Influence of Foam Liner on Tunnels Subjected to Internal Blast Loading

摘要

The tunnels face terrorist attacks which will cause huge economic and social losses. To study the influence of geofoam liner on circular cast-iron tunnels in saturated soil subjected to internal blast loading, a new approach was introduced to simulate blast loading with LS-DYNA. The results showed that the geofoam liner could reduce the damage and provide protections to the lining due to small blast loading. Geofoam liner could be used as an effective mitigation method for tunnels.