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基于高频动态天平测力试验,研究了1000kV双回路特高压输电塔的等效静力风荷载。基于准定常理论和不同高度的脉动风荷载无量纲自功率谱相等的假设,得到了塔身不同高度处的风荷载自谱和互谱。分别计算了输电塔风偏角为0°和90°时的等效背景风荷载、等效共振风荷载和总等效静风荷载,给出了不同高度处的阵风效应因子,可为特高压输电塔的风荷载计算提供依据。
Based on the high frequency dynamic balance test, the equivalent static wind load of 1000kV double circuit UHV transmission tower is studied. Based on the assumption of constant theory and dimensionless self-power spectrum of fluctuating wind loads at different heights, the wind-load self-spectrum and cross-spectrum at different heights are obtained. Equivalent background wind load, equivalent resonance wind load and total equivalent static wind load at transmission tower windward angles of 0 ° and 90 ° are calculated respectively, and gust effect factors at different heights are given, which can be UHV Transmission tower wind load calculation basis.