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首页> 外文会议>International conference on sustainable development of critical infrastructure 2014 >Tower Destruction Mechanics of Overhead Transmission Lines and Prevention Technologies in Ice Disasters
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Tower Destruction Mechanics of Overhead Transmission Lines and Prevention Technologies in Ice Disasters

机译：冰灾中架空输电线路铁塔的破坏机理及防治技术

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摘要

Some advances on tower destruction mechanics of overhead transmission lines and prevention technologies in ice disasters are introduced. Firstly, based on the numerical and experimental study on the tower-line system with ice-shedding and broken of conductors, dynamic responses of the tower-line system were obtained, and the unbalanced tensions as well as the uplift loads were proposed. Secondly, study on the bearing capacity of K type joints with an included angle less than 30 degree was completed. The first ultra high voltage (UHV) steel tubular cup type tower in the world was designed for transmission lines in heavy icing area, and the prototype test was carried out in the UHV tower test station. Thirdly, the bearing capacity and the destruction modes of transmission towers with galloping conductors were studied. A practical calculation method of the galloping loads was obtained. A constructional measure realized by the bolt strengthen technology were proposed for the transmission towers in the galloping area with high intensity. Lastly, the structural reinforcement technologies of the transmission towers after ice disaster were developed, especially for the enhancement of design standards and reinforcement technology for main members of transmission towers.
机译：介绍了架空输电线路塔架破坏机理和冰灾预防技术的一些进展。首先，基于对具有导线脱落和断线的塔线系统的数值和实验研究，获得了塔线系统的动力响应，并提出了不平衡的张力以及提升载荷。其次，完成了夹角小于30度的K型接头的承载力研究。世界上第一座超高压（UHV）钢管杯型塔架是为重覆冰地区的输电线路设计的，原型测试在UHV塔架测试站进行。第三，研究了带有飞驰导体的输电塔的承载能力和破坏方式。得到了一种实用的奔腾载荷计算方法。针对高强度飞驰地区的输电塔，提出了采用螺栓加固技术实现的施工措施。最后，开发了冰灾后输电塔的结构加固技术，特别是为了提高输电塔主要构件的设计标准和加固技术。

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