中文摘要：

北方某地2014年2月由于冰雪天气发生振子杆弯折,对刚性结构水平对数周期天线振子杆进行了裹冰分析。以裹冰厚度、裹冰时风速为已知条件,在有限元软件Ansys平台上,对弯折振子杆进行了详细的裹冰分析。根据分析结果,知实际裹冰厚度超出了设计裹冰厚度,引起振子杆裹冰荷载和受风面积增大,超出振子杆、振子拉线承载能力,导致振子杆失稳弯折。根据振子杆弯折原因,提出了振子杆的改进设计方案,以满足重覆冰区的裹冰要求。

英文摘要：

Analysis of oscillating rod of rigid structure horizontal log-periodic antenna under wrap ice was performed,due to winter weather oscillating rod is bent,somewhere in the north in February 2014.In the finite element software ANSYS platform,to wrap the ice thickness,wrap ice when wind speed is known conditions,a detailed analysis of wrapped ice of bending oscillating rod was performed.The results show that the actual thickness beyond the design wrapped ice thickness.So cause the wrap ice load and wind load area increases,beyond the oscillating rod and its cable carrying capacity,resulting in instability of the oscillating rod bent.According to the oscillating rod bent reason,in order to meet the requirements of heavy ice wrapped,the improved design of the oscillating rod was proposed.