以某输电线路实际工程为背景,建立输电塔-线体系有限元模型和台风风场,采用计算流体动力学数值模拟方法,通过Fluent 15.0计算软件计算台风场,并结合ABAQUS有限元软件,采用增量动力分析方法开展台风作用下输电塔-线体系倒塌易损性分析,对比了不同风攻角和风谱对输电塔-线体系易损性的影响。结果表明,90°风攻角为最不利风攻角,即垂直塔线方向上输电塔-线体系的倒塌概率更大,0°,45°,60°和90°这4个风攻角下的临界倒塌风速分别为29.9 m/s
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