不同结构类型棚洞的抗冲击性能研究

张群利;;王全才;吴清;郭绍平;

振动与冲击 ›› 2015, Vol. 34 ›› Issue (3) : 72-76.

PDF(2136 KB)
PDF(2136 KB)
振动与冲击 ›› 2015, Vol. 34 ›› Issue (3) : 72-76.
论文

不同结构类型棚洞的抗冲击性能研究

  • 张群利1,2,3,王全才1,2,吴清4,郭绍平1,2,3
作者信息 +

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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摘要

借助ANSYS/LS-DYNA有限元软件模拟棚洞结构在落石冲击荷载下的动力响应过程,通过分析比较5类棚洞结构的受力与变形的特征,研究不同结构类型的抗冲击性能。研究表明:不同结构类型棚洞在同等冲击作用下会有不同的动力响应,全拱式和半拱式棚洞的抗冲击性能比门式有优势,斜柱式比直柱式抗冲击性能好;门式和半拱式棚洞的柱体顶部内侧与顶板交接处,全拱式棚洞的拱柱底部是最大等效应力的集中部位,实际工程中可采取局部加强措施,保证结构的安全性。

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.

关键词

棚洞结构 / 落石 / 数值分析 / 冲击响应

Key words

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

引用本文

导出引用
张群利;;王全才;吴清;郭绍平;. 不同结构类型棚洞的抗冲击性能研究[J]. 振动与冲击, 2015, 34(3): 72-76
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

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