高压输电塔-线体系振动台模型非等比例问题研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (6) : 114-118,.

论文

高压输电塔-线体系振动台模型非等比例问题研究

田利1，李宏男1，黄连壮2

作者信息 +

Study on non-proportional problem in shaking table model of power transmission tower-line system

Tian Li1, Li Hong-nan1, Huang Lian-zhuang2

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文章历史 +

摘要

高压输电塔-线体系模型进行振动台试验时，由于模型跨度大以及实验室尺寸等条件限制，输电塔-线体系中塔与线的比例因子很难保持相同，此时需要将导（地）线的比例进行修正。从数值分析的角度出发，以辽宁盖州500kV输电线路的一段输电塔-线体系为例，输电塔的比例保持不变，导（地）线的修正系数分别取为1.0、0.5和0.4的情况下进行纵向和侧向下的一致和多点地震响应时程分析。研究结果表明，导（地）线的比例进行修正后，输电塔-线体系的地震响应与原模型保持一致，因此这种修正模型的振动台试验的精度满足工程要求。

Abstract

Because of the large span of model and the limitation of laboratory size, it is difficult to keep the tower and line in the same scaling factor when shaking table testing of the power transmission tower-line system is carried out, and it is need to modify the scaling factor of line. From the perspective of numerical analysis and based on the 500kV transmission line in Gaizhou city of Liaoning province, the modified scaling factor of line is taken as 1.0, 0.5 and 0.4 with keeping the scaling of the tower unchanged, and the seismic responses of the infinite element models are obtained under uniform and multiple excitations of longitudinal and transverse, respectively. The results show that the seismic responses of the modified model of transmission tower-line system keep the same as the original model’s, and the precision of the shaking table testing of the modified model meets the project requirements.

导出引用

田利;李宏男;黄连壮. 高压输电塔-线体系振动台模型非等比例问题研究[J]. 振动与冲击, 2012, 31(6): 114-118,

Tian Li;Li Hong-nan;Huang Lian-zhuang. Study on non-proportional problem in shaking table model of power transmission tower-line system[J]. Journal of Vibration and Shock, 2012, 31(6): 114-118,