Study on the Impact Resistance ofDifferent Kinds of Shed-tunnel Structures

Zhang Qunli;;Wang Quancai;Wu Qing;Guo Shaoping;

Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (3) : 72-76.

PDF(2136 KB)
PDF(2136 KB)
Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (3) : 72-76.
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Study on the Impact Resistance ofDifferent Kinds of Shed-tunnel Structures

  • Zhang Qunli1,2,3, Wang Quancai1,2, Wu Qing4, Guo Shaoping1,2,3
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Abstract

In order to explore the rock-fall impact properties of different shed-tunnel structures, five kinds of shed-tunnel structure models were established by finite element method software ANSYS/LS-DYNA. The distribution of force and deformation characteristics was analyzed comparatively. The results showed that the different shed-tunnel structure typespossessed different dynamic response under the same impact load. The comprehensive analysis of effective stress duration curves and roof displacement indicated that the impact resistance of archstyle and semi-arch stylesheds were better than that ofthe gantry ones, and inclined column sheds were better than that of the straight ones. Sections of the maximum equivalent stress showed that dangerous parts of the gantry sheds and semi-arch sheds were at the juncture between the inside of column crown and roof, and that of the arch shed was on thebottom of arch-column, for wheresome reinforcement measures should be adopted in practical projects in order to maintain the safety of shed-tunnel structures.

Key words

shed-tunnel structure / rock-fall / numerical analysis / impulse response

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Zhang Qunli;;Wang Quancai;Wu Qing;Guo Shaoping;. Study on the Impact Resistance ofDifferent Kinds of Shed-tunnel Structures[J]. Journal of Vibration and Shock, 2015, 34(3): 72-76
PDF(2136 KB)

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