圆管输电塔风荷载多天平同步测力风洞试验研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (22) : 137-143.

论文

张宏杰1 ，黄阳2，周奇2,3

作者信息 +

Wind tunnel tests for wind loads on a tubular transmission tower via multi-balance synchronous force measurement

ZHANG Hongjie1，HUANG Yang2，ZHOU Qi2,3

Author information +

文章历史 +

摘要

水平风作用下输电塔风荷载的研究已经取得一定成果，但有竖向风联合作用下的输电塔风荷载的研究甚少。本文采用多天平同步测力风洞试验方法，获得了水平风和竖向风联合作用下的输电塔塔身节段的气动力系数。试验研究表明：多天平同步测力方法可以直接且准确地测量输电塔构件的风荷载；与常规试验相比，多天平同步测力方法可以用于同时具有攻角和偏角的风作用下输电塔风荷载的测量，且能准确地模拟输电塔的气流扰流，减少或避免风洞地面或分离平台引起的边界层效应；来流风攻角在±5°范围内时，竖向风对阻力系数的影响较小，可以忽略；来流风攻角较大时，竖向风对输电塔塔身气动力系数的影响较大，不可忽略。

Abstract

Some results have been achieved about the wind load on the transmission tower under horizontal wind, but there is less study on the wind load on the transmission tower under horizontal wind combined with vertical wind. The aerodynamic force coefficients of the transmission tower body model under the combined action of horizontal wind and vertical wind were obtained by using wind tunnel tests measure multi-balance synchronous force measurement method. The experimental results show that the method can directly and accurately measure the wind load on transmission tower components. Compared to conventional tests, the method can be used to measure the wind load on the transmission tower body model with simultaneous tilt and yaw angles, can accurately simulate the airflow around the transmission tower, and also can reduce or even avoid the boundary layer effect caused by the wind tunnel ground or the separation platform; When the tilt angle of incoming wind is within the range of -5° to 5°, the influence of the vertical wind on the drag coefficient is slight and can be ignored. When the tilt angle of incoming wind is larger than 5°, the vertical wind exerts a significant influence on the aerodynamic coefficients of the transmission tower body, which cannot be neglected.

导出引用

张宏杰1,黄阳2，周奇2,3. 圆管输电塔风荷载多天平同步测力风洞试验研究[J]. 振动与冲击, 2019, 38(22): 137-143

ZHANG Hongjie1，HUANG Yang2，ZHOU Qi2,3. Wind tunnel tests for wind loads on a tubular transmission tower via multi-balance synchronous force measurement[J]. Journal of Vibration and Shock, 2019, 38(22): 137-143

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