There is limited experimental test data available on the response of concrete columns subjected to contact explosions. Columns are the most vulnerable and critical member in any structure and are at risk of contact explosion attacks using small quantities of explosives. A benchmark study for the response of full-scale reinforced concrete (RC) columns subjected to live contact explosions of varying charge mass is presented in this paper. Quantitative and qualitative assessments of damage profiles and the residual axial load capacity of the columns are presented. The experimental data were used to establish a set of validated numerical LS-Dyna models that were used for parametric studies to establish the influence of various design parameters on the response. The results of the parametric studies showed that the demolition charge mass for an RC column is considerably lower than the breaching charge mass for an RC slab of the same depth and material properties. Concrete strength was found to have a limited influence on the residual axial capacity of blast-damaged columns.

中文翻译：

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RC柱的接触爆炸响应：实验和数值研究

关于遭受接触爆炸的混凝土柱的响应，有限的实验测试数据可用。在任何结构中，立柱都是最易受伤害和最关键的构件，并存在使用少量炸药发生接触爆炸的危险。本文提出了一个标准研究，该研究针对各种装药质量的带电接触爆炸的全尺寸钢筋混凝土（RC）柱的响应。给出了损伤轮廓的定量和定性评估以及柱子的残余轴向承载能力。实验数据用于建立一套经过验证的数值LS-Dyna模型，该模型用于参数研究以建立各种设计参数对响应的影响。参数研究的结果表明，对于相同深度和材料特性的RC板，RC柱的拆除装料质量显着低于破损装料质量。发现混凝土强度对爆炸破坏柱的残余轴向承载力影响有限。