考虑导线影响的输电塔侧向简化抗震计算方法

根据作者提出的侧向振动时高压输电塔体系的简化抗震计算模型，导出了振动方程，编制了高压输电塔体系抗震计算考虑导线影响的计算程序。经大量的输电塔体系地层反应分析，得出了导线的影响随跨度的增加而增大的结论。分析结果表明，按现行《电力设施抗震设施规范》设计的大跨越输电塔体系在强震作用下是偏于不安全的。最后，给出了输电塔体系侧向振动时考虑导线影响的界限，提出了输电塔—导线体系侧向振动的简化抗震计算方法。

Simplified Aseicmic Calculation Method Considering Effects of Lines on Transmission Tower

In this paper, the generalized equation of motion for the coupled system of transmission tower and the conductors in out-of-plane vibration and its computational method are given according to the simplified model developed. A computer program written by authors is used to calculate the seismic responses of the system under the action of earthquake. The results show that the effects of the lines on the high voltage transmission tower increase with the span between two towers. Furthermore, the limit of the span of transmission lines is proposed based on the calculation and analysis of the seismic responses of transmission towers. Finally, the simplified method of aseicmic calculation for the engineering design is presented for the coupled system of transmission tower-conductors in out-of-plane vibration.