高压输电塔-线体系抗灾研究的现状与发展趋势

以输电塔-线体系的环境荷载特性和结构动力响应特性为出发点,分析目前高压输电塔-线体系的发展现状及人们对环境荷载缺乏认识而经常造成灾害事故的原因,论述了输电塔-线体系在现有设计水准下抵抗地震和环境荷载作用的能力和现阶段输电塔-线体系设计的可靠性。全面系统地总结了高压输电塔-线体系抗震抗风研究的动力分析建模方法、模型种类与适用性,以及试验研究所采用的方法、达到的水平和解决的问题,抗震抗风研究的理论成果和发展动向,结构振动控制理论体系和控制手段,结构设计理论的发展趋势等。指出了现阶段输电塔动力响应研究与设计中存在的缺陷和不足,从环境荷载建模、结构动力响应分析方法、试验测试手段和结构控制理论与措施等方面提出了当前迫切需要进行研究的内容与方向。根本目的旨在提高输电塔-线体系结构设计理论和设计水准,增强抵抗地震和环境荷载灾害性破坏的能力。

State-of-the-art review on studies of disater resistance of high-voltage transmission tower-line systems

With regard to the characteristics of environmental loads and structural dynamic responses,the design standard and reliability of power transmission line systems under earthquake and environmental loads are assessed.The state-of-the-art of high-voltage power transmission line systems and relevant disasters caused by environmental loads is analyzed.Mechanical modeling methods,types and utilities of dynamic analysis,test measurements,available standards and results of experimental investigations,advances and improving directions of anti-seismic and windproof theoretical analysis,structural control theories and developments of corresponding measurements,and structure design theories are systematically summarized.The shortcomings in power transmission line system design and corresponding research needs are pointed out.The research content and direction are provided for systems with respect to environmental load modeling,structural response analytical method,experimental and test measurement,structural vibration control theory and structural design concept.