爆炸冲击波作用下冰盖结构的动力响应分析

针对冰凌灾害防治中的冰盖结构问题,考虑水下爆破冲击波作用,利用冰体材料抗拉性能差、易折裂的特点,提出了冰盖结构产生动弯曲变形折裂破冰的新思路.采用水下爆破作用下的动力特征研究,建立冰盖板结构动力分析模型,开展了冰盖板结构的动力响应分析.在工程实践中,开展了爆破防凌减灾的试验研究,为进一步的理论研究提供了可靠的数据资料.

Analysis of the Dynamic Response of the Icecap Structure under the Action of Explosion Wave

In this paper, aiming at the problem of the icecap structure appearing in the preventive treatment toward the disaster of ice slush flood, considering the action of the expansion wave under the water surface, a new train of thought is introduced in researching how to make the fracture due to dynamical bending in the icecap structure so as to make it destroyed, in which the weak tensile behav- iour and the characteristic of being easyto be cracked of the ice structure are utilized. In this research, the dynamic character under the action of explosion in the water is adopted, and the model of the icecap plate structure for dynamic analysis is built up for analyzing the dynamic response of the icecap plate structure. In the practical research for ice-breaking engineering, experimental research about explosive ice-jam flood disaster prevention and reduction was processed, which may provide credible data information for the further theoretical research.