Element Analysis of Tunnel Structure with EPS Granule Layers Subjected to Blast Load

Blasting load is investigated using LS-DYNA software for the tunnel structure with different densities of expanded polystyrene (EPS) granule layers. Analysis of different points of pressure shows that the presence of EPS granule layers has beneficial effects on the attenuation of the stress wave, and the pressure decay exponent increases with the increase in particle density. In addition, the presence of EPS granule layers can reduce the tensile stress caused by the impact of the free surface of the tunnel. A mathematical model of the pressure attenuation index relative to EPS grain density and relative distance is established.

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  • English

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  • Accession Number: 01609798
  • Record Type: Publication
  • Files: TRIS, ASCE
  • Created Date: Aug 10 2016 3:03PM