摘要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.
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.
基金资助: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)
通讯作者:
HU Jun,E-mail address:jhu0805@163.com
E-mail: jhu0805@163.com
引用本文:
胡俊, 王平. 含EPS颗粒夹层的隧道结构抗爆性能有限元分析[J]. Journal of Highway and Transportation Research and Development, 2016, 10(2): 53-58.
HU Jun, WANG Ping. Element Analysis of Tunnel Structure with EPS Granule Layers Subjected to Blast Load. Journal of Highway and Transportation Research and Development, 2016, 10(2): 53-58.
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2016, Vol. 10 
