Abstract In the construction process of electricity facilities, after wire broken or tension failure, the wire will drastically rush through the iron towers and drop onto the shelter structure named cross-frame. In this investigation, A systematical dynamic analysis method is developed to investigate the dynamic interaction between the electricity transmission wire and cross-frame, which is crucial for ensuring the safety of the construction engineering. The Absolute Nodal Coordinate Formulation cable element is used to model the transmission wire. The methodology of describing and solving the sliding joints between the wire and the iron towers is developed. An efficient contact searching procedure is proposed based on the spatial beam-to-beam contact manner. Since the dynamic properties of the wire and cross-frame are quite different, the co-simulation technology is created. An impact example between a free falling wire and the steel rods is performed both numerically and experimentally. Finally, a full-size cross-frame-wire model is tested. The feasibility, accuracy and efficiency of the proposed procedure are demonstrated, which can significantly improve the efficiency of the cross-frame design and ensure the safety of the electricity facility construction.

中文翻译：

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传输线与横架的动态交互

摘要 在电力设施建设过程中，当电线断裂或张力失效后，电线会剧烈冲过铁塔，落到称为横架的棚架结构上。在本次调查中，开发了一种系统的动力分析方法来研究输电线与横梁之间的动力相互作用，这对于确保建筑工程的安全至关重要。绝对节点坐标公式电缆元素用于模拟传输线。开发了描述和解决钢丝与铁塔之间滑动接头的方法。基于空间波束到波束接触方式提出了一种有效的接触搜索程序。由于线材和横架的动态特性大不相同，创建了联合仿真技术。自由落体金属丝和钢棒之间的冲击示例是通过数值和实验进行的。最后，测试了一个全尺寸的交叉框架线模型。论证了所提出程序的可行性、准确性和效率，可显着提高跨框架设计的效率，确保电力设施建设的安全。