爆炸冲击下水底隧道的动态响应及毁伤模式研究

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (4) : 150-158.

论文

杨广栋1,2，王高辉2，李麒3，陆春华4，卢文波2，周俊汝2，赵金帅4

作者信息 +

Dynamic response and damage patterns of underwater tunnel subjected to blast loads

YANG Guangdong1,2,WANG Gaohui2,LI Qi3,LU Chunhua4,LU Wenbo2,ZHOU Junru2,ZHAO Jinshuai4

Author information +

文章历史 +

摘要

考虑炸药起爆、冲击波传播、冲击波与结构的相互作用以及结构的动态响应等复杂过程，基于Lagrange-Euler耦合算法，建立了水底隧道水下爆炸的全耦合数值仿真模型。通过与爆炸试验结果进行对比，验证了数值模型的可靠性；研究了水下爆炸冲击荷载作用下的水底隧道的毁伤破坏过程、空间分布规律及破坏模式。结果表明：水底隧道的破坏模式不仅与隧道自身的动力特性有关，还取决于起爆距离及炸药当量等；隧道可能的破坏模式为局部冲切或剥落破坏、弯曲破坏伴随着局部剥落破坏以及整体弯曲破坏。

Abstract

A fully coupled numerical model of an underwater tunnel, considering complex processes such as explosive initiation, shock wave propagation, shock wave and structure interaction, and structural response, is established based on the Lagrange-Euler coupling algorithm. The reliability of the numerical model is verified against the experimental data. The damage process, damage characteristics and failure patterns of the underwater tunnel subjected to blast loads are studied. The results show that the failure mode of the tunnel is not only related to the dynamic characteristics of the tunnel itself, but also depends on the detonation distance and explosive equivalent; the potential failure modes of the tunnel are local punching or spall failure, bending failure accompanied by local spall damage and global bending failure.

导出引用

杨广栋1,2，王高辉2，李麒3，陆春华4，卢文波2，周俊汝2，赵金帅4. 爆炸冲击下水底隧道的动态响应及毁伤模式研究[J]. 振动与冲击, 2022, 41(4): 150-158

YANG Guangdong1,2,WANG Gaohui2,LI Qi3,LU Chunhua4,LU Wenbo2,ZHOU Junru2,ZHAO Jinshuai4. Dynamic response and damage patterns of underwater tunnel subjected to blast loads[J]. Journal of Vibration and Shock, 2022, 41(4): 150-158

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