爆点深度对桥墩侵爆毁伤的影响规律研究

A Study of the Influence of the Detonation Position on the Penetrating and Blasting Damage to a Bridge Pier

从桥墩抗导弹侵爆研究需求入手,以某桥梁的桥墩作为研究对象,利用ANSYS/AUTODYN仿真软件,探究爆点深度对桥墩侵爆毁伤的影响。结果表明,不同爆点深度条件下相同爆炸荷载对桥墩毁伤效果不同,应对易出现损伤区域进行加固。当桥墩采取防护措施降低爆点深度后,在一定程度上会降低桥墩毁伤。该结果可为桥墩抗打击设计及桥墩建设贯彻国防要求提供参考。

Beginning with the needs of the study of the bridge piers against missile attacks,and taking a pier of a certain bridge as the object of our study,the ANSYS/AUTODYN simulation software is used for exploring the effects of the various detonation positions on the penetration and blasting damage to the bridge pier in the paper.The results show that different detonation positions even with the same blasting load may make a quite different damaging effect on the pier,owing to which the positions that are prone to being damaged should be reinforced. After protective measures are taken to reduce the depth of the detonation position, the damage to the pier will also be reduced to a certain extent. The result of our research may serve as a useful reference for the anti-strike design of bridge piers and the construction of bridge piers in carrying out the requirements in national defense.