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| Element Analysis of Tunnel Structure with EPS Granule Layers Subjected to Blast Load |
| HU Jun, WANG Ping |
| School of Civil Engineering, Anhui Jianzhu University, Hefei Anhui, China |
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Abstract 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 attenuationof 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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Received: 28 September 2015
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| Fund:Supported by the Anhui Provincial Natural Science Research Project (No.KJ2013A068);the National Nature Science Foundation of China (No.51478002);and the PhD Early Development Program of Anhui Jiangzhu University (No.20130103) |
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Corresponding Authors:
HU Jun,E-mail address:jhu0805@163.com
E-mail: jhu0805@163.com
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2016, Vol. 10 
