摘要
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。
It is significant to study the stress characteristics of different types of prestressed anchor cables under explosive waves for improving the anti-explosive performance of anchorage Chamber. The model tests and numerical simulation are adopted to study the variation of stress characteristics at the end of anchor cables and the axial strain of anchorage segments under explosive waves induced by the centralized charge. The variation laws of two types of anchor cables are introduced, and some valuable conclusions are drawn. The results computed by the explicit dynamic analysis software are similar to the experimental data, and the effectiveness and correctness of parameter selection and model establishment are proved.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2009年第7期1099-1104,共6页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金项目(50874085)
关键词
爆炸波
预应力锚索
受力特征
模型试验
数值模拟
explosive wave
prestressed anchor cable
stress characteristic
model test
numerical simulation
