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特高压灵绍线长江大跨越输电线路铁塔具有高、大、重等特点,采用了落地双平臂抱杆对其进行施工。运用有限元方法对工程所用的双平臂抱杆及双平臂抱杆与铁塔的耦合结构进行了力学性能分析,分别得出多种工况下这两种结构的抱杆整体最大位移、最大应力和腰环拉线最大拉力。结果表明:当风向为45°方向时,抱杆处于最不利状态;与单抱杆结构相比,耦合结构中抱杆的最大位移增大,腰环拉线拉力减小。
Ultra-high voltage Ling Shao line Yangtze River across the transmission line tower with high, big, heavy and so on, the use of landing double flat arm pole for their construction. The finite element method is used to analyze the mechanical properties of the coupling structure of the double-flat arm pole and the double-arm arm pole and the tower. The maximum displacement of the pole in the two kinds of structures under different conditions is obtained, Stress and lumbar ring pull the maximum pull. The results show that when the wind direction is 45 °, the pole is in the most unfavorable state. Compared with the single pole structure, the maximum displacement of the pole in the coupling structure increases, and the pull force of the looped wire decreases.