输电塔-线体系灾变分析与安全评估综述

输电塔-线体系是一种重要的生命线工程，它的安全性与可靠性直接关系到国家经济的命脉，一旦破坏将造成难以估量的损失和不良的社会影响。然而，近些年来极端天气和地质灾害的频繁发生，导致输电塔-线体系的破坏现象越来越严重，也逐渐引起社会的广泛关注。该文不仅重点探讨输电线路已有灾害的发生原因和破坏形式，而且从结构设计、数值分析和试验验证三个方面总结分析现阶段国内外为保证输电塔-线体系的安全运行所采取的方法和手段。通过对问题的归纳与总结，旨在发现设计与分析过程中存在的缺陷和不足，进而提高和补强结构抵抗外部环境荷载灾害性破坏的能力，以及加强设计人员对电网体系安全运行状况重要性和可靠性的意识。

Disaster analysis and safety assessment on transmission tower-line system: an overview

As the carrier of high voltage electric power，transmission tower-line system is an important lifeline project，which safety and reliability may directly affect economic development. Once damaged due to natural disasters，it may result in unpredictable losses and negative social impacts. In recent years，extreme weather and geological disasters occurred frequently，and as a result，transmission tower-line systems were severely damaged，which received widespread social concerns. In this work，the disaster causes and failure modes of transmission lines were particularly discussed，and current measures or approaches for ensuring the safe operation of transmission tower-line system were summarized from three aspects，namely，structural design，numerical analysis and experimental verification. Based on the generalization and summation of these problems，it is aimed that the defects and deficiencies in design of transmission tower-line system can be ruled out，the ability of structures to resist the external environmental disasters can be improved，and the consciousness of designers on importance or reliability of power safe operation can be enhanced.