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研究爆炸波作用下不同预应力锚索类型的受力特征对提高锚固洞室抗爆性能有着重要的意义。通过模型试验和数值分析,研究了在集中装药产生的爆炸波作用下两种类型预应力锚索的索端张力变化特征和锚索锚固段轴应变变化波形,探讨了两种锚索类型的预应力变化特征和规律,并得出几点有意义的结论。采用显式动力分析程序得出的计算结果与试验数据的吻合性较好,进一步证实了模型参数和建模的有效性和正确性。
Studying the stress characteristics of different types of prestressed anchor cables under the action of blast waves is of great significance for improving the antiknock performance of anchored cells. Through the model test and the numerical analysis, the variation characteristics of the cable tension at the two types of prestressed cables and the changes of the axial strain of the cables at the anchorage section are studied under the explosive charge generated by the concentrated charge. The effects of two types of cable Prestress variation characteristics and laws, and draw a few meaningful conclusions. The results of the explicit dynamic analysis program are in good agreement with the experimental data, further confirming the validity and correctness of the model parameters and modeling.