyoung (Planning Coordination Office, Korea Expressway Corporation Research Institute)
Lee, Hyunseong (Korea Expressway Corporation)
Publication Information
Journal of the Korean GEO-environmental Society / v.21, no.5, 2020 , pp. 23-33 More about this Journal
Abstract
As the scale of the economy expands, the number of cases of damage in enclosed spaces such as tunnels is increasing due to the accident of transportation vehicles of dangerous substances such as explosive flammable materials that have increased rapidly. In the case of road tunnels in particular, in the aspect of protection against the long-winding trend and the environment in the downtown area, the number of cases of passing through the downtown area increases, and securing the safety of structures against unexpected extreme disasters such as explosions during tunnel passage is very urgent. For this reason, developed countries are already conducting a review of internal bombardment, but there are almost no evaluation and countermeasures for explosion risk in Korea. Therefore, in this study, in order to evaluate the explosion safety of road tunnels, a boiling liquid explosive explosion (BLEVE), which is considered to have the greatest explosion load among vehicles driving on the road, is set as a reference explosion source, and the equivalent TNT explosion load is used for simulation of the explosion. A method of conversion was presented. In addition, by applying the derived explosion load, dynamic behavior simulation was performed by assuming various variables for the tunnel, and the explosion safety of the tunnel was analyzed.
Keywords
Low explosive; TNT Equivalent weight; Impact load; Blast impulse;
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