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首页> 外文期刊>Journal of Civil Engineering and Science >Numerical Studies on Blast Loaded Steel-Concrete Composite Panels
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Numerical Studies on Blast Loaded Steel-Concrete Composite Panels

机译：爆炸荷载作用下钢-混凝土复合板的数值研究

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摘要

In this study, response of Steel-Concrete Composite (SCC) panels subjected to air-blast loading is numerically simulated by conducting finite element analysis. A simplified approach to generate the finite element model of the SCC panels is proposed. In the proposed approach, solid, plate and link elements are used to represent the concrete core, steel cover plates and through-through connectors respectively. Interface between the solid and plate elements are idealized with surface-to-surface contact elements, which take care of the transfer of forces between solid and plate elements. Application of the proposed approach for analyzing the SCC components is validated through two examples. Static response of a SCC beam is obtained by using the proposed approach, which is in close agreement with the experimental results. Dynamic response of a SCC panel with through-through connectors subjected to blast pressure due to an explosion of 200 kg TNT at 5 m is obtained by using the proposed simplified approach. Peak response is verified with the results obtained by using an analytical approach. Parametric studies are carried out by varying the charge weight, thickness of the cover plates and diameter of shear connector of the SCC panel. Thickness of the cover plates is found to affect the peak response in a nonlinear manner, while diameter of shear connector is found to have only marginal influence on the peak response.
机译：在这项研究中，通过进行有限元分析，数值模拟了钢-混凝土复合材料（SCC）板在受到鼓风载荷作用下的响应。提出了一种简化的生成SCC面板有限元模型的方法。在提出的方法中，实体，板和链接元素分别用于表示混凝土芯，钢盖板和直通连接器。实体和板状元件之间的界面是理想的，采用面对面接触元件，可以处理实体和板状元件之间的力传递。通过两个示例验证了所提出方法在分析SCC组件中的应用。利用本文提出的方法可以得到SCC梁的静态响应，与实验结果非常吻合。通过使用拟议的简化方法，获得了具有贯通式连接器的SCC面板在5 m处承受200 kg TNT爆炸引起的爆炸压力的动态响应。使用分析方法获得的结果验证峰响应。通过改变装料重量，盖板厚度和SCC面板的剪切连接器直径来进行参数研究。发现盖板的厚度以非线性方式影响峰响应，而发现剪切连接器的直径仅对峰响应有边际影响。

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